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implot.cpp
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// MIT License
// Copyright (c) 2020 Evan Pezent
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// ImPlot v0.8 WIP
/*
API BREAKING CHANGES
====================
Occasionally introducing changes that are breaking the API. We try to make the breakage minor and easy to fix.
Below is a change-log of API breaking changes only. If you are using one of the functions listed, expect to have to fix some code.
When you are not sure about a old symbol or function name, try using the Search/Find function of your IDE to look for comments or references in all implot files.
You can read releases logs https://github.com/epezent/implot/releases for more details.
- 2020/09/07 (0.8) - Plotting functions which accept a custom getter function pointer have been post-fixed with a G (e.g. PlotLineG)
- 2020/09/06 (0.7) - Several flags under ImPlotFlags and ImPlotAxisFlags were inverted (e.g. ImPlotFlags_Legend -> ImPlotFlags_NoLegend) so that the default flagset
is simply 0. This more closely matches ImGui's style and makes it easier to enable non-default but commonly used flags (e.g. ImPlotAxisFlags_Time).
- 2020/08/28 (0.5) - ImPlotMarker_ can no longer be combined with bitwise OR, |. This features caused unecessary slow-down, and almost no one used it.
- 2020/08/25 (0.5) - ImPlotAxisFlags_Scientific was removed. Logarithmic axes automatically uses scientific notation.
- 2020/08/17 (0.5) - PlotText was changed so that text is centered horizontally and vertically about the desired point.
- 2020/08/16 (0.5) - An ImPlotContext must be explicitly created and destroyed now with `CreateContext` and `DestroyContext`. Previously, the context was statically initialized in this source file.
- 2020/06/13 (0.4) - The flags `ImPlotAxisFlag_Adaptive` and `ImPlotFlags_Cull` were removed. Both are now done internally by default.
- 2020/06/03 (0.3) - The signature and behavior of PlotPieChart was changed so that data with sum less than 1 can optionally be normalized. The label format can now be specified as well.
- 2020/06/01 (0.3) - SetPalette was changed to `SetColormap` for consistency with other plotting libraries. `RestorePalette` was removed. Use `SetColormap(ImPlotColormap_Default)`.
- 2020/05/31 (0.3) - Plot functions taking custom ImVec2* getters were removed. Use the ImPlotPoint* getter versions instead.
- 2020/05/29 (0.3) - The signature of ImPlotLimits::Contains was changed to take two doubles instead of ImVec2
- 2020/05/16 (0.2) - All plotting functions were reverted to being prefixed with "Plot" to maintain a consistent VerbNoun style. `Plot` was split into `PlotLine`
and `PlotScatter` (however, `PlotLine` can still be used to plot scatter points as `Plot` did before.). `Bar` is not `PlotBars`, to indicate
that multiple bars will be plotted.
- 2020/05/13 (0.2) - `ImMarker` was change to `ImPlotMarker` and `ImAxisFlags` was changed to `ImPlotAxisFlags`.
- 2020/05/11 (0.2) - `ImPlotFlags_Selection` was changed to `ImPlotFlags_BoxSelect`
- 2020/05/11 (0.2) - The namespace ImGui:: was replaced with ImPlot::. As a result, the following additional changes were made:
- Functions that were prefixed or decorated with the word "Plot" have been truncated. E.g., `ImGui::PlotBars` is now just `ImPlot::Bar`.
It should be fairly obvious what was what.
- Some functions have been given names that would have otherwise collided with the ImGui namespace. This has been done to maintain a consistent
style with ImGui. E.g., 'ImGui::PushPlotStyleVar` is now 'ImPlot::PushStyleVar'.
- 2020/05/10 (0.2) - The following function/struct names were changes:
- ImPlotRange -> ImPlotLimits
- GetPlotRange() -> GetPlotLimits()
- SetNextPlotRange -> SetNextPlotLimits
- SetNextPlotRangeX -> SetNextPlotLimitsX
- SetNextPlotRangeY -> SetNextPlotLimitsY
- 2020/05/10 (0.2) - Plot queries are pixel based by default. Query rects that maintain relative plot position have been removed. This was done to support multi-y-axis.
*/
#include "implot.h"
#include "implot_internal.h"
#ifdef _MSC_VER
#define sprintf sprintf_s
#endif
// Global plot context
ImPlotContext* GImPlot = NULL;
//-----------------------------------------------------------------------------
// Struct Implementations
//-----------------------------------------------------------------------------
ImPlotInputMap::ImPlotInputMap() {
PanButton = ImGuiMouseButton_Left;
PanMod = ImGuiKeyModFlags_None;
FitButton = ImGuiMouseButton_Left;
ContextMenuButton = ImGuiMouseButton_Right;
BoxSelectButton = ImGuiMouseButton_Right;
BoxSelectMod = ImGuiKeyModFlags_None;
BoxSelectCancelButton = ImGuiMouseButton_Left;
QueryButton = ImGuiMouseButton_Middle;
QueryMod = ImGuiKeyModFlags_None;
QueryToggleMod = ImGuiKeyModFlags_Ctrl;
HorizontalMod = ImGuiKeyModFlags_Alt;
VerticalMod = ImGuiKeyModFlags_Shift;
}
ImPlotStyle::ImPlotStyle() {
LineWeight = 1;
Marker = ImPlotMarker_None;
MarkerSize = 4;
MarkerWeight = 1;
FillAlpha = 1;
ErrorBarSize = 5;
ErrorBarWeight = 1.5f;
DigitalBitHeight = 8;
DigitalBitGap = 4;
PlotBorderSize = 1;
MinorAlpha = 0.25f;
MajorTickLen = ImVec2(10,10);
MinorTickLen = ImVec2(5,5);
MajorTickSize = ImVec2(1,1);
MinorTickSize = ImVec2(1,1);
MajorGridSize = ImVec2(1,1);
MinorGridSize = ImVec2(1,1);
PlotPadding = ImVec2(8,8);
LabelPadding = ImVec2(5,5);
LegendPadding = ImVec2(10,10);
InfoPadding = ImVec2(10,10);
PlotMinSize = ImVec2(300,225);
ImPlot::StyleColorsAuto(this);
AntiAliasedLines = false;
UseLocalTime = false;
}
namespace ImPlot {
const char* GetStyleColorName(ImPlotCol col) {
static const char* col_names[] = {
"Line",
"Fill",
"MarkerOutline",
"MarkerFill",
"ErrorBar",
"FrameBg",
"PlotBg",
"PlotBorder",
"LegendBg",
"LegendBorder",
"LegendText",
"TitleText",
"InlayText",
"XAxis",
"XAxisGrid",
"YAxis",
"YAxisGrid",
"YAxis2",
"YAxisGrid2",
"YAxis3",
"YAxisGrid3",
"Selection",
"Query",
"Crosshairs"
};
return col_names[col];
}
const char* GetMarkerName(ImPlotMarker marker) {
switch (marker) {
case ImPlotMarker_None: return "None";
case ImPlotMarker_Circle: return "Circle";
case ImPlotMarker_Square: return "Square";
case ImPlotMarker_Diamond: return "Diamond";
case ImPlotMarker_Up: return "Up";
case ImPlotMarker_Down: return "Down";
case ImPlotMarker_Left: return "Left";
case ImPlotMarker_Right: return "Right";
case ImPlotMarker_Cross: return "Cross";
case ImPlotMarker_Plus: return "Plus";
case ImPlotMarker_Asterisk: return "Asterisk";
default: return "";
}
}
ImVec4 GetAutoColor(ImPlotCol idx) {
ImVec4 col(0,0,0,1);
switch(idx) {
case ImPlotCol_Line: return col; // these are plot dependent!
case ImPlotCol_Fill: return col; // these are plot dependent!
case ImPlotCol_MarkerOutline: return col; // these are plot dependent!
case ImPlotCol_MarkerFill: return col; // these are plot dependent!
case ImPlotCol_ErrorBar: return ImGui::GetStyleColorVec4(ImGuiCol_Text);
case ImPlotCol_FrameBg: return ImGui::GetStyleColorVec4(ImGuiCol_FrameBg);
case ImPlotCol_PlotBg: return ImGui::GetStyleColorVec4(ImGuiCol_WindowBg);
case ImPlotCol_PlotBorder: return ImGui::GetStyleColorVec4(ImGuiCol_Border);
case ImPlotCol_LegendBg: return ImGui::GetStyleColorVec4(ImGuiCol_PopupBg);
case ImPlotCol_LegendBorder: return GetStyleColorVec4(ImPlotCol_PlotBorder);
case ImPlotCol_LegendText: return GetStyleColorVec4(ImPlotCol_InlayText);
case ImPlotCol_TitleText: return ImGui::GetStyleColorVec4(ImGuiCol_Text);
case ImPlotCol_InlayText: return ImGui::GetStyleColorVec4(ImGuiCol_Text);
case ImPlotCol_XAxis: return ImGui::GetStyleColorVec4(ImGuiCol_Text);
case ImPlotCol_XAxisGrid: return GetStyleColorVec4(ImPlotCol_XAxis) * ImVec4(1,1,1,0.25f);
case ImPlotCol_YAxis: return ImGui::GetStyleColorVec4(ImGuiCol_Text);
case ImPlotCol_YAxisGrid: return GetStyleColorVec4(ImPlotCol_YAxis) * ImVec4(1,1,1,0.25f);
case ImPlotCol_YAxis2: return ImGui::GetStyleColorVec4(ImGuiCol_Text);
case ImPlotCol_YAxisGrid2: return GetStyleColorVec4(ImPlotCol_YAxis2) * ImVec4(1,1,1,0.25f);
case ImPlotCol_YAxis3: return ImGui::GetStyleColorVec4(ImGuiCol_Text);
case ImPlotCol_YAxisGrid3: return GetStyleColorVec4(ImPlotCol_YAxis3) * ImVec4(1,1,1,0.25f);
case ImPlotCol_Selection: return ImVec4(1,1,0,1);
case ImPlotCol_Query: return ImVec4(0,1,0,1);
case ImPlotCol_Crosshairs: return GetStyleColorVec4(ImPlotCol_PlotBorder);
default: return col;
}
}
struct ImPlotStyleVarInfo {
ImGuiDataType Type;
ImU32 Count;
ImU32 Offset;
void* GetVarPtr(ImPlotStyle* style) const { return (void*)((unsigned char*)style + Offset); }
};
static const ImPlotStyleVarInfo GPlotStyleVarInfo[] =
{
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, LineWeight) }, // ImPlotStyleVar_LineWeight
{ ImGuiDataType_S32, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, Marker) }, // ImPlotStyleVar_Marker
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, MarkerSize) }, // ImPlotStyleVar_MarkerSize
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, MarkerWeight) }, // ImPlotStyleVar_MarkerWeight
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, FillAlpha) }, // ImPlotStyleVar_FillAlpha
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, ErrorBarSize) }, // ImPlotStyleVar_ErrorBarSize
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, ErrorBarWeight) }, // ImPlotStyleVar_ErrorBarWeight
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, DigitalBitHeight) }, // ImPlotStyleVar_DigitalBitHeight
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, DigitalBitGap) }, // ImPlotStyleVar_DigitalBitGap
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, PlotBorderSize) }, // ImPlotStyleVar_PlotBorderSize
{ ImGuiDataType_Float, 1, (ImU32)IM_OFFSETOF(ImPlotStyle, MinorAlpha) }, // ImPlotStyleVar_MinorAlpha
{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImPlotStyle, MajorTickLen) }, // ImPlotStyleVar_MajorTickLen
{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImPlotStyle, MinorTickLen) }, // ImPlotStyleVar_MinorTickLen
{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImPlotStyle, MajorTickSize) }, // ImPlotStyleVar_MajorTickSize
{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImPlotStyle, MinorTickSize) }, // ImPlotStyleVar_MinorTickSize
{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImPlotStyle, MajorGridSize) }, // ImPlotStyleVar_MajorGridSize
{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImPlotStyle, MinorGridSize) }, // ImPlotStyleVar_MinorGridSize
{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImPlotStyle, PlotPadding) }, // ImPlotStyleVar_PlotPadding
{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImPlotStyle, LabelPadding) }, // ImPlotStyleVar_LabelPaddine
{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImPlotStyle, LegendPadding) }, // ImPlotStyleVar_LegendPadding
{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImPlotStyle, InfoPadding) }, // ImPlotStyleVar_InfoPadding
{ ImGuiDataType_Float, 2, (ImU32)IM_OFFSETOF(ImPlotStyle, PlotMinSize) } // ImPlotStyleVar_PlotMinSize
};
static const ImPlotStyleVarInfo* GetPlotStyleVarInfo(ImPlotStyleVar idx) {
IM_ASSERT(idx >= 0 && idx < ImPlotStyleVar_COUNT);
IM_ASSERT(IM_ARRAYSIZE(GPlotStyleVarInfo) == ImPlotStyleVar_COUNT);
return &GPlotStyleVarInfo[idx];
}
//-----------------------------------------------------------------------------
// Generic Helpers
//-----------------------------------------------------------------------------
void AddTextVertical(ImDrawList *DrawList, ImVec2 pos, ImU32 col, const char *text_begin, const char* text_end) {
if (!text_end)
text_end = text_begin + strlen(text_begin);
ImGuiContext& g = *GImGui;
ImFont* font = g.Font;
pos.x = IM_FLOOR(pos.x + font->DisplayOffset.y);
pos.y = IM_FLOOR(pos.y + font->DisplayOffset.x);
const char* s = text_begin;
const int vtx_count = (int)(text_end - s) * 4;
const int idx_count = (int)(text_end - s) * 6;
DrawList->PrimReserve(idx_count, vtx_count);
const float scale = g.FontSize / font->FontSize;
while (s < text_end) {
unsigned int c = (unsigned int)*s;
if (c < 0x80) {
s += 1;
}
else {
s += ImTextCharFromUtf8(&c, s, text_end);
if (c == 0) // Malformed UTF-8?
break;
}
const ImFontGlyph * glyph = font->FindGlyph((ImWchar)c);
if (glyph == NULL)
continue;
DrawList->PrimQuadUV(pos + ImVec2(glyph->Y0, -glyph->X0) * scale, pos + ImVec2(glyph->Y0, -glyph->X1) * scale,
pos + ImVec2(glyph->Y1, -glyph->X1) * scale, pos + ImVec2(glyph->Y1, -glyph->X0) * scale,
ImVec2(glyph->U0, glyph->V0), ImVec2(glyph->U1, glyph->V0),
ImVec2(glyph->U1, glyph->V1), ImVec2(glyph->U0, glyph->V1),
col);
pos.y -= glyph->AdvanceX * scale;
}
}
double NiceNum(double x, bool round) {
double f; /* fractional part of x */
double nf; /* nice, rounded fraction */
int expv = (int)floor(ImLog10(x));
f = x / ImPow(10.0, (double)expv); /* between 1 and 10 */
if (round)
if (f < 1.5)
nf = 1;
else if (f < 3)
nf = 2;
else if (f < 7)
nf = 5;
else
nf = 10;
else if (f <= 1)
nf = 1;
else if (f <= 2)
nf = 2;
else if (f <= 5)
nf = 5;
else
nf = 10;
return nf * ImPow(10.0, expv);
}
//-----------------------------------------------------------------------------
// Context Utils
//-----------------------------------------------------------------------------
void SetImGuiContext(ImGuiContext* ctx) {
ImGui::SetCurrentContext(ctx);
}
ImPlotContext* CreateContext() {
ImPlotContext* ctx = IM_NEW(ImPlotContext)();
Initialize(ctx);
if (GImPlot == NULL)
SetCurrentContext(ctx);
return ctx;
}
void DestroyContext(ImPlotContext* ctx) {
if (ctx == NULL)
ctx = GImPlot;
if (GImPlot == ctx)
SetCurrentContext(NULL);
IM_DELETE(ctx);
}
ImPlotContext* GetCurrentContext() {
return GImPlot;
}
void SetCurrentContext(ImPlotContext* ctx) {
GImPlot = ctx;
}
void Initialize(ImPlotContext* ctx) {
Reset(ctx);
ctx->Colormap = GetColormap(ImPlotColormap_Default, &ctx->ColormapSize);
}
void Reset(ImPlotContext* ctx) {
// end child window if it was made
if (ctx->ChildWindowMade)
ImGui::EndChild();
ctx->ChildWindowMade = false;
// reset the next plot/item data
ctx->NextPlotData = ImPlotNextPlotData();
ctx->NextItemStyle = ImPlotItemStyle();
// reset items count
ctx->VisibleItemCount = 0;
// reset legend items
ctx->LegendIndices.shrink(0);
ctx->LegendLabels.Buf.shrink(0);
// reset ticks/labels
ctx->XTicks.Reset();
for (int i = 0; i < 3; ++i) {
ctx->YTicks[i].Reset();
}
// reset extents/fit
ctx->FitThisFrame = false;
ctx->FitX = false;
ctx->ExtentsX.Min = HUGE_VAL;
ctx->ExtentsX.Max = -HUGE_VAL;
for (int i = 0; i < IMPLOT_Y_AXES; i++) {
ctx->ExtentsY[i].Min = HUGE_VAL;
ctx->ExtentsY[i].Max = -HUGE_VAL;
ctx->FitY[i] = false;
}
// reset digital plot items count
ctx->DigitalPlotItemCnt = 0;
ctx->DigitalPlotOffset = 0;
// nullify plot
ctx->CurrentPlot = NULL;
ctx->CurrentItem = NULL;
}
//-----------------------------------------------------------------------------
// Plot Utils
//-----------------------------------------------------------------------------
ImPlotState* GetPlot(const char* title) {
ImGuiWindow* Window = GImGui->CurrentWindow;
const ImGuiID ID = Window->GetID(title);
return GImPlot->Plots.GetByKey(ID);
}
ImPlotState* GetCurrentPlot() {
return GImPlot->CurrentPlot;
}
void BustPlotCache() {
GImPlot->Plots.Clear();
}
void FitPoint(const ImPlotPoint& p) {
ImPlotContext& gp = *GImPlot;
const int y_axis = gp.CurrentPlot->CurrentYAxis;
ImPlotRange& ex_x = gp.ExtentsX;
ImPlotRange& ex_y = gp.ExtentsY[y_axis];
const bool log_x = ImHasFlag(gp.CurrentPlot->XAxis.Flags, ImPlotAxisFlags_LogScale);
const bool log_y = ImHasFlag(gp.CurrentPlot->YAxis[y_axis].Flags, ImPlotAxisFlags_LogScale);
if (!ImNanOrInf(p.x) && !(log_x && p.x <= 0)) {
ex_x.Min = p.x < ex_x.Min ? p.x : ex_x.Min;
ex_x.Max = p.x > ex_x.Max ? p.x : ex_x.Max;
}
if (!ImNanOrInf(p.y) && !(log_y && p.y <= 0)) {
ex_y.Min = p.y < ex_y.Min ? p.y : ex_y.Min;
ex_y.Max = p.y > ex_y.Max ? p.y : ex_y.Max;
}
}
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
//-----------------------------------------------------------------------------
void UpdateTransformCache() {
ImPlotContext& gp = *GImPlot;
// get pixels for transforms
for (int i = 0; i < IMPLOT_Y_AXES; i++) {
gp.PixelRange[i] = ImRect(ImHasFlag(gp.CurrentPlot->XAxis.Flags, ImPlotAxisFlags_Invert) ? gp.BB_Plot.Max.x : gp.BB_Plot.Min.x,
ImHasFlag(gp.CurrentPlot->YAxis[i].Flags, ImPlotAxisFlags_Invert) ? gp.BB_Plot.Min.y : gp.BB_Plot.Max.y,
ImHasFlag(gp.CurrentPlot->XAxis.Flags, ImPlotAxisFlags_Invert) ? gp.BB_Plot.Min.x : gp.BB_Plot.Max.x,
ImHasFlag(gp.CurrentPlot->YAxis[i].Flags, ImPlotAxisFlags_Invert) ? gp.BB_Plot.Max.y : gp.BB_Plot.Min.y);
gp.My[i] = (gp.PixelRange[i].Max.y - gp.PixelRange[i].Min.y) / gp.CurrentPlot->YAxis[i].Range.Size();
}
gp.LogDenX = ImLog10(gp.CurrentPlot->XAxis.Range.Max / gp.CurrentPlot->XAxis.Range.Min);
for (int i = 0; i < IMPLOT_Y_AXES; i++)
gp.LogDenY[i] = ImLog10(gp.CurrentPlot->YAxis[i].Range.Max / gp.CurrentPlot->YAxis[i].Range.Min);
gp.Mx = (gp.PixelRange[0].Max.x - gp.PixelRange[0].Min.x) / gp.CurrentPlot->XAxis.Range.Size();
}
ImPlotPoint PixelsToPlot(float x, float y, int y_axis_in) {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PixelsToPlot() needs to be called between BeginPlot() and EndPlot()!");
const int y_axis = y_axis_in >= 0 ? y_axis_in : gp.CurrentPlot->CurrentYAxis;
ImPlotPoint plt;
plt.x = (x - gp.PixelRange[y_axis].Min.x) / gp.Mx + gp.CurrentPlot->XAxis.Range.Min;
plt.y = (y - gp.PixelRange[y_axis].Min.y) / gp.My[y_axis] + gp.CurrentPlot->YAxis[y_axis].Range.Min;
if (ImHasFlag(gp.CurrentPlot->XAxis.Flags, ImPlotAxisFlags_LogScale)) {
double t = (plt.x - gp.CurrentPlot->XAxis.Range.Min) / gp.CurrentPlot->XAxis.Range.Size();
plt.x = ImPow(10, t * gp.LogDenX) * gp.CurrentPlot->XAxis.Range.Min;
}
if (ImHasFlag(gp.CurrentPlot->YAxis[y_axis].Flags, ImPlotAxisFlags_LogScale)) {
double t = (plt.y - gp.CurrentPlot->YAxis[y_axis].Range.Min) / gp.CurrentPlot->YAxis[y_axis].Range.Size();
plt.y = ImPow(10, t * gp.LogDenY[y_axis]) * gp.CurrentPlot->YAxis[y_axis].Range.Min;
}
return plt;
}
ImPlotPoint PixelsToPlot(const ImVec2& pix, int y_axis) {
return PixelsToPlot(pix.x, pix.y, y_axis);
}
// This function is convenient but should not be used to process a high volume of points. Use the Transformer structs below instead.
ImVec2 PlotToPixels(double x, double y, int y_axis_in) {
ImPlotContext& gp = *GImPlot;
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotToPixels() needs to be called between BeginPlot() and EndPlot()!");
const int y_axis = y_axis_in >= 0 ? y_axis_in : gp.CurrentPlot->CurrentYAxis;
ImVec2 pix;
if (ImHasFlag(gp.CurrentPlot->XAxis.Flags, ImPlotAxisFlags_LogScale)) {
double t = ImLog10(x / gp.CurrentPlot->XAxis.Range.Min) / gp.LogDenX;
x = ImLerp(gp.CurrentPlot->XAxis.Range.Min, gp.CurrentPlot->XAxis.Range.Max, (float)t);
}
if (ImHasFlag(gp.CurrentPlot->YAxis[y_axis].Flags, ImPlotAxisFlags_LogScale)) {
double t = ImLog10(y / gp.CurrentPlot->YAxis[y_axis].Range.Min) / gp.LogDenY[y_axis];
y = ImLerp(gp.CurrentPlot->YAxis[y_axis].Range.Min, gp.CurrentPlot->YAxis[y_axis].Range.Max, (float)t);
}
pix.x = (float)(gp.PixelRange[y_axis].Min.x + gp.Mx * (x - gp.CurrentPlot->XAxis.Range.Min));
pix.y = (float)(gp.PixelRange[y_axis].Min.y + gp.My[y_axis] * (y - gp.CurrentPlot->YAxis[y_axis].Range.Min));
return pix;
}
// This function is convenient but should not be used to process a high volume of points. Use the Transformer structs below instead.
ImVec2 PlotToPixels(const ImPlotPoint& plt, int y_axis) {
return PlotToPixels(plt.x, plt.y, y_axis);
}
//-----------------------------------------------------------------------------
// Legend Utils
//-----------------------------------------------------------------------------
int GetLegendCount() {
ImPlotContext& gp = *GImPlot;
return gp.LegendIndices.size();
}
const char* GetLegendLabel(int i) {
ImPlotContext& gp = *GImPlot;
ImPlotItem* item = gp.CurrentPlot->Items.GetByIndex(gp.LegendIndices[i]);
IM_ASSERT(item->NameOffset != -1 && item->NameOffset < gp.LegendLabels.Buf.Size);
return gp.LegendLabels.Buf.Data + item->NameOffset;
}
//-----------------------------------------------------------------------------
// Tick Utils
//-----------------------------------------------------------------------------
void LabelTickDefault(ImPlotTick& tick, ImGuiTextBuffer& buffer) {
char temp[32];
if (tick.ShowLabel) {
tick.BufferOffset = buffer.size();
snprintf(temp, 32, "%.10g", tick.PlotPos);
buffer.append(temp, temp + strlen(temp) + 1);
tick.LabelSize = ImGui::CalcTextSize(buffer.Buf.Data + tick.BufferOffset);
}
}
void LabelTickScientific(ImPlotTick& tick, ImGuiTextBuffer& buffer) {
char temp[32];
if (tick.ShowLabel) {
tick.BufferOffset = buffer.size();
snprintf(temp, 32, "%.0E", tick.PlotPos);
buffer.append(temp, temp + strlen(temp) + 1);
tick.LabelSize = ImGui::CalcTextSize(buffer.Buf.Data + tick.BufferOffset);
}
}
void AddTicksDefault(const ImPlotRange& range, int nMajor, int nMinor, ImPlotTickCollection& ticks) {
const double nice_range = NiceNum(range.Size() * 0.99, false);
const double interval = NiceNum(nice_range / (nMajor - 1), true);
const double graphmin = floor(range.Min / interval) * interval;
const double graphmax = ceil(range.Max / interval) * interval;
for (double major = graphmin; major < graphmax + 0.5 * interval; major += interval) {
if (range.Contains(major))
ticks.AddTick(major, true, true, LabelTickDefault);
for (int i = 1; i < nMinor; ++i) {
double minor = major + i * interval / nMinor;
if (range.Contains(minor))
ticks.AddTick(minor, false, true, LabelTickDefault);
}
}
}
void AddTicksLogarithmic(const ImPlotRange& range, int nMajor, ImPlotTickCollection& ticks) {
if (range.Min <= 0 || range.Max <= 0)
return;
double log_min = ImLog10(range.Min);
double log_max = ImLog10(range.Max);
int exp_step = ImMax(1,(int)(log_max - log_min) / nMajor);
int exp_min = (int)log_min;
int exp_max = (int)log_max;
if (exp_step != 1) {
while(exp_step % 3 != 0) exp_step++; // make step size multiple of three
while(exp_min % exp_step != 0) exp_min--; // decrease exp_min until exp_min + N * exp_step will be 0
}
for (int e = exp_min - exp_step; e < (exp_max + exp_step); e += exp_step) {
double major1 = ImPow(10, (double)(e));
double major2 = ImPow(10, (double)(e + 1));
double interval = (major2 - major1) / 9;
if (major1 >= (range.Min - DBL_EPSILON) && major1 <= (range.Max + DBL_EPSILON))
ticks.AddTick(major1, true, true, LabelTickScientific);
for (int j = 0; j < exp_step; ++j) {
major1 = ImPow(10, (double)(e+j));
major2 = ImPow(10, (double)(e+j+1));
interval = (major2 - major1) / 9;
for (int i = 1; i < (9 + (int)(j < (exp_step - 1))); ++i) {
double minor = major1 + i * interval;
if (minor >= (range.Min - DBL_EPSILON) && minor <= (range.Max + DBL_EPSILON))
ticks.AddTick(minor, false, false, LabelTickScientific);
}
}
}
}
void AddTicksCustom(const double* values, const char* const labels[], int n, ImPlotTickCollection& ticks) {
for (int i = 0; i < n; ++i) {
ImPlotTick tick(values[i], false, true);
if (labels != NULL) {
tick.BufferOffset = ticks.Labels.size();
ticks.Labels.append(labels[i], labels[i] + strlen(labels[i]) + 1);
tick.LabelSize = ImGui::CalcTextSize(labels[i]);
}
else {
LabelTickDefault(tick, ticks.Labels);
}
ticks.AddTick(tick);
}
}
//-----------------------------------------------------------------------------
// Time Ticks and Utils
//-----------------------------------------------------------------------------
// this may not be thread safe?
static const double TimeUnitSpans[ImPlotTimeUnit_COUNT] = {
0.000001,
0.001,
1,
60,
3600,
86400,
2629800,
31557600
};
inline ImPlotTimeUnit GetUnitForRange(double range) {
static double cutoffs[ImPlotTimeUnit_COUNT] = {0.001, 1, 60, 3600, 86400, 2629800, 31557600, IMPLOT_MAX_TIME};
for (int i = 0; i < ImPlotTimeUnit_COUNT; ++i) {
if (range <= cutoffs[i])
return (ImPlotTimeUnit)i;
}
return ImPlotTimeUnit_Yr;
}
inline int LowerBoundStep(int max_divs, const int* divs, const int* step, int size) {
if (max_divs < divs[0])
return 0;
for (int i = 1; i < size; ++i) {
if (max_divs < divs[i])
return step[i-1];
}
return step[size-1];
}
inline int GetTimeStep(int max_divs, ImPlotTimeUnit unit) {
if (unit == ImPlotTimeUnit_Ms || unit == ImPlotTimeUnit_Us) {
static const int step[] = {500,250,200,100,50,25,20,10,5,2,1};
static const int divs[] = {2,4,5,10,20,40,50,100,200,500,1000};
return LowerBoundStep(max_divs, divs, step, 11);
}
if (unit == ImPlotTimeUnit_S || unit == ImPlotTimeUnit_Min) {
static const int step[] = {30,15,10,5,1};
static const int divs[] = {2,4,6,12,60};
return LowerBoundStep(max_divs, divs, step, 5);
}
else if (unit == ImPlotTimeUnit_Hr) {
static const int step[] = {12,6,3,2,1};
static const int divs[] = {2,4,8,12,24};
return LowerBoundStep(max_divs, divs, step, 5);
}
else if (unit == ImPlotTimeUnit_Day) {
static const int step[] = {14,7,2,1};
static const int divs[] = {2,4,14,28};
return LowerBoundStep(max_divs, divs, step, 4);
}
else if (unit == ImPlotTimeUnit_Mo) {
static const int step[] = {6,3,2,1};
static const int divs[] = {2,4,6,12};
return LowerBoundStep(max_divs, divs, step, 4);
}
return 0;
}
ImPlotTime MkGmtTime(struct tm *ptm) {
ImPlotTime t;
#ifdef _WIN32
t.S = _mkgmtime(ptm);
#else
t.S = timegm(ptm);
#endif
if (t.S < 0)
t.S = 0;
return t;
}
tm* GetGmtTime(const ImPlotTime& t, tm* ptm)
{
#ifdef _WIN32
if (gmtime_s(ptm, &t.S) == 0)
return ptm;
else
return NULL;
#else
return gmtime_r(&t.S, ptm);
#endif
}
ImPlotTime MkLocTime(struct tm *ptm) {
ImPlotTime t;
t.S = mktime(ptm);
if (t.S < 0)
t.S = 0;
return t;
}
tm* GetLocTime(const ImPlotTime& t, tm* ptm) {
#ifdef _WIN32
if (localtime_s(ptm, &t.S) == 0)
return ptm;
else
return NULL;
#else
return localtime_r(&t.S, ptm);
#endif
}
inline ImPlotTime MkTime(struct tm *ptm) {
if (GetStyle().UseLocalTime)
return MkLocTime(ptm);
else
return MkGmtTime(ptm);
}
inline tm* GetTime(const ImPlotTime& t, tm* ptm) {
if (GetStyle().UseLocalTime)
return GetLocTime(t,ptm);
else
return GetGmtTime(t,ptm);
}
ImPlotTime MakeTime(int year, int month, int day, int hour, int min, int sec, int us) {
tm& Tm = GImPlot->Tm;
int yr = year - 1900;
if (yr < 0)
yr = 0;
sec = sec + us / 1000000;
us = us % 1000000;
Tm.tm_sec = sec;
Tm.tm_min = min;
Tm.tm_hour = hour;
Tm.tm_mday = day;
Tm.tm_mon = month;
Tm.tm_year = yr;
ImPlotTime t = MkTime(&Tm);
t.Us = us;
return t;
}
int GetYear(const ImPlotTime& t) {
tm& Tm = GImPlot->Tm;
GetTime(t, &Tm);
return Tm.tm_year + 1900;
}
ImPlotTime AddTime(const ImPlotTime& t, ImPlotTimeUnit unit, int count) {
tm& Tm = GImPlot->Tm;
ImPlotTime t_out = t;
switch(unit) {
case ImPlotTimeUnit_Us: t_out.Us += count; break;
case ImPlotTimeUnit_Ms: t_out.Us += count * 1000; break;
case ImPlotTimeUnit_S: t_out.S += count; break;
case ImPlotTimeUnit_Min: t_out.S += count * 60; break;
case ImPlotTimeUnit_Hr: t_out.S += count * 3600; break;
case ImPlotTimeUnit_Day: t_out.S += count * 86400; break;
case ImPlotTimeUnit_Mo: for (int i = 0; i < abs(count); ++i) {
GetTime(t_out, &Tm);
if (count > 0)
t_out.S += 86400 * GetDaysInMonth(Tm.tm_year + 1900, Tm.tm_mon);
else if (count < 0)
t_out.S -= 86400 * GetDaysInMonth(Tm.tm_year + 1900 - (Tm.tm_mon == 0 ? 1 : 0), Tm.tm_mon == 0 ? 11 : Tm.tm_mon - 1); // NOT WORKING
}
break;
case ImPlotTimeUnit_Yr: for (int i = 0; i < abs(count); ++i) {
if (count > 0)
t_out.S += 86400 * (365 + (int)IsLeapYear(GetYear(t_out)));
else if (count < 0)
t_out.S -= 86400 * (365 + (int)IsLeapYear(GetYear(t_out) - 1));
// this is incorrect if leap year and we are past Feb 28
}
break;
default: break;
}
t_out.RollOver();
return t_out;
}
ImPlotTime FloorTime(const ImPlotTime& t, ImPlotTimeUnit unit) {
GetTime(t, &GImPlot->Tm);
switch (unit) {
case ImPlotTimeUnit_S: return ImPlotTime(t.S, 0);
case ImPlotTimeUnit_Ms: return ImPlotTime(t.S, (t.Us / 1000) * 1000);
case ImPlotTimeUnit_Us: return t;
case ImPlotTimeUnit_Yr: GImPlot->Tm.tm_mon = 0; // fall-through
case ImPlotTimeUnit_Mo: GImPlot->Tm.tm_mday = 1; // fall-through
case ImPlotTimeUnit_Day: GImPlot->Tm.tm_hour = 0; // fall-through
case ImPlotTimeUnit_Hr: GImPlot->Tm.tm_min = 0; // fall-through
case ImPlotTimeUnit_Min: GImPlot->Tm.tm_sec = 0; break;
default: return t;
}
return MkTime(&GImPlot->Tm);
}
ImPlotTime CeilTime(const ImPlotTime& t, ImPlotTimeUnit unit) {
return AddTime(FloorTime(t, unit), unit, 1);
}
ImPlotTime RoundTime(const ImPlotTime& t, ImPlotTimeUnit unit) {
ImPlotTime t1 = FloorTime(t, unit);
ImPlotTime t2 = AddTime(t1,unit,1);
if (t1.S == t2.S)
return t.Us - t1.Us < t2.Us - t.Us ? t1 : t2;
return t.S - t1.S < t2.S - t.S ? t1 : t2;
}
ImPlotTime CombineDateTime(const ImPlotTime& date_part, const ImPlotTime& tod_part) {
tm& Tm = GImPlot->Tm;
GetTime(date_part, &GImPlot->Tm);
int y = Tm.tm_year;
int m = Tm.tm_mon;
int d = Tm.tm_mday;
GetTime(tod_part, &GImPlot->Tm);
Tm.tm_year = y;
Tm.tm_mon = m;
Tm.tm_mday = d;
ImPlotTime t = MkTime(&Tm);
t.Us = tod_part.Us;
return t;
}
int FormatTime(const ImPlotTime& t, char* buffer, int size, ImPlotTimeFmt fmt) {
tm& Tm = GImPlot->Tm;
GetTime(t, &Tm);
const char* ap = Tm.tm_hour < 12 ? "am" : "pm";
const int us = t.Us % 1000;
const int ms = t.Us / 1000;
const int sec = Tm.tm_sec;
const int min = Tm.tm_min;
const int hr = (Tm.tm_hour == 0 || Tm.tm_hour == 12) ? 12 : Tm.tm_hour % 12;
const int day = Tm.tm_mday;
const int mon = Tm.tm_mon + 1;
const int year = Tm.tm_year + 1900;
const int yr = year % 100;
static const char mnames[12][4] = {"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"};
switch(fmt) {
case ImPlotTimeFmt_Us: return snprintf(buffer, size, ".%03d %03d", ms, us);
case ImPlotTimeFmt_SUs: return snprintf(buffer, size, ":%02d.%03d %03d", sec, ms, us);
case ImPlotTimeFmt_SMs: return snprintf(buffer, size, ":%02d.%03d", sec, ms);
case ImPlotTimeFmt_S: return snprintf(buffer, size, ":%02d", sec);
case ImPlotTimeFmt_HrMinS: return snprintf(buffer, size, "%d:%02d:%02d%s", hr, min, sec, ap);
case ImPlotTimeFmt_HrMin: return snprintf(buffer, size, "%d:%02d%s", hr, min, ap);
case ImPlotTimeFmt_Hr: return snprintf(buffer, size, "%d%s", hr, ap);
case ImPlotTimeFmt_DayMo: return snprintf(buffer, size, "%d/%d", mon, day);
case ImPlotTimeFmt_DayMoHr: return snprintf(buffer, size, "%d/%d %d%s", mon, day, hr, ap);
case ImPlotTimeFmt_DayMoHrMin: return snprintf(buffer, size, "%d/%d %d:%02d%s", mon, day, hr, min, ap);
case ImPlotTimeFmt_DayMoYr: return snprintf(buffer, size, "%d/%d/%02d", mon, day, yr);
case ImPlotTimeFmt_DayMoYrHrMin: return snprintf(buffer, size, "%d/%d/%02d %d:%02d%s", mon, day, yr, hr, min, ap);
case ImPlotTimeFmt_DayMoYrHrMinS: return snprintf(buffer, size, "%d/%d/%02d %d:%02d:%02d%s", mon, day, yr, hr, min, sec, ap);
case ImPlotTimeFmt_DayMoYrHrMinSUs: return snprintf(buffer, size, "%d/%d/%d %d:%02d:%02d.%03d%03d%s", mon, day, year, hr, min, sec, ms, us, ap);
case ImPlotTimeFmt_MoYr: return snprintf(buffer, size, "%s %d", mnames[Tm.tm_mon], year);
case ImPlotTimeFmt_Mo: return snprintf(buffer, size, "%s", mnames[Tm.tm_mon]);
case ImPlotTimeFmt_Yr: return snprintf(buffer, size, "%d", year);
default: return 0;
}
}
void PrintTime(const ImPlotTime& t, ImPlotTimeFmt fmt) {
static char buff[32];
FormatTime(t, buff, 32, fmt);
printf("%s\n",buff);
}
// Returns the nominally largest possible width for a time format
inline float GetTimeLabelWidth(ImPlotTimeFmt fmt) {
switch (fmt) {
case ImPlotTimeFmt_Us: return ImGui::CalcTextSize(".888 888").x; // .428 552
case ImPlotTimeFmt_SUs: return ImGui::CalcTextSize(":88.888 888").x; // :29.428 552
case ImPlotTimeFmt_SMs: return ImGui::CalcTextSize(":88.888").x; // :29.428
case ImPlotTimeFmt_S: return ImGui::CalcTextSize(":88").x; // :29
case ImPlotTimeFmt_HrMinS: return ImGui::CalcTextSize("88:88:88pm").x; // 7:21:29pm
case ImPlotTimeFmt_HrMin: return ImGui::CalcTextSize("88:88pm").x; // 7:21pm
case ImPlotTimeFmt_Hr: return ImGui::CalcTextSize("88pm").x; // 7pm
case ImPlotTimeFmt_DayMo: return ImGui::CalcTextSize("88/88").x; // 10/3
case ImPlotTimeFmt_DayMoHr: return ImGui::CalcTextSize("88/88 88pm").x; // 10/3 7:21pm
case ImPlotTimeFmt_DayMoHrMin: return ImGui::CalcTextSize("88/88 88:88pm").x; // 10/3 7:21pm
case ImPlotTimeFmt_DayMoYr: return ImGui::CalcTextSize("88/88/88").x; // 10/3/1991
case ImPlotTimeFmt_DayMoYrHrMin: return ImGui::CalcTextSize("88/88/88 88:88pm").x; // 10/3/91 7:21pm
case ImPlotTimeFmt_DayMoYrHrMinS: return ImGui::CalcTextSize("88/88/88 88:88:88pm").x; // 10/3/91 7:21:29pm
case ImPlotTimeFmt_DayMoYrHrMinSUs: return ImGui::CalcTextSize("88/88/8888 88:88:88.888888pm").x; // 10/3/1991 7:21:29.123456pm
case ImPlotTimeFmt_MoYr: return ImGui::CalcTextSize("MMM 8888").x; // Oct 1991
case ImPlotTimeFmt_Mo: return ImGui::CalcTextSize("MMM").x; // Oct
case ImPlotTimeFmt_Yr: return ImGui::CalcTextSize("8888").x; // 1991
default: return 0;
}
}
inline void LabelTickTime(ImPlotTick& tick, ImGuiTextBuffer& buffer, const ImPlotTime& t, ImPlotTimeFmt fmt) {
char temp[32];
if (tick.ShowLabel) {
tick.BufferOffset = buffer.size();
FormatTime(t, temp, 32, fmt);
buffer.append(temp, temp + strlen(temp) + 1);
tick.LabelSize = ImGui::CalcTextSize(buffer.Buf.Data + tick.BufferOffset);
}
}
inline bool TimeLabelSame(const char* l1, const char* l2) {
size_t len1 = strlen(l1);
size_t len2 = strlen(l2);
size_t n = len1 < len2 ? len1 : len2;
return strcmp(l1 + len1 - n, l2 + len2 - n) == 0;
}
static const ImPlotTimeFmt TimeFormatLevel0[ImPlotTimeUnit_COUNT] = {
ImPlotTimeFmt_Us,
ImPlotTimeFmt_SMs,
ImPlotTimeFmt_S,
ImPlotTimeFmt_HrMin,
ImPlotTimeFmt_Hr,
ImPlotTimeFmt_DayMo,
ImPlotTimeFmt_Mo,
ImPlotTimeFmt_Yr
};
static const ImPlotTimeFmt TimeFormatLevel1[ImPlotTimeUnit_COUNT] = {
ImPlotTimeFmt_HrMin,
ImPlotTimeFmt_HrMinS,
ImPlotTimeFmt_HrMin,
ImPlotTimeFmt_HrMin,
ImPlotTimeFmt_DayMoYr,
ImPlotTimeFmt_DayMoYr,
ImPlotTimeFmt_Yr,
ImPlotTimeFmt_Yr
};
static const ImPlotTimeFmt TimeFormatLevel1First[ImPlotTimeUnit_COUNT] = {
ImPlotTimeFmt_DayMoYrHrMinS,
ImPlotTimeFmt_DayMoYrHrMinS,
ImPlotTimeFmt_DayMoYrHrMin,
ImPlotTimeFmt_DayMoYrHrMin,
ImPlotTimeFmt_DayMoYr,
ImPlotTimeFmt_DayMoYr,
ImPlotTimeFmt_Yr,
ImPlotTimeFmt_Yr
};
static const ImPlotTimeFmt TimeFormatMouseCursor[ImPlotTimeUnit_COUNT] = {
ImPlotTimeFmt_Us,
ImPlotTimeFmt_SUs,
ImPlotTimeFmt_SMs,
ImPlotTimeFmt_HrMinS,
ImPlotTimeFmt_HrMin,
ImPlotTimeFmt_DayMoHr,
ImPlotTimeFmt_DayMoYr,
ImPlotTimeFmt_MoYr
};
void AddTicksTime(const ImPlotRange& range, float plot_width, ImPlotTickCollection& ticks) {
// get units for level 0 and level 1 labels
const ImPlotTimeUnit unit0 = GetUnitForRange(range.Size() / (plot_width / 100)); // level = 0 (top)
const ImPlotTimeUnit unit1 = unit0 + 1; // level = 1 (bottom)
// get time format specs
const ImPlotTimeFmt fmt0 = TimeFormatLevel0[unit0];
const ImPlotTimeFmt fmt1 = TimeFormatLevel1[unit1];
const ImPlotTimeFmt fmtf = TimeFormatLevel1First[unit1];
// min max times
const ImPlotTime t_min = ImPlotTime::FromDouble(range.Min);
const ImPlotTime t_max = ImPlotTime::FromDouble(range.Max);
// maximum allowable density of labels
const float max_density = 0.5f;
// book keeping
const char* last_major = NULL;
if (unit0 != ImPlotTimeUnit_Yr) {
// pixels per major (level 1) division
const float pix_per_major_div = plot_width / (float)(range.Size() / TimeUnitSpans[unit1]);
// nominal pixels taken up by labels
const float fmt0_width = GetTimeLabelWidth(fmt0);
const float fmt1_width = GetTimeLabelWidth(fmt1);
const float fmtf_width = GetTimeLabelWidth(fmtf);
// the maximum number of minor (level 0) labels that can fit between major (level 1) divisions
const int minor_per_major = (int)(max_density * pix_per_major_div / fmt0_width);
// the minor step size (level 0)
const int step = GetTimeStep(minor_per_major, unit0);
// generate ticks
ImPlotTime t1 = FloorTime(ImPlotTime::FromDouble(range.Min), unit1);
while (t1 < t_max) {
// get next major
const ImPlotTime t2 = AddTime(t1, unit1, 1);
// add major tick
if (t1 >= t_min && t1 <= t_max) {
// minor level 0 tick
ImPlotTick tick_min(t1.ToDouble(),true,true);
tick_min.Level = 0;
LabelTickTime(tick_min,ticks.Labels,t1,fmt0);
ticks.AddTick(tick_min);
// major level 1 tick
ImPlotTick tick_maj(t1.ToDouble(),true,true);
tick_maj.Level = 1;
LabelTickTime(tick_maj,ticks.Labels,t1, last_major == NULL ? fmtf : fmt1);
const char* this_major = ticks.Labels.Buf.Data + tick_maj.BufferOffset;
if (last_major && TimeLabelSame(last_major,this_major))
tick_maj.ShowLabel = false;
last_major = this_major;
ticks.AddTick(tick_maj);
}
// add minor ticks up until next major