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手前と奥。
Front and back.
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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) {}; void draw_particles(int count); int inner_size; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetLineWidth(2); this->inner_size = 150; } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { vector<glm::vec2> outer_vertices = { glm::vec2(0, 0), glm::vec2(0, ofGetHeight()), glm::vec2(ofGetWidth(), ofGetHeight()), glm::vec2(ofGetWidth(), 0) }; vector<glm::vec2> inner_vertices = { glm::vec2(ofGetWidth() * 0.5 - this->inner_size, ofGetHeight() * 0.5 - this->inner_size), glm::vec2(ofGetWidth() * 0.5 - this->inner_size, ofGetHeight() * 0.5 + this->inner_size), glm::vec2(ofGetWidth() * 0.5 + this->inner_size, ofGetHeight() * 0.5 + this->inner_size), glm::vec2(ofGetWidth() * 0.5 + this->inner_size, ofGetHeight() * 0.5 - this->inner_size) }; this->draw_particles(16); ofFill(); ofSetColor(239); ofBeginShape(); ofVertices(outer_vertices); ofNextContour(true); ofVertices(inner_vertices); ofEndShape(true); ofNoFill(); ofSetColor(39); ofBeginShape(); ofVertices(outer_vertices); ofNextContour(true); ofVertices(inner_vertices); ofEndShape(true); this->draw_particles(8); } //-------------------------------------------------------------- void ofApp::draw_particles(int count) { ofSetColor(39); for (int i = 0; i < count; i++) { auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000)); auto location = glm::vec2(); vector<glm::vec2> vertices; for (int k = 0; k < 15; k++) { location = glm::vec2(ofMap(ofNoise(noise_seed.x, (ofGetFrameNum() + k) * 0.005), 0, 1, 0, ofGetWidth()), ofMap(ofNoise(noise_seed.y, (ofGetFrameNum() + k) * 0.005), 0, 1, 0, ofGetHeight())); vertices.push_back(location); } ofNoFill(); ofBeginShape(); ofVertices(vertices); ofEndShape(); ofFill(); ofDrawCircle(location, 8); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |