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IcoSphereから面情報を取得、フレーム数をパラメータにバラバラにする。
Getting mesh from IcoSphere. Changing radius by frame count.
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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(150, 2); this->triangles = ico_sphere.getMesh().getUniqueFaces(); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateY(ofGetFrameNum() * 0.5); for (auto& triangle : this->triangles) { auto avg = glm::vec3(triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3; auto param = (int)(ofRandom(750) + ofGetFrameNum()) % 750; auto tmp_radius = 150; auto rotate = 0; auto alpha = 255.f; if (param > 600) { tmp_radius = ofMap(param, 600, 750, 150, 300); rotate = ofMap(param, 600, 750, 0, 360); alpha = rotate = ofMap(param, 600, 750, 255, 0); } else if (param < 150) { alpha = ofMap(param, 0, 150, 0, 255); } auto tmp_avg = glm::normalize(avg) * tmp_radius; ofPushMatrix(); ofTranslate(tmp_avg); ofRotateX(rotate); ofRotateY(rotate); vector<glm::vec3> vertices; vector<glm::vec3> fill_vertices; for (int j = 0; j < 3; j++) { glm::vec3 location = glm::vec3(triangle.getVertex(j).x, triangle.getVertex(j).y, triangle.getVertex(j).z) - avg; vertices.push_back(location); fill_vertices.push_back(location * 0.98); } ofFill(); ofSetColor(239, alpha); ofBeginShape(); ofVertices(fill_vertices); ofEndShape(true); ofNoFill(); ofSetColor(39, alpha); ofBeginShape(); ofVertices(vertices); ofEndShape(true); ofPopMatrix(); } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |