ImGui::PlotTwoLines() extension, PerformanceInfo improvements
This commit is contained in:
Vladyslav Baranovskyi
142
openVulkanoCpp/Scene/UI/ImGuiExtensions/ImGuiPlotTwoLines.cpp
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142
openVulkanoCpp/Scene/UI/ImGuiExtensions/ImGuiPlotTwoLines.cpp
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/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#include "ImGuiPlotTwoLines.hpp"
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#include <imgui.h>
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#include <imgui_internal.h>
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namespace ImGui
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{
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void PlotTwoLines(const char* label,
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float (*getter1)(void* data, int idx), void* data1, const char *tooltipPrefix1,
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float (*getter2)(void* data, int idx), void* data2, const char *tooltipPrefix2,
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int values_count, float scale_min, float scale_max, ImVec2 graph_size)
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{
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ImGuiContext& g = *ImGui::GetCurrentContext();
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ImGuiWindow* window = ImGui::GetCurrentWindow();
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if (window->SkipItems)
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return;
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const ImGuiStyle& style = g.Style;
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ImVec2 label_size = ImGui::CalcTextSize(label, NULL, true);
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if (graph_size.x == 0.0f)
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graph_size.x = ImGui::CalcItemWidth();
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if (graph_size.y == 0.0f)
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graph_size.y = label_size.y + (style.FramePadding.y * 2);
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ImRect frame_bb(window->DC.CursorPos, ImVec2(window->DC.CursorPos.x + graph_size.x, window->DC.CursorPos.y + graph_size.y));
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ImRect inner_bb(ImVec2(frame_bb.Min.x + style.FramePadding.x, frame_bb.Min.y + style.FramePadding.y), ImVec2(frame_bb.Max.x - style.FramePadding.x, frame_bb.Max.y - style.FramePadding.y));
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ImRect total_bb(frame_bb.Min, ImVec2(frame_bb.Max.x + (label_size.x > 0.0f ? (style.ItemInnerSpacing.x + label_size.x) : 0.0f), frame_bb.Max.y));
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ImGui::ItemSize(total_bb, style.FramePadding.y);
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if (!ImGui::ItemAdd(total_bb, 0))
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return;
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// Determine scale from inputs if not specified
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if (scale_min == FLT_MAX || scale_max == FLT_MAX)
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{
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float v1_min = FLT_MAX, v1_max = -FLT_MAX;
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for (int i = 0; i < values_count; i++)
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{
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float v = getter1(data1, i);
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if (v != v) // Ignore NaN values
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continue;
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v1_min = ImMin(v1_min, v);
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v1_max = ImMax(v1_max, v);
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}
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float v2_min = FLT_MAX, v2_max = -FLT_MAX;
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for (int i = 0; i < values_count; i++)
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{
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float v = getter2(data2, i);
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if (v != v) // Ignore NaN values
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continue;
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v2_min = ImMin(v2_min, v);
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v2_max = ImMax(v2_max, v);
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}
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if (scale_min == FLT_MAX) scale_min = ImMin(v1_min, v2_min);
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if (scale_max == FLT_MAX) scale_max = ImMax(v1_max, v2_max);
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}
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ImGui::RenderFrame(frame_bb.Min, frame_bb.Max, ImGui::GetColorU32(ImGuiCol_FrameBg), true, style.FrameRounding);
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int res_w = ImMin((int)graph_size.x, values_count); // Number of samples
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if (res_w <= 0)
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return;
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// Tooltip on hover
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int v_hovered = -1;
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if (ImGui::IsItemHovered())
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{
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const float t = ImClamp((g.IO.MousePos.x - inner_bb.Min.x) / (inner_bb.Max.x - inner_bb.Min.x), 0.0f, 0.9999f);
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const int v_idx = (int)(t * values_count);
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IM_ASSERT(v_idx >= 0 && v_idx < values_count);
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const float v0 = getter1(data1, v_idx);
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const float v1 = getter2(data2, v_idx);
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ImGui::SetTooltip("%d: (%s: %8.4g, %s: %8.4g)", v_idx, tooltipPrefix1, v0, tooltipPrefix2, v1);
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v_hovered = v_idx;
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}
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const float t_step = 1.0f / res_w;
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ImDrawList* draw_list = ImGui::GetWindowDrawList();
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draw_list->PushClipRect(inner_bb.Min, inner_bb.Max, true);
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ImColor col1 = ImColor(255, 100, 100);
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ImColor col2 = ImColor(100, 255, 100);
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// Plot first line
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for (int n = 0; n < res_w; n++)
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{
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const float t0 = t_step * (n + 0);
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const float t1 = t_step * (n + 1);
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const int v_idx0 = (int)(t0 * values_count);
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int v_idx1 = (int)(t1 * values_count);
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if(v_idx1 >= values_count)
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v_idx1 = values_count - 1;
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IM_ASSERT(v_idx0 >= 0 && v_idx0 < values_count);
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IM_ASSERT(v_idx1 >= 0 && v_idx1 < values_count);
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const float v0 = getter1(data1, v_idx0);
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const float v1 = getter1(data1, v_idx1);
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const float x0 = ImLerp(inner_bb.Min.x, inner_bb.Max.x, t0);
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const float x1 = ImLerp(inner_bb.Min.x, inner_bb.Max.x, t1);
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const float y0 = ImLerp(inner_bb.Max.y, inner_bb.Min.y, (v0 - scale_min) / (scale_max - scale_min));
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const float y1 = ImLerp(inner_bb.Max.y, inner_bb.Min.y, (v1 - scale_min) / (scale_max - scale_min));
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draw_list->AddLine(ImVec2(x0, y0), ImVec2(x1, y1), col1);
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}
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// Plot second line
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for (int n = 0; n < res_w; n++)
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{
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const float t0 = t_step * (n + 0);
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const float t1 = t_step * (n + 1);
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const int v_idx0 = (int)(t0 * values_count);
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int v_idx1 = (int)(t1 * values_count);
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if(v_idx1 >= values_count)
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v_idx1 = values_count - 1;
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IM_ASSERT(v_idx0 >= 0 && v_idx0 < values_count);
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IM_ASSERT(v_idx1 >= 0 && v_idx1 < values_count);
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const float v0 = getter2(data2, v_idx0);
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const float v1 = getter2(data2, v_idx1);
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const float x0 = ImLerp(inner_bb.Min.x, inner_bb.Max.x, t0);
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const float x1 = ImLerp(inner_bb.Min.x, inner_bb.Max.x, t1);
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const float y0 = ImLerp(inner_bb.Max.y, inner_bb.Min.y, (v0 - scale_min) / (scale_max - scale_min));
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const float y1 = ImLerp(inner_bb.Max.y, inner_bb.Min.y, (v1 - scale_min) / (scale_max - scale_min));
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draw_list->AddLine(ImVec2(x0, y0), ImVec2(x1, y1), col2);
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}
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draw_list->PopClipRect();
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if (label_size.x > 0.0f)
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ImGui::RenderText(ImVec2(frame_bb.Max.x + style.ItemInnerSpacing.x, inner_bb.Min.y), label);
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}
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}
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