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72 lines
2.8 KiB
C++
72 lines
2.8 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#ifdef IMGUI_ENABLED
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#include "LYImGuiUtils/ImGuiDrawHelpers.h"
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#include "ImGuiColorDefines.h"
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namespace ImGui
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{
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namespace LYImGuiUtils
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{
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void Draw2DExpCurve([[maybe_unused]] const char* name, const char* id, const ImVec2& size, const float exp, const float val /*= -1.0f*/)
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{
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// Function for exponential curve
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auto expCurveFunc = [](float val, float exp) -> float
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{
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return powf(fabs(val), exp) * AZ::GetSign(val);
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};
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const float curveFidelity = 2.0f;
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ImVec2 graphSize(size.x - 3.0f, size.y - 3.0f);
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ImGui::BeginChild(id, size, true);
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ImVec2 lastPoint(0.0f, 0.0f);
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for (float xVal = curveFidelity; xVal <= (graphSize.x + curveFidelity); xVal += curveFidelity)
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{
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ImVec2 nextPoint(xVal, graphSize.y - (expCurveFunc(xVal / graphSize.x, exp)*graphSize.y));
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ImGui::GetWindowDrawList()->AddLine(ImVec2(ImGui::GetWindowPos().x + lastPoint.x, ImGui::GetWindowPos().y + lastPoint.y),
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ImVec2(ImGui::GetWindowPos().x + nextPoint.x, ImGui::GetWindowPos().y + nextPoint.y),
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ImGui::ColorConvertFloat4ToU32(ImGui_Col_Salmon), 1.0f);
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lastPoint = nextPoint;
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}
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ImGui::GetWindowDrawList()->AddCircleFilled(ImVec2(ImGui::GetWindowPos().x + (graphSize.x * fabs(val)), ImGui::GetWindowPos().y + graphSize.y - (graphSize.y * expCurveFunc(val, exp))),
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3.0f, ImGui::ColorConvertFloat4ToU32(ImGui_Col_Salmon), 20);
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ImGui::EndChild(); // Input Curve Graph Container
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}
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void DrawLYCVarCheckbox(const char* cVar, const char* title, ICVar* cvar)
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{
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if (cvar)
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{
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// Find boolean CVAR state
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const bool cVarState = (cvar->GetIVal() != 0);
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bool cVarCheckboxValue = cVarState;
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// Create label string
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const AZStd::string& labelText = AZStd::string::format("%s %s (Click Checkbox to Toggle)", title, cVarCheckboxValue ? "On" : "Off");
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ImGui::Checkbox(labelText.c_str(), &cVarCheckboxValue);
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if (cVarCheckboxValue != cVarState)
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{
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cvar->Set(cVarCheckboxValue);
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}
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if (ImGui::IsItemHovered())
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{
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ImGui::BeginTooltip();
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ImGui::TextColored(ImGui_Col_Salmon, "'%s' = %d", cVar, cvar->GetIVal());
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ImGui::EndTooltip();
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}
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}
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}
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}
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}
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#endif // #ifdef IMGUI_ENABLED
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