BOOL fipImage::adjustBrightnessContrastGamma(double brightness, double contrast, double gamma) {
if(_dib) {
_bHasChanged = TRUE;
return FreeImage_AdjustColors(_dib, brightness, contrast, gamma, FALSE);
}
return FALSE;
}
/**
* Adjusts an image's brightness, contrast and gamma as well as it may optionally
* invert the image within a single operation. If more than one of these image display properties
* need to be adjusted, using this function should be preferred over calling each adjustment
* function separately. That's particularly true for huge images or if performance is an issue.
* return false if no image is loaded or if the image manipulation otherwise fails.
* @param pBrightness Brightness.
* @param pContrast Contrast.
* @param pGamma Gamma quality.
* @param pNegative Negative filter on / off.
*/
bool IND_Image::adjustColors(double pBrightness, double pContrast, double pGamma, bool pNegative) {
// No image loaded
if (!isImageLoaded()) return false;
return FreeImage_AdjustColors(getFreeImageHandle(), pBrightness, pContrast, pGamma, pNegative) != 0;
}
