gwm17/implot
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Cleanup and pixel density optimization

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ozlb 2020-05-04 09:26:52 +02:00 committed by GitHub
parent 2338c9b4c9
commit 33ffd8e5c6
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3 changed files with 17 additions and 153 deletions
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161
implot.cpp
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@ -1766,6 +1766,12 @@ void Plot(const char* label_id, ImVec2 (*getter)(void* data, int idx), void* dat
p1 = gp.ToPixels(getter(data, i1));
p2 = gp.ToPixels(getter(data, i2));
i1 = i2;
while (((s+1) < segments) && (round(p2.x) == round(p1.x))) {
const int i2 = (i1 + 1) % count;
p2 = ImMax(p2, gp.ToPixels(getter(data, i2)));
i1 = i2;
s++;
}
if (!cull || gp.BB_Grid.Contains(p1) || gp.BB_Grid.Contains(p2))
DrawList.AddLine(p1, p2, col_line, line_weight);
}
@ -1781,6 +1787,13 @@ void Plot(const char* label_id, ImVec2 (*getter)(void* data, int idx), void* dat
p1 = gp.ToPixels(getter(data, i1));
p2 = gp.ToPixels(getter(data, i2));
i1 = i2;
while (((s+1) < segments) && (round(p2.x) == round(p1.x))) {
segments_culled++;
const int i2 = (i1 + 1) % count;
p2 = ImMax(p2, gp.ToPixels(getter(data, i2)));
i1 = i2;
s++;
}
if (!cull || gp.BB_Grid.Contains(p1) || gp.BB_Grid.Contains(p2)) {
float dx = p2.x - p1.x;
float dy = p2.y - p1.y;
@ -1857,154 +1870,6 @@ void Plot(const char* label_id, ImVec2 (*getter)(void* data, int idx), void* dat
ImGui::PopClipRect();
}
void PlotP(const char* label_id, const float* xs, const float* ys, int count, int offset) {
IM_ASSERT_USER_ERROR(gp.CurrentPlot != NULL, "PlotP() Needs to be called between BeginPlot() and EndPlot()!");
ImPlotItem* item = gp.RegisterItem(label_id);
if (!item->Show)
return;
ImDrawList &DrawList = *ImGui::GetWindowDrawList();
const bool rend_line = gp.Style.Colors[ImPlotCol_Line].w != 0 && gp.Style.LineWeight > 0;
const bool rend_mk_line = gp.Style.Colors[ImPlotCol_MarkerOutline].w != 0 && gp.Style.MarkerWeight > 0;
const bool rend_mk_fill = gp.Style.Colors[ImPlotCol_MarkerFill].w != 0;
ImU32 col_line = gp.Style.Colors[ImPlotCol_Line].w == -1 ? GetColorU32(item->Color) : GetColorU32(gp.Style.Colors[ImPlotCol_Line]);
ImU32 col_mk_line = gp.Style.Colors[ImPlotCol_MarkerOutline].w == -1 ? col_line : GetColorU32(gp.Style.Colors[ImPlotCol_MarkerOutline]);
ImU32 col_mk_fill = gp.Style.Colors[ImPlotCol_MarkerFill].w == -1 ? col_line : GetColorU32(gp.Style.Colors[ImPlotCol_MarkerFill]);
if (gp.Style.Colors[ImPlotCol_Line].w != -1)
item->Color = gp.Style.Colors[ImPlotCol_Line];
// find data extents
if (gp.FitThisFrame) {
for (int i = 0; i < count; ++i) {
ImVec2 p = {xs[i], ys[i]};
gp.FitPoint(p);
}
}
ImGui::PushClipRect(gp.BB_Grid.Min, gp.BB_Grid.Max, true);
bool cull = HasFlag(gp.CurrentPlot->Flags, ImPlotFlags_CullData);
const float line_weight = item->Highlight ? gp.Style.LineWeight * 2 : gp.Style.LineWeight;
// render line segments
if (count > 1 && rend_line) {
const int segments = count - 1;
int i1 = offset;
ImVec2 p1, p2;
if (HasFlag(gp.CurrentPlot->Flags, ImPlotFlags_AntiAliased)) {
for (int s = 0; s < segments; ++s) {
const int i2 = (i1 + 1) % count;
p1 = gp.ToPixels({xs[i1], ys[i1]});
p2 = gp.ToPixels({xs[i2], ys[i2]});
i1 = i2;
while (((s+1) < segments) && (round(p2.x) == round(p1.x))) {
const int i2 = (i1 + 1) % count;
p2 = ImMax(p2, gp.ToPixels({xs[i2], ys[i2]}));
i1 = i2;
s++;
}
if (!cull || gp.BB_Grid.Contains(p1) || gp.BB_Grid.Contains(p2))
DrawList.AddLine(p1, p2, col_line, line_weight);
}
}
else {
const int idx_count = segments * 6;
const int vtx_count = segments * 4;
const ImVec2 uv = DrawList._Data->TexUvWhitePixel;
DrawList.PrimReserve(idx_count, vtx_count);
int segments_culled = 0;
for (int s = 0; s < segments; ++s) {
const int i2 = (i1 + 1) % count;
p1 = gp.ToPixels({xs[i1], ys[i1]});
p2 = gp.ToPixels({xs[i2], ys[i2]});
i1 = i2;
while (((s+1) < segments) && (round(p2.x) == round(p1.x))) {
segments_culled++;
const int i2 = (i1 + 1) % count;
p2 = ImMax(p2, gp.ToPixels({xs[i2], ys[i2]}));
i1 = i2;
s++;
}
if (!cull || gp.BB_Grid.Contains(p1) || gp.BB_Grid.Contains(p2)) {
float dx = p2.x - p1.x;
float dy = p2.y - p1.y;
IM_NORMALIZE2F_OVER_ZERO(dx, dy);
dx *= (line_weight * 0.5f);
dy *= (line_weight * 0.5f);
DrawList._VtxWritePtr[0].pos.x = p1.x + dy;
DrawList._VtxWritePtr[0].pos.y = p1.y - dx;
DrawList._VtxWritePtr[0].uv = uv;
DrawList._VtxWritePtr[0].col = col_line;
DrawList._VtxWritePtr[1].pos.x = p2.x + dy;
DrawList._VtxWritePtr[1].pos.y = p2.y - dx;
DrawList._VtxWritePtr[1].uv = uv;
DrawList._VtxWritePtr[1].col = col_line;
DrawList._VtxWritePtr[2].pos.x = p2.x - dy;
DrawList._VtxWritePtr[2].pos.y = p2.y + dx;
DrawList._VtxWritePtr[2].uv = uv;
DrawList._VtxWritePtr[2].col = col_line;
DrawList._VtxWritePtr[3].pos.x = p1.x - dy;
DrawList._VtxWritePtr[3].pos.y = p1.y + dx;
DrawList._VtxWritePtr[3].uv = uv;
DrawList._VtxWritePtr[3].col = col_line;
DrawList._VtxWritePtr += 4;
DrawList._IdxWritePtr[0] = (ImDrawIdx)(DrawList._VtxCurrentIdx);
DrawList._IdxWritePtr[1] = (ImDrawIdx)(DrawList._VtxCurrentIdx + 1);
DrawList._IdxWritePtr[2] = (ImDrawIdx)(DrawList._VtxCurrentIdx + 2);
DrawList._IdxWritePtr[3] = (ImDrawIdx)(DrawList._VtxCurrentIdx);
DrawList._IdxWritePtr[4] = (ImDrawIdx)(DrawList._VtxCurrentIdx + 2);
DrawList._IdxWritePtr[5] = (ImDrawIdx)(DrawList._VtxCurrentIdx + 3);
DrawList._IdxWritePtr += 6;
DrawList._VtxCurrentIdx += 4;
}
else {
segments_culled++;
}
}
if (segments_culled > 0)
DrawList.PrimUnreserve(segments_culled * 6, segments_culled * 4);
}
}
// render markers
if (gp.Style.Marker != ImMarker_None) {
int idx = offset;
for (int i = 0; i < count; ++i) {
ImVec2 c;
c = gp.ToPixels({xs[idx], ys[idx]});
idx = (idx + 1) % count;
if (!cull || gp.BB_Grid.Contains(c)) {
// TODO: Optimize the loop and if statements, this is atrocious
if (HasFlag(gp.Style.Marker, ImMarker_Circle))
MakerCircle(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Square))
MarkerSquare(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Diamond))
MarkerDiamond(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Up))
MarkerUp(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Down))
MarkerDown(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Left))
MarkerLeft(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Right))
MarkerRight(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Cross))
MarkerCross(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Plus))
MarkerPlus(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
if (HasFlag(gp.Style.Marker, ImMarker_Asterisk))
MarkerAsterisk(DrawList, c, gp.Style.MarkerSize, rend_mk_line, col_mk_line, rend_mk_fill, col_mk_fill, gp.Style.MarkerWeight);
}
}
}
ImGui::PopClipRect();
}
////////////////////////////////////////////////////////////////
void PlotDigital(const char* label_id, const float* xs, const float* ys, int count, int offset, int stride) {

7
implot.h
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@ -159,10 +159,6 @@ void EndPlot();
void Plot(const char* label_id, const float* values, int count, int offset = 0, int stride = sizeof(float));
void Plot(const char* label_id, const float* xs, const float* ys, int count, int offset = 0, int stride = sizeof(float));
void Plot(const char* label_id, ImVec2 (*getter)(void* data, int idx), void* data, int count, int offset = 0);
void PlotP(const char* label_id, const float* xs, const float* ys, int count, int offset = 0);
// Plots digital channels.
void PlotDigital(const char* label_id, const float* xs, const float* ys, int count, int offset = 0, int stride = sizeof(float) + sizeof(bool));
void PlotDigital(const char* label_id, ImVec2 (*getter)(void* data, int idx), void* data, int count, int offset = 0);
// Plots vertical bars.
void PlotBar(const char* label_id, const float* values, int count, float width = 0.67f, float shift = 0, int offset = 0, int stride = sizeof(float));
void PlotBar(const char* label_id, const float* xs, const float* ys, int count, float width, int offset = 0, int stride = sizeof(float));
@ -177,6 +173,9 @@ void PlotErrorBars(const char* label_id, const float* xs, const float* ys, const
void PlotErrorBars(const char* label_id, ImVec4 (*getter)(void* data, int idx), void* data, int count, int offset = 0);
// Plots a text label at point x,y.
void PlotLabel(const char* text, float x, float y, bool vertical = false, const ImVec2& pixel_offset = ImVec2(0,0));
// Plots digital channels.
void PlotDigital(const char* label_id, const float* xs, const float* ys, int count, int offset = 0, int stride = sizeof(float) + sizeof(bool));
void PlotDigital(const char* label_id, ImVec2 (*getter)(void* data, int idx), void* data, int count, int offset = 0);
//-----------------------------------------------------------------------------
// Plot Queries

2
implot_demo.cpp
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@ -687,7 +687,7 @@ void ShowImPlotDemoWindow(bool* p_open) {
for (int i = 0; i < 100; ++i) {
sprintf(buff, "item_%d",i);
ImGui::PushPlotColor(ImPlotCol_Line, items[i].Col);
ImGui::PlotP(buff, items[i].Xs, items[i].Ys, 1000, 0);
ImGui::Plot(buff, items[i].Xs, items[i].Ys, 1000, 0, 2 * sizeof(float));
ImGui::PopPlotColor();
}
ImGui::EndPlot();