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トーラス座標(ドーナツ状の座標)を走るラインをたくさん描きました。
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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) {}; ofEasyCam cam; ofPoint make_point(float radius, float small_radius, float deg, float small_deg); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofBackground(39); ofSetWindowTitle("Insta"); ofSetLineWidth(1.5); ofEnableDepthTest(); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(270); for (int i = 0; i < 139; i++) { float radius = 100; float small_radius = 50; int start_deg = ofRandom(360) + ofGetFrameNum(); int small_deg_param = ofRandom(4, 10); ofColor line_color; line_color.setHsb(ofRandom(255), 239, 239); float radius_span = 0.5; int deg_span = 2; for (int deg = start_deg; deg <= start_deg + 30; deg += 2) { ofSetColor(line_color, ofMap(deg, start_deg, start_deg + 30, 32, 255)); ofPoint p1 = make_point(radius, small_radius, deg, deg * small_deg_param); ofPoint p2 = make_point(radius + radius_span, small_radius, deg + deg_span, (deg + deg_span) * small_deg_param); ofDrawLine(p1, p2); radius += radius_span; } } this->cam.end(); } //-------------------------------------------------------------- ofPoint ofApp::make_point(float radius, float small_radius, float deg, float small_deg) { float x_1 = radius * cos(deg * DEG_TO_RAD); float y_1 = radius * sin(deg * DEG_TO_RAD); float x_2 = small_radius * cos(small_deg * DEG_TO_RAD) * cos(deg * DEG_TO_RAD); float y_2 = small_radius * cos(small_deg * DEG_TO_RAD) * sin(deg * DEG_TO_RAD); float x = x_1 + x_2; float y = y_1 + y_2; float z = small_radius * sin(small_deg * DEG_TO_RAD); return ofPoint(x, y, z); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(1280, 720, OF_WINDOW); ofRunApp(new ofApp()); } |