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ランダム・レール。
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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(30); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); auto len = 50; for (int i = 0; i < 1; i++) { auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000)); for (int k = 0; k < 30; k++) { auto location = glm::vec2( ofMap(ofNoise(noise_seed.x * 0.03, ofGetFrameNum() * 0.02 + k * 0.02), 0, 1, -320, 320), ofMap(ofNoise(noise_seed.y * 0.03, ofGetFrameNum() * 0.02 + k * 0.02), 0, 1, -320, 320)); auto next_location = glm::vec2( ofMap(ofNoise(noise_seed.x * 0.03, ofGetFrameNum() * 0.02 + k * 0.02 + 0.002), 0, 1, -320, 320), ofMap(ofNoise(noise_seed.y * 0.03, ofGetFrameNum() * 0.02 + k * 0.02 + 0.002), 0, 1, -320, 320)); auto deg = atan2(next_location.y - location.y, next_location.x - location.x) * RAD_TO_DEG; ofPushMatrix(); ofTranslate(location); auto location_1 = glm::vec2(len * cos((deg + 90) * DEG_TO_RAD), len * sin((deg + 90) * DEG_TO_RAD)); auto location_2 = glm::vec2(len * cos((deg - 90) * DEG_TO_RAD), len * sin((deg - 90) * DEG_TO_RAD)); ofSetColor(0, ofMap(k, 0, 30, 32, 255)); ofDrawLine(location_1, location_2); ofDrawCircle(location_1, 3); ofDrawCircle(location_2, 3); ofPopMatrix(); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |