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IcoSphereクラスから取得できる座標を変形させて遊んでいます。球体を構成する三角形(面)情報が取得できるので、中心座標を計算・図形で結んで、出っ張りを描写しています。
球体の半径を変化させているので、球体とトゲトゲの形に変形するのが楽しいですね。
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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; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofBackground(239); ofSetWindowTitle("Insta"); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(ofGetFrameNum() * 0.1); ofRotateY(ofGetFrameNum() * 0.25); float radius = 400 * ofNoise(ofGetFrameNum() * 0.01); ofIcoSpherePrimitive ico_sphere = ofIcoSpherePrimitive(radius , 2); vector<ofMeshFace> triangles = ico_sphere.getMesh().getUniqueFaces(); for (int i = 0; i < triangles.size(); i++) { ofPoint average = (triangles[i].getVertex(0) + triangles[i].getVertex(1) + triangles[i].getVertex(2)) / 3; average = average.normalized() * 240; ofFill(); ofSetColor(239); ofBeginShape(); ofVertex(triangles[i].getVertex(0).x, triangles[i].getVertex(0).y, triangles[i].getVertex(0).z); ofVertex(triangles[i].getVertex(1).x, triangles[i].getVertex(1).y, triangles[i].getVertex(1).z); ofVertex(triangles[i].getVertex(2).x, triangles[i].getVertex(2).y, triangles[i].getVertex(2).z); ofEndShape(true); for (int v = 0; v < 3; v++) { ofFill(); ofSetColor(239); ofBeginShape(); ofVertex(average); ofVertex(triangles[i].getVertex(v).x, triangles[i].getVertex(v).y, triangles[i].getVertex(v).z); ofVertex(triangles[i].getVertex((v + 1) % 3).x, triangles[i].getVertex((v + 1) % 3).y, triangles[i].getVertex((v + 1) % 3).z); ofEndShape(true); ofNoFill(); ofSetColor(39, 198); ofBeginShape(); ofVertex(average); ofVertex(triangles[i].getVertex(v).x, triangles[i].getVertex(v).y, triangles[i].getVertex(v).z); ofVertex(triangles[i].getVertex((v + 1) % 3).x, triangles[i].getVertex((v + 1) % 3).y, triangles[i].getVertex((v + 1) % 3).z); ofEndShape(true); } } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |