alexpete
99 lines
3.5 KiB
C++
99 lines
3.5 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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#pragma once
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#ifdef IMGUI_ENABLED
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#include <AzCore/std/containers/deque.h>
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#include "imgui/imgui.h"
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#include <ISystem.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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/**
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* A small class to help manage values for an ImGui Histogram ( ImGui doesn't want to manage the values itself ).
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* Nothing crazy, just helps reduce boiler plate if you are ImGui::PlotHistogram()'ing
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*/
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class HistogramContainer
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{
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public:
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HistogramContainer() = default;
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~HistogramContainer() = default;
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// An Enumeration of different ViewTypes for this histogram
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enum class ViewType : AZ::u8
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{
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FIRST = 0,
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Histogram = FIRST,
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Lines,
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COUNT
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};
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// Static Type to String function
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static const char* ViewTypeToString(ViewType viewType);
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// Do all of the set up via Init
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void Init(const char* histogramName, int maxValueCountSize, ViewType viewType, bool displayOverlays, float minScale, float maxScale
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, bool autoExpandScale, bool startCollapsed = false, bool drawMostRecentValue = true);
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// How many values are in the container currently
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int GetSize() { return m_values.size(); }
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// What is the max size of the container
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int GetMaxSize() { return m_maxSize; }
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// Set the Max Size and clear the container
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void SetMaxSize(int size) { m_values.clear(); m_maxSize = size; }
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// Push a value to this histogram container
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void PushValue(float val);
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// Get the last value pushed
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float GetLastValue() { return GetValue(m_values.size() - 1); }
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// Get a Values at a particular index
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float GetValue(int index) { return index < m_values.size() ? m_values.at(index) : 0.0f; }
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// Draw this histogram with ImGui
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void Draw(float histogramWidth, float histogramHeight);
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private:
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AZStd::string m_histogramName;
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AZStd::deque<float> m_values;
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int m_maxSize = 60;
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ViewType m_viewType = ViewType::Histogram;
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float m_minScale;
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float m_maxScale;
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bool m_dispalyOverlays;
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bool m_autoExpandScale;
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bool m_collapsed;
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bool m_drawMostRecentValueText;
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};
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// Getter function lambda. Can be used directly with ImGui if the user would like to skip our cool Draw function and just use the class as a cache
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static auto s_histogramContainerGetter = [](void* histContainerPtr, int idx)
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{
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ImGui::LYImGuiUtils::HistogramContainer* histContainer = static_cast<ImGui::LYImGuiUtils::HistogramContainer*>(histContainerPtr);
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if (histContainer != nullptr)
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{
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return histContainer->GetValue(idx);
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}
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return 0.0f;
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};
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}
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}
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#endif // #ifdef IMGUI_ENABLED
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