void FadeoutAnimation::play(Picture &picture) {
if (!ended) {
IplImage *img = new IplImage(picture);
int step = img->widthStep;
int channel = img->nChannels;
a++;
for (int i = 0; i < img->height; i++) {
for (int j = 0; j < img->width; j++) {
for (int k = 0; k < channel; k++) {
//img->imageData[i*step + j*channel + k] = (uchar)img->imageData[i*step + j*channel + k] * pow(0.95, a);
img->imageData[i*step + j*channel + k] = (uchar)img->imageData[i*step + j*channel + k] * (1 - 0.02 * a);
}
}
}
if ((1 - 0.02 * a) < 0.1) {
//if(pow(0.95, a) < 0.1){
setEnd(true);
}
if(picture.getIsFocus()){
int len = 60;
int centerX = picture.cols / 2;
int centerY = picture.rows / 2;
CvPoint p1, p2, p3, p4;
p1 = cvPoint(centerX, centerY - len / 2);
p2 = cvPoint(centerX, centerY + len / 2);
p3 = cvPoint(centerX - len / 2, centerY);
p4 = cvPoint(centerX + len / 2, centerY);
CvScalar color;
color = CV_RGB(255, 0 ,0);
cvLine(img, p1, p2, color, 3, -1, 0);
cvLine(img, p3, p4, color, 3, -1, 0);
picture.setFocus(false);
}
picture.setContent(img);
}
}
