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色正方形。
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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 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) {}; float len; vector<glm::vec2> start_location_list; vector<vector<glm::vec2>> location_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openframeworks"); ofBackground(39); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); ofSetLineWidth(2); this->len = 10; for (float x = this->len * 10; x <= ofGetWidth() - this->len * 10; x += this->len) { for (float y = this->len * 10; y <= ofGetHeight() - this->len * 10; y += this->len) { this->start_location_list.push_back(glm::vec3(x, y, 0)); } } for (int i = 0; i < 24; i++) { int r = ofRandom(this->start_location_list.size()); auto log_list = vector<glm::vec2>(); log_list.push_back(this->start_location_list[r]); this->location_list.push_back(log_list); } } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); if (ofGetFrameNum() % 1 == 0) { int i = 0; for (auto& log_list : this->location_list) { auto noise_param = ofRandom(1000); int r = ofMap(ofNoise(noise_param, ofGetFrameNum() * 0.05), 0, 1, i, i + 4); int deg_start = r * 90; for (int deg = deg_start; deg < deg_start + 360; deg += 90) { auto tmp_location = log_list.back() + glm::vec2(this->len * cos(deg * DEG_TO_RAD), this->len * sin(deg * DEG_TO_RAD)); if (tmp_location.x < this->len * 10 || tmp_location.x > ofGetWidth() - this->len * 10 || tmp_location.y < this->len * 10 || tmp_location.y > ofGetHeight() - this->len * 10) { continue; } bool flag = false; for (int i = 0; i < log_list.size(); i++) { if (tmp_location == log_list[i] && deg_start != deg && deg_start % 360 == deg % 360) { flag = true; break; } } if (flag) { continue; } log_list.push_back(tmp_location); break; } while (log_list.size() > 100) { log_list.erase(log_list.begin()); } i++; } } } //-------------------------------------------------------------- void ofApp::draw() { ofColor color; int index = 0; for (auto& log_list : this->location_list) { color.setHsb(ofMap(index, 0, this->location_list.size(), 0, 255), 230, 255); for (int i = 1; i < log_list.size(); i++) { ofSetColor(color, ofMap(i, 1, log_list.size(), 0, 255)); ofDrawLine(log_list[i], log_list[i - 1]); } index++; } /* int start = 150; 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); } } */ } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |