void Image::overwriteMask(const Color& maskedColor, const Color& insideColor, const Color& outsideColor)
{
assert(m_bpp == 4);
for(int p=0;p<getPixelCount();p++) {
uint8& r = m_pixels[p*4 + 0];
uint8& g = m_pixels[p*4 + 1];
uint8& b = m_pixels[p*4 + 2];
uint8& a = m_pixels[p*4 + 3];
Color pixelColor(r,g,b,a);
Color writeColor = (pixelColor == maskedColor) ? insideColor : outsideColor;
r = writeColor.r();
g = writeColor.g();
b = writeColor.b();
a = writeColor.a();
}
}
/*! \brief Copy the contents of the texture to a floating point array.
This will automatically resize the passed array to fit the
entire contents of the texture in.
*/
inline void writeto(std::vector<uint8_t>& data, GLint lvl = 0)
{
data.resize(4 * getPixelCount(lvl));
bind(0);
GLenum type;
switch (components())
{
case 1: type = GL_R; break;
case 2: type = GL_RG; break;
case 3: type = GL_RGB; break;
case 4: type = GL_RGBA; break;
default:
M_throw() << "Too many components!";
}
glGetTexImage(_texType, lvl, type, GL_UNSIGNED_BYTE, &data[0]);
}
