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散りばって集まる。
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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 windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; float param; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofSetColor(239, 39, 39); ofSetLineWidth(3); ofNoFill(); } //-------------------------------------------------------------- void ofApp::update() { int frame_number = ofGetFrameNum() % 100; if (frame_number < 20) { this->param = ofMap(frame_number, 0, 20, 0, 1); } else if (frame_number < 50) { this->param = 1; } else if(frame_number < 70) { this->param = ofMap(frame_number, 50, 70, 1, 0); } else { this->param = 0; } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); int in_radius = 100; int out_radius = 550; for (int deg = 0; deg < 360; deg += 5) { auto out = glm::vec2(out_radius * cos(deg * DEG_TO_RAD), out_radius * sin(deg * DEG_TO_RAD)); auto noise_value = ofNoise(glm::vec3(out, ofGetFrameNum() * 0.03)); auto noise_radius = ofMap(noise_value, 0, 1, 0, 250); auto radius = in_radius + noise_radius * this->param; auto in = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)); ofBeginShape(); for (float small_deg = deg - 5; small_deg <= deg + 5; small_deg += 0.5) { ofVertex(radius * cos(small_deg * DEG_TO_RAD), radius * sin(small_deg * DEG_TO_RAD)); } ofEndShape(); ofDrawLine(in, out); } /* int start = 500; 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()); } |