bdf956ed99
2、LayerTreeLayerNode持有MapLayer图层引用，为右键菜单做准备； 3、改名：imageviewer → mapcavas，mapcavas持有MapLayer图层引用，为刷新图像做准备；
30 lines
697 B
C++
30 lines
697 B
C++
#pragma once
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#include <QImage>
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#include <vector>
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class RasterDataProvider;
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class RasterRenderer
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{
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public:
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struct Params {
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double rWave = 665.0;
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double gWave = 560.0;
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double bWave = 490.0;
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double minValue = 0.0;
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double maxValue = 255.0;
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};
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explicit RasterRenderer(RasterDataProvider* provider);
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// Render to an 8-bit RGB image. Returns empty image on failure.
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QImage render(const Params& params);
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private:
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RasterDataProvider* m_provider;
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// helper to map float buffer to 8-bit with min/max stretch
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static void stretchTo8bit(const std::vector<float>& in, std::vector<unsigned char>& out, float minVal, float maxVal);
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};
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