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undulation.
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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) {}; ofEasyCam cam; vector<glm::vec3> base_location_list; vector<ofColor> base_color_list; vector<vector<glm::vec3>> log_list; vector<ofColor> color_list; vector<float> life_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(0); ofNoFill(); ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); ofColor color; for (int hue = 0; hue < 256; hue += 16) { color.setHsb(hue, 255, 180); this->base_color_list.push_back(color); } for (int base_x = -250; base_x <= 250; base_x += 500) { for (int base_y = -250; base_y <= 250; base_y += 500) { for (int x = -200; x <= 200; x += 1) { for (int y = -200; y <= 200; y += 1) { this->base_location_list.push_back(glm::vec3(base_x + x, base_y + y, 0)); } } } } } //-------------------------------------------------------------- void ofApp::update() { int radius = 3; while (this->log_list.size() < 3000) { int font_location_index = ofRandom(this->base_location_list.size()); vector<glm::vec3> log; log.push_back(this->base_location_list[font_location_index]); this->log_list.push_back(log); this->color_list.push_back(this->base_color_list[(int)ofRandom(this->base_color_list.size())]); this->life_list.push_back(ofRandom(80, 150)); } for (int i = this->log_list.size() - 1; i >= 0; i--) { this->life_list[i] -= 1; if (this->life_list[i] < 0) { this->log_list.erase(this->log_list.begin() + i); this->color_list.erase(this->color_list.begin() + i); this->life_list.erase(this->life_list.begin() + i); continue; } auto deg = ofMap(ofNoise(glm::vec4(this->log_list[i].back() * 0.0015, ofGetFrameNum() * 0.001)), 0, 1, -360, 360); this->log_list[i].push_back(this->log_list[i].back() + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0)); } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); for (int i = 0; i < this->log_list.size(); i++) { ofSetColor(this->color_list[i]); if (this->life_list[i] > 30) { ofSetLineWidth(2); } else { ofSetLineWidth(ofMap(this->life_list[i], 0, 30, 0, 2)); } ofSetColor(this->color_list[i]); ofBeginShape(); ofVertices(this->log_list[i]); ofEndShape(); } ofSetColor(255); ofSetLineWidth(2); for (int base_x = -250; base_x <= 250; base_x += 500) { for (int base_y = -250; base_y <= 250; base_y += 500) { ofDrawRectangle(glm::vec3(base_x, base_y, 0), 400, 400); } } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |