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ランダムウォークの中間地点に勾玉を描く。
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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_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor color); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openFrameworks"); ofBackground(0); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); vector<glm::vec2> location_list; vector<ofColor> color_list; ofColor color; for (int i = 0; i < 80; i++) { auto location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -320, 320), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -320, 320)); location_list.push_back(location); color.setHsb(ofRandom(255), 180, 255); color_list.push_back(color); } vector<float> size_list; for (int i = 0; i < location_list.size(); i++) { for (int k = i + 1; k < location_list.size(); k++) { if (i == k) { continue; } auto distance = glm::distance(location_list[i], location_list[k]); if (distance < 80) { auto rad = atan2(location_list[k].y - location_list[i].y, location_list[k].x - location_list[i].x); auto location = location_list[i] + (location_list[k] - location_list[i]) * 0.5; this->draw_MAGATAMA(location, ofMap(distance, 0, 80, 40, 1), 180 + rad * RAD_TO_DEG, color_list[i]); this->draw_MAGATAMA(location, ofMap(distance, 0, 80, 40, 1), rad * RAD_TO_DEG, color_list[k]); } } } } //-------------------------------------------------------------- void ofApp::draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, ofColor color) { float len = radius * 0.5522; float deg = 0; ofPushMatrix(); ofTranslate(location); ofRotate(rotate_deg); vector<glm::vec2> vertices; vector<pair<glm::vec2, glm::vec2>> handle_list; vertices.push_back(glm::vec2(0, 0)); deg = 180; handle_list.push_back(make_pair<glm::vec2, glm::vec2>( glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))), glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD))))); vertices.push_back(glm::vec2(radius * 0.5, radius * -0.5)); deg = 90; handle_list.push_back(make_pair<glm::vec2, glm::vec2>( glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))), glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD))))); vertices.push_back(glm::vec2(0, radius * -1)); deg = 0; handle_list.push_back(make_pair<glm::vec2, glm::vec2>( glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))), glm::vec2(vertices.back() + glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD))))); vertices.push_back(glm::vec2(radius, 0)); deg = 270; handle_list.push_back(make_pair<glm::vec2, glm::vec2>( glm::vec2(vertices.back() + glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD))), glm::vec2(vertices.back() + glm::vec2(len * cos((deg + 180) * DEG_TO_RAD), len * sin((deg + 180) * DEG_TO_RAD))))); vertices.push_back(glm::vec2(0, radius)); deg = 0; handle_list.push_back(make_pair<glm::vec2, glm::vec2>( glm::vec2(vertices.back() + glm::vec2(len * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD))), glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD))))); vertices.push_back(glm::vec2(radius * -0.5, radius * 0.5)); deg = 90; handle_list.push_back(make_pair<glm::vec2, glm::vec2>( glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos(deg * DEG_TO_RAD), len * 0.5 * sin(deg * DEG_TO_RAD))), glm::vec2(vertices.back() + glm::vec2(len * 0.5 * cos((deg + 180) * DEG_TO_RAD), len * 0.5 * sin((deg + 180) * DEG_TO_RAD))))); ofSetColor(color); ofFill(); ofBeginShape(); for (int i = 0; i < vertices.size(); i++) { int n = (i + 1) % vertices.size(); ofVertex(vertices[i]); ofBezierVertex(handle_list[i].second, handle_list[n].first, vertices[n]); } ofNextContour(true); for (deg = 0; deg <= 360; deg += 5) { ofVertex(glm::vec2(0, radius * 0.5) + glm::vec2(radius * 0.2 * cos(deg * DEG_TO_RAD), radius * 0.2 * sin(deg * DEG_TO_RAD))); } ofEndShape(true); ofSetColor(ofColor(255, color.a)); ofNoFill(); ofBeginShape(); for (int i = 0; i < vertices.size(); i++) { int n = (i + 1) % vertices.size(); ofVertex(vertices[i]); ofBezierVertex(handle_list[i].second, handle_list[n].first, vertices[n]); } ofNextContour(true); for (deg = 0; deg <= 360; deg += 5) { ofVertex(glm::vec2(0, radius * 0.5) + glm::vec2(radius * 0.2 * cos(deg * DEG_TO_RAD), radius * 0.2 * sin(deg * DEG_TO_RAD))); } ofEndShape(true); ofPopMatrix(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |