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正八面体。
Regular octahedron.
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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; ofMesh mesh; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofEnableDepthTest(); this->mesh.addVertex(glm::vec3(0, 50, 0)); this->mesh.addVertex(glm::vec3(-50, 0, 0)); this->mesh.addVertex(glm::vec3(0, 0, -50)); this->mesh.addVertex(glm::vec3(50, 0, 0)); this->mesh.addVertex(glm::vec3(0, 0, 50)); this->mesh.addVertex(glm::vec3(0, -50, 0)); this->mesh.addIndex(0); this->mesh.addIndex(1); this->mesh.addIndex(2); this->mesh.addIndex(0); this->mesh.addIndex(2); this->mesh.addIndex(3); this->mesh.addIndex(0); this->mesh.addIndex(3); this->mesh.addIndex(4); this->mesh.addIndex(0); this->mesh.addIndex(4); this->mesh.addIndex(1); this->mesh.addIndex(5); this->mesh.addIndex(1); this->mesh.addIndex(2); this->mesh.addIndex(5); this->mesh.addIndex(2); this->mesh.addIndex(3); this->mesh.addIndex(5); this->mesh.addIndex(3); this->mesh.addIndex(4); this->mesh.addIndex(5); this->mesh.addIndex(4); this->mesh.addIndex(1); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofColor color_0, color_1, color_2; for (auto x = ofGetWidth() * -0.5; x <= ofGetWidth() * 0.5; x += 120) { for (auto y = ofGetHeight() * -0.5; y <= ofGetHeight() * 0.5; y += 120) { auto hue = ofMap(y, ofGetHeight() * 0.5, ofGetHeight() * -0.5, 0, 240); color_0.setHsb(255, 0, 255); color_1.setHsb(hue, 255, 128); color_2.setHsb(hue, 255, 230); this->mesh.clearColors(); this->mesh.addColor(color_1); for (int i = 0; i < 4; i++) { this->mesh.addColor(color_2); } this->mesh.addColor(color_1); ofPushMatrix(); ofTranslate(x, y); ofRotateY(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 0, 360)); ofRotateX(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 0, 360)); this->mesh.drawFaces(); this->mesh.clearColors(); for (int i = 0; i < 6; i++) { this->mesh.addColor(color_0); } this->mesh.drawWireframe(); ofPopMatrix(); } } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |