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ランダムウォーカーを観察する。
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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 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(39); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); ofSetLineWidth(1.5); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); auto radius = 10; auto number = 9; auto len = 30; for (int i = 0; i < number; i++) { auto x_min = 240 * (i % 3) - 360; auto x_max = 240 * (i % 3) - 120; auto y_min = 240 * (i / 3) - 360; auto y_max = 240 * (i / 3) - 120; auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000)); for (int k = 0; k < len; k++) { auto location = glm::vec2( ofMap(ofNoise(noise_seed.x * 0.03, ofGetFrameNum() * 0.02 + k * 0.02), 0, 1, x_min + 10, x_max - 10), ofMap(ofNoise(noise_seed.y * 0.03, ofGetFrameNum() * 0.02 + k * 0.02), 0, 1, y_min + 10, y_max - 10)); auto next_location = glm::vec2( ofMap(ofNoise(noise_seed.x * 0.03, ofGetFrameNum() * 0.02 + k * 0.02 + 0.002), 0, 1, x_min + 10 , x_max - 10), ofMap(ofNoise(noise_seed.y * 0.03, ofGetFrameNum() * 0.02 + k * 0.02 + 0.002), 0, 1, y_min + 10, y_max - 10)); auto deg = atan2(next_location.y - location.y, next_location.x - location.x) * RAD_TO_DEG; ofPushMatrix(); ofTranslate(location); ofRotate(deg); ofColor color; color.setHsb(ofMap(i, 0, number, 0, 255), 180, 255); ofSetColor(color, ofMap(k, 0, len, 32, 255)); ofNoFill(); ofBeginShape(); for (int d = -120; d <= 120; d += 120) { ofVertex(radius * cos(d * DEG_TO_RAD), radius * sin(d * DEG_TO_RAD)); } ofEndShape(false); ofPopMatrix(); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |