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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) {}; vector<glm::vec2> noise_seed_list; vector<glm::vec2> location_list; vector<float> radius_list; vector<float> speed_list; vector<float> max_radius_list; vector<ofColor> color_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openframeworks"); ofBackground(39); ofSetLineWidth(2); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); for (int i = 0; i < 8; i++) { this->noise_seed_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000))); } } //-------------------------------------------------------------- void ofApp::update() { for (int i = this->location_list.size() - 1; i >= 0; i--) { if (this->radius_list[i] > 0) { this->radius_list[i] += this->speed_list[i] * 2; } else { this->radius_list[i] += this->speed_list[i] * 60; } if (this->radius_list[i] > this->max_radius_list[i]) { this->location_list.erase(this->location_list.begin() + i); this->radius_list.erase(this->radius_list.begin() + i); this->speed_list.erase(this->speed_list.begin() + i); this->max_radius_list.erase(this->max_radius_list.begin() + i); this->color_list.erase(this->color_list.begin() + i); } } ofColor color; for (int i = 0; i < this->noise_seed_list.size(); i++) { auto noise_location = glm::vec2( ofMap(ofNoise(this->noise_seed_list[i].x, ofGetFrameNum() * 0.005), 0, 1, -400, 400), ofMap(ofNoise(this->noise_seed_list[i].y, ofGetFrameNum() * 0.005), 0, 1, -400, 400)); auto location = noise_location + glm::vec2(ofRandom(-30, 30), ofRandom(-30, 30)); this->location_list.push_back(location); this->radius_list.push_back(ofRandom(-600, -300)); this->speed_list.push_back(ofRandom(0.3, 0.5)); this->max_radius_list.push_back(ofRandom(15, 40)); auto span = 360 / this->noise_seed_list.size(); auto random_start = i * span; auto random_end = i * span + span; color.setHsb(ofRandom(random_start, random_end), 200, 255); this->color_list.push_back(color); } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); for (int i = 0; i < this->location_list.size(); i++) { if (this->radius_list[i] > 0) { auto alpha = this->radius_list[i] < this->max_radius_list[i] * 0.8 ? 255 : ofMap(this->radius_list[i], this->max_radius_list[i] * 0.8, this->max_radius_list[i], 255, 64); ofSetColor(this->color_list[i], alpha); ofNoFill(); ofDrawCircle(this->location_list[i], this->radius_list[i]); ofSetColor(this->color_list[i], 64); ofFill(); ofDrawCircle(this->location_list[i], this->radius_list[i]); } else { /* auto alpha = ofMap(this->radius_list[i], -600, 0, 64, 255); ofSetColor(this->color_list[i], alpha); ofNoFill(); ofDrawLine(glm::vec3(this->location_list[i], this->radius_list[i]), glm::vec3(this->location_list[i], this->radius_list[i] - 60)); */ } } /* int start = 500; if (ofGetFrameNum() > start) { ostringstream os; os << setw(4) << setfill('0') << ofGetFrameNum() - start; ofImage image; image.grabScreen(0, 0, ofGetWidth(), ofGetHeight()); image.saveImage("image/cap/img_" + os.str() + ".jpg"); if (ofGetFrameNum() - start >= 25 * 20) { std::exit(1); } } */ } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |