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ねじれフレーム。
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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) {}; ofEasyCam cam; ofMesh frame; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofColor(239); ofSetLineWidth(2); ofEnableDepthTest(); this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->frame.clear(); int span = 10; int len = 300; int z = len + span * 0.5; float angle; glm::highp_mat4 rotation, twist; for (int i = 0; i <= 4; i++) { for (int x = -len; x <= len; x += span) { for (int y = -len * 3; y <= len * 3; y += span) { if (i <= 4) { angle = PI * 0.5 * i; rotation = glm::rotate(glm::mat4(), angle, glm::vec3(0, 1, 0)); } auto index = this->frame.getNumVertices(); vector<glm::vec3> vertices; vertices.push_back(glm::vec4(x - span * 0.5, y - span * 0.5, z, 0) * rotation); vertices.push_back(glm::vec4(x + span * 0.5, y - span * 0.5, z, 0) * rotation); vertices.push_back(glm::vec4(x + span * 0.5, y + span * 0.5, z, 0) * rotation); vertices.push_back(glm::vec4(x - span * 0.5, y + span * 0.5, z, 0) * rotation); for (auto& vertex : vertices) { auto noise_value = ofNoise(vertex.y * 0.0002 + ofGetFrameNum() * 0.01); auto twist_rad = ofMap(noise_value, -1, 1, PI * -6, PI * 6); twist = glm::rotate(glm::mat4(), twist_rad, glm::vec3(0, 1, 0)); vertex = glm::vec4(vertex, 0) * twist; } if (x == -len) { this->frame.addVertex(vertices[0]); this->frame.addVertex(vertices[3]); this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 2); } if (y == len * 3) { this->frame.addVertex(vertices[2]); this->frame.addVertex(vertices[3]); this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 2); } if (x == len) { this->frame.addVertex(vertices[1]); this->frame.addVertex(vertices[2]); this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 2); } if (y == -len * 3) { this->frame.addVertex(vertices[0]); this->frame.addVertex(vertices[1]); this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 2); } } } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); this->frame.draw(); this->cam.end(); /* int start = 600; 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); } } */ } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |