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カラフル・ヒトデ。
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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | #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<glm::vec2> velocity_list; 	vector<float> speed_list; 	vector<float> life_list; 	vector<ofColor> color_list; }; | 
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 | #include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { 	ofSetFrameRate(25); 	ofSetWindowTitle("openframeworks"); 	ofBackground(239); 	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_SUBTRACT); } //-------------------------------------------------------------- void ofApp::update() { 	ofColor color; 	for (int i = 0; i < 500; i++) { 		auto deg = ofRandom(360); 		auto location = glm::vec2(30 * cos(deg * DEG_TO_RAD), 30 * sin(deg * DEG_TO_RAD)); 		this->location_list.push_back(location); 		auto next = glm::vec2(31 * cos((deg + 1) * DEG_TO_RAD), 31 * sin((deg + 1) * DEG_TO_RAD)); 		this->velocity_list.push_back(next - location); 		color.setHsb(ofMap(deg, 0, 360, 0, 255), 200, 255); 		this->color_list.push_back(color); 		this->speed_list.push_back(ofRandom(2, 6)); 		this->life_list.push_back(80); 	} 	for (int i = this->location_list.size() - 1; i >= 0; i--) { 		auto fueture = glm::normalize(this->velocity_list[i]) * 45; 		auto deg = ofMap(ofNoise(glm::vec3(this->location_list[i] * 0.01, ofGetFrameNum() * 0.001)), 0, 1, -360, 360); 		fueture = fueture + glm::vec2(10 * cos(deg * DEG_TO_RAD), 10 * sin(deg * DEG_TO_RAD)); 		this->location_list[i] += glm::normalize(fueture) * this->speed_list[i]; 		this->life_list[i] -= 1; 		if (this->life_list[i] < 0) { 			this->location_list.erase(this->location_list.begin() + i); 			this->velocity_list.erase(this->velocity_list.begin() + i); 			this->speed_list.erase(this->speed_list.begin() + i); 			this->life_list.erase(this->life_list.begin() + i); 			this->color_list.erase(this->color_list.begin() + i); 		} 	} } //-------------------------------------------------------------- void ofApp::draw() { 	ofTranslate(ofGetWindowSize() * 0.5); 	for (int i = 0; i < this->location_list.size(); i++) { 		ofSetColor(this->color_list[i], ofMap(this->life_list[i], 0, 80, 0, 255)); 		ofDrawCircle(this->location_list[i], 3); 	} 	/* 	// ffmpeg -i img_%04d.jpg aaa.mp4 	int start = 150; 	if (ofGetFrameNum() > start) { 		std::ostringstream os; 		os << std::setw(4) << std::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()); } | 
[ Link ]
https://github.com/junkiyoshi/DoodleDeProgramming/tree/09d0c9c16c8bdccda9b3a9f9bcc4457b35316fb5