[ Video ]
[ About ]
Arrow train.
[ Source ]
| 
					 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22  | 
						#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) {}; 	void draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor color); };  | 
					
| 
					 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  | 
						#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { 	ofSetFrameRate(60); 	ofSetWindowTitle("openframeworks"); 	ofBackground(239); 	ofSetColor(39); 	ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { 	ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { 	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); 	for (int i = 0; i < 1; i++) { 		auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000)); 		for (int k = 0; k < 30; k++) { 			auto location = glm::vec2(ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * 0.008 + k * 0.08), 0, 1, -300, 300), ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * 0.008 + k * 0.08), 0, 1, -300, 300)); 			auto next = glm::vec2(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + 1) * 0.008 + k * 0.08), 0, 1, -300, 300), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + 1) * 0.008 + k * 0.08), 0, 1, -300, 300)); 			ofColor color = k < 15 ? ofColor(ofMap(k, 0, 15, 239, 39)) : ofColor(39); 			this->draw_arrow(location, next, 30, color); 		} 	} } //-------------------------------------------------------------- void ofApp::draw_arrow(glm::vec2 location, glm::vec2 next_location, float size, ofColor color) { 	auto angle = std::atan2(next_location.y - location.y, next_location.x - location.x); 	ofSetColor(color); 	ofFill(); 	ofBeginShape(); 	ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle))); 	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5))); 	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5))); 	ofEndShape(); 	ofBeginShape(); 	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25); 	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5); 	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5); 	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25); 	ofEndShape(); 	ofSetColor(239); 	ofNoFill(); 	ofBeginShape(); 	ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle))); 	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5))); 	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5))); 	ofEndShape(); 	ofBeginShape(); 	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25); 	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5); 	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5); 	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25); 	ofEndShape(); } //-------------------------------------------------------------- int main() { 	ofSetupOpenGL(720, 720, OF_WINDOW); 	ofRunApp(new ofApp()); }  |