78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
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#pragma once
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#include <lvk/LVK.h>
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#include <deque>
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#include <vector>
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class LinearGraph
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{
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public:
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explicit LinearGraph(const char* name, size_t maxGraphPoints = 256)
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: name_(name)
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, maxPoints_(maxGraphPoints)
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{
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}
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void addPoint(float value)
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{
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graph_.push_back(value);
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if (graph_.size() > maxPoints_)
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graph_.erase(graph_.begin());
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}
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void renderGraph(uint32_t x, uint32_t y, uint32_t width, uint32_t height, const glm::vec4& color = vec4(1.0)) const
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{
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LVK_PROFILER_FUNCTION();
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float minVal = std::numeric_limits<float>::max();
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float maxVal = std::numeric_limits<float>::min();
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for (float f : graph_) {
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if (f < minVal)
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minVal = f;
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if (f > maxVal)
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maxVal = f;
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}
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const float range = maxVal - minVal;
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float valX = 0.0;
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std::vector<float> dataX_;
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std::vector<float> dataY_;
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dataX_.reserve(graph_.size());
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dataY_.reserve(graph_.size());
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for (float f : graph_) {
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const float valY = (f - minVal) / range;
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valX += 1.0f / maxPoints_;
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dataX_.push_back(valX);
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dataY_.push_back(valY);
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}
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ImGui::SetNextWindowPos(ImVec2(x, y));
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ImGui::SetNextWindowSize(ImVec2(width, height));
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ImGui::Begin(
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name_, nullptr,
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ImGuiWindowFlags_NoDecoration | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoSavedSettings |
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ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoBackground | ImGuiWindowFlags_NoInputs);
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if (ImPlot::BeginPlot(name_, ImVec2(width, height), ImPlotFlags_CanvasOnly | ImPlotFlags_NoFrame | ImPlotFlags_NoInputs)) {
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ImPlot::SetupAxes(nullptr, nullptr, ImPlotAxisFlags_NoDecorations, ImPlotAxisFlags_NoDecorations);
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ImPlot::PushStyleColor(ImPlotCol_Line, ImVec4(color.r, color.g, color.b, color.a));
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ImPlot::PushStyleColor(ImPlotCol_PlotBg, ImVec4(0, 0, 0, 0));
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ImPlot::PlotLine("#line", dataX_.data(), dataY_.data(), (int)graph_.size(), ImPlotLineFlags_None);
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ImPlot::PopStyleColor(2);
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ImPlot::EndPlot();
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}
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ImGui::End();
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}
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private:
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const char* name_ = nullptr;
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const size_t maxPoints_;
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std::deque<float> graph_;
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};
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