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ハーフ正方形回転。
Rotating half square.
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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 len, int param); ofEasyCam cam; ofMesh mesh, frame; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetLineWidth(1.5); ofEnableDepthTest(); this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->mesh.clear(); this->frame.clear(); auto noise_location = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)); int len = 300; int width = 20; for(int len = 100; len <= 500; len += 25){ auto angle_x = ofMap(ofNoise(noise_location.x, len * 0.001 + ofGetFrameNum() * 0.003), 0, 1, 0, PI * 2); auto angle_y = ofMap(ofNoise(noise_location.y, len * 0.001 + ofGetFrameNum() * 0.003), 0, 1, 0, PI * 2); auto angle_z = ofMap(ofNoise(noise_location.z, len * 0.001 + ofGetFrameNum() * 0.003), 0, 1, 0, PI * 2); auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0)); auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0)); auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1)); int start_param = ofRandom(1000) + ofGetFrameNum() * ofRandom(1, 1.5); int end_param = start_param + 55; int start_index = this->mesh.getNumVertices(); for (int param = start_param; param <= end_param; param++) { int index = mesh.getNumVertices() - 2; vector<glm::vec3> vertices; vertices.push_back(glm::vec4(this->make_point(len, param), width * 0.5, 0) * rotation_z * rotation_y * rotation_x); vertices.push_back(glm::vec4(this->make_point(len, param), width * -0.5, 0) * rotation_z * rotation_y * rotation_x); mesh.addVertices(vertices); frame.addVertices(vertices); if (index > start_index) { mesh.addIndex(index + 0); mesh.addIndex(index + 1); mesh.addIndex(index + 3); mesh.addIndex(index + 0); mesh.addIndex(index + 2); mesh.addIndex(index + 3); frame.addIndex(index + 0); frame.addIndex(index + 2); frame.addIndex(index + 1); frame.addIndex(index + 3); } if (param % 25 == 0) { frame.addIndex(frame.getNumVertices() - 1); frame.addIndex(frame.getNumVertices() - 2); } } frame.addIndex(start_index); frame.addIndex(start_index + 1); frame.addIndex(frame.getNumVertices() - 1); frame.addIndex(frame.getNumVertices() - 2); } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofSetColor(39); this->mesh.draw(); ofSetColor(239); this->frame.drawWireframe(); this->cam.end(); } //-------------------------------------------------------------- glm::vec2 ofApp::make_point(int len, int param) { param = param % 100; if (param < 25) { return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5); } else if (param < 50) { return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5)); } else if (param < 75) { return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5); } else { return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5)); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |