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トーラスの中を3色のSphereが巡回していて、Sphere周辺の辺だけがその色で描写されています。一つだけだと寂しかったので、二つ重ねてみました。
[ Source ]
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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) {}; 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"); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); ofSetLineWidth(1.5); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); float radius = 300; vector<ofColor> colors = {ofColor(239, 39, 39), ofColor(39, 239, 39), ofColor(39, 39, 239)}; for (int loop = 0; loop < 2; loop++) { ofRotateX(loop * 90); for (int i = 0; i < colors.size(); i++) { float sphere_deg = (360 / colors.size()) * i + ofGetFrameNum(); ofPoint sphere_point = ofPoint(radius * cos(sphere_deg * DEG_TO_RAD), radius * sin(sphere_deg * DEG_TO_RAD)); ofFill(); ofSetColor(colors[i]); ofDrawSphere(sphere_point, 5); int deg_span = 5; for (int deg = 0; deg < 360; deg += deg_span) { int small_deg_span = 5; float small_radius = 80; vector<ofPoint> vertices; for (int small_deg = 0; small_deg < 360; small_deg += small_deg_span) { ofPoint point = make_point(radius, small_radius, deg, small_deg); float distance = sphere_point.distance(point); ofSetColor(colors[i], ofMap(distance, 0, 250, 255, 0)); if (distance < 250) { vertices.push_back(point); ofPoint next_point = make_point(radius, small_radius, deg + deg_span, small_deg); ofDrawLine(point, next_point); } } ofNoFill(); ofBeginShape(); ofVertices(vertices); ofEndShape(true); } } } 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(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |