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ランダム・ウォーク・虫。
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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) {}; vector<vector<glm::vec2>> log_list; vector<glm::vec3> seed_list; vector<glm::vec2> velocity_list; vector<ofColor> color_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openframeworks"); ofBackground(39); ofSetLineWidth(2); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { int base_radius = (ofGetFrameNum() * 2) % 420 + 60; for (int i = this->log_list.size() - 1; i >= 0; i--) { if (glm::length(this->log_list[i].back()) > 720) { this->log_list.erase(this->log_list.begin() + i); this->seed_list.erase(this->seed_list.begin() + i); this->velocity_list.erase(this->velocity_list.begin() + i); this->color_list.erase(this->color_list.begin() + i); continue; } auto feature = this->velocity_list[i] * 30; auto deg = ofMap(ofNoise(this->seed_list[i].z, ofGetFrameNum() * 0.005), 0, 1, 0, 360); feature += glm::vec2(30 * cos(deg * DEG_TO_RAD), 30 * sin(deg * DEG_TO_RAD)); auto next = this->log_list[i].back() + glm::normalize(feature) * 12; this->log_list[i].push_back(next); while (this->log_list[i].size() > 3) { this->log_list[i].erase(this->log_list[i].begin()); } } ofColor color; while(this->log_list.size() < 150) { int deg = ofRandom(360); float radius = 30; float next_radius = radius - 1; auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)); auto next = glm::vec2(next_radius * cos(deg * DEG_TO_RAD), next_radius * sin(deg * DEG_TO_RAD)); vector<glm::vec2> log; log.push_back(location); this->log_list.push_back(log); this->seed_list.push_back(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000))); this->velocity_list.push_back(glm::normalize(location - next)); color.setHsb(ofRandom(255), 180, 255); this->color_list.push_back(color); } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); ofNoFill(); for (int i = 0; i < this->log_list.size(); i++) { ofSetColor(this->color_list[i]); ofFill(); ofDrawSphere(glm::vec3(this->log_list[i].back(), 0) , 4); ofDrawSphere(glm::vec3(this->log_list[i].front(), 0), 4); ofPopMatrix(); ofNoFill(); ofBeginShape(); ofVertices(this->log_list[i]); ofEndShape(); } /* int start = 25 * 60; 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()); } |