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色の烈。
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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> 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(0); ofSetCircleResolution(36); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { for (int i = this->location_list.size() - 1; i >= 0; i--) { this->radius_list[i] += this->speed_list[i]; 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 < 100; i++) { int y = (int)(ofGetFrameNum() * 5 + (i % 2) * 360) % 720 - 360; int x = ofRandom(-300, 300); color.setHsb(ofMap((int)(x + 300 + ofRandom(100)) % 300, 0, 300, 0, 255), 180, 255); auto location = glm::vec2(x, y); this->location_list.push_back(location); this->radius_list.push_back(1); this->speed_list.push_back(ofRandom(0.5, 2.5)); this->max_radius_list.push_back(ofRandom(5, ofRandom(10, 30))); this->color_list.push_back(color); } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); for (int i = 0; i < this->location_list.size(); i++) { ofNoFill(); ofSetColor(this->color_list[i], this->radius_list[i] < this->max_radius_list[i] * 0.5 ? 255 : ofMap(this->radius_list[i], this->max_radius_list[i] * 0.5, this->max_radius_list[i], 255, 30)); ofDrawCircle(this->location_list[i], this->radius_list[i]); ofFill(); ofSetColor(this->color_list[i], ofMap(this->radius_list[i], 1, this->max_radius_list[i], 255, 30)); ofDrawCircle(this->location_list[i], this->radius_list[i]); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |