void ImageOperation::executePixel(float output[4], float x, float y, PixelSampler sampler)
{
if ((this->m_imageFloatBuffer == NULL && this->m_imageByteBuffer == NULL) || x < 0 || y < 0 || x >= this->getWidth() || y >= this->getHeight() ) {
zero_v4(output);
}
else {
sampleImageAtLocation(this->m_buffer, x, y, sampler, true, output);
}
}
void ImageAlphaOperation::executePixel(float output[4], float x, float y, PixelSampler sampler)
{
float tempcolor[4];
if ((this->m_imageFloatBuffer == NULL && this->m_imageByteBuffer == NULL) || x < 0 || y < 0 || x >= this->getWidth() || y >= this->getHeight() ) {
output[0] = 0.0f;
}
else {
tempcolor[3] = 1.0f;
sampleImageAtLocation(this->m_buffer, x, y, sampler, false, tempcolor);
output[0] = tempcolor[3];
}
}
void ImageOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
{
int ix = x, iy = y;
if (this->m_imageFloatBuffer == NULL && this->m_imageByteBuffer == NULL) {
zero_v4(output);
}
else if (ix < 0 || iy < 0 || ix >= this->m_buffer->x || iy >= this->m_buffer->y) {
zero_v4(output);
}
else {
sampleImageAtLocation(this->m_buffer, x, y, sampler, true, output);
}
}
