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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); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openframeworks"); ofBackground(39); ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); ofNoFill(); ofSetLineWidth(1); ofSetColor(255); ofDrawRectangle(glm::vec2(), 600, 600); ofDrawRectangle(glm::vec2(), 400, 400); ofDrawRectangle(glm::vec2(), 200, 200); auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000)); ofFill(); ofSetLineWidth(2.5); ofColor color; for (int param = 500; param < 600; param += 2) { color.setHsb(ofMap(param, 500, 600, 0, 255), 255, 255); ofSetColor(color); auto location = this->make_point(600, param); auto target_param = param + ofMap(ofNoise(600 + noise_seed.x + ofGetFrameNum() * 0.005), 0, 1, -500, 500); auto target = this->make_point(400, target_param); auto next_target_param = param + ofMap(400 + noise_seed.x + ofNoise(ofGetFrameNum() * 0.005), 0, 1, -500, 500); auto next_target = this->make_point(200, next_target_param); ofDrawLine(location, target); ofDrawLine(target, next_target); ofDrawCircle(location, 4); ofDrawCircle(target, 3); ofDrawCircle(next_target, 2); } /* int start = 125; 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()); } |