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ofBlendMode::OF_BLENDMODE_MULTIPLY
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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) {}; ofMesh mesh; vector<float> noise_seed_list; vector<float> noise_param_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(255); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_MULTIPLY); this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); for (int i = 0; i < 5; i++) { this->noise_seed_list.push_back(ofRandom(1000)); this->noise_param_list.push_back(0); } } //-------------------------------------------------------------- void ofApp::update() { this->mesh.clear(); int radius = 300; int span = 25; ofColor color; for (int i = 0; i < this->noise_seed_list.size(); i++) { color.setHsb(ofMap(i, 0, this->noise_seed_list.size(), 0, 255), 128, 255); for (int deg = 0; deg < 360; deg += 1) { auto noise_location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)); auto noise_param = ofMap(ofNoise(this->noise_seed_list[i], noise_location.x * 0.005, noise_location.y * 0.005, this->noise_param_list[i]), 0, 1, 0.5, 1); this->mesh.addVertex(glm::vec3(radius * noise_param * cos(deg * DEG_TO_RAD), radius * noise_param * sin(deg * DEG_TO_RAD), 0)); this->mesh.addColor(color); } this->noise_param_list[i] += 0.005; } for (int i = 0; i < this->mesh.getNumVertices(); i++) { for (int k = i + 1; k < this->mesh.getNumVertices(); k++) { auto distance = glm::distance(this->mesh.getVertex(i), this->mesh.getVertex(k)); if (distance < span) { this->mesh.addIndex(i); this->mesh.addIndex(k); } } } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); this->mesh.drawWireframe(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |