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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) {}; glm::vec2 make_point(int len, int param); int span; vector<glm::vec2> location_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetColor(39); ofSetLineWidth(3); ofSetCircleResolution(36); this->span = 30; for (auto x = 0; x <= ofGetWidth(); x += this->span) { for (int y = 0; y <= ofGetHeight(); y += this->span) { this->location_list.push_back(glm::vec2(x, y)); } } } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { for (int i = 0; i < this->location_list.size(); i++) { ofPushMatrix(); ofTranslate(this->location_list[i]); auto noise_value = ofNoise(glm::vec3(this->location_list[i] * 0.0025, ofGetFrameNum() * 0.005)); auto start_param = noise_value < 0.51 ? (noise_value < 0.49 ? 0 : ofMap(noise_value, 0.49, 0.51, 0, 25)) : 25; auto start = this->make_point(this->span, start_param); auto end = this->make_point(this->span, start_param + 50); ofDrawLine(start, end); ofDrawCircle(start, 4); ofDrawCircle(end, 4); ofPopMatrix(); } /* int start = 100; if (ofGetFrameNum() > start) { ostringstream os; os << setw(4) << 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); } } */ } //-------------------------------------------------------------- glm::vec2 ofApp::make_point(int len, int param) { param = param % 100; if (param < 25) { return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5); } else if (param < 50) { return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5)); } else if (param < 75) { return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5); } else { return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5)); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |