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マーブル・ハート。
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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 mouseEntered(int x, int y) {}; void mouseExited(int x, int y) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; glm::vec3 make_point(float theta); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofSetColor(255); ofNoFill(); ofSetLineWidth(2); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(139); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5 + glm::vec2(0, -50)); vector<ofColor> color_list = { ofColor(239, 0, 0), ofColor(0, 0, 239), ofColor(0, 239, 0) }; float scale_span = 0.1; float deg_span = 0.1; for (int i = 0; i < color_list.size(); i++) { ofMesh mesh; float noise_seed = ofRandom(1000); for (float scale = 2; scale < 20; scale += scale_span) { for (float deg = 0; deg < 360; deg += deg_span) { auto noise_location = this->make_point((deg + deg_span * 0.5) * DEG_TO_RAD) * (scale + scale_span * 0.5); if (ofNoise(noise_seed, noise_location.x * 0.005, noise_location.y * 0.005, ofGetFrameNum() * 0.03) > 0.45) { mesh.addVertex(this->make_point(deg * DEG_TO_RAD) * scale); mesh.addVertex(this->make_point((deg + deg_span) * DEG_TO_RAD) * scale); mesh.addVertex(this->make_point((deg + deg_span) * DEG_TO_RAD) * (scale + scale_span)); mesh.addVertex(this->make_point(deg * DEG_TO_RAD) * (scale + scale_span)); mesh.addIndex(mesh.getNumVertices() - 1); mesh.addIndex(mesh.getNumVertices() - 2); mesh.addIndex(mesh.getNumVertices() - 3); mesh.addIndex(mesh.getNumVertices() - 1); mesh.addIndex(mesh.getNumVertices() - 3); mesh.addIndex(mesh.getNumVertices() - 4); mesh.addColor(color_list[i]); mesh.addColor(color_list[i]); mesh.addColor(color_list[i]); mesh.addColor(color_list[i]); } } } mesh.draw(); } ofBeginShape(); for (float deg = 0; deg < 360; deg += 1) { ofVertex(this->make_point(deg * DEG_TO_RAD) * 20); } ofEndShape(true); ostringstream os; os << setw(4) << setfill('0') << ofGetFrameNum() + 1; ofImage image; image.grabScreen(0, 0, ofGetWidth(), ofGetHeight()); image.saveImage("image/img_" + os.str() + ".jpg"); if (ofGetFrameNum() + 1 >= 24 * 20) { std::exit(1); } // > ffmpeg -i img_%04d.jpg -r 30 out.mp4 } //-------------------------------------------------------------- // Reference by https://twitter.com/shiffman/status/1095764239665512453 glm::vec3 ofApp::make_point(float theta) { float x = 16 * (pow(sin(theta), 3)); float y = 13 * cos(theta) - 5 * cos(2 * theta) - 2 * cos(3 * theta) - cos(4 * theta); return glm::vec3(x, -y, 0); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |