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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) {}; glm::vec3 make_point(float R, float r, float u, float v); ofEasyCam cam; float noise_param; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openframeworks"); ofBackground(39); ofSetLineWidth(2); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); this->noise_param = ofRandom(1000); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->noise_param += 0.00005; } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); float v_span = 1; float u_span = 90; int R = 230; int r = 70; ofColor color; float noise_seed = ofRandom(1000); float noise_span = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.008), 0, 1, 0, 4); for (float v = 0; v < 360; v += v_span) { int u_start = ofMap(ofNoise(noise_seed, cos(v * DEG_TO_RAD) * noise_span, sin(v * DEG_TO_RAD) * noise_span, this->noise_param), 0, 1, -360, 360); int next_u = ofMap(ofNoise(noise_seed, cos((v + v_span) * DEG_TO_RAD) * noise_span, sin((v + v_span) * DEG_TO_RAD) * noise_span, this->noise_param), 0, 1, -360, 360); for (float u = u_start; u < u_start + 360; u += u_span) { color.setHsb(ofMap(u, u_start, u_start + 360, 0, 255), 200, 255); ofSetColor(color); ofDrawLine(this->make_point(R, r, u, v), this->make_point(R, r, next_u, v + v_span)); next_u += u_span; } } this->cam.end(); /* int start = 220; if (ofGetFrameNum() > start) { ostringstream os; os << setw(4) << setfill('0') << ofGetFrameNum() - start; ofImage image; image.grabScreen(0, 0, ofGetWidth(), ofGetHeight()); image.saveImage("image/cap/img_" + os.str() + ".jpg"); if (ofGetFrameNum() - start >= 25 * 20) { std::exit(1); } } */ } //-------------------------------------------------------------- glm::vec3 ofApp::make_point(float R, float r, float u, float v) { // 数学デッサン教室 描いて楽しむ数学たち P.31 u *= DEG_TO_RAD; v *= DEG_TO_RAD; auto x = (R + r * cos(u)) * cos(v); auto y = (R + r * cos(u)) * sin(v); //auto z = r * sin(u); return glm::vec3(x, y, 0); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |