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サークルパッキング＆グラデーション。
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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) {}; float random_seed; vector<glm::vec2> location_list; vector<float> radus_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openframeworks"); ofBackground(0); ofNoFill(); this->random_seed = ofRandom(1000); } //-------------------------------------------------------------- void ofApp::update() { if (ofGetFrameNum() % 60 < 5) { this->random_seed = ofRandom(1000); } ofSeedRandom(this->random_seed); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); auto number_of_sphere = 180; vector<glm::vec2> location_list; vector<float> radius_list; while (location_list.size() < number_of_sphere) { auto location = glm::vec2(ofRandom(-300, 300), ofRandom(-300, 300)); auto radius = ofRandom(8, 70); bool flag = true; for (int i = 0; i < location_list.size(); i++) { if (glm::distance(location, location_list[i]) < (radius + radius_list[i])) { flag = false; break; } } if (flag) { location_list.push_back(location); radius_list.push_back(radius); } } int count = 0; while (true) { auto all = true; for (int i = 0; i < location_list.size(); i++) { auto flag = true; for (int k = 0; k < location_list.size(); k++) { if (i == k) { continue; } if (glm::distance(location_list[i], location_list[k]) < (radius_list[i] + radius_list[k])) { flag = false; } } if (flag) { radius_list[i] += 1; all = false; break; } } if (all) { break; } count++; } ofColor color; int color_param = ofRandom(1000); int deg_span = 3; for (int i = 0; i < location_list.size(); i++) { ofMesh mesh; auto param = ofGetFrameNum() % 60 < 5 ? 0.2 : ofGetFrameNum() % 60 < 15 ? ofMap(ofGetFrameNum() % 60, 5, 15, 0.2, 1) : 1; auto len = ofMap(param, 0.2, 1, 1, 5); for (int deg = 0; deg < 360; deg += deg_span) { mesh.addVertex(glm::vec3(location_list[i], 0) + glm::vec3(radius_list[i] * param * cos(deg * DEG_TO_RAD), radius_list[i] * param * sin(deg * DEG_TO_RAD), 0)); mesh.addVertex(glm::vec3(location_list[i], 0) + glm::vec3(radius_list[i] * param * cos((deg + deg_span) * DEG_TO_RAD), radius_list[i] * param * sin((deg + deg_span) * DEG_TO_RAD), 0)); mesh.addVertex(glm::vec3(location_list[i], 0) + glm::vec3((radius_list[i] * param - len) * cos((deg + deg_span) * DEG_TO_RAD), (radius_list[i] * param - len) * sin((deg + deg_span) * DEG_TO_RAD), 0)); mesh.addVertex(glm::vec3(location_list[i], 0) + glm::vec3((radius_list[i] * param - len) * cos(deg * DEG_TO_RAD), (radius_list[i] * param - len) * sin(deg * DEG_TO_RAD), 0)); mesh.addIndex(mesh.getNumVertices() - 1); mesh.addIndex(mesh.getNumVertices() - 2); mesh.addIndex(mesh.getNumVertices() - 3); mesh.addIndex(mesh.getNumVertices() - 1); mesh.addIndex(mesh.getNumVertices() - 3); mesh.addIndex(mesh.getNumVertices() - 4); } for (int k = 0; k < mesh.getNumVertices(); k++) { auto vertex = mesh.getVertex(k); color.setHsb((int)ofMap(ofNoise(glm::vec4(color_param, vertex * 0.0025)), 0, 1, 180, 280) % 255, 200, 255); mesh.addColor(color); } mesh.draw(); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |