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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; ofMesh face, line; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofSetLineWidth(3); ofEnableDepthTest(); this->line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); auto seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)); this->face.clear(); this->line.clear(); float phi_deg_step = 0.25; float theta_deg_step = 0.25; float threshold = 0.5; float noise_span = 0.005; float R = 200; float base_r = R * 0.25; float r = ofGetFrameNum() % 50 < 25 ? ofMap(ofGetFrameNum() % 50, 0, 25, R * 0.2, R * 0.4) : ofMap(ofGetFrameNum() % 50, 25, 50, R * 0.4, R * 0.2); ofColor face_color = ofColor(239); ofColor line_color = ofColor(239, 139, 139); for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) { for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) { auto noise_value = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg) * noise_span, ofGetFrameNum() * 0.025)); if (noise_value <= threshold) { continue; } auto noise_1 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg - theta_deg_step, phi_deg) * noise_span, ofGetFrameNum() * 0.025)); auto noise_2 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg + phi_deg_step) * noise_span, ofGetFrameNum() * 0.025)); auto noise_3 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg - phi_deg_step) * noise_span, ofGetFrameNum() * 0.025)); auto noise_4 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg + theta_deg_step, phi_deg) * noise_span, ofGetFrameNum() * 0.025)); auto index = this->face.getNumVertices(); vector<glm::vec3> vertices; vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5))); vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5))); vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5))); vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5))); this->face.addVertices(vertices); this->face.addColor(face_color); this->face.addColor(face_color); this->face.addColor(face_color); this->face.addColor(face_color); this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 3); this->face.addIndex(index + 0); this->face.addIndex(index + 3); this->face.addIndex(index + 2); if (noise_1 <= threshold) { this->line.addVertex(vertices[0]); this->line.addVertex(vertices[2]); this->line.addColor(line_color); this->line.addColor(line_color); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); } if (noise_2 <= threshold) { this->line.addVertex(vertices[2]); this->line.addVertex(vertices[3]); this->line.addColor(line_color); this->line.addColor(line_color); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); } if (noise_3 <= threshold) { this->line.addVertex(vertices[0]); this->line.addVertex(vertices[1]); this->line.addColor(line_color); this->line.addColor(line_color); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); } if (noise_4 <= threshold) { this->line.addVertex(vertices[1]); this->line.addVertex(vertices[3]); this->line.addColor(line_color); this->line.addColor(line_color); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); } } } r = ofGetFrameNum() % 50 < 25 ? ofMap(ofGetFrameNum() % 50, 0, 25, R * 0.4, R * 0.2) : ofMap(ofGetFrameNum() % 50, 25, 50, R * 0.2, R * 0.4); face_color = ofColor(239, 139, 139); line_color = ofColor(239); for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) { for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) { auto noise_value = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg) * noise_span, ofGetFrameNum() * 0.025)); if (noise_value >= threshold) { continue; } auto noise_1 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg - theta_deg_step, phi_deg) * noise_span, ofGetFrameNum() * 0.025)); auto noise_2 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg + phi_deg_step) * noise_span, ofGetFrameNum() * 0.025)); auto noise_3 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg, phi_deg - phi_deg_step) * noise_span, ofGetFrameNum() * 0.025)); auto noise_4 = ofNoise(glm::vec4(this->make_point(R, base_r, theta_deg + theta_deg_step, phi_deg) * noise_span, ofGetFrameNum() * 0.025)); auto index = this->face.getNumVertices(); vector<glm::vec3> vertices; vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5))); vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5))); vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5))); vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5))); this->face.addVertices(vertices); this->face.addColor(face_color); this->face.addColor(face_color); this->face.addColor(face_color); this->face.addColor(face_color); this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 3); this->face.addIndex(index + 0); this->face.addIndex(index + 3); this->face.addIndex(index + 2); if (noise_1 >= threshold) { this->line.addVertex(vertices[0]); this->line.addVertex(vertices[2]); this->line.addColor(line_color); this->line.addColor(line_color); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); } if (noise_2 >= threshold) { this->line.addVertex(vertices[2]); this->line.addVertex(vertices[3]); this->line.addColor(line_color); this->line.addColor(line_color); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); } if (noise_3 >= threshold) { this->line.addVertex(vertices[0]); this->line.addVertex(vertices[1]); this->line.addColor(line_color); this->line.addColor(line_color); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); } if (noise_4 >= threshold) { this->line.addVertex(vertices[1]); this->line.addVertex(vertices[3]); this->line.addColor(line_color); this->line.addColor(line_color); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); } } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(270 + 45); this->line.draw(); this->face.draw(); this->cam.end(); /* // ffmpeg -i img_%04d.jpg aaa.mp4 int start = 2; if (ofGetFrameNum() > start) { std::ostringstream os; os << std::setw(4) << std::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, z); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |
[ Link ]
https://github.com/junkiyoshi/DoodleDeProgramming/tree/b9bc9b45743a5e1611aed51069499a7624158e43