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放射状の線。
Radial line.
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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 mouseEntered(int x, int y) {}; void mouseExited(int x, int y) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; ofMesh face, line; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openframeworks"); ofBackground(0); ofSetLineWidth(1.5); ofSetCircleResolution(60); this->line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->face.clear(); this->line.clear(); auto span = 3; auto radius_span = 10; for (auto deg = 0; deg < 360; deg += 6) { for (auto radius = 150; radius <= 1024; radius += radius_span) { auto prev_location = glm::vec2((radius - radius_span) * cos(deg * DEG_TO_RAD), (radius - radius_span) * sin(deg * DEG_TO_RAD)); auto location = glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)); auto next_location = glm::vec2((radius + radius_span) * cos(deg * DEG_TO_RAD), (radius + radius_span) * sin(deg * DEG_TO_RAD)); auto left = glm::vec2(radius * cos((deg + span * 0.5) * DEG_TO_RAD), radius * sin((deg + span * 0.5) * DEG_TO_RAD)); auto right = glm::vec2(radius * cos((deg - span * 0.5) * DEG_TO_RAD), radius * sin((deg - span * 0.5) * DEG_TO_RAD)); auto next_left = glm::vec2((radius + radius_span) * cos((deg + span * 0.5) * DEG_TO_RAD), (radius + radius_span) * sin((deg + span * 0.5) * DEG_TO_RAD)); auto next_right = glm::vec2((radius + radius_span) * cos((deg - span * 0.5) * DEG_TO_RAD), (radius + radius_span) * sin((deg - span * 0.5) * DEG_TO_RAD)); auto prev_noise_value = ofNoise(glm::vec3(prev_location * 0.05, ofGetFrameNum() * 0.0085)); auto noise_value = ofNoise(glm::vec3(location * 0.05, ofGetFrameNum() * 0.0085)); auto next_noise_value = ofNoise(glm::vec3(next_location * 0.05, ofGetFrameNum() * 0.0085)); auto threshold = 0.65; if (noise_value < threshold) { this->face.addVertex(glm::vec3(left, 0)); this->face.addVertex(glm::vec3(next_left, 0)); this->face.addVertex(glm::vec3(next_right, 0)); this->face.addVertex(glm::vec3(right, 0)); this->line.addVertex(glm::vec3(left, 0)); this->line.addVertex(glm::vec3(next_left, 0)); this->line.addVertex(glm::vec3(next_right, 0)); this->line.addVertex(glm::vec3(right, 0)); 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() - 2); this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4); if (radius == 150 || prev_noise_value > threshold) { this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 4); } if (next_noise_value > threshold) { this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3); } } } } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); ofSetColor(239, 69, 74); ofFill(); ofDrawCircle(glm::vec2(), 135); this->face.draw(); ofSetColor(255); ofNoFill(); ofDrawCircle(glm::vec2(), 135); this->line.drawWireframe(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |