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赤と青の2色の線で渦を描写
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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(60); ofBackground(239); ofSetWindowTitle("Insta"); ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { ofColor colors[] = {ofColor(139, 39, 39), ofColor(39, 39, 139)}; for (int x = 0; x < 3; x++) { for (int y = 0; y < 3; y++) { ofPushMatrix(); ofTranslate(x * 240 + 120, y * 240 + 120); for (int radius = 20; radius < 120; radius += 10) { for (int i = 0; i < 2; i++) { int deg_start = radius + ofGetFrameNum() + (x + y) * 120 + i * 180; for (int deg = deg_start; deg < deg_start + 120; deg += 5) { ofPoint p1(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)); ofPoint p2(radius * cos((deg + 5) * DEG_TO_RAD), radius * sin((deg + 5) * DEG_TO_RAD)); ofSetColor(colors[i], ofMap(deg, deg_start, deg_start + 120, 0, 255)); ofDrawLine(p1, p2); } ofDrawCircle(radius * cos((deg_start + 120) * DEG_TO_RAD), radius * sin((deg_start + 120) * DEG_TO_RAD), 3); } } ofPopMatrix(); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |