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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; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openFrameworks"); ofBackground(255); int size = 10; for (int x = 30; x < 690; x += size) { for (int y = 30; y < 690; y += size) { int index = this->mesh.getNumVertices(); this->mesh.addVertex(glm::vec3(x, y, 0)); this->mesh.addVertex(glm::vec3(x + size, y, 0)); this->mesh.addVertex(glm::vec3(x + size, y + size, 0)); this->mesh.addVertex(glm::vec3(x, y + size, 0)); this->mesh.addIndex(index + 0); this->mesh.addIndex(index + 1); this->mesh.addIndex(index + 2); this->mesh.addIndex(index + 0); this->mesh.addIndex(index + 2); this->mesh.addIndex(index + 3); this->mesh.addColor(ofColor(0)); this->mesh.addColor(ofColor(0)); this->mesh.addColor(ofColor(0)); this->mesh.addColor(ofColor(0)); } } } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); auto noise_seed = glm::vec4(ofRandom(1000), ofRandom(1000), ofRandom(1000), ofRandom(1000)); auto noise_step = 0.001; auto frame_step = 0.03; for (int i = 0; i < this->mesh.getNumVertices(); i++) { auto vertex = this->mesh.getVertex(i); auto noise_value = glm::vec3( ofNoise(noise_seed.r, vertex.x * noise_step, vertex.y * noise_step + ofGetFrameNum() * frame_step), ofNoise(noise_seed.g, vertex.x * noise_step, vertex.y * noise_step + ofGetFrameNum() * frame_step), ofNoise(noise_seed.b, vertex.x * noise_step, vertex.y * noise_step + ofGetFrameNum() * frame_step)); auto r = noise_value.r < 0.2 ? 0 : noise_value.r < 0.7 ? ofMap(noise_value.r, 0.2, 0.7, 0, 255) : 255; auto g = noise_value.g < 0.2 ? 0 : noise_value.g < 0.7 ? ofMap(noise_value.g, 0.2, 0.7, 0, 255) : 255; auto b = noise_value.b < 0.2 ? 0 : noise_value.b < 0.7 ? ofMap(noise_value.b, 0.2, 0.7, 0, 255) : 255; this->mesh.setColor(i, ofColor(r, g, b, 255)); } } //-------------------------------------------------------------- void ofApp::draw() { this->mesh.draw(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |