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ノイズの幅を変える。
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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; ofMesh mesh; float noise_param; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofEnableDepthTest(); auto ico_sphere = ofIcoSpherePrimitive(200, 7); this->mesh = ico_sphere.getMesh(); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->mesh.clearColors(); this->noise_param = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.035), 0, 1, 0.0005, 0.02); ofColor color; for (int i = 0; i < this->mesh.getNumVertices(); i++) { auto noise_value = ofMap(ofNoise(glm::vec4(this->mesh.getVertex(i) * this->noise_param, ofGetFrameNum() * 0.015)), 0, 1, 0, 10); int int_noise_value = (int)noise_value; noise_value = noise_value - int_noise_value; auto value = ofMap(abs(noise_value - 0.5), 0, 0.5, 39, 255); color = ofColor(value); this->mesh.addColor(color); } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); this->mesh.drawFaces(); this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |