[ Video ]
[ About ]
線をつなぐ。
[ Source ]
|
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 |
#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 mouseEntered(int x, int y) {}; void mouseExited(int x, int y) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; ofMesh mesh; glm::vec2 base_seed; vector<vector<glm::vec2>> log_list; vector<glm::vec2> velocity_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 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 |
#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openframeworks"); ofBackground(0); ofSetLineWidth(3); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); this->base_seed = glm::vec2(ofRandom(1000), ofRandom(1000)); } //-------------------------------------------------------------- void ofApp::update() { this->mesh.clear(); int span = 20; int radius = 90; ofColor color; while (this->log_list.size() < 18) { int deg_base = ofRandom(360); int deg = deg_base / 24 * 24; vector<glm::vec2> log; auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)); log.push_back(location); auto next = glm::vec2((radius - 10) * cos(deg * DEG_TO_RAD), (radius - 10) * sin(deg * DEG_TO_RAD)); auto distance = location - next; distance *= 2; auto future = location + distance * 30; auto random_deg = ofRandom(360); future += glm::vec2(120 * cos(random_deg * DEG_TO_RAD), 120 * sin(random_deg * DEG_TO_RAD)); auto future_distance = future - location; this->log_list.push_back(log); this->velocity_list.push_back(glm::normalize(future_distance) * glm::length(distance) * ofRandom(0.25, 0.6)); color.setHsb(ofRandom(255), 180, 255); this->color_list.push_back(color); } for (int i = this->log_list.size() - 1; i > -1; i--) { auto location = this->log_list[i][this->log_list[i].size() - 1]; location += this->velocity_list[i]; this->log_list[i].push_back(location); this->velocity_list[i] *= 1.01; if (glm::length(location) > 800) { this->log_list.erase(this->log_list.begin() + i); this->velocity_list.erase(this->velocity_list.begin() + i); this->color_list.erase(this->color_list.begin() + i); continue; } else if (glm::length(location) > 700) { this->color_list[i] = ofColor(this->color_list[i], ofMap(glm::length(location), 700, 800, 255, 0)); } } for (int i = 0; i < this->log_list.size(); i++) { int start_index = this->mesh.getNumVertices() - 1; for (int k = 0; k < this->log_list[i].size(); k++) { this->mesh.addVertex(glm::vec3(this->log_list[i][k], 0)); this->mesh.addColor(this->color_list[i]); if (k > 0) { this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); } } if (i > 0) { this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(start_index); } } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); this->mesh.drawWireframe(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |