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速度を円に変換。
Convert velocity to circle.
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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<int> deg_start_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); for (int i = 0; i < 10; i++) { this->deg_start_list.push_back(0); } } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { for (int i = 0; i < this->deg_start_list.size(); i++) { auto seed = glm::vec2(ofRandom(1000), ofRandom(1000)); auto location = glm::vec2(ofMap(ofNoise(seed.x, ofGetFrameNum() * 0.005), 0, 1, 50, ofGetWidth() - 50), ofMap(ofNoise(seed.y, ofGetFrameNum() * 0.005), 0, 1, 50, ofGetHeight() - 50)); auto next_location = glm::vec2(ofMap(ofNoise(seed.x, (ofGetFrameNum() + 1) * 0.005), 0, 1, 50, ofGetWidth() - 50), ofMap(ofNoise(seed.y, (ofGetFrameNum() + 1) * 0.005), 0, 1, 50, ofGetHeight() - 50)); auto distance = next_location - location; auto len = glm::length(distance); auto radius = ofMap(len, 0, 5, 20, 45); this->deg_start_list[i] += distance.x + distance.y > 0 ? ofMap(len, 0, 5, 0, 8) : ofMap(len, 0, 5, 0, -8); ofFill(); ofSetColor(239); ofDrawCircle(location, 20); ofNoFill(); ofSetColor(39); ofDrawCircle(location, 20); for (int deg_start = this->deg_start_list[i]; deg_start < this->deg_start_list[i] + 360; deg_start += 60) { vector<glm::vec2> vertices, sub_vertices; for (int deg = deg_start; deg <= deg_start + 40; deg++) { vertices.push_back(location + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD))); sub_vertices.push_back(location + glm::vec2((radius + 5) * cos(deg * DEG_TO_RAD), (radius + 5) * sin(deg * DEG_TO_RAD))); } reverse(sub_vertices.begin(), sub_vertices.end()); ofFill(); ofSetColor(239); ofBeginShape(); ofVertices(vertices); ofVertices(sub_vertices); ofEndShape(); ofNoFill(); ofSetColor(39); ofBeginShape(); ofVertices(vertices); ofVertices(sub_vertices); ofEndShape(true); } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |