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円の形状のZ軸をNoise関数でズラしています。王冠のような形になりますが真横から見ているので、二次元に見えたり時たま三次元に見えます。
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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) {} // Make Member ofEasyCam cam; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofBackground(39); ofSetWindowTitle("Insta"); ofNoFill(); ofSetColor(239); ofSetLineWidth(1.5); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(90); float radius = 300; ofBeginShape(); for (int deg = 0; deg < 360; deg += 1) { float x = radius * cos(deg * DEG_TO_RAD); float y = radius * sin(deg * DEG_TO_RAD); float noise_value = ofNoise(x * 0.005, y * 0.005, ofGetFrameNum() * 0.008); int z = noise_value * 10 + 1; z = z * 40 - 180; ofVertex(x, y, z); } ofEndShape(true); this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |