本文整理汇总了C++中ofFloatImage::allocate方法的典型用法代码示例。如果您正苦于以下问题：C++ ofFloatImage::allocate方法的具体用法？C++ ofFloatImage::allocate怎么用？C++ ofFloatImage::allocate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ofFloatImage的用法示例。
在下文中一共展示了ofFloatImage::allocate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: setup
//--------------------------------------------------------------
void testApp::setup(){
ofBackground(20);
ofSetFrameRate(30);
gui.setup("Perlin Noise", "", 20, 20);
gui.add(alpha.setup("alpha", 2.0, 0.5, 10.0));
gui.add(beta.setup("beta", 2.0, 0.5, 5.0));
gui.add(octaveCnt.setup("octaves", 6, 1, 8));
gui.add(norm.setup("normalize", true));
gui.add(offset_incr.setup("speed", 0.0, 0.0, 0.2));
alpha.addListener(this, &testApp::floatValChanged);
beta.addListener(this, &testApp::floatValChanged);
octaveCnt.addListener(this, &testApp::octaveCntChanged);
norm.addListener(this, &testApp::boolValChanged);
img.allocate(img_w, img_h, OF_IMAGE_GRAYSCALE);
for (int i = 0; i < octaveCnt; i++) {
ofImage tmp;
tmp.allocate(img_w, img_h, OF_IMAGE_GRAYSCALE);
images.push_back(tmp);
}
offset = 0;
}示例2: setupSpeakers
void setupSpeakers() {
ofVec3f speakers[n_speakers];
// maybe need to swap dimensions here?
// possibly change scale too
float eps = 0.001; // needed to avoid "== 0" check in shader
speakers[0] = ofVec3f(0,0,0)+eps; // front left
speakers[1] = ofVec3f(0,1,0)+eps; // front right
speakers[2] = ofVec3f(1,1,0)+eps; // rear right
speakers[3] = ofVec3f(1,0,0)+eps; // rear left
float speakerAreaSize = 0.02;
speakerXyzMap.allocate(n_samples, n_speakers, OF_IMAGE_COLOR_ALPHA);
speakerConfidenceMap.allocate(n_samples, n_speakers, OF_IMAGE_COLOR_ALPHA);
float* xyzPixels = speakerXyzMap.getPixels().getData();
float* confidencePixels = speakerConfidenceMap.getPixels().getData();
for(int i = 0; i < n_speakers; i++){
for(int j = 0; j < n_samples; j++){
// sample a spiral
float angle = j * TWO_PI / 20; // 20 samples per full rotation
float radius = ((float) j / n_samples) * speakerAreaSize; // 0 to speakerAreaSize
// might need to swap axes here too
xyzPixels[0] = speakers[i].x + sin(angle) * radius;
xyzPixels[1] = speakers[i].y + cos(angle) * radius;
xyzPixels[2] = speakers[i].z;
xyzPixels[3] = 1;
xyzPixels += 4;
confidencePixels[0] = 1;
confidencePixels[1] = 1;
confidencePixels[2] = 1;
confidencePixels[3] = 1;
confidencePixels += 4;
}
}
speakerXyzMap.update();
speakerConfidenceMap.update();
speakerFbo.allocate(n_samples, n_speakers);
speakerPixels.allocate(n_samples, n_speakers, OF_IMAGE_COLOR_ALPHA);
}