[ Video ]
[ About ]
色線。
[ Source ]
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 |
#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; }; |
|
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 |
#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetLineWidth(3); ofEnableDepthTest(); this->noise_param = ofRandom(1000); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); if (ofGetFrameNum() % 50 < 20) { if (ofGetFrameNum() % 50 < 10) { this->noise_param += ofMap(ofGetFrameNum() % 50, 0, 10, 0.001, 1); } else { this->noise_param += ofMap(ofGetFrameNum() % 50, 10, 20, 1, 0.001); } } else { this->noise_param += 0.001; } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); int v_span = 1; int u_span = 30; int R = 230; int r = 70; ofMesh line; line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); float noise_seed = ofRandom(1000); ofColor color; for (float v = 0; v <= 360; v += v_span) { int u_start = ofMap(ofNoise(noise_seed, cos(v * DEG_TO_RAD) * 0.9, sin(v * DEG_TO_RAD) * 0.9, this->noise_param), 0, 1, -360, 360); int next_u = ofMap(ofNoise(noise_seed, cos((v + v_span) * DEG_TO_RAD) * 0.9, sin((v + v_span) * DEG_TO_RAD) * 0.9, this->noise_param), 0, 1, -360, 360); for (int u = u_start; u < u_start + 360; u += u_span) { line.addVertex(this->make_point(R, r, u, v)); line.addVertex(this->make_point(R, r, next_u, v + v_span)); color.setHsb((int)ofMap(u, u_start, u_start + 360, 0, 512) % 255, 200, 255); ofColor line_color = color; line.addColor(line_color); line.addColor(line_color); line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 2); next_u += u_span; } } line.drawWireframe(); 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, z); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |