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円波。
Circle wave.
[ 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) {}; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetColor(39); ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); auto span = 15; for (auto radius = 50; radius < 340; radius += span) { auto small_radius = radius; auto big_radius = radius + span; auto noise_deg = ofMap(ofNoise(radius * 0.005 + ofGetFrameNum() * 0.01), 0, 1, 1, 500); if (noise_deg > 360) { noise_deg = 360; } vector<glm::vec2> in, out; for (auto deg = 0; deg < noise_deg; deg++) { in.push_back(glm::vec2(small_radius * cos(deg * DEG_TO_RAD), small_radius * sin(deg * DEG_TO_RAD))); out.push_back(glm::vec2(big_radius * cos(deg * DEG_TO_RAD), big_radius * sin(deg * DEG_TO_RAD))); } reverse(out.begin(), out.end()); ofSetColor(39); ofFill(); ofBeginShape(); ofVertices(in); ofVertices(out); ofEndShape(true); vector<glm::vec2> small_circle, big_circle; for (auto deg = 0; deg < 360; deg++) { small_circle.push_back(glm::vec2(small_radius * cos(deg * DEG_TO_RAD), small_radius * sin(deg * DEG_TO_RAD))); big_circle.push_back(glm::vec2(big_radius * cos(deg * DEG_TO_RAD), big_radius * sin(deg * DEG_TO_RAD))); } ofSetColor(39); ofNoFill(); ofBeginShape(); ofVertices(small_circle); ofEndShape(true); ofBeginShape(); ofVertices(big_circle); ofEndShape(true); ofSetColor(239); ofNoFill(); ofBeginShape(); ofVertices(in); ofVertices(out); ofEndShape(true); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |