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ノイズ関数で動く親サークルと子サークル
Big circle and small circle moving by Noise method.
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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) {}; float noise_seed; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(0); ofSetLineWidth(2); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); this->noise_seed = 0; } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(10); if (ofGetFrameNum() % 60 < 45) { this->noise_seed += ofMap(ofGetFrameNum() % 60, 0, 45, 0.04, 0); } } //-------------------------------------------------------------- void ofApp::draw() { int span = 120; int range = 100; int radius = 20; for (int x = span * 0.5; x < ofGetWidth(); x += span) { for (int y = span * 0.5; y < ofGetHeight(); y += span) { glm::vec2 center_point; int number_of_point = 4; for (int i = 0; i < number_of_point; i++) { glm::vec2 point = glm::vec2( x + ofMap(ofNoise(ofRandom(10000), this->noise_seed), 0, 1, -range * 0.5, range * 0.5), y + ofMap(ofNoise(ofRandom(10000), this->noise_seed), 0, 1, -range * 0.5, range * 0.5)); if (i == 0) { ofNoFill(); ofSetColor(255); ofDrawCircle(point, radius); center_point = point; } else { ofFill(); ofColor color; color.setHsb((int)(ofRandom(255) + this->noise_seed * ofRandom(100, 200)) % 255, 200, 255); ofSetColor(color); ofDrawCircle(point, radius * 0.3); float angle = std::atan2(point.y - center_point.y, point.x - center_point.x); glm::vec2 line_point = center_point + glm::vec2(radius * cos(angle), radius * sin(angle)); ofDrawLine(line_point, point); float rad_span = PI / 3; ofBeginShape(); for (float rad = angle - rad_span; rad <= angle + rad_span; rad += PI / 60) { ofVertex(center_point + glm::vec2(radius * 0.8 * cos(rad), radius * 0.8 * sin(rad))); } for (float rad = angle + rad_span; rad >= angle - rad_span; rad -= PI / 60) { ofVertex(center_point + glm::vec2(radius * 0.3 * cos(rad), radius * 0.3 * sin(rad))); } ofEndShape(true); } } } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |