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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) {}; glm::vec3 make_point(float R, float r, float u, float v); glm::vec2 make_point(float theta); ofEasyCam cam; vector<glm::vec3> base_location_list; vector<tuple<ofColor, glm::vec3, float>> sphere_list; // BodyColor, Location, size int number_of_sphere; float random_seed; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openFrameworks"); ofBackground(0); ofSetLineWidth(3); ofEnableDepthTest(); auto ico_sphere = ofIcoSpherePrimitive(1, 5); this->number_of_sphere = 350; while (this->sphere_list.size() < this->number_of_sphere) { auto tmp_location = this->make_point(300, ofRandom(0, 60), ofRandom(360), ofRandom(360)); auto radius = this->sphere_list.size() < 110 ? ofRandom(20, 60) : ofRandom(2, 20); bool flag = true; for (int i = 0; i < this->sphere_list.size(); i++) { if (glm::distance(tmp_location, get<1>(this->sphere_list[i])) < get<2>(this->sphere_list[i]) + radius) { flag = false; break; } } if (flag) { ofColor color; color.setHsb(ofRandom(255), 200, 255); auto size = (radius * 2) / sqrt(3); this->sphere_list.push_back(make_tuple(color, tmp_location, size)); } } this->random_seed = 39; } //-------------------------------------------------------------- void ofApp::update() { if (ofGetFrameNum() % 60 == 0) { this->random_seed = ofRandom(1000); } ofSeedRandom(this->random_seed); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateZ(ofGetFrameNum() * 0.66666666666666666); for (int i = 0; i < this->sphere_list.size(); i++) { auto location = get<1>(this->sphere_list[i]); auto size = get<2>(this->sphere_list[i]); ofPushMatrix(); ofTranslate(location); ofRotateZ(ofRandom(360)); ofRotateY(ofRandom(360)); ofRotateX(ofRandom(360)); ofColor color; color.setHsb(ofRandom(255), 255, 255); auto param = ofGetFrameNum() % 60; float scale = 1; if (param < 30) { scale = ofMap(param, 0, 30, 0, size); } else { scale = ofMap(param, 30, 60, size, 0); } vector<glm::vec2> vertices; for (int deg = 0; deg < 360; deg += 1) { vertices.push_back(this->make_point(deg * DEG_TO_RAD) / 20 * scale); } ofFill(); ofSetColor(color, 128); ofBeginShape(); ofVertices(vertices); ofEndShape(true); ofNoFill(); ofSetColor(color); ofBeginShape(); ofVertices(vertices); ofEndShape(true); ofPopMatrix(); } this->cam.end(); } //-------------------------------------------------------------- glm::vec3 ofApp::make_point(float R, float r, float u, float v) { // 数学デッサン教室 描いて楽しむ数学たち P.31 u *= DEG_TO_RAD; v *= DEG_TO_RAD; auto x = (R + r * cos(u)) * cos(v); auto y = (R + r * cos(u)) * sin(v); auto z = r * sin(u); return glm::vec3(x, y, z); } //-------------------------------------------------------------- //Reference by https://twitter.com/shiffman/status/1095764239665512453 glm::vec2 ofApp::make_point(float theta) { float x = 16 * (pow(sin(theta), 3)); float y = 13 * cos(theta) - 5 * cos(2 * theta) - 2 * cos(3 * theta) - cos(4 * theta); return glm::vec2(x, -y); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |