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回転する円弧。
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#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(25); ofSetWindowTitle("openframeworks"); ofBackground(239); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); float radius = 45; float len = 10; bool flag = true; ofColor color; for (int x = -288; x <= 288; x += 144) { for (int y = -288; y <= 288; y += 144) { ofPushMatrix(); ofTranslate(x, y); flag = !flag; for (int i = 0; i < 4; i++) { len = ofMap(i, 0, 3, 2, 18); vector<glm::vec2> vertices_1, vertices_2; float deg_start = ofRandom(360) + ofGetFrameNum() * ofRandom(3, 10) * (flag ? 1 : -1); for (float deg = deg_start; deg < deg_start + 90; deg += 1) { vertices_1.push_back(glm::vec2((radius - len * 0.5) * cos(deg * DEG_TO_RAD), (radius - len * 0.5) * sin(deg * DEG_TO_RAD))); vertices_2.push_back(glm::vec2((radius + len * 0.5) * cos(deg * DEG_TO_RAD), (radius + len * 0.5) * sin(deg * DEG_TO_RAD))); } reverse(vertices_2.begin(), vertices_2.end()); ofNoFill(); ofSetColor(0); ofSetLineWidth(1); ofBeginShape(); ofVertices(vertices_1); ofVertices(vertices_2); ofEndShape(true); if (i == 0) { ofFill(); ofBeginShape(); ofVertices(vertices_1); ofVertices(vertices_2); ofEndShape(true); } if (i == 2) { color.setHsb(ofRandom(255), 255, 200); ofSetColor(color); ofSetLineWidth(2); ofBeginShape(); ofVertices(vertices_1); ofVertices(vertices_2); ofEndShape(true); } } ofPopMatrix(); } } /* int start = 1; 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()); } |