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Triple tornado.
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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 face, line; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetLineWidth(2); ofEnableDepthTest(); this->line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->face.clear(); this->line.clear(); auto radius = 300; auto deg_width = 9; auto deg_span = 5; auto height_span = 10; auto max_height = 1000; ofColor face_color, line_color; for (radius = 100; radius <= 300; radius += 100) { if (radius % 200 == 0) { face_color = ofColor(39); line_color = ofColor(239); } else { face_color = ofColor(239); line_color = ofColor(39); } auto frame_step = ofMap(radius, 100, 300, 0.005, 0.025); auto threshold = ofMap(radius, 100, 300, 0.6, 0.35); for (auto deg_start = 0; deg_start < 360; deg_start += deg_width + 1) { auto deg = deg_start; for (auto height = 0; height < max_height; height += height_span) { auto prev_noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, (height - height_span) * 0.002 + ofGetFrameNum() * frame_step); auto noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, height * 0.002 + ofGetFrameNum() * frame_step); auto next_noise_value = ofNoise(radius * cos(deg_start * DEG_TO_RAD) * 0.005, radius * sin(deg_start * DEG_TO_RAD) * 0.005, (height + height_span) * 0.002 + ofGetFrameNum() * frame_step); if (noise_value < threshold) { this->face.addVertex(glm::vec3(radius * cos((deg)* DEG_TO_RAD), height, radius * sin((deg)* DEG_TO_RAD))); this->face.addVertex(glm::vec3(radius * cos((deg + deg_width) * DEG_TO_RAD), height, radius * sin((deg + deg_width) * DEG_TO_RAD))); this->face.addVertex(glm::vec3(radius * cos((deg + deg_span + deg_width) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span + deg_width) * DEG_TO_RAD))); this->face.addVertex(glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span) * DEG_TO_RAD))); this->line.addVertex(glm::vec3(radius * cos((deg)* DEG_TO_RAD), height, radius * sin((deg)* DEG_TO_RAD))); this->line.addVertex(glm::vec3(radius * cos((deg + deg_width) * DEG_TO_RAD), height, radius * sin((deg + deg_width) * DEG_TO_RAD))); this->line.addVertex(glm::vec3(radius * cos((deg + deg_span + deg_width) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span + deg_width) * DEG_TO_RAD))); this->line.addVertex(glm::vec3(radius * cos((deg + deg_span) * DEG_TO_RAD), height + height_span, radius * sin((deg + deg_span) * DEG_TO_RAD))); for (int i = 0; i < 4; i++) { this->face.addColor(face_color); this->line.addColor(line_color); } this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 2); this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 4); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 4); this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3); if (height >= max_height - height_span || next_noise_value > threshold) { this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); } if (height < height_span || prev_noise_value > threshold) { this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4); } } deg += deg_span; } } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(180); ofTranslate(0, -500, 0); this->face.drawFaces(); this->line.drawWireframe(); this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |
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