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#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) {}; ofMesh mesh; float noise_step; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { if (ofGetFrameNum() % 50 < 40) { this->noise_step += ofMap(ofGetFrameNum() % 50, 0, 40, 0.2, 0.005); } else { this->noise_step += 0.005; } this->mesh.clear(); ofSeedRandom(39); float span = 0.5; ofColor color; for (int i = 0; i < 4; i++) { auto noise_seed = ofRandom(1000); for (float x = 0; x < 720; x += span) { for (float y = 0; y < 720; y += span) { float noise_value = ofNoise(noise_seed, x * 0.002, y * 0.002, glm::distance(glm::vec2(360, 360), glm::vec2(x, y)) * 0.005 - this->noise_step); if (noise_value > 0.4 && noise_value < 0.6) { this->mesh.addVertex(glm::vec3(x, y, 0)); this->mesh.addVertex(glm::vec3(x + span, y, 0)); this->mesh.addVertex(glm::vec3(x + span, y + span, 0)); this->mesh.addVertex(glm::vec3(x, y + span, 0)); this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 4); this->mesh.addIndex(this->mesh.getNumVertices() - 3); this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); this->mesh.addIndex(this->mesh.getNumVertices() - 3); auto alpha = 0; if (noise_value >= 0.5) { alpha = ofMap(noise_value, 0.5, 0.6, 255, 0); } else { alpha = ofMap(noise_value, 0.4, 0.5, 0, 255); } color.setHsb(ofMap(i, 0, 4, 0, 255), 200, 200, alpha); for (int k = 0; k < 4; k++) { this->mesh.addColor(color); } } } } } } //-------------------------------------------------------------- void ofApp::draw() { this->mesh.draw(); /* int start = 1; if (ofGetFrameNum() > start) { ostringstream os; os << setw(4) << setfill('0') << ofGetFrameNum() - start; ofImage image; image.grabScreen(0, 0, ofGetWidth(), ofGetHeight()); image.saveImage("image/cap/img_" + os.str() + ".jpg"); if (ofGetFrameNum() - start >= 25 * 20) { std::exit(1); } } */ */ } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |