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https://github.com/bulletphysics/bullet3
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47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
#ifndef GRAPHING_TEXTURE_H
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#define GRAPHING_TEXTURE_H
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#include "LinearMath/btAlignedObjectArray.h"
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struct GraphingTexture
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{
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int m_textureId;
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//assume rgba (8 bit per component, total of 32bit per pixel, for m_width*m_height pixels)
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btAlignedObjectArray<unsigned char> m_imageData;
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int m_width;
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int m_height;
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GraphingTexture();
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virtual ~GraphingTexture();
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bool create(int texWidth, int texHeight);
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void destroy();
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void setPixel(int x, int y, unsigned char red, unsigned char green, unsigned char blue, unsigned char alpha)
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{
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if (y>=0 && y<m_height && x>=0 && x<m_width)
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{
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m_imageData[x*4+y*4*m_width+0] = red;
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m_imageData[x*4+y*4*m_width+1] = green;
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m_imageData[x*4+y*4*m_width+2] = blue;
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m_imageData[x*4+y*4*m_width+3] = alpha;
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}
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}
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void getPixel(int x, int y, unsigned char& red, unsigned char& green, unsigned char& blue, unsigned char& alpha)
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{
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red = m_imageData[x*4+y*4*m_width+0];
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green = m_imageData[x*4+y*4*m_width+1];
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blue = m_imageData[x*4+y*4*m_width+2];
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alpha = m_imageData[x*4+y*4*m_width+3];
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}
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void uploadImageData();
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int getTextureId()
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{
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return m_textureId;
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}
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};
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#endif //GRAPHING_TEXTURE_H
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