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GUI: improve oscilloscope

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This commit is contained in:
tildearrow 2022-04-09 05:02:24 -05:00
parent 785ac8d1a7
commit 11cdc3924d
5 changed files with 119 additions and 9 deletions
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90
src/gui/osc.cpp
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@ -18,6 +18,8 @@
*/
#include "gui.h"
#include "imgui_internal.h"
#include <imgui.h>
#include <math.h>
void FurnaceGUI::readOsc() {
@ -71,16 +73,88 @@ void FurnaceGUI::drawOsc() {
}
if (!oscOpen) return;
ImGui::SetNextWindowSizeConstraints(ImVec2(64.0f*dpiScale,32.0f*dpiScale),ImVec2(scrW*dpiScale,scrH*dpiScale));
ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding,ImVec2(0,0));
/*ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding,ImVec2(0,0));
ImGui::PushStyleVar(ImGuiStyleVar_ItemSpacing,ImVec2(0,0));
ImGui::PushStyleVar(ImGuiStyleVar_ItemInnerSpacing,ImVec2(0,0));
ImGui::PushStyleVar(ImGuiStyleVar_ItemInnerSpacing,ImVec2(0,0));*/
if (ImGui::Begin("Oscilloscope",&oscOpen)) {
//ImGui::SetCursorPos(ImVec2(0,0));
ImGui::BeginDisabled();
ImGui::PlotLines("##SingleOsc",oscValues,512,0,NULL,-1.0f,1.0f,ImGui::GetContentRegionAvail());
ImGui::EndDisabled();
if (oscZoomSlider) {
if (ImGui::VSliderFloat("##OscZoom",ImVec2(20.0f*dpiScale,ImGui::GetContentRegionAvail().y),&oscZoom,0.5,2.0)) {
if (oscZoom<0.5) oscZoom=0.5;
if (oscZoom>2.0) oscZoom=2.0;
}
ImGui::SameLine();
}
ImDrawList* dl=ImGui::GetWindowDrawList();
ImGuiWindow* window=ImGui::GetCurrentWindow();
ImVec2 waveform[512];
ImVec2 size=ImGui::GetContentRegionAvail();
ImVec2 minArea=window->DC.CursorPos;
ImVec2 maxArea=ImVec2(
minArea.x+size.x,
minArea.y+size.y
);
ImRect rect=ImRect(minArea,maxArea);
ImGuiStyle& style=ImGui::GetStyle();
ImU32 color=ImGui::GetColorU32(isClipping?uiColors[GUI_COLOR_OSC_WAVE_PEAK]:uiColors[GUI_COLOR_OSC_WAVE]);
ImU32 borderColor=ImGui::GetColorU32(uiColors[GUI_COLOR_OSC_BORDER]);
ImGui::ItemSize(size,style.FramePadding.y);
if (ImGui::ItemAdd(rect,ImGui::GetID("wsDisplay"))) {
// https://github.com/ocornut/imgui/issues/3710
// TODO: improve
const int v0 = dl->VtxBuffer.Size;
dl->AddRectFilled(rect.Min,rect.Max,0xffffffff,8.0f*dpiScale);
const int v1 = dl->VtxBuffer.Size;
for (int i=v0; i<v1; i++) {
ImDrawVert* v=&dl->VtxBuffer.Data[i];
ImVec4 col0=uiColors[GUI_COLOR_OSC_BG1];
ImVec4 col1=uiColors[GUI_COLOR_OSC_BG3];
ImVec4 col2=uiColors[GUI_COLOR_OSC_BG2];
ImVec4 col3=uiColors[GUI_COLOR_OSC_BG4];
float shadeX=(v->pos.x-rect.Min.x)/(rect.Max.x-rect.Min.x);
float shadeY=(v->pos.y-rect.Min.y)/(rect.Max.y-rect.Min.y);
if (shadeX<0.0f) shadeX=0.0f;
if (shadeX>1.0f) shadeX=1.0f;
if (shadeY<0.0f) shadeY=0.0f;
if (shadeY>1.0f) shadeY=1.0f;
col0.x+=(col2.x-col0.x)*shadeX;
col0.y+=(col2.y-col0.y)*shadeX;
col0.z+=(col2.z-col0.z)*shadeX;
col0.w+=(col2.w-col0.w)*shadeX;
col1.x+=(col3.x-col1.x)*shadeX;
col1.y+=(col3.y-col1.y)*shadeX;
col1.z+=(col3.z-col1.z)*shadeX;
col1.w+=(col3.w-col1.w)*shadeX;
col0.x+=(col1.x-col0.x)*shadeY;
col0.y+=(col1.y-col0.y)*shadeY;
col0.z+=(col1.z-col0.z)*shadeY;
col0.w+=(col1.w-col0.w)*shadeY;
v->col=ImGui::ColorConvertFloat4ToU32(col0);
}
for (size_t i=0; i<512; i++) {
float x=(float)i/512.0f;
float y=oscValues[i]*oscZoom;
if (y<-0.5f) y=-0.5f;
if (y>0.5f) y=0.5f;
waveform[i]=ImLerp(rect.Min,rect.Max,ImVec2(x,0.5f-y));
}
dl->AddPolyline(waveform,512,color,ImDrawFlags_None,dpiScale);
dl->AddRect(rect.Min,rect.Max,borderColor,8.0f*dpiScale,0,dpiScale);
}
if (ImGui::IsItemClicked(ImGuiMouseButton_Right)) {
oscZoomSlider=!oscZoomSlider;
}
}
ImGui::PopStyleVar(3);
//ImGui::PopStyleVar(3);
if (ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows)) curWindow=GUI_WINDOW_OSCILLOSCOPE;
ImGui::End();
}
}