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飛び出る球体
Thorn of sphere.
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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 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) {}; vector<ofMeshFace> triangles; ofEasyCam cam; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetLineWidth(2); ofEnableDepthTest(); auto ico_sphere = ofIcoSpherePrimitive(300, 2); this->triangles = ico_sphere.getMesh().getUniqueFaces(); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateY(ofGetFrameNum() * 0.8); ofRotateX(ofGetFrameNum() * 0.3); auto threshold = 0.65f; for (auto& triangle : this->triangles) { auto base_location_a = glm::vec3(triangle.getVertex(0).x, triangle.getVertex(0).y, triangle.getVertex(0).z); auto base_location_b = glm::vec3(triangle.getVertex(1).x, triangle.getVertex(1).y, triangle.getVertex(1).z); auto base_location_c = glm::vec3(triangle.getVertex(2).x, triangle.getVertex(2).y, triangle.getVertex(2).z); auto base_avg = (base_location_a + base_location_b + base_location_c) / 3; // 隣接する図形同士で重なる部分が出てくるので調整値の分だけ縮める base_location_a = (base_location_a - base_avg) * 0.95 + base_avg; base_location_b = (base_location_b - base_avg) * 0.95 + base_avg; base_location_c = (base_location_c - base_avg) * 0.95 + base_avg; auto noise_value = ofNoise(base_avg.x * 0.005, base_avg.y * 0.005, base_avg.z * 0.005, ofGetFrameNum() * 0.0025); if (noise_value >= threshold) { auto tmp_location_a = glm::normalize(base_location_a) * ofMap(noise_value, threshold, 1.0, 300, 450); auto tmp_location_b = glm::normalize(base_location_b) * ofMap(noise_value, threshold, 1.0, 300, 450); auto tmp_location_c = glm::normalize(base_location_c) * ofMap(noise_value, threshold, 1.0, 300, 450); ofFill(); ofSetColor(239); ofBeginShape(); ofVertex(tmp_location_a); ofVertex(tmp_location_b); ofVertex(tmp_location_c); ofEndShape(true); ofBeginShape(); ofVertex(base_location_a); ofVertex(base_location_b); ofVertex(tmp_location_b); ofVertex(tmp_location_a); ofEndShape(true); ofBeginShape(); ofVertex(base_location_b); ofVertex(base_location_c); ofVertex(tmp_location_c); ofVertex(tmp_location_b); ofEndShape(true); ofBeginShape(); ofVertex(base_location_c); ofVertex(base_location_a); ofVertex(tmp_location_a); ofVertex(tmp_location_c); ofEndShape(true); ofNoFill(); ofSetColor(39); ofBeginShape(); ofVertex(tmp_location_a); ofVertex(tmp_location_b); ofVertex(tmp_location_c); ofEndShape(true); ofBeginShape(); ofVertex(base_location_a); ofVertex(base_location_b); ofVertex(tmp_location_b); ofVertex(tmp_location_a); ofEndShape(true); ofBeginShape(); ofVertex(base_location_b); ofVertex(base_location_c); ofVertex(tmp_location_c); ofVertex(tmp_location_b); ofEndShape(true); ofBeginShape(); ofVertex(base_location_c); ofVertex(base_location_a); ofVertex(tmp_location_a); ofVertex(tmp_location_c); ofEndShape(true); } else { ofFill(); ofSetColor(239); ofBeginShape(); ofVertex(base_location_a); ofVertex(base_location_b); ofVertex(base_location_c); ofEndShape(true); ofNoFill(); ofSetColor(39); ofBeginShape(); ofVertex(base_location_a); ofVertex(base_location_b); ofVertex(base_location_c); ofEndShape(true); } } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |