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球体と近づくと面が消える球体
Sphere deleter.
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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) {}; vector<ofMeshFace> triangles; ofEasyCam cam; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetColor(39); ofNoFill(); ofSetLineWidth(1.5); ofEnableDepthTest(); auto ico_sphere = ofIcoSpherePrimitive(150, 2); this->triangles = ico_sphere.getMesh().getUniqueFaces(); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateY(ofGetFrameNum()); vector<glm::vec3> noise_locations; for (int i = 0; i < 3; i++) { noise_locations.push_back(glm::vec3(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01), 0, 1, -500, 500), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01), 0, 1, -500, 500), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01), 0, 1, -200, 200))); } for (int x = -400; x <= 400; x += 400) { for (int y = -400; y <= 400; y += 400) { for(auto& triangle : this->triangles){ auto avg_location = glm::vec3(); vector<glm::vec3> vertices; for (int j = 0; j < 3; j++) { glm::vec3 location(x + triangle.getVertex(j).x, y + triangle.getVertex(j).y, triangle.getVertex(j).z); vertices.push_back(location); avg_location += location; } avg_location /= 3; bool draw_flag = true; for (auto& noise_location : noise_locations) { float distance = glm::distance(noise_location, avg_location); if (distance < 200) { draw_flag = false; break; } } if (draw_flag) { ofFill(); ofSetColor(39); ofBeginShape(); ofVertices(vertices); ofEndShape(true); ofNoFill(); ofSetColor(239); ofBeginShape(); ofVertices(vertices); ofEndShape(true); } } } } ofSetColor(39); for (auto& noise_location : noise_locations) { ofDrawSphere(noise_location, 10); } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |