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球体を包む。
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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(25); ofSetWindowTitle("openFrameworks"); ofBackground(0); ofSetColor(0); ofEnableDepthTest(); auto ico_sphere = ofIcoSpherePrimitive(140, 7); for (int x = -160; x <= 160; x += 320) { for (int y = -160; y <= 160; y += 320) { int start_index = this->mesh.getNumVertices(); for (int i = 0; i < ico_sphere.getMeshPtr()->getNumVertices(); i++) { this->mesh.addVertex(ico_sphere.getMeshPtr()->getVertex(i) + glm::vec3(x, y, 0)); this->mesh.addColor(ofColor(0)); } for (int i = 0; i < ico_sphere.getMeshPtr()->getNumIndices(); i++) { this->mesh.addIndex(start_index + ico_sphere.getMeshPtr()->getIndex(i)); } } } } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->mesh.clearColors(); auto noise_param = 0.00065; ofColor color; for (int i = 0; i < this->mesh.getNumVertices(); i++) { auto noise_value = ofMap(ofNoise( this->mesh.getVertex(i).x * noise_param, this->mesh.getVertex(i).y * noise_param, ofGetFrameNum() * 0.005), 0, 1, 0, 20); color.setHsb(ofMap(noise_value > 10 ? noise_value - 10 : noise_value, 0, 10, 0, 255), 150, 255); int int_noise_value = (int)noise_value; noise_value = noise_value - int_noise_value; auto alpha = abs(noise_value - 0.5) < 0.35 ? 0 : ofMap(abs(noise_value - 0.5), 0.35, 0.5, 0, 255); color = ofColor(color, alpha); this->mesh.addColor(color); } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); for (int x = -160; x <= 160; x += 320) { for (int y = -160; y <= 160; y += 320) { ofDrawSphere(glm::vec3(x, y, 0), 139); } } this->mesh.drawFaces(); this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |