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円の透過度を下げながらZ軸に移動しています。
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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) {}; // Make Member ofEasyCam cam; // Make Method void draw_circles(ofPoint point, ofColor color); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofBackground(239); ofSetWindowTitle("Insta"); ofNoFill(); ofSetLineWidth(3); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); this->draw_circles(ofPoint(-110, 0), ofColor(39)); ofRotateX(180); this->draw_circles(ofPoint(110, 0), ofColor(39)); this->cam.end(); } //-------------------------------------------------------------- void ofApp::draw_circles(ofPoint point, ofColor color) { // Translate Coordinate ofPushMatrix(); ofTranslate(point); // Initialize Param Variable int radius = 100; int circle_span = 20; int number_of_circle = 13; // Draw Circles for (int i = 0; i < number_of_circle; i++) { float z = i * circle_span + (int)(ofGetFrameNum() * 0.5) % circle_span; ofSetColor(color, ofMap(z, 0, circle_span * number_of_circle, 255, 0)); ofBeginShape(); for (int deg = 0; deg < 360; deg++) { float x = radius * cos(deg * DEG_TO_RAD); float y = radius * sin(deg * DEG_TO_RAD); ofVertex(x, y, z); } ofEndShape(true); } // Draw Bottom Circle ofSetColor(color, ofMap((int)(ofGetFrameNum() * 0.5) % circle_span, 0, circle_span, 0, 255)); ofBeginShape(); for (int deg = 0; deg < 360; deg++) { float x = radius * cos(deg * DEG_TO_RAD); float y = radius * sin(deg * DEG_TO_RAD); ofVertex(x, y, 0); } ofEndShape(true); ofPopMatrix(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |