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#ifndef JASPERS_PPM_H
#define JASPERS_PPM_H
struct RGBTriplet {
float red, green, blue;
};
class PPMImage {
private:
unsigned int width, height;
unsigned int maxval;
unsigned char* data;
public:
PPMImage(const unsigned int width, const unsigned int height, const unsigned int maxval, const unsigned char* const data=0);
PPMImage(const char* const filename);
~PPMImage();
void saveTo(const char* const filename);
unsigned int getWidth() const { return width; }
unsigned int getHeight() const { return height; }
unsigned int getMaximum() const { return maxval; }
unsigned int getColor(unsigned int colorIndex, unsigned int x, unsigned int y) const {
unsigned int index = (y*width+x)*3+colorIndex;
if ( maxval > 255 ) {
return reinterpret_cast<unsigned short*>(data)[index];
}
else {
return data[index];
}
}
unsigned int getRed(unsigned int x, unsigned int y) const { return getColor(0, x, y); }
unsigned int getGreen(unsigned int x, unsigned int y) const { return getColor(1, x, y); }
unsigned int getBlue(unsigned int x, unsigned int y) const { return getColor(2, x, y); }
void setColor(unsigned int colorIndex, unsigned int x, unsigned int y, unsigned int value) {
unsigned int index = (y*width+x)*3+colorIndex;
if ( maxval > 255 ) {
reinterpret_cast<unsigned short*>(data)[index] = static_cast<unsigned short>(value);
}
else {
data[index] = static_cast<unsigned char>(value);
}
}
void setRed(unsigned int x, unsigned int y, unsigned int value) { setColor(0, x, y, value); }
void setGreen(unsigned int x, unsigned int y, unsigned int value) { setColor(1, x, y, value); }
void setBlue(unsigned int x, unsigned int y, unsigned int value) { setColor(2, x, y, value); }
};
#endif//JASPERS_PPM_H
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