本文整理汇总了C++中ofPixels::getChannel方法的典型用法代码示例。如果您正苦于以下问题：C++ ofPixels::getChannel方法的具体用法？C++ ofPixels::getChannel怎么用？C++ ofPixels::getChannel使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ofPixels的用法示例。
在下文中一共展示了ofPixels::getChannel方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: pixelateInv
void ofxImageTS::pixelateInv(ofPixels pixels, int pixelRatio, int X, int Y, int W, int H) {
ofPixels R,G,B, Rc, Gc, Bc;
pixels.resize(W,H);
R = pixels.getChannel(0);
G = pixels.getChannel(1);
B = pixels.getChannel(2);
Rc = R;
Gc = G;
Bc = B;
int c = 0;
for(int i = R.size()-1; i > 0; i--){
Rc[c] = R[i];
Gc[c] = G[i];
Bc[c] = B[i];
c++;
}
if(pixelRatio > 4 || pixelRatio < 0) {
ofLogNotice("Pixel Ratio must be between 0 and 5");
}
else {
int camWidth = pixels.getWidth();
int camHeight = pixels.getHeight();
int boxWidth = pixels.getWidth()/(pow(2,pixelRatio)*10);
int boxHeight = pixels.getHeight()/(pow(2,pixelRatio)*10);
float tot = boxWidth*boxHeight;
for (int x = 0; x < camWidth; x += boxWidth) {
for (int y = 0; y < camHeight; y += boxHeight) {
float Red = 0, Green = 0, Blue = 0;
for (int k = 0; k < boxWidth; k++) {
for (int l = 0; l < boxHeight; l++) {
int index = (x + k) + (y + l) * camWidth;
Red += Rc[index];
Green += Gc[index];
Blue += Bc[index];
}
ofSetColor(Red/tot,Green/tot,Blue/tot);
ofFill();
ofDrawRectangle(x+X, y+Y, boxWidth, boxHeight);
}
}
}
}
}示例2: calculateFlow
void threadedOpticalFlow::calculateFlow(const ofPixels& _pixels){
lock();
// realocate if size changed since last update
if(_pixels.getWidth() != width && _pixels.getHeight() != height){
width = _pixels.getWidth();
height = _pixels.getHeight();
allocateBuffers(width, height);
}
// deep copy of incoming pixels
// asumes same values in all channels
//pixelsInBack.setChannel(0, _pixels.getChannel(0));
pixelsInBack = _pixels.getChannel(0);
bFlowDirty = true;
condition.signal();
unlock();
}