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ベジェ曲線で図形を描く。
Drawing shapes with Bezier curves.
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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) {}; void draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, bool draw_handle, bool noise_deg, bool fill); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { this->draw_MAGATAMA(glm::vec2(185, 200), 125, 0, false, false, false); this->draw_MAGATAMA(glm::vec2(495, 200), 125, 0, true, false, false); this->draw_MAGATAMA(glm::vec2(185, 520), 125, 0, true, true, false); this->draw_MAGATAMA(glm::vec2(495, 520), 125, 0, false, true, true); } //-------------------------------------------------------------- void ofApp::draw_MAGATAMA(glm::vec2 location, float radius, float rotate_deg, bool draw_handle, bool noise_deg, bool fill) { fill ? ofFill() : ofNoFill(); 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; if (noise_deg) { deg += ofMap(ofNoise(glm::vec3(vertices.back(), ofGetFrameNum() * 0.008)), 0, 1, -90, 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(radius * 0.5, radius * -0.5)); deg = 90; if (noise_deg) { deg += ofMap(ofNoise(glm::vec3(vertices.back(), ofGetFrameNum() * 0.008)), 0, 1, -90, 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; if (noise_deg) { deg += ofMap(ofNoise(glm::vec3(vertices.back(), ofGetFrameNum() * 0.008)), 0, 1, -90, 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 * cos(deg * DEG_TO_RAD), len * sin(deg * DEG_TO_RAD))))); vertices.push_back(glm::vec2(radius, 0)); deg = 270; if (noise_deg) { deg += ofMap(ofNoise(glm::vec3(vertices.back(), ofGetFrameNum() * 0.008)), 0, 1, -90, 90); } 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; if (noise_deg) { deg += ofMap(ofNoise(glm::vec3(vertices.back(), ofGetFrameNum() * 0.008)), 0, 1, -90, 90); } 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; if (noise_deg) { deg += ofMap(ofNoise(glm::vec3(vertices.back(), ofGetFrameNum() * 0.008)), 0, 1, -90, 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(39); 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 * 0.1 * cos(deg * DEG_TO_RAD), radius * 0.1 * sin(deg * DEG_TO_RAD))); } ofEndShape(true); if (draw_handle) { ofSetColor(139); ofSetLineWidth(1); for (int i = 0; i < vertices.size(); i++) { ofDrawCircle(vertices[i], 4); ofDrawCircle(handle_list[i].first, 2); ofDrawCircle(handle_list[i].second, 2); ofDrawLine(vertices[i], handle_list[i].first); ofDrawLine(vertices[i], handle_list[i].second); } } ofPopMatrix(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |