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ノイズで移動する軌跡。
Log by hexagon color.
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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 radius; vector<glm::vec2> hexagon_list; vector<glm::vec2> noise_seed_list; vector<float> alpha_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); this->radius = 12; auto x_span = this->radius * sqrt(3); auto flg = true; for (float y = 0; y < ofGetHeight() + this->radius; y += this->radius * 1.5) { for (float x = 0; x < ofGetWidth() + this->radius; x += x_span) { glm::vec2 location; if (flg) { location = glm::vec2(x, y); } else { location = glm::vec2(x + (this->radius * sqrt(3) / 2), y); } this->hexagon_list.push_back(location); this->noise_seed_list.push_back(glm::vec2(ofRandom(1000), ofRandom(1000))); this->alpha_list.push_back(0); } flg = !flg; } } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); for (int k = 0; k < 4; k++) { glm::vec2 noise_location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01), 0, 1, 0, ofGetHeight())); for (int i = 0; i < this->hexagon_list.size(); i++) { if (glm::distance(this->hexagon_list[i], noise_location) < 50) { this->alpha_list[i] = this->alpha_list[i] < 255 ? this->alpha_list[i] + 50 : 255; } else { this->alpha_list[i] = this->alpha_list[i] > 0 ? this->alpha_list[i] - 2 : 0; } } } } //-------------------------------------------------------------- void ofApp::draw() { ofColor color; for (int i = 0; i < this->hexagon_list.size(); i++) { vector<glm::vec2> vertices; for (auto deg = 90; deg < 450; deg += 60) { vertices.push_back(this->hexagon_list[i] + glm::vec2(this->radius * cos(deg * DEG_TO_RAD), this->radius * sin(deg * DEG_TO_RAD))); } color.setHsb(ofMap(ofNoise(glm::vec3(this->noise_seed_list[i], ofGetFrameNum() * 0.05)), 0, 1, 0, 255), 130, 255); //color = ofColor(ofMap(ofNoise(glm::vec3(this->noise_seed_list[i], ofGetFrameNum() * 0.05)), 0, 1, 39, 139)); ofFill(); ofSetColor(color, this->alpha_list[i]); ofBeginShape(); ofVertices(vertices); ofEndShape(true); ofNoFill(); ofSetColor(239); ofBeginShape(); ofVertices(vertices); ofEndShape(true); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(1280, 720, OF_WINDOW); ofRunApp(new ofApp()); } |