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放射線を回転させる。
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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 mesh; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openframeworks"); ofBackground(0); ofSetColor(255); ofEnableDepthTest(); ofSetLineWidth(2); this->mesh.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->mesh.clear(); auto noise_param = glm::vec3(ofRandom(360), ofRandom(360), ofRandom(360)); for (int radius = 50; radius <= 300; radius += 30) { auto rotation = glm::vec3( ofMap(ofNoise(noise_param.x, radius * 0.00065 - ofGetFrameNum() * 0.008), 0, 1, -360, 360), ofMap(ofNoise(noise_param.y, radius * 0.00065 - ofGetFrameNum() * 0.008), 0, 1, -360, 360), ofMap(ofNoise(noise_param.z, radius * 0.00065 - ofGetFrameNum() * 0.008), 0, 1, -360, 360)); int start_index = this->mesh.getNumVertices(); int index = start_index; for (int deg = 0; deg < 360; deg += 1) { auto vertex = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0); auto rotation_x = glm::rotate(glm::mat4(), rotation.x * (float)DEG_TO_RAD, glm::vec3(1, 0, 0)); auto rotation_y = glm::rotate(glm::mat4(), rotation.y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0)); auto rotation_z = glm::rotate(glm::mat4(), rotation.z * (float)DEG_TO_RAD, glm::vec3(0, 0, 1)); vertex = glm::vec4(vertex, 0) * rotation_z * rotation_y * rotation_x; this->mesh.addVertex(vertex); if (deg > 0) { this->mesh.addIndex(index - 1); this->mesh.addIndex(index); } index++; } this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(start_index); } int index_span = 30; for (int index = 0; index < this->mesh.getNumVertices() - 360; index += index_span) { this->mesh.addIndex(index); this->mesh.addIndex(index + 360); } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateY(ofGetFrameNum()); this->mesh.drawWireframe(); this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |