mirror of
https://github.com/gwm17/implot.git
synced 2024-11-26 12:18:52 -05:00
48501a3c10
* Add GPU-accelerated heatmaps * Add BustPlotCache() and other small changes * Fixupside-down heatmaps * Prevent new/delete on each call to PlotHeatmap() on certain cases * Add common interface for backends & move context to ImPlotContext * Fix integer heatmaps not working properly * Misc changes - Rename implot_gpu.h -> implot_backend.h - Rename IMPLOT_ENABLE_OPENGL3_ACCELERATION -> IMPLOT_BACKEND_ENABLE_OPENGL3 - Use gp.CurrentItem->ID over gp.CurrentPlot->ID - Add flags for different features supported by backends * Cleanup & maintenance - Removed unnecessary attributes from shader - Renamed functions & structs - Reduced memory footprint of OpenGL backend context * Standandardize backends for future implementations * Added logarithmic X & Y axes * Fix vertically-flipped 2D histograms * Fix incorrect colormap colors
1248 lines
52 KiB
C++
1248 lines
52 KiB
C++
// MIT License
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// Copyright (c) 2021 Evan Pezent
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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// ImPlot v0.10 WIP
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// You may use this file to debug, understand or extend ImPlot features but we
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// don't provide any guarantee of forward compatibility!
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//-----------------------------------------------------------------------------
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// [SECTION] Header Mess
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//-----------------------------------------------------------------------------
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#pragma once
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#ifndef IMGUI_DEFINE_MATH_OPERATORS
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#define IMGUI_DEFINE_MATH_OPERATORS
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#endif
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#include <time.h>
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#include "imgui_internal.h"
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#include "backends/implot_backend.h"
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#ifndef IMPLOT_VERSION
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#error Must include implot.h before implot_internal.h
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#endif
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//-----------------------------------------------------------------------------
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// [SECTION] Constants
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//-----------------------------------------------------------------------------
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// Constants can be changed unless stated otherwise. We may move some of these
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// to ImPlotStyleVar_ over time.
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// The maximum number of supported y-axes (DO NOT CHANGE THIS)
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#define IMPLOT_Y_AXES 3
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// Zoom rate for scroll (e.g. 0.1f = 10% plot range every scroll click)
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#define IMPLOT_ZOOM_RATE 0.1f
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// Mimimum allowable timestamp value 01/01/1970 @ 12:00am (UTC) (DO NOT DECREASE THIS)
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#define IMPLOT_MIN_TIME 0
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// Maximum allowable timestamp value 01/01/3000 @ 12:00am (UTC) (DO NOT INCREASE THIS)
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#define IMPLOT_MAX_TIME 32503680000
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// Default label format for axis labels
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#define IMPLOT_LABEL_FMT "%g"
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// Plot values less than or equal to 0 will be replaced with this on log scale axes
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#define IMPLOT_LOG_ZERO DBL_MIN
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//-----------------------------------------------------------------------------
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// [SECTION] Macros
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//-----------------------------------------------------------------------------
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// Split ImU32 color into RGB components [0 255]
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#define IM_COL32_SPLIT_RGB(col,r,g,b) \
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ImU32 r = ((col >> IM_COL32_R_SHIFT) & 0xFF); \
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ImU32 g = ((col >> IM_COL32_G_SHIFT) & 0xFF); \
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ImU32 b = ((col >> IM_COL32_B_SHIFT) & 0xFF);
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//-----------------------------------------------------------------------------
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// [SECTION] Forward Declarations
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//-----------------------------------------------------------------------------
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struct ImPlotTick;
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struct ImPlotAxis;
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struct ImPlotAxisColor;
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struct ImPlotItem;
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struct ImPlotLegendData;
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struct ImPlotPlot;
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struct ImPlotNextPlotData;
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//-----------------------------------------------------------------------------
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// [SECTION] Context Pointer
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//-----------------------------------------------------------------------------
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extern IMPLOT_API ImPlotContext* GImPlot; // Current implicit context pointer
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//-----------------------------------------------------------------------------
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// [SECTION] Generic Helpers
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//-----------------------------------------------------------------------------
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// Computes the common (base-10) logarithm
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static inline float ImLog10(float x) { return log10f(x); }
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static inline double ImLog10(double x) { return log10(x); }
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// Returns true if a flag is set
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template <typename TSet, typename TFlag>
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static inline bool ImHasFlag(TSet set, TFlag flag) { return (set & flag) == flag; }
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// Flips a flag in a flagset
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template <typename TSet, typename TFlag>
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static inline void ImFlipFlag(TSet& set, TFlag flag) { ImHasFlag(set, flag) ? set &= ~flag : set |= flag; }
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// Linearly remaps x from [x0 x1] to [y0 y1].
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template <typename T>
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static inline T ImRemap(T x, T x0, T x1, T y0, T y1) { return y0 + (x - x0) * (y1 - y0) / (x1 - x0); }
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// Linear rempas x from [x0 x1] to [0 1]
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template <typename T>
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static inline T ImRemap01(T x, T x0, T x1) { return (x - x0) / (x1 - x0); }
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// Returns always positive modulo (assumes r != 0)
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static inline int ImPosMod(int l, int r) { return (l % r + r) % r; }
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// Returns true if val is NAN or INFINITY
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static inline bool ImNanOrInf(double val) { return val == HUGE_VAL || val == -HUGE_VAL || isnan(val); }
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// Turns NANs to 0s
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static inline double ImConstrainNan(double val) { return isnan(val) ? 0 : val; }
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// Turns infinity to floating point maximums
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static inline double ImConstrainInf(double val) { return val == HUGE_VAL ? DBL_MAX : val == -HUGE_VAL ? - DBL_MAX : val; }
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// Turns numbers less than or equal to 0 to 0.001 (sort of arbitrary, is there a better way?)
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static inline double ImConstrainLog(double val) { return val <= 0 ? 0.001f : val; }
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// Turns numbers less than 0 to zero
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static inline double ImConstrainTime(double val) { return val < IMPLOT_MIN_TIME ? IMPLOT_MIN_TIME : (val > IMPLOT_MAX_TIME ? IMPLOT_MAX_TIME : val); }
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// True if two numbers are approximately equal using units in the last place.
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static inline bool ImAlmostEqual(double v1, double v2, int ulp = 2) { return ImAbs(v1-v2) < DBL_EPSILON * ImAbs(v1+v2) * ulp || ImAbs(v1-v2) < DBL_MIN; }
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// Finds min value in an unsorted array
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template <typename T>
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static inline T ImMinArray(const T* values, int count) { T m = values[0]; for (int i = 1; i < count; ++i) { if (values[i] < m) { m = values[i]; } } return m; }
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// Finds the max value in an unsorted array
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template <typename T>
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static inline T ImMaxArray(const T* values, int count) { T m = values[0]; for (int i = 1; i < count; ++i) { if (values[i] > m) { m = values[i]; } } return m; }
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// Finds the min and max value in an unsorted array
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template <typename T>
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static inline void ImMinMaxArray(const T* values, int count, T* min_out, T* max_out) {
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T Min = values[0]; T Max = values[0];
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for (int i = 1; i < count; ++i) {
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if (values[i] < Min) { Min = values[i]; }
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if (values[i] > Max) { Max = values[i]; }
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}
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*min_out = Min; *max_out = Max;
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}
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// Finds the mean of an array
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template <typename T>
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static inline double ImMean(const T* values, int count) {
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double den = 1.0 / count;
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double mu = 0;
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for (int i = 0; i < count; ++i)
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mu += values[i] * den;
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return mu;
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}
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// Finds the sample standard deviation of an array
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template <typename T>
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static inline double ImStdDev(const T* values, int count) {
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double den = 1.0 / (count - 1.0);
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double mu = ImMean(values, count);
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double x = 0;
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for (int i = 0; i < count; ++i)
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x += (values[i] - mu) * (values[i] - mu) * den;
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return sqrt(x);
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}
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// Mix color a and b by factor s in [0 256]
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static inline ImU32 ImMixU32(ImU32 a, ImU32 b, ImU32 s) {
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#ifdef IMPLOT_MIX64
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const ImU32 af = 256-s;
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const ImU32 bf = s;
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const ImU64 al = (a & 0x00ff00ff) | (((ImU64)(a & 0xff00ff00)) << 24);
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const ImU64 bl = (b & 0x00ff00ff) | (((ImU64)(b & 0xff00ff00)) << 24);
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const ImU64 mix = (al * af + bl * bf);
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return ((mix >> 32) & 0xff00ff00) | ((mix & 0xff00ff00) >> 8);
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#else
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const ImU32 af = 256-s;
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const ImU32 bf = s;
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const ImU32 al = (a & 0x00ff00ff);
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const ImU32 ah = (a & 0xff00ff00) >> 8;
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const ImU32 bl = (b & 0x00ff00ff);
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const ImU32 bh = (b & 0xff00ff00) >> 8;
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const ImU32 ml = (al * af + bl * bf);
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const ImU32 mh = (ah * af + bh * bf);
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return (mh & 0xff00ff00) | ((ml & 0xff00ff00) >> 8);
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#endif
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}
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// Lerp across an array of 32-bit collors given t in [0.0 1.0]
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static inline ImU32 ImLerpU32(const ImU32* colors, int size, float t) {
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int i1 = (int)((size - 1 ) * t);
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int i2 = i1 + 1;
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if (i2 == size || size == 1)
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return colors[i1];
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float den = 1.0f / (size - 1);
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float t1 = i1 * den;
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float t2 = i2 * den;
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float tr = ImRemap01(t, t1, t2);
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return ImMixU32(colors[i1], colors[i2], (ImU32)(tr*256));
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}
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// Set alpha channel of 32-bit color from float in range [0.0 1.0]
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static inline ImU32 ImAlphaU32(ImU32 col, float alpha) {
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return col & ~((ImU32)((1.0f-alpha)*255)<<IM_COL32_A_SHIFT);
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}
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// Character buffer writer helper (FIXME: Can't we replace this with ImGuiTextBuffer?)
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struct ImBufferWriter
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{
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char* Buffer;
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int Size;
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int Pos;
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ImBufferWriter(char* buffer, int size) {
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Buffer = buffer;
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Size = size;
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Pos = 0;
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}
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void Write(const char* fmt, ...) {
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va_list args;
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va_start(args, fmt);
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WriteV(fmt, args);
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va_end(args);
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}
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void WriteV(const char* fmt, va_list args) {
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const int written = ::vsnprintf(&Buffer[Pos], Size - Pos - 1, fmt, args);
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if (written > 0)
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Pos += ImMin(written, Size-Pos-1);
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}
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};
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// Fixed size point array
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template <int N>
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struct ImPlotPointArray {
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inline ImPlotPoint& operator[](int i) { return Data[i]; }
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inline const ImPlotPoint& operator[](int i) const { return Data[i]; }
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inline int Size() { return N; }
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ImPlotPoint Data[N];
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};
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//-----------------------------------------------------------------------------
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// [SECTION] ImPlot Enums
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//-----------------------------------------------------------------------------
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typedef int ImPlotScale; // -> enum ImPlotScale_
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typedef int ImPlotTimeUnit; // -> enum ImPlotTimeUnit_
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typedef int ImPlotDateFmt; // -> enum ImPlotDateFmt_
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typedef int ImPlotTimeFmt; // -> enum ImPlotTimeFmt_
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// XY axes scaling combinations
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enum ImPlotScale_ {
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ImPlotScale_LinLin, // linear x, linear y
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ImPlotScale_LogLin, // log x, linear y
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ImPlotScale_LinLog, // linear x, log y
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ImPlotScale_LogLog // log x, log y
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};
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enum ImPlotTimeUnit_ {
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ImPlotTimeUnit_Us, // microsecond
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ImPlotTimeUnit_Ms, // millisecond
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ImPlotTimeUnit_S, // second
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ImPlotTimeUnit_Min, // minute
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ImPlotTimeUnit_Hr, // hour
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ImPlotTimeUnit_Day, // day
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ImPlotTimeUnit_Mo, // month
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ImPlotTimeUnit_Yr, // year
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ImPlotTimeUnit_COUNT
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};
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enum ImPlotDateFmt_ { // default [ ISO 8601 ]
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ImPlotDateFmt_None = 0,
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ImPlotDateFmt_DayMo, // 10/3 [ --10-03 ]
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ImPlotDateFmt_DayMoYr, // 10/3/91 [ 1991-10-03 ]
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ImPlotDateFmt_MoYr, // Oct 1991 [ 1991-10 ]
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ImPlotDateFmt_Mo, // Oct [ --10 ]
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ImPlotDateFmt_Yr // 1991 [ 1991 ]
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};
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enum ImPlotTimeFmt_ { // default [ 24 Hour Clock ]
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ImPlotTimeFmt_None = 0,
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ImPlotTimeFmt_Us, // .428 552 [ .428 552 ]
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ImPlotTimeFmt_SUs, // :29.428 552 [ :29.428 552 ]
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ImPlotTimeFmt_SMs, // :29.428 [ :29.428 ]
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ImPlotTimeFmt_S, // :29 [ :29 ]
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ImPlotTimeFmt_HrMinSMs, // 7:21:29.428pm [ 19:21:29.428 ]
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ImPlotTimeFmt_HrMinS, // 7:21:29pm [ 19:21:29 ]
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ImPlotTimeFmt_HrMin, // 7:21pm [ 19:21 ]
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ImPlotTimeFmt_Hr // 7pm [ 19:00 ]
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};
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// Input mapping structure, default values listed in the comments.
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struct ImPlotInputMap {
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ImGuiMouseButton PanButton; // LMB enables panning when held
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ImGuiKeyModFlags PanMod; // none optional modifier that must be held for panning
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ImGuiMouseButton FitButton; // LMB fits visible data when double clicked
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ImGuiMouseButton ContextMenuButton; // RMB opens plot context menu (if enabled) when clicked
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ImGuiMouseButton BoxSelectButton; // RMB begins box selection when pressed and confirms selection when released
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ImGuiKeyModFlags BoxSelectMod; // none optional modifier that must be held for box selection
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ImGuiMouseButton BoxSelectCancelButton; // LMB cancels active box selection when pressed
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ImGuiMouseButton QueryButton; // MMB begins query selection when pressed and end query selection when released
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ImGuiKeyModFlags QueryMod; // none optional modifier that must be held for query selection
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ImGuiKeyModFlags QueryToggleMod; // Ctrl when held, active box selections turn into queries
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ImGuiKeyModFlags HorizontalMod; // Alt expands active box selection/query horizontally to plot edge when held
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ImGuiKeyModFlags VerticalMod; // Shift expands active box selection/query vertically to plot edge when held
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IMPLOT_API ImPlotInputMap();
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};
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//-----------------------------------------------------------------------------
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// [SECTION] ImPlot Structs
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//-----------------------------------------------------------------------------
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// Combined date/time format spec
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struct ImPlotDateTimeFmt {
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ImPlotDateTimeFmt(ImPlotDateFmt date_fmt, ImPlotTimeFmt time_fmt, bool use_24_hr_clk = false, bool use_iso_8601 = false) {
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Date = date_fmt;
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Time = time_fmt;
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UseISO8601 = use_iso_8601;
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Use24HourClock = use_24_hr_clk;
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}
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ImPlotDateFmt Date;
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ImPlotTimeFmt Time;
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bool UseISO8601;
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bool Use24HourClock;
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};
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// Two part timestamp struct.
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struct ImPlotTime {
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time_t S; // second part
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int Us; // microsecond part
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ImPlotTime() { S = 0; Us = 0; }
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ImPlotTime(time_t s, int us = 0) { S = s + us / 1000000; Us = us % 1000000; }
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void RollOver() { S = S + Us / 1000000; Us = Us % 1000000; }
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double ToDouble() const { return (double)S + (double)Us / 1000000.0; }
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static ImPlotTime FromDouble(double t) { return ImPlotTime((time_t)t, (int)(t * 1000000 - floor(t) * 1000000)); }
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};
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static inline ImPlotTime operator+(const ImPlotTime& lhs, const ImPlotTime& rhs)
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{ return ImPlotTime(lhs.S + rhs.S, lhs.Us + rhs.Us); }
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static inline ImPlotTime operator-(const ImPlotTime& lhs, const ImPlotTime& rhs)
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{ return ImPlotTime(lhs.S - rhs.S, lhs.Us - rhs.Us); }
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static inline bool operator==(const ImPlotTime& lhs, const ImPlotTime& rhs)
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{ return lhs.S == rhs.S && lhs.Us == rhs.Us; }
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static inline bool operator<(const ImPlotTime& lhs, const ImPlotTime& rhs)
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{ return lhs.S == rhs.S ? lhs.Us < rhs.Us : lhs.S < rhs.S; }
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static inline bool operator>(const ImPlotTime& lhs, const ImPlotTime& rhs)
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{ return rhs < lhs; }
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static inline bool operator<=(const ImPlotTime& lhs, const ImPlotTime& rhs)
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{ return lhs < rhs || lhs == rhs; }
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static inline bool operator>=(const ImPlotTime& lhs, const ImPlotTime& rhs)
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{ return lhs > rhs || lhs == rhs; }
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// Colormap data storage
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struct ImPlotColormapData {
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ImVector<ImU32> Keys;
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ImVector<int> KeyCounts;
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ImVector<int> KeyOffsets;
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ImVector<ImU32> Tables;
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ImVector<int> TableSizes;
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ImVector<int> TableOffsets;
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ImGuiTextBuffer Text;
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ImVector<int> TextOffsets;
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ImVector<bool> Quals;
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ImGuiStorage Map;
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int Count;
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ImPlotColormapData() { Count = 0; }
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int Append(const char* name, const ImU32* keys, int count, bool qual) {
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if (GetIndex(name) != -1)
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return -1;
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KeyOffsets.push_back(Keys.size());
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KeyCounts.push_back(count);
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Keys.reserve(Keys.size()+count);
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for (int i = 0; i < count; ++i)
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Keys.push_back(keys[i]);
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TextOffsets.push_back(Text.size());
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Text.append(name, name + strlen(name) + 1);
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Quals.push_back(qual);
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ImGuiID id = ImHashStr(name);
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int idx = Count++;
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Map.SetInt(id,idx);
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_AppendTable(idx);
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ImPlot::Backend::AddColormap(keys, count, qual);
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return idx;
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}
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void _AppendTable(ImPlotColormap cmap) {
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int key_count = GetKeyCount(cmap);
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const ImU32* keys = GetKeys(cmap);
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int off = Tables.size();
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TableOffsets.push_back(off);
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if (IsQual(cmap)) {
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Tables.reserve(key_count);
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for (int i = 0; i < key_count; ++i)
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Tables.push_back(keys[i]);
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TableSizes.push_back(key_count);
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}
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else {
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int max_size = 255 * (key_count-1) + 1;
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Tables.reserve(off + max_size);
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// ImU32 last = keys[0];
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// Tables.push_back(last);
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// int n = 1;
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for (int i = 0; i < key_count-1; ++i) {
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for (int s = 0; s < 255; ++s) {
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ImU32 a = keys[i];
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ImU32 b = keys[i+1];
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ImU32 c = ImMixU32(a,b,s);
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// if (c != last) {
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Tables.push_back(c);
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// last = c;
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// n++;
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// }
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}
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}
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ImU32 c = keys[key_count-1];
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// if (c != last) {
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Tables.push_back(c);
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// n++;
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// }
|
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// TableSizes.push_back(n);
|
|
TableSizes.push_back(max_size);
|
|
}
|
|
}
|
|
|
|
void RebuildTables() {
|
|
Tables.resize(0);
|
|
TableSizes.resize(0);
|
|
TableOffsets.resize(0);
|
|
for (int i = 0; i < Count; ++i)
|
|
_AppendTable(i);
|
|
}
|
|
|
|
inline bool IsQual(ImPlotColormap cmap) const { return Quals[cmap]; }
|
|
inline const char* GetName(ImPlotColormap cmap) const { return cmap < Count ? Text.Buf.Data + TextOffsets[cmap] : NULL; }
|
|
inline ImPlotColormap GetIndex(const char* name) const { ImGuiID key = ImHashStr(name); return Map.GetInt(key,-1); }
|
|
|
|
inline const ImU32* GetKeys(ImPlotColormap cmap) const { return &Keys[KeyOffsets[cmap]]; }
|
|
inline int GetKeyCount(ImPlotColormap cmap) const { return KeyCounts[cmap]; }
|
|
inline ImU32 GetKeyColor(ImPlotColormap cmap, int idx) const { return Keys[KeyOffsets[cmap]+idx]; }
|
|
inline void SetKeyColor(ImPlotColormap cmap, int idx, ImU32 value) { Keys[KeyOffsets[cmap]+idx] = value; RebuildTables(); }
|
|
|
|
inline const ImU32* GetTable(ImPlotColormap cmap) const { return &Tables[TableOffsets[cmap]]; }
|
|
inline int GetTableSize(ImPlotColormap cmap) const { return TableSizes[cmap]; }
|
|
inline ImU32 GetTableColor(ImPlotColormap cmap, int idx) const { return Tables[TableOffsets[cmap]+idx]; }
|
|
|
|
inline ImU32 LerpTable(ImPlotColormap cmap, float t) const {
|
|
int off = TableOffsets[cmap];
|
|
int siz = TableSizes[cmap];
|
|
int idx = Quals[cmap] ? ImClamp((int)(siz*t),0,siz-1) : (int)((siz - 1) * t + 0.5f);
|
|
return Tables[off + idx];
|
|
}
|
|
|
|
};
|
|
|
|
// ImPlotPoint with positive/negative error values
|
|
struct ImPlotPointError {
|
|
double X, Y, Neg, Pos;
|
|
ImPlotPointError(double x, double y, double neg, double pos) {
|
|
X = x; Y = y; Neg = neg; Pos = pos;
|
|
}
|
|
};
|
|
|
|
// Interior plot label/annotation
|
|
struct ImPlotAnnotation {
|
|
ImVec2 Pos;
|
|
ImVec2 Offset;
|
|
ImU32 ColorBg;
|
|
ImU32 ColorFg;
|
|
int TextOffset;
|
|
bool Clamp;
|
|
};
|
|
|
|
// Collection of plot labels
|
|
struct ImPlotAnnotationCollection {
|
|
|
|
ImVector<ImPlotAnnotation> Annotations;
|
|
ImGuiTextBuffer TextBuffer;
|
|
int Size;
|
|
|
|
ImPlotAnnotationCollection() { Reset(); }
|
|
|
|
void AppendV(const ImVec2& pos, const ImVec2& off, ImU32 bg, ImU32 fg, bool clamp, const char* fmt, va_list args) IM_FMTLIST(7) {
|
|
ImPlotAnnotation an;
|
|
an.Pos = pos; an.Offset = off;
|
|
an.ColorBg = bg; an.ColorFg = fg;
|
|
an.TextOffset = TextBuffer.size();
|
|
an.Clamp = clamp;
|
|
Annotations.push_back(an);
|
|
TextBuffer.appendfv(fmt, args);
|
|
const char nul[] = "";
|
|
TextBuffer.append(nul,nul+1);
|
|
Size++;
|
|
}
|
|
|
|
void Append(const ImVec2& pos, const ImVec2& off, ImU32 bg, ImU32 fg, bool clamp, const char* fmt, ...) IM_FMTARGS(7) {
|
|
va_list args;
|
|
va_start(args, fmt);
|
|
AppendV(pos, off, bg, fg, clamp, fmt, args);
|
|
va_end(args);
|
|
}
|
|
|
|
const char* GetText(int idx) {
|
|
return TextBuffer.Buf.Data + Annotations[idx].TextOffset;
|
|
}
|
|
|
|
void Reset() {
|
|
Annotations.shrink(0);
|
|
TextBuffer.Buf.shrink(0);
|
|
Size = 0;
|
|
}
|
|
};
|
|
|
|
// Tick mark info
|
|
struct ImPlotTick
|
|
{
|
|
double PlotPos;
|
|
float PixelPos;
|
|
ImVec2 LabelSize;
|
|
int TextOffset;
|
|
bool Major;
|
|
bool ShowLabel;
|
|
int Level;
|
|
|
|
ImPlotTick(double value, bool major, bool show_label) {
|
|
PlotPos = value;
|
|
Major = major;
|
|
ShowLabel = show_label;
|
|
TextOffset = -1;
|
|
Level = 0;
|
|
}
|
|
};
|
|
|
|
// Collection of ticks
|
|
struct ImPlotTickCollection {
|
|
ImVector<ImPlotTick> Ticks;
|
|
ImGuiTextBuffer TextBuffer;
|
|
float TotalWidthMax;
|
|
float TotalWidth;
|
|
float TotalHeight;
|
|
float MaxWidth;
|
|
float MaxHeight;
|
|
int Size;
|
|
|
|
ImPlotTickCollection() { Reset(); }
|
|
|
|
const ImPlotTick& Append(const ImPlotTick& tick) {
|
|
if (tick.ShowLabel) {
|
|
TotalWidth += tick.ShowLabel ? tick.LabelSize.x : 0;
|
|
TotalHeight += tick.ShowLabel ? tick.LabelSize.y : 0;
|
|
MaxWidth = tick.LabelSize.x > MaxWidth ? tick.LabelSize.x : MaxWidth;
|
|
MaxHeight = tick.LabelSize.y > MaxHeight ? tick.LabelSize.y : MaxHeight;
|
|
}
|
|
Ticks.push_back(tick);
|
|
Size++;
|
|
return Ticks.back();
|
|
}
|
|
|
|
const ImPlotTick& Append(double value, bool major, bool show_label, const char* fmt) {
|
|
ImPlotTick tick(value, major, show_label);
|
|
if (show_label && fmt != NULL) {
|
|
char temp[32];
|
|
tick.TextOffset = TextBuffer.size();
|
|
snprintf(temp, 32, fmt, tick.PlotPos);
|
|
TextBuffer.append(temp, temp + strlen(temp) + 1);
|
|
tick.LabelSize = ImGui::CalcTextSize(TextBuffer.Buf.Data + tick.TextOffset);
|
|
}
|
|
return Append(tick);
|
|
}
|
|
|
|
const char* GetText(int idx) const {
|
|
return TextBuffer.Buf.Data + Ticks[idx].TextOffset;
|
|
}
|
|
|
|
void Reset() {
|
|
Ticks.shrink(0);
|
|
TextBuffer.Buf.shrink(0);
|
|
TotalWidth = TotalHeight = MaxWidth = MaxHeight = 0;
|
|
Size = 0;
|
|
}
|
|
};
|
|
|
|
// Axis state information that must persist after EndPlot
|
|
struct ImPlotAxis
|
|
{
|
|
ImPlotAxisFlags Flags;
|
|
ImPlotAxisFlags PreviousFlags;
|
|
ImPlotRange Range;
|
|
float Pixels;
|
|
ImPlotOrientation Orientation;
|
|
bool Dragging;
|
|
bool ExtHovered;
|
|
bool AllHovered;
|
|
bool Present;
|
|
bool HasRange;
|
|
double* LinkedMin;
|
|
double* LinkedMax;
|
|
ImPlotTime PickerTimeMin, PickerTimeMax;
|
|
int PickerLevel;
|
|
ImU32 ColorMaj, ColorMin, ColorTxt;
|
|
ImGuiCond RangeCond;
|
|
ImRect HoverRect;
|
|
|
|
ImPlotAxis() {
|
|
Flags = PreviousFlags = ImPlotAxisFlags_None;
|
|
Range.Min = 0;
|
|
Range.Max = 1;
|
|
Dragging = false;
|
|
ExtHovered = false;
|
|
AllHovered = false;
|
|
LinkedMin = LinkedMax = NULL;
|
|
PickerLevel = 0;
|
|
ColorMaj = ColorMin = ColorTxt = 0;
|
|
}
|
|
|
|
bool SetMin(double _min, bool force=false) {
|
|
if (!force && IsLockedMin())
|
|
return false;
|
|
_min = ImConstrainNan(ImConstrainInf(_min));
|
|
if (ImHasFlag(Flags, ImPlotAxisFlags_LogScale))
|
|
_min = ImConstrainLog(_min);
|
|
if (ImHasFlag(Flags, ImPlotAxisFlags_Time))
|
|
_min = ImConstrainTime(_min);
|
|
if (_min >= Range.Max)
|
|
return false;
|
|
Range.Min = _min;
|
|
PickerTimeMin = ImPlotTime::FromDouble(Range.Min);
|
|
return true;
|
|
};
|
|
|
|
bool SetMax(double _max, bool force=false) {
|
|
if (!force && IsLockedMax())
|
|
return false;
|
|
_max = ImConstrainNan(ImConstrainInf(_max));
|
|
if (ImHasFlag(Flags, ImPlotAxisFlags_LogScale))
|
|
_max = ImConstrainLog(_max);
|
|
if (ImHasFlag(Flags, ImPlotAxisFlags_Time))
|
|
_max = ImConstrainTime(_max);
|
|
if (_max <= Range.Min)
|
|
return false;
|
|
Range.Max = _max;
|
|
PickerTimeMax = ImPlotTime::FromDouble(Range.Max);
|
|
return true;
|
|
};
|
|
|
|
void SetRange(double _min, double _max) {
|
|
Range.Min = _min;
|
|
Range.Max = _max;
|
|
Constrain();
|
|
PickerTimeMin = ImPlotTime::FromDouble(Range.Min);
|
|
PickerTimeMax = ImPlotTime::FromDouble(Range.Max);
|
|
}
|
|
|
|
void SetRange(const ImPlotRange& range) {
|
|
SetRange(range.Min, range.Max);
|
|
}
|
|
|
|
void SetAspect(double unit_per_pix) {
|
|
double new_size = unit_per_pix * Pixels;
|
|
double delta = (new_size - Range.Size()) * 0.5f;
|
|
if (IsLocked())
|
|
return;
|
|
else if (IsLockedMin() && !IsLockedMax())
|
|
SetRange(Range.Min, Range.Max + 2*delta);
|
|
else if (!IsLockedMin() && IsLockedMax())
|
|
SetRange(Range.Min - 2*delta, Range.Max);
|
|
else
|
|
SetRange(Range.Min - delta, Range.Max + delta);
|
|
}
|
|
|
|
double GetAspect() const { return Range.Size() / Pixels; }
|
|
|
|
void Constrain() {
|
|
Range.Min = ImConstrainNan(ImConstrainInf(Range.Min));
|
|
Range.Max = ImConstrainNan(ImConstrainInf(Range.Max));
|
|
if (IsLog()) {
|
|
Range.Min = ImConstrainLog(Range.Min);
|
|
Range.Max = ImConstrainLog(Range.Max);
|
|
}
|
|
if (IsTime()) {
|
|
Range.Min = ImConstrainTime(Range.Min);
|
|
Range.Max = ImConstrainTime(Range.Max);
|
|
}
|
|
if (Range.Max <= Range.Min)
|
|
Range.Max = Range.Min + DBL_EPSILON;
|
|
}
|
|
|
|
inline bool IsLabeled() const { return !ImHasFlag(Flags, ImPlotAxisFlags_NoTickLabels); }
|
|
inline bool IsInverted() const { return ImHasFlag(Flags, ImPlotAxisFlags_Invert); }
|
|
|
|
inline bool IsAutoFitting() const { return ImHasFlag(Flags, ImPlotAxisFlags_AutoFit); }
|
|
inline bool IsRangeLocked() const { return HasRange && RangeCond == ImGuiCond_Always; }
|
|
|
|
inline bool IsLockedMin() const { return !Present || IsRangeLocked() || ImHasFlag(Flags, ImPlotAxisFlags_LockMin); }
|
|
inline bool IsLockedMax() const { return !Present || IsRangeLocked() || ImHasFlag(Flags, ImPlotAxisFlags_LockMax); }
|
|
inline bool IsLocked() const { return IsLockedMin() && IsLockedMax(); }
|
|
|
|
inline bool IsInputLockedMin() const { return IsLockedMin() || IsAutoFitting(); }
|
|
inline bool IsInputLockedMax() const { return IsLockedMax() || IsAutoFitting(); }
|
|
inline bool IsInputLocked() const { return IsLocked() || IsAutoFitting(); }
|
|
|
|
inline bool IsTime() const { return ImHasFlag(Flags, ImPlotAxisFlags_Time); }
|
|
inline bool IsLog() const { return ImHasFlag(Flags, ImPlotAxisFlags_LogScale); }
|
|
};
|
|
|
|
// State information for Plot items
|
|
struct ImPlotItem
|
|
{
|
|
ImGuiID ID;
|
|
ImU32 Color;
|
|
int NameOffset;
|
|
bool Show;
|
|
bool LegendHovered;
|
|
bool SeenThisFrame;
|
|
|
|
ImPlotItem() {
|
|
ID = 0;
|
|
NameOffset = -1;
|
|
Show = true;
|
|
SeenThisFrame = false;
|
|
LegendHovered = false;
|
|
}
|
|
|
|
~ImPlotItem() { ID = 0; }
|
|
};
|
|
|
|
// Holds Legend state labels and item references
|
|
struct ImPlotLegendData
|
|
{
|
|
ImVector<int> Indices;
|
|
ImGuiTextBuffer Labels;
|
|
void Reset() { Indices.shrink(0); Labels.Buf.shrink(0); }
|
|
};
|
|
|
|
// Holds Plot state information that must persist after EndPlot
|
|
struct ImPlotPlot
|
|
{
|
|
ImGuiID ID;
|
|
ImPlotFlags Flags;
|
|
ImPlotFlags PreviousFlags;
|
|
ImPlotAxis XAxis;
|
|
ImPlotAxis YAxis[IMPLOT_Y_AXES];
|
|
ImPlotLegendData LegendData;
|
|
ImPool<ImPlotItem> Items;
|
|
ImVec2 SelectStart;
|
|
ImRect SelectRect;
|
|
ImVec2 QueryStart;
|
|
ImRect QueryRect;
|
|
bool Initialized;
|
|
bool Selecting;
|
|
bool Selected;
|
|
bool ContextLocked;
|
|
bool Querying;
|
|
bool Queried;
|
|
bool DraggingQuery;
|
|
bool LegendHovered;
|
|
bool LegendOutside;
|
|
bool LegendFlipSideNextFrame;
|
|
bool FrameHovered;
|
|
bool PlotHovered;
|
|
int ColormapIdx;
|
|
int CurrentYAxis;
|
|
ImPlotLocation MousePosLocation;
|
|
ImPlotLocation LegendLocation;
|
|
ImPlotOrientation LegendOrientation;
|
|
ImRect FrameRect;
|
|
ImRect CanvasRect;
|
|
ImRect PlotRect;
|
|
ImRect AxesRect;
|
|
ImRect LegendRect;
|
|
|
|
ImPlotPlot() {
|
|
Flags = PreviousFlags = ImPlotFlags_None;
|
|
XAxis.Orientation = ImPlotOrientation_Horizontal;
|
|
for (int i = 0; i < IMPLOT_Y_AXES; ++i)
|
|
YAxis[i].Orientation = ImPlotOrientation_Vertical;
|
|
SelectStart = QueryStart = ImVec2(0,0);
|
|
Initialized = Selecting = Selected = ContextLocked = Querying = Queried = DraggingQuery = LegendHovered = LegendOutside = LegendFlipSideNextFrame = false;
|
|
ColormapIdx = CurrentYAxis = 0;
|
|
LegendLocation = ImPlotLocation_North | ImPlotLocation_West;
|
|
LegendOrientation = ImPlotOrientation_Vertical;
|
|
MousePosLocation = ImPlotLocation_South | ImPlotLocation_East;
|
|
}
|
|
|
|
int GetLegendCount() const { return LegendData.Indices.size(); }
|
|
ImPlotItem* GetLegendItem(int i);
|
|
const char* GetLegendLabel(int i);
|
|
|
|
inline bool AnyYInputLocked() const { return YAxis[0].IsInputLocked() || (YAxis[1].Present ? YAxis[1].IsInputLocked() : false) || (YAxis[2].Present ? YAxis[2].IsInputLocked() : false); }
|
|
inline bool AllYInputLocked() const { return YAxis[0].IsInputLocked() && (YAxis[1].Present ? YAxis[1].IsInputLocked() : true ) && (YAxis[2].Present ? YAxis[2].IsInputLocked() : true ); }
|
|
inline bool IsInputLocked() const { return XAxis.IsInputLocked() && YAxis[0].IsInputLocked() && YAxis[1].IsInputLocked() && YAxis[2].IsInputLocked(); }
|
|
};
|
|
|
|
// Temporary data storage for upcoming plot
|
|
struct ImPlotNextPlotData
|
|
{
|
|
ImGuiCond XRangeCond;
|
|
ImGuiCond YRangeCond[IMPLOT_Y_AXES];
|
|
ImPlotRange XRange;
|
|
ImPlotRange YRange[IMPLOT_Y_AXES];
|
|
bool HasXRange;
|
|
bool HasYRange[IMPLOT_Y_AXES];
|
|
bool ShowDefaultTicksX;
|
|
bool ShowDefaultTicksY[IMPLOT_Y_AXES];
|
|
char FmtX[16];
|
|
char FmtY[IMPLOT_Y_AXES][16];
|
|
bool HasFmtX;
|
|
bool HasFmtY[IMPLOT_Y_AXES];
|
|
bool FitX;
|
|
bool FitY[IMPLOT_Y_AXES];
|
|
double* LinkedXmin;
|
|
double* LinkedXmax;
|
|
double* LinkedYmin[IMPLOT_Y_AXES];
|
|
double* LinkedYmax[IMPLOT_Y_AXES];
|
|
|
|
ImPlotNextPlotData() { Reset(); }
|
|
|
|
void Reset() {
|
|
HasXRange = false;
|
|
ShowDefaultTicksX = true;
|
|
HasFmtX = false;
|
|
FitX = false;
|
|
LinkedXmin = LinkedXmax = NULL;
|
|
for (int i = 0; i < IMPLOT_Y_AXES; ++i) {
|
|
HasYRange[i] = false;
|
|
ShowDefaultTicksY[i] = true;
|
|
HasFmtY[i] = false;
|
|
FitY[i] = false;
|
|
LinkedYmin[i] = LinkedYmax[i] = NULL;
|
|
}
|
|
}
|
|
|
|
};
|
|
|
|
// Temporary data storage for upcoming item
|
|
struct ImPlotNextItemData {
|
|
ImVec4 Colors[5]; // ImPlotCol_Line, ImPlotCol_Fill, ImPlotCol_MarkerOutline, ImPlotCol_MarkerFill, ImPlotCol_ErrorBar
|
|
float LineWeight;
|
|
ImPlotMarker Marker;
|
|
float MarkerSize;
|
|
float MarkerWeight;
|
|
float FillAlpha;
|
|
float ErrorBarSize;
|
|
float ErrorBarWeight;
|
|
float DigitalBitHeight;
|
|
float DigitalBitGap;
|
|
bool RenderLine;
|
|
bool RenderFill;
|
|
bool RenderMarkerLine;
|
|
bool RenderMarkerFill;
|
|
bool HasHidden;
|
|
bool Hidden;
|
|
ImGuiCond HiddenCond;
|
|
ImPlotNextItemData() { Reset(); }
|
|
void Reset() {
|
|
for (int i = 0; i < 5; ++i)
|
|
Colors[i] = IMPLOT_AUTO_COL;
|
|
LineWeight = MarkerSize = MarkerWeight = FillAlpha = ErrorBarSize = ErrorBarWeight = DigitalBitHeight = DigitalBitGap = IMPLOT_AUTO;
|
|
Marker = IMPLOT_AUTO;
|
|
HasHidden = Hidden = false;
|
|
}
|
|
};
|
|
|
|
// Holds state information that must persist between calls to BeginPlot()/EndPlot()
|
|
struct ImPlotContext {
|
|
// Plot States
|
|
ImPool<ImPlotPlot> Plots;
|
|
ImPlotPlot* CurrentPlot;
|
|
ImPlotItem* CurrentItem;
|
|
ImPlotItem* PreviousItem;
|
|
|
|
// Tick Marks and Labels
|
|
ImPlotTickCollection CTicks;
|
|
ImPlotTickCollection XTicks;
|
|
ImPlotTickCollection YTicks[IMPLOT_Y_AXES];
|
|
float YAxisReference[IMPLOT_Y_AXES];
|
|
|
|
// Annotation and User Labels
|
|
ImPlotAnnotationCollection Annotations;
|
|
|
|
// Transformations and Data Extents
|
|
ImPlotScale Scales[IMPLOT_Y_AXES];
|
|
ImRect PixelRange[IMPLOT_Y_AXES];
|
|
double Mx;
|
|
double My[IMPLOT_Y_AXES];
|
|
double LogDenX;
|
|
double LogDenY[IMPLOT_Y_AXES];
|
|
ImPlotRange ExtentsX;
|
|
ImPlotRange ExtentsY[IMPLOT_Y_AXES];
|
|
|
|
// Data Fitting Flags
|
|
bool FitThisFrame;
|
|
bool FitX;
|
|
bool FitY[IMPLOT_Y_AXES];
|
|
|
|
// Axis Rendering Flags
|
|
bool RenderX;
|
|
bool RenderY[IMPLOT_Y_AXES];
|
|
|
|
// Axis Locking Flags
|
|
bool ChildWindowMade;
|
|
|
|
// Style and Colormaps
|
|
ImPlotStyle Style;
|
|
ImVector<ImGuiColorMod> ColorModifiers;
|
|
ImVector<ImGuiStyleMod> StyleModifiers;
|
|
ImPlotColormapData ColormapData;
|
|
ImVector<ImPlotColormap> ColormapModifiers;
|
|
|
|
// Time
|
|
tm Tm;
|
|
|
|
// Temp data for general use
|
|
ImVector<double> Temp1, Temp2;
|
|
|
|
// Misc
|
|
int VisibleItemCount;
|
|
int DigitalPlotItemCnt;
|
|
int DigitalPlotOffset;
|
|
ImPlotNextPlotData NextPlotData;
|
|
ImPlotNextItemData NextItemData;
|
|
ImPlotInputMap InputMap;
|
|
ImPlotPoint MousePos[IMPLOT_Y_AXES];
|
|
|
|
// Backend
|
|
void* backendCtx;
|
|
};
|
|
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//-----------------------------------------------------------------------------
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// [SECTION] Internal API
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// No guarantee of forward compatibility here!
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//-----------------------------------------------------------------------------
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namespace ImPlot {
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//-----------------------------------------------------------------------------
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// [SECTION] Context Utils
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//-----------------------------------------------------------------------------
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// Initializes an ImPlotContext
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IMPLOT_API void Initialize(ImPlotContext* ctx);
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// Resets an ImPlot context for the next call to BeginPlot
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IMPLOT_API void Reset(ImPlotContext* ctx);
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//-----------------------------------------------------------------------------
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// [SECTION] Input Utils
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//-----------------------------------------------------------------------------
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// Allows changing how keyboard/mouse interaction works.
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IMPLOT_API ImPlotInputMap& GetInputMap();
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//-----------------------------------------------------------------------------
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// [SECTION] Plot Utils
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//-----------------------------------------------------------------------------
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// Gets a plot from the current ImPlotContext
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IMPLOT_API ImPlotPlot* GetPlot(const char* title);
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// Gets the current plot from the current ImPlotContext
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IMPLOT_API ImPlotPlot* GetCurrentPlot();
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// Busts the cache for every plot in the current context
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IMPLOT_API void BustPlotCache();
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// Shows a plot's context menu.
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IMPLOT_API void ShowPlotContextMenu(ImPlotPlot& plot);
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//-----------------------------------------------------------------------------
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// [SECTION] Item Utils
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//-----------------------------------------------------------------------------
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// Begins a new item. Returns false if the item should not be plotted. Pushes PlotClipRect.
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IMPLOT_API bool BeginItem(const char* label_id, ImPlotCol recolor_from = -1);
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// Ends an item (call only if BeginItem returns true). Pops PlotClipRect.
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IMPLOT_API void EndItem();
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// Register or get an existing item from the current plot.
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IMPLOT_API ImPlotItem* RegisterOrGetItem(const char* label_id, bool* just_created = NULL);
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// Get a plot item from the current plot.
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IMPLOT_API ImPlotItem* GetItem(const char* label_id);
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// Gets the current item.
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IMPLOT_API ImPlotItem* GetCurrentItem();
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// Busts the cache for every item for every plot in the current context.
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IMPLOT_API void BustItemCache();
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//-----------------------------------------------------------------------------
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// [SECTION] Axis Utils
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//-----------------------------------------------------------------------------
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// Gets the current y-axis for the current plot
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static inline int GetCurrentYAxis() { return GImPlot->CurrentPlot->CurrentYAxis; }
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// Updates axis ticks, lins, and label colors
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IMPLOT_API void UpdateAxisColors(int axis_flag, ImPlotAxis* axis);
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// Updates plot-to-pixel space transformation variables for the current plot.
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IMPLOT_API void UpdateTransformCache();
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// Gets the XY scale for the current plot and y-axis
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static inline ImPlotScale GetCurrentScale() { return GImPlot->Scales[GetCurrentYAxis()]; }
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// Returns true if the user has requested data to be fit.
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static inline bool FitThisFrame() { return GImPlot->FitThisFrame; }
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// Extend the the extents of an axis on current plot so that it encompes v
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static inline void FitPointAxis(ImPlotAxis& axis, ImPlotRange& ext, double v) {
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if (!ImNanOrInf(v) && !(ImHasFlag(axis.Flags, ImPlotAxisFlags_LogScale) && v <= 0)) {
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ext.Min = v < ext.Min ? v : ext.Min;
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ext.Max = v > ext.Max ? v : ext.Max;
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}
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}
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// Extend the the extents of an axis on current plot so that it encompes v
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static inline void FitPointMultiAxis(ImPlotAxis& axis, ImPlotAxis& alt, ImPlotRange& ext, double v, double v_alt) {
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if (ImHasFlag(axis.Flags, ImPlotAxisFlags_RangeFit) && !alt.Range.Contains(v_alt))
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return;
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if (!ImNanOrInf(v) && !(ImHasFlag(axis.Flags, ImPlotAxisFlags_LogScale) && v <= 0)) {
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ext.Min = v < ext.Min ? v : ext.Min;
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ext.Max = v > ext.Max ? v : ext.Max;
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}
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}
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// Extends the current plot's axes so that it encompasses a vertical line at x
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static inline void FitPointX(double x) {
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FitPointAxis(GImPlot->CurrentPlot->XAxis, GImPlot->ExtentsX, x);
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}
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// Extends the current plot's axes so that it encompasses a horizontal line at y
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static inline void FitPointY(double y) {
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const ImPlotYAxis y_axis = GImPlot->CurrentPlot->CurrentYAxis;
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FitPointAxis(GImPlot->CurrentPlot->YAxis[y_axis], GImPlot->ExtentsY[y_axis], y);
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}
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// Extends the current plot's axes so that it encompasses point p
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static inline void FitPoint(const ImPlotPoint& p) {
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const ImPlotYAxis y_axis = GImPlot->CurrentPlot->CurrentYAxis;
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FitPointMultiAxis(GImPlot->CurrentPlot->XAxis, GImPlot->CurrentPlot->YAxis[y_axis], GImPlot->ExtentsX, p.x, p.y);
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FitPointMultiAxis(GImPlot->CurrentPlot->YAxis[y_axis], GImPlot->CurrentPlot->XAxis, GImPlot->ExtentsY[y_axis], p.y, p.x);
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}
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// Returns true if two ranges overlap
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static inline bool RangesOverlap(const ImPlotRange& r1, const ImPlotRange& r2)
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{ return r1.Min <= r2.Max && r2.Min <= r1.Max; }
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// Updates pointers for linked axes from axis internal range.
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IMPLOT_API void PushLinkedAxis(ImPlotAxis& axis);
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// Updates axis internal range from points for linked axes.
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IMPLOT_API void PullLinkedAxis(ImPlotAxis& axis);
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// Shows an axis's context menu.
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IMPLOT_API void ShowAxisContextMenu(ImPlotAxis& axis, ImPlotAxis* equal_axis, bool time_allowed = false);
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// Get format spec for axis
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static inline const char* GetFormatX() { return GImPlot->NextPlotData.HasFmtX ? GImPlot->NextPlotData.FmtX : IMPLOT_LABEL_FMT; }
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static inline const char* GetFormatY(ImPlotYAxis y) { return GImPlot->NextPlotData.HasFmtY[y] ? GImPlot->NextPlotData.FmtY[y] : IMPLOT_LABEL_FMT; }
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//-----------------------------------------------------------------------------
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// [SECTION] Legend Utils
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//-----------------------------------------------------------------------------
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// Gets the position of an inner rect that is located inside of an outer rect according to an ImPlotLocation and padding amount.
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IMPLOT_API ImVec2 GetLocationPos(const ImRect& outer_rect, const ImVec2& inner_size, ImPlotLocation location, const ImVec2& pad = ImVec2(0,0));
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// Calculates the bounding box size of a legend
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IMPLOT_API ImVec2 CalcLegendSize(ImPlotPlot& plot, const ImVec2& pad, const ImVec2& spacing, ImPlotOrientation orientation);
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// Renders legend entries into a bounding box
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IMPLOT_API void ShowLegendEntries(ImPlotPlot& plot, const ImRect& legend_bb, bool interactable, const ImVec2& pad, const ImVec2& spacing, ImPlotOrientation orientation, ImDrawList& DrawList);
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// Shows an alternate legend for the plot identified by #title_id, outside of the plot frame (can be called before or after of Begin/EndPlot but must occur in the same ImGui window!).
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IMPLOT_API void ShowAltLegend(const char* title_id, ImPlotOrientation orientation = ImPlotOrientation_Vertical, const ImVec2 size = ImVec2(0,0), bool interactable = true);
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//-----------------------------------------------------------------------------
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// [SECTION] Tick Utils
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//-----------------------------------------------------------------------------
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// Label a tick with time formatting.
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IMPLOT_API void LabelTickTime(ImPlotTick& tick, ImGuiTextBuffer& buffer, const ImPlotTime& t, ImPlotDateTimeFmt fmt);
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// Populates a list of ImPlotTicks with normal spaced and formatted ticks
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IMPLOT_API void AddTicksDefault(const ImPlotRange& range, float pix, ImPlotOrientation orn, ImPlotTickCollection& ticks, const char* fmt);
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// Populates a list of ImPlotTicks with logarithmic space and formatted ticks
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IMPLOT_API void AddTicksLogarithmic(const ImPlotRange& range, float pix, ImPlotOrientation orn, ImPlotTickCollection& ticks, const char* fmt);
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// Populates a list of ImPlotTicks with time formatted ticks.
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IMPLOT_API void AddTicksTime(const ImPlotRange& range, float plot_width, ImPlotTickCollection& ticks);
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// Populates a list of ImPlotTicks with custom spaced and labeled ticks
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IMPLOT_API void AddTicksCustom(const double* values, const char* const labels[], int n, ImPlotTickCollection& ticks, const char* fmt);
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// Create a a string label for a an axis value
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IMPLOT_API int LabelAxisValue(const ImPlotAxis& axis, const ImPlotTickCollection& ticks, double value, char* buff, int size);
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//-----------------------------------------------------------------------------
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// [SECTION] Styling Utils
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//-----------------------------------------------------------------------------
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// Get styling data for next item (call between Begin/EndItem)
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static inline const ImPlotNextItemData& GetItemData() { return GImPlot->NextItemData; }
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// Returns true if a color is set to be automatically determined
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static inline bool IsColorAuto(const ImVec4& col) { return col.w == -1; }
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// Returns true if a style color is set to be automaticaly determined
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static inline bool IsColorAuto(ImPlotCol idx) { return IsColorAuto(GImPlot->Style.Colors[idx]); }
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// Returns the automatically deduced style color
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IMPLOT_API ImVec4 GetAutoColor(ImPlotCol idx);
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// Returns the style color whether it is automatic or custom set
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static inline ImVec4 GetStyleColorVec4(ImPlotCol idx) { return IsColorAuto(idx) ? GetAutoColor(idx) : GImPlot->Style.Colors[idx]; }
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static inline ImU32 GetStyleColorU32(ImPlotCol idx) { return ImGui::ColorConvertFloat4ToU32(GetStyleColorVec4(idx)); }
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// Draws vertical text. The position is the bottom left of the text rect.
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IMPLOT_API void AddTextVertical(ImDrawList *DrawList, ImVec2 pos, ImU32 col, const char* text_begin, const char* text_end = NULL);
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// Calculates the size of vertical text
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static inline ImVec2 CalcTextSizeVertical(const char *text) {
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ImVec2 sz = ImGui::CalcTextSize(text);
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return ImVec2(sz.y, sz.x);
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}
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// Returns white or black text given background color
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static inline ImU32 CalcTextColor(const ImVec4& bg) { return (bg.x * 0.299 + bg.y * 0.587 + bg.z * 0.114) > 0.5 ? IM_COL32_BLACK : IM_COL32_WHITE; }
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static inline ImU32 CalcTextColor(ImU32 bg) { return CalcTextColor(ImGui::ColorConvertU32ToFloat4(bg)); }
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// Lightens or darkens a color for hover
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static inline ImU32 CalcHoverColor(ImU32 col) { return ImMixU32(col, CalcTextColor(col), 32); }
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// Clamps a label position so that it fits a rect defined by Min/Max
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static inline ImVec2 ClampLabelPos(ImVec2 pos, const ImVec2& size, const ImVec2& Min, const ImVec2& Max) {
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if (pos.x < Min.x) pos.x = Min.x;
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if (pos.y < Min.y) pos.y = Min.y;
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if ((pos.x + size.x) > Max.x) pos.x = Max.x - size.x;
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if ((pos.y + size.y) > Max.y) pos.y = Max.y - size.y;
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return pos;
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}
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// Returns a color from the Color map given an index >= 0 (modulo will be performed).
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IMPLOT_API ImU32 GetColormapColorU32(int idx, ImPlotColormap cmap);
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// Returns the next unused colormap color and advances the colormap. Can be used to skip colors if desired.
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IMPLOT_API ImU32 NextColormapColorU32();
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// Linearly interpolates a color from the current colormap given t between 0 and 1.
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IMPLOT_API ImU32 SampleColormapU32(float t, ImPlotColormap cmap);
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// Render a colormap bar
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IMPLOT_API void RenderColorBar(const ImU32* colors, int size, ImDrawList& DrawList, const ImRect& bounds, bool vert, bool reversed, bool continuous);
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//-----------------------------------------------------------------------------
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// [SECTION] Math and Misc Utils
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//-----------------------------------------------------------------------------
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// Rounds x to powers of 2,5 and 10 for generating axis labels (from Graphics Gems 1 Chapter 11.2)
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IMPLOT_API double NiceNum(double x, bool round);
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// Computes order of magnitude of double.
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static inline int OrderOfMagnitude(double val) { return val == 0 ? 0 : (int)(floor(log10(fabs(val)))); }
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// Returns the precision required for a order of magnitude.
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static inline int OrderToPrecision(int order) { return order > 0 ? 0 : 1 - order; }
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// Returns a floating point precision to use given a value
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static inline int Precision(double val) { return OrderToPrecision(OrderOfMagnitude(val)); }
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// Round a value to a given precision
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static inline double RoundTo(double val, int prec) { double p = pow(10,(double)prec); return floor(val*p+0.5)/p; }
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// Returns the intersection point of two lines A and B (assumes they are not parallel!)
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static inline ImVec2 Intersection(const ImVec2& a1, const ImVec2& a2, const ImVec2& b1, const ImVec2& b2) {
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float v1 = (a1.x * a2.y - a1.y * a2.x); float v2 = (b1.x * b2.y - b1.y * b2.x);
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float v3 = ((a1.x - a2.x) * (b1.y - b2.y) - (a1.y - a2.y) * (b1.x - b2.x));
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return ImVec2((v1 * (b1.x - b2.x) - v2 * (a1.x - a2.x)) / v3, (v1 * (b1.y - b2.y) - v2 * (a1.y - a2.y)) / v3);
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}
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// Fills a buffer with n samples linear interpolated from vmin to vmax
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template <typename T>
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void FillRange(ImVector<T>& buffer, int n, T vmin, T vmax) {
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buffer.resize(n);
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T step = (vmax - vmin) / (n - 1);
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for (int i = 0; i < n; ++i) {
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buffer[i] = vmin + i * step;
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}
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}
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// Offsets and strides a data buffer
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template <typename T>
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static inline T OffsetAndStride(const T* data, int idx, int count, int offset, int stride) {
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idx = ImPosMod(offset + idx, count);
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return *(const T*)(const void*)((const unsigned char*)data + (size_t)idx * stride);
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}
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// Calculate histogram bin counts and widths
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template <typename T>
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static inline void CalculateBins(const T* values, int count, ImPlotBin meth, const ImPlotRange& range, int& bins_out, double& width_out) {
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switch (meth) {
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case ImPlotBin_Sqrt:
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bins_out = (int)ceil(sqrt(count));
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break;
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case ImPlotBin_Sturges:
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bins_out = (int)ceil(1.0 + log2(count));
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break;
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case ImPlotBin_Rice:
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bins_out = (int)ceil(2 * cbrt(count));
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break;
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case ImPlotBin_Scott:
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width_out = 3.49 * ImStdDev(values, count) / cbrt(count);
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bins_out = (int)round(range.Size() / width_out);
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break;
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}
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width_out = range.Size() / bins_out;
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}
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//-----------------------------------------------------------------------------
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// Time Utils
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//-----------------------------------------------------------------------------
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// Returns true if year is leap year (366 days long)
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static inline bool IsLeapYear(int year) {
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return year % 4 == 0 && (year % 100 != 0 || year % 400 == 0);
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}
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// Returns the number of days in a month, accounting for Feb. leap years. #month is zero indexed.
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static inline int GetDaysInMonth(int year, int month) {
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static const int days[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
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return days[month] + (int)(month == 1 && IsLeapYear(year));
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}
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// Make a UNIX timestamp from a tm struct expressed in UTC time (i.e. GMT timezone).
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IMPLOT_API ImPlotTime MkGmtTime(struct tm *ptm);
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// Make a tm struct expressed in UTC time (i.e. GMT timezone) from a UNIX timestamp.
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IMPLOT_API tm* GetGmtTime(const ImPlotTime& t, tm* ptm);
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// Make a UNIX timestamp from a tm struct expressed in local time.
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IMPLOT_API ImPlotTime MkLocTime(struct tm *ptm);
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// Make a tm struct expressed in local time from a UNIX timestamp.
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IMPLOT_API tm* GetLocTime(const ImPlotTime& t, tm* ptm);
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// NB: The following functions only work if there is a current ImPlotContext because the
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// internal tm struct is owned by the context! They are aware of ImPlotStyle.UseLocalTime.
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// Make a timestamp from time components.
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// year[1970-3000], month[0-11], day[1-31], hour[0-23], min[0-59], sec[0-59], us[0,999999]
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IMPLOT_API ImPlotTime MakeTime(int year, int month = 0, int day = 1, int hour = 0, int min = 0, int sec = 0, int us = 0);
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// Get year component from timestamp [1970-3000]
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IMPLOT_API int GetYear(const ImPlotTime& t);
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// Adds or subtracts time from a timestamp. #count > 0 to add, < 0 to subtract.
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IMPLOT_API ImPlotTime AddTime(const ImPlotTime& t, ImPlotTimeUnit unit, int count);
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// Rounds a timestamp down to nearest unit.
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IMPLOT_API ImPlotTime FloorTime(const ImPlotTime& t, ImPlotTimeUnit unit);
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// Rounds a timestamp up to the nearest unit.
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IMPLOT_API ImPlotTime CeilTime(const ImPlotTime& t, ImPlotTimeUnit unit);
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// Rounds a timestamp up or down to the nearest unit.
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IMPLOT_API ImPlotTime RoundTime(const ImPlotTime& t, ImPlotTimeUnit unit);
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// Combines the date of one timestamp with the time-of-day of another timestamp.
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IMPLOT_API ImPlotTime CombineDateTime(const ImPlotTime& date_part, const ImPlotTime& time_part);
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// Formats the time part of timestamp t into a buffer according to #fmt
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IMPLOT_API int FormatTime(const ImPlotTime& t, char* buffer, int size, ImPlotTimeFmt fmt, bool use_24_hr_clk);
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// Formats the date part of timestamp t into a buffer according to #fmt
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IMPLOT_API int FormatDate(const ImPlotTime& t, char* buffer, int size, ImPlotDateFmt fmt, bool use_iso_8601);
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// Formats the time and/or date parts of a timestamp t into a buffer according to #fmt
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IMPLOT_API int FormatDateTime(const ImPlotTime& t, char* buffer, int size, ImPlotDateTimeFmt fmt);
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// Shows a date picker widget block (year/month/day).
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// #level = 0 for day, 1 for month, 2 for year. Modified by user interaction.
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// #t will be set when a day is clicked and the function will return true.
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// #t1 and #t2 are optional dates to highlight.
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IMPLOT_API bool ShowDatePicker(const char* id, int* level, ImPlotTime* t, const ImPlotTime* t1 = NULL, const ImPlotTime* t2 = NULL);
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// Shows a time picker widget block (hour/min/sec).
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// #t will be set when a new hour, minute, or sec is selected or am/pm is toggled, and the function will return true.
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IMPLOT_API bool ShowTimePicker(const char* id, ImPlotTime* t);
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} // namespace ImPlot
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