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Stacking triangles.
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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::vec2 make_point(int radius, int deg); ofEasyCam cam; ofMesh face; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { this->face.clear(); int radius = 150; int deg_span = 1; for (int z = -150; z <= 150; z += 1) { int deg_start_ini = ofMap(ofNoise(z * 0.005 + ofGetFrameNum() * 0.035), 0, 1, 0, 720); for (int deg_start = deg_start_ini; deg_start < deg_start_ini + 360; deg_start += 120) { for (int deg = deg_start; deg < deg_start + 75; deg += deg_span) { vector<glm::vec3> vertices; vertices.push_back(glm::vec3(this->make_point(radius, deg), z + 0.5)); vertices.push_back(glm::vec3(this->make_point(radius, deg), z - 0.5)); vertices.push_back(glm::vec3(this->make_point(radius, deg + deg_span), z - 0.5)); vertices.push_back(glm::vec3(this->make_point(radius, deg + deg_span), z + 0.5)); int face_index = this->face.getNumVertices(); this->face.addVertices(vertices); this->face.addIndex(face_index + 0); this->face.addIndex(face_index + 1); this->face.addIndex(face_index + 2); this->face.addIndex(face_index + 0); this->face.addIndex(face_index + 2); this->face.addIndex(face_index + 3); } } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofSetColor(39); this->face.draw(); //ofSetColor(239); //this->frame.drawWireframe(); this->cam.end(); } //-------------------------------------------------------------- glm::vec2 ofApp::make_point(int radius, int deg) { deg = deg % 360; int deg_a = (deg / 120) * 120; int deg_b = deg_a + 120; int remainder = deg % 120; int diff = deg - deg_a; auto point_a = glm::vec2(radius * cos(deg_a * DEG_TO_RAD), radius * sin(deg_a * DEG_TO_RAD)); auto point_b = glm::vec2(radius * cos(deg_b * DEG_TO_RAD), radius * sin(deg_b * DEG_TO_RAD)); auto distance = point_b - point_a; return point_a + (distance / 120) * diff; } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |