[ Video ]
[ About ]
円をシェイク。
Shake the circle.
[ Source ]
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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) {}; ofEasyCam cam; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetLineWidth(2); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); auto len = 20; auto noise_param = ofGetFrameNum() * 0.01; for (int radius = 50; radius < 300; radius += 30) { auto rotate = 0.f; auto noise_value = ofNoise(noise_param += 0.08); if (noise_value < 0.45) { rotate = ofMap(noise_value, 0, 0.45, -90, 0); } else if (noise_value > 0.55) { rotate = ofMap(noise_value, 0.55, 1, 0, 90); } ofPushMatrix(); ofRotateY(rotate); vector<glm::vec2> outer, inner; for (int deg = 0; deg < 360; deg++) { outer.push_back(glm::vec2((radius + len * 0.5) * cos(deg * DEG_TO_RAD), (radius + len * 0.5) * sin(deg * DEG_TO_RAD))); inner.push_back(glm::vec2((radius - len * 0.5) * cos(deg * DEG_TO_RAD), (radius - len * 0.5) * sin(deg * DEG_TO_RAD))); } ofFill(); ofSetColor(239); ofBeginShape(); ofVertices(outer); ofNextContour(true); ofVertices(inner); ofEndShape(true); ofNoFill(); ofSetColor(39); ofBeginShape(); ofVertices(outer); ofNextContour(true); ofVertices(inner); ofEndShape(true); ofPopMatrix(); } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |