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4色あわあわ。
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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(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetLineWidth(1); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_SUBTRACT); } //-------------------------------------------------------------- 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 < 60; i++) { int deg = (int)(ofGetFrameNum() + (i % 4) * 90) % 360; int radius = ofRandom(600); color.setHsb((int)(ofMap(i % 4, 0, 4, 0, 255) + ofRandom(64)) % 255, 255, 255); auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)); this->location_list.push_back(location); this->radius_list.push_back(1); this->speed_list.push_back(ofRandom(0.2, 2.5)); this->max_radius_list.push_back(ofRandom(5, ofMap(radius, 0, 600, 10, 60))); 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]); 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()); } |