gwm17/implot
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merge linked axes

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This commit is contained in:
epezent 2020-09-06 16:09:00 -05:00
parent 42d267f7f4 fc1962cdef
commit 2206af8c1e
4 changed files with 77 additions and 3 deletions
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39
implot.cpp
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@ -415,6 +415,16 @@ void FitPoint(const ImPlotPoint& p) {
}
}
void PushLinkedAxis(ImPlotAxis& axis) {
if (axis.LinkedMin) { *axis.LinkedMin = axis.Range.Min; }
if (axis.LinkedMax) { *axis.LinkedMax = axis.Range.Max; }
}
void PullLinkedAxis(ImPlotAxis& axis) {
if (axis.LinkedMin) { axis.SetMin(*axis.LinkedMin); }
if (axis.LinkedMax) { axis.SetMax(*axis.LinkedMax); }
}
//-----------------------------------------------------------------------------
// Coordinate Utils
//-----------------------------------------------------------------------------
@ -1094,6 +1104,16 @@ bool BeginPlot(const char* title, const char* x_label, const char* y_label, cons
// NextPlotData -----------------------------------------------------------
// linked axes
plot.XAxis.LinkedMin = gp.NextPlotData.LinkedXmin;
plot.XAxis.LinkedMax = gp.NextPlotData.LinkedXmax;
PullLinkedAxis(plot.XAxis);
for (int i = 0; i < IMPLOT_Y_AXES; ++i) {
plot.YAxis[i].LinkedMin = gp.NextPlotData.LinkedYmin[i];
plot.YAxis[i].LinkedMax = gp.NextPlotData.LinkedYmax[i];
PullLinkedAxis(plot.YAxis[i]);
}
if (gp.NextPlotData.HasXRange) {
if (just_created || gp.NextPlotData.XRangeCond == ImGuiCond_Always)
plot.XAxis.SetRange(gp.NextPlotData.X);
@ -2099,6 +2119,13 @@ void EndPlot() {
ImGui::PopID();
}
// LINKED AXES ------------------------------------------------------------
PushLinkedAxis(plot.XAxis);
for (int i = 0; i < IMPLOT_Y_AXES; ++i)
PushLinkedAxis(plot.YAxis[i]);
// CLEANUP ----------------------------------------------------------------
// reset the plot items for the next frame
@ -2147,6 +2174,18 @@ void SetNextPlotLimitsY(double y_min, double y_max, ImGuiCond cond, int y_axis)
gp.NextPlotData.Y[y_axis].Max = y_max;
}
void LinkNextPlotLimits(double* xmin, double* xmax, double* ymin, double* ymax, double* ymin2, double* ymax2, double* ymin3, double* ymax3) {
ImPlotContext& gp = *GImPlot;
gp.NextPlotData.LinkedXmin = xmin;
gp.NextPlotData.LinkedXmax = xmax;
gp.NextPlotData.LinkedYmin[0] = ymin;
gp.NextPlotData.LinkedYmax[0] = ymax;
gp.NextPlotData.LinkedYmin[1] = ymin2;
gp.NextPlotData.LinkedYmax[1] = ymax2;
gp.NextPlotData.LinkedYmin[2] = ymin3;
gp.NextPlotData.LinkedYmax[2] = ymax3;
}
void FitNextPlotAxes(bool x, bool y, bool y2, bool y3) {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot == NULL, "FitNextPlotAxes() needs to be called before BeginPlot()!");

8
implot.h
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@ -382,11 +382,13 @@ void PlotText(const char* text, double x, double y, bool vertical = false, const
//-----------------------------------------------------------------------------
// Set the axes range limits of the next plot. Call right before BeginPlot(). If ImGuiCond_Always is used, the axes limits will be locked.
void SetNextPlotLimits(double x_min, double x_max, double y_min, double y_max, ImGuiCond cond = ImGuiCond_Once);
void SetNextPlotLimits(double xmin, double xmax, double ymin, double ymax, ImGuiCond cond = ImGuiCond_Once);
// Set the X axis range limits of the next plot. Call right before BeginPlot(). If ImGuiCond_Always is used, the X axis limits will be locked.
void SetNextPlotLimitsX(double x_min, double x_max, ImGuiCond cond = ImGuiCond_Once);
void SetNextPlotLimitsX(double xmin, double xmax, ImGuiCond cond = ImGuiCond_Once);
// Set the Y axis range limits of the next plot. Call right before BeginPlot(). If ImGuiCond_Always is used, the Y axis limits will be locked.
void SetNextPlotLimitsY(double y_min, double y_max, ImGuiCond cond = ImGuiCond_Once, int y_axis = 0);
void SetNextPlotLimitsY(double ymin, double ymax, ImGuiCond cond = ImGuiCond_Once, int y_axis = 0);
// Links the next plot limits to external values. Set to NULL for no linkage. The pointer data must remain valid until the matching call EndPlot.
void LinkNextPlotLimits(double* xmin, double* xmax, double* ymin, double* ymax, double* ymin2 = NULL, double* ymax2 = NULL, double* ymin3 = NULL, double* ymax3 = NULL);
// Fits the next plot axes to all plotted data if they are unlocked (equivalent to double-clicks).
void FitNextPlotAxes(bool x = true, bool y = true, bool y2 = true, bool y3 = true);

19
implot_demo.cpp
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@ -693,6 +693,25 @@ void ShowDemoWindow(bool* p_open) {
}
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Linked Axes")) {
static double xmin = 0, xmax = 1, ymin = 0, ymax = 1;
static bool linkx = true, linky = true;
t_float data[2] = {0,1};
ImGui::Checkbox("Link X", &linkx);
ImGui::SameLine();
ImGui::Checkbox("Link Y", &linky);
ImPlot::LinkNextPlotLimits(linkx ? &xmin : NULL , linkx ? &xmax : NULL, linky ? &ymin : NULL, linky ? &ymax : NULL);
if (ImPlot::BeginPlot("Plot A")) {
ImPlot::PlotLine("Line",data,2);
ImPlot::EndPlot();
}
ImPlot::LinkNextPlotLimits(linkx ? &xmin : NULL , linkx ? &xmax : NULL, linky ? &ymin : NULL, linky ? &ymax : NULL);
if (ImPlot::BeginPlot("Plot B")) {
ImPlot::PlotLine("Line",data,2);
ImPlot::EndPlot();
}
}
//-------------------------------------------------------------------------
if (ImGui::CollapsingHeader("Querying")) {
static ImVector<t_float2> data;
static ImPlotLimits range, query;

14
implot_internal.h
View File

@ -295,6 +295,8 @@ struct ImPlotAxis
bool Dragging;
bool HoveredExt;
bool HoveredTot;
double* LinkedMin;
double* LinkedMax;
ImPlotAxis() {
Flags = PreviousFlags = ImPlotAxisFlags_None;
@ -303,6 +305,7 @@ struct ImPlotAxis
Dragging = false;
HoveredExt = false;
HoveredTot = false;
LinkedMin = LinkedMax = NULL;
}
bool SetMin(double _min) {
@ -453,15 +456,21 @@ struct ImPlotNextPlotData
bool ShowDefaultTicksY[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() {
HasXRange = false;
ShowDefaultTicksX = true;
FitX = false;
LinkedXmin = LinkedXmax = NULL;
for (int i = 0; i < IMPLOT_Y_AXES; ++i) {
HasYRange[i] = false;
ShowDefaultTicksY[i] = true;
FitY[i] = false;
LinkedYmin[i] = LinkedYmax[i] = NULL;
}
}
};
@ -675,6 +684,11 @@ void FitPoint(const ImPlotPoint& p);
inline bool RangesOverlap(const ImPlotRange& r1, const ImPlotRange& r2)
{ return r1.Min <= r2.Max && r2.Min <= r1.Max; }
// Updates pointers for linked axes from axis internal range.
void PushLinkedAxis(ImPlotAxis& axis);
// Updates axis internal range from points for linked axes.
void PullLinkedAxis(ImPlotAxis& axis);
//-----------------------------------------------------------------------------
// [SECTION] Legend Utils
//-----------------------------------------------------------------------------