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fix up time format demo
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epezent
parent
d23bd30a44
commit
901f0558b1
62
implot.cpp
62
implot.cpp
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@ -107,7 +107,6 @@ ImPlotStyle::ImPlotStyle() {
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ErrorBarWeight = 1.5f;
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DigitalBitHeight = 8;
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DigitalBitGap = 4;
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AntiAliasedLines = false;
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PlotBorderSize = 1;
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MinorAlpha = 0.25f;
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@ -124,6 +123,9 @@ ImPlotStyle::ImPlotStyle() {
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PlotMinSize = ImVec2(300,225);
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ImPlot::StyleColorsAuto(this);
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AntiAliasedLines = false;
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UseLocalTime = false;
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}
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namespace ImPlot {
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@ -646,7 +648,7 @@ inline int GetTimeStep(int max_divs, ImPlotTimeUnit unit) {
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return 0;
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}
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inline time_t MakeGmTime(const struct tm *ptm) {
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ImPlotTime MkGmtTime(struct tm *ptm) {
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time_t secs = 0;
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int year = ptm->tm_year + 1900;
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for (int y = 1970; y < year; ++y)
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@ -657,21 +659,52 @@ inline time_t MakeGmTime(const struct tm *ptm) {
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secs += ptm->tm_hour * 3600;
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secs += ptm->tm_min * 60;
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secs += ptm->tm_sec;
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return secs;
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return ImPlotTime(secs,0);
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}
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inline tm* GetGmTime(const time_t* time, tm* tm)
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tm* GetGmtTime(const ImPlotTime& t, tm* ptm)
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{
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#ifdef _WIN32
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if (gmtime_s(tm, time) == 0)
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return tm;
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if (gmtime_s(ptm, &t.S) == 0)
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return ptm;
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else
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return NULL;
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#else
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return gmtime_r(time, tm);
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return gmtime_r(&t.S, ptm);
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#endif
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}
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ImPlotTime MkLocTime(struct tm *ptm) {
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ImPlotTime t;
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t.S = mktime(ptm);
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return t;
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}
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tm* GetLocTime(const ImPlotTime& t, tm* ptm) {
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#ifdef _WIN32
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if (localtime_s(ptm, &t.S) == 0)
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return ptm;
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else
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return NULL;
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#else
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return localtime_r(&t.S, ptm);
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#endif
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}
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inline ImPlotTime MkTime(struct tm *ptm) {
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if (GetStyle().UseLocalTime)
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return MkLocTime(ptm);
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else
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return MkGmtTime(ptm);
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}
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inline tm* GetTime(const ImPlotTime& t, tm* ptm) {
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if (GetStyle().UseLocalTime)
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return GetLocTime(t,ptm);
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else
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return GetGmtTime(t,ptm);
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}
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ImPlotTime AddTime(const ImPlotTime& t, ImPlotTimeUnit unit, int count) {
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tm& Tm = GImPlot->Tm;
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ImPlotTime t_out = t;
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@ -683,7 +716,7 @@ ImPlotTime AddTime(const ImPlotTime& t, ImPlotTimeUnit unit, int count) {
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case ImPlotTimeUnit_Hr: t_out.S += count * 3600; break;
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case ImPlotTimeUnit_Day: t_out.S += count * 86400; break;
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case ImPlotTimeUnit_Mo: for (int i = 0; i < count; ++i) { // this might have a bug
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GetGmTime(&t.S, &Tm);
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GetTime(t_out, &Tm);
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t_out.S += 86400 * GetDaysInMonth(Tm.tm_year + 1900, Tm.tm_mon);
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}
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break;
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@ -701,8 +734,7 @@ ImPlotTime AddTime(const ImPlotTime& t, ImPlotTimeUnit unit, int count) {
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}
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ImPlotTime FloorTime(const ImPlotTime& t, ImPlotTimeUnit unit) {
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GetGmTime(&t.S, &GImPlot->Tm);
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GImPlot->Tm.tm_isdst = -1;
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GetTime(t, &GImPlot->Tm);
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switch (unit) {
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case ImPlotTimeUnit_S: return ImPlotTime(t.S, 0);
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case ImPlotTimeUnit_Ms: return ImPlotTime(t.S, (t.Us / 1000) * 1000);
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@ -714,7 +746,7 @@ ImPlotTime FloorTime(const ImPlotTime& t, ImPlotTimeUnit unit) {
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case ImPlotTimeUnit_Min: GImPlot->Tm.tm_sec = 0; break;
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default: return t;
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}
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return ImPlotTime(MakeGmTime(&GImPlot->Tm),0);
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return MkTime(&GImPlot->Tm);
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}
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ImPlotTime CeilTime(const ImPlotTime& t, ImPlotTimeUnit unit) {
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@ -731,7 +763,7 @@ ImPlotTime RoundTime(const ImPlotTime& t, ImPlotTimeUnit unit) {
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int GetYear(const ImPlotTime& t) {
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tm& Tm = GImPlot->Tm;
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GetGmTime(&t.S, &Tm);
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GetTime(t, &Tm);
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return Tm.tm_year + 1900;
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}
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@ -747,14 +779,12 @@ ImPlotTime MakeYear(int year) {
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Tm.tm_mon = 0;
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Tm.tm_year = yr;
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Tm.tm_sec = 0;
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Tm.tm_isdst = -1;
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time_t s = MakeGmTime(&Tm);
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return ImPlotTime(s);
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return MkTime(&Tm);
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}
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int FormatTime(const ImPlotTime& t, char* buffer, int size, ImPlotTimeFmt fmt) {
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tm& Tm = GImPlot->Tm;
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GetGmTime(&t.S, &Tm);
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GetTime(t, &Tm);
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const char* ap = Tm.tm_hour < 12 ? "am" : "pm";
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const int us = t.Us % 1000;
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5
implot.h
5
implot.h
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@ -217,7 +217,6 @@ struct ImPlotStyle {
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float DigitalBitHeight; // = 8, digital channels bit height (at y = 1.0f) in pixels
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float DigitalBitGap; // = 4, digital channels bit padding gap in pixels
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// plot styling variables
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bool AntiAliasedLines; // = false, enable global anti-aliasing on plot lines (overrides ImPlotFlags_AntiAliased)
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float PlotBorderSize; // = 1, line thickness of border around plot area
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float MinorAlpha; // = 0.25 alpha multiplier applied to minor axis grid lines
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ImVec2 MajorTickLen; // = 10,10 major tick lengths for X and Y axes
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@ -231,7 +230,11 @@ struct ImPlotStyle {
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ImVec2 LegendPadding; // = 10,10 legend padding from top-left of plot
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ImVec2 InfoPadding; // = 10,10 padding between plot edge and interior info text
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ImVec2 PlotMinSize; // = 300,225 minimum size plot frame can be when shrunk
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// colors
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ImVec4 Colors[ImPlotCol_COUNT]; // array of plot specific colors
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// settings/flags
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bool AntiAliasedLines; // = false, enable global anti-aliasing on plot lines (overrides ImPlotFlags_AntiAliased)
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bool UseLocalTime; // = false, axis labels will be formatted for your timezone when ImPlotAxisFlag_Time is enabled
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ImPlotStyle();
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};
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@ -26,6 +26,7 @@
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <time.h>
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#ifdef _MSC_VER
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#define sprintf sprintf_s
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@ -124,6 +125,25 @@ struct RollingBuffer {
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}
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};
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// Huge data used by Time Formatting example (~500 MB allocation!)
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struct HugeTimeData {
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HugeTimeData(double min) {
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Ts = new double[Size];
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Ys = new double[Size];
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for (int i = 0; i < Size; ++i) {
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Ts[i] = min + i;
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Ys[i] = GetY(Ts[i]);
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}
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}
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~HugeTimeData() { delete[] Ts; delete[] Ys; }
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static double GetY(double t) {
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return 0.5 + 0.25 * sin(t/86400/12) + 0.005 * sin(t/3600);
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}
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double* Ts;
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double* Ys;
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static const int Size = 60*60*24*366;
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};
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void ShowDemoWindow(bool* p_open) {
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t_float DEMO_TIME = (t_float)ImGui::GetTime();
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static bool show_imgui_metrics = false;
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@ -591,11 +611,42 @@ void ShowDemoWindow(bool* p_open) {
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}
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}
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if (ImGui::CollapsingHeader("Time Formatted Axes")) {
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static double min = 1577836800; // 01/01/2020 @ 12:00:00am (UTC)
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static double max = 1609459200; // 01/01/2021 @ 12:00:00am (UTC)
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ImPlot::SetNextPlotLimits(min,max,0,1);
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if (ImPlot::BeginPlot("##Time", "UTC Time", "Y-Axis", ImVec2(-1,0), 0, ImPlotAxisFlags_Time)) {
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static double t_min = 1577836800; // 01/01/2020 @ 12:00:00am (UTC)
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static double t_max = 1609459200; // 01/01/2021 @ 12:00:00am (UTC)
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ImGui::BulletText("When ImPlotAxisFlags_Time is enabled on the X-Axis, values are interpreted as\n"
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"UNIX timestamps in seconds and axis labels are formated as date/time.");
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ImGui::BulletText("By default, labels are in UTC time but can be set to use local time instead.");
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ImGui::Checkbox("Use Local Time",&ImPlot::GetStyle().UseLocalTime);
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static HugeTimeData* data = NULL;
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if (data == NULL) {
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ImGui::SameLine();
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if (ImGui::Button("Generate Huge Data (~500MB!)")) {
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static HugeTimeData sdata(t_min);
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data = &sdata;
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}
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}
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ImPlot::SetNextPlotLimits(t_min,t_max,0,1);
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if (ImPlot::BeginPlot("##Time", "Time", "Value", ImVec2(-1,0), 0, ImPlotAxisFlags_Time)) {
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if (data != NULL) {
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// downsample our data
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int downsample = (int)ImPlot::GetPlotLimits().X.Size() / 1000 + 1;
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int start = (int)(ImPlot::GetPlotLimits().X.Min - t_min);
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start = start < 0 ? 0 : start > HugeTimeData::Size - 1 ? HugeTimeData::Size - 1 : start;
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int end = (int)(ImPlot::GetPlotLimits().X.Max - t_min) + 1000;
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end = end < 0 ? 0 : end > HugeTimeData::Size - 1 ? HugeTimeData::Size - 1 : end;
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int size = (end - start)/downsample;
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// plot it
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ImPlot::PlotLine("Time Series", &data->Ts[start], &data->Ys[start], size, 0, sizeof(double)*downsample);
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}
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// plot time now
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double t_now = (double)time(0);
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double y_now = HugeTimeData::GetY(t_now);
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ImPlot::PlotScatter("Now",&t_now,&y_now,1);
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ImPlot::EndPlot();
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}
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}
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@ -1133,8 +1184,9 @@ void ShowDemoWindow(bool* p_open) {
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static ImVec4 bearCol = ImVec4(0.853f, 0.050f, 0.310f, 1.000f);
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ImGui::SameLine(); ImGui::ColorEdit4("##Bull", &bullCol.x, ImGuiColorEditFlags_NoInputs);
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ImGui::SameLine(); ImGui::ColorEdit4("##Bear", &bearCol.x, ImGuiColorEditFlags_NoInputs);
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ImPlot::GetStyle().UseLocalTime = false;
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ImPlot::SetNextPlotLimits(1546300800, 1571961600, 1250, 1600);
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if (ImPlot::BeginPlot("Candlestick Chart","Day","USD",ImVec2(-1,-1),0,ImPlotAxisFlags_Time)) {
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if (ImPlot::BeginPlot("Candlestick Chart","Day","USD",ImVec2(-1,0),0,ImPlotAxisFlags_Time)) {
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MyImPlot::PlotCandlestick("GOOGL",dates, opens, closes, lows, highs, 218, tooltip, 0.25f, bullCol, bearCol);
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ImPlot::EndPlot();
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}
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@ -577,7 +577,7 @@ struct ImPlotAxisScale
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}
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};
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/// Two part time struct.
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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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@ -777,8 +777,7 @@ inline T OffsetAndStride(const T* data, int idx, int count, int offset, int stri
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// Time Utils
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//-----------------------------------------------------------------------------
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// NB: These functions only work if there is a current ImPlotContext because the
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// internal tm struct is owned by the context!
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// Returns true if year is leap year (366 days long)
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inline bool IsLeapYear(int year) {
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@ -793,6 +792,19 @@ inline int GetDaysInMonth(int year, int month) {
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return days[month] + (int)(month == 1 && IsLeapYear(year));
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}
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// Make a timestamp from a tm struct expressed as a UTC time (i.e. GMT timezone).
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ImPlotTime MkGmtTime(struct tm *ptm);
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// Make a tm struct from a timestamp expressed as a UTC time (i.e. GMT timezone).
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tm* GetGmtTime(const ImPlotTime& t, tm* ptm);
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// Make a timestamp from a tm struct expressed as a local time.
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ImPlotTime MkLocTime(struct tm *ptm);
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// Make a tm struct from a timestamp expressed as a local time.
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tm* GetLocTime(const ImPlotTime& t, tm* ptm);
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// NB: These functions only work if there is a current ImPlotContext because the
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// internal tm struct is owned by the context!
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// Adds time to a timestamp. #count must be positive!
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ImPlotTime AddTime(const ImPlotTime& t, ImPlotTimeUnit unit, int count);
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// Rounds a timestamp down to nearest.
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