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ノイズに渡す引数の間隔を変える。
Change the interval of arguments passed to noise.
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#pragma once #include "ofMain.h" class ofApp : public ofBaseApp { public: void setup(); void update(); void draw(); void keyPressed(int key) {}; void keyReleased(int key) {}; void mouseMoved(int x, int y) {}; void mouseDragged(int x, int y, int button) {}; void mousePressed(int x, int y, int button) {}; void mouseReleased(int x, int y, int button) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; ofEasyCam cam; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetColor(39); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); float deg_span = 0.1; float noise_span = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0.0001, 0.025); for (float radius = 50; radius <= 200; radius += 50) { ofMesh face, line; line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); for (float deg = 0; deg < 360; deg += deg_span) { int index = face.getNumVertices() - 2; auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)); auto noise_value = ofNoise(glm::vec3(location * noise_span, ofGetFrameNum() * 0.0001)); float z = noise_value < 0.45 ? 1 : noise_value < 0.65 ? ofMap(noise_value, 0.45, 0.65, 0, 50) : 50; face.addVertex(glm::vec3(location, -z)); face.addVertex(glm::vec3(location, z)); line.addVertex(glm::vec3(location, -z)); line.addVertex(glm::vec3(location, z)); ofColor color; color.setHsb((int)ofMap(deg, 0, 360, 0, 255 * 3) % 255, 255, 255); face.addColor(color); face.addColor(color); if (index > -1) { face.addIndex(index); face.addIndex(index + 1); face.addIndex(index + 3); face.addIndex(index); face.addIndex(index + 2); face.addIndex(index + 3); line.addIndex(index); line.addIndex(index + 2); line.addIndex(index + 1); line.addIndex(index + 3); } } face.addIndex(0); face.addIndex(1); face.addIndex(face.getNumVertices() - 2); face.addIndex(1); face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); line.addIndex(0); line.addIndex(line.getNumVertices() - 2); line.addIndex(1); line.addIndex(line.getNumVertices() - 1); face.draw(); ofSetColor(39); line.drawWireframe(); } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |