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交互に描く。
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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) {}; float noise_param; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofSetColor(239); ofSetLineWidth(1.5); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); if (ofGetFrameNum() % 50 < 20) { this->noise_param += ofMap(ofGetFrameNum() % 50, 0, 20, 0.08, 0.00025); } else { this->noise_param += 0.0005; } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); float max_radius = 720; float deg_span = 180; for (int i = 0; i < 2; i++) { i == 0 ? ofSetColor(255, 139, 39) : ofSetColor(39, 139, 239); auto noise_seed = ofRandom(1000); for (float radius = 100 + i * 5; radius < max_radius; radius += 10) { for (float deg_start = 0; deg_start < 360; deg_start += deg_span) { float deg_param = ofMap(ofNoise(noise_seed, radius * 0.002 - this->noise_param), 0, 1, -360, 360); ofNoFill(); ofBeginShape(); for (float deg = deg_start + deg_param; deg < deg_start + deg_param + deg_span * 0.25; deg += 1) { ofVertex(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)); } ofEndShape(false); } } } /* int start = 225; if (ofGetFrameNum() > start) { ostringstream os; os << setw(4) << setfill('0') << ofGetFrameNum() - start; ofImage image; image.grabScreen(0, 0, ofGetWidth(), ofGetHeight()); image.saveImage("image/cap/img_" + os.str() + ".jpg"); if (ofGetFrameNum() - start >= 25 * 20) { std::exit(1); } } */ } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |