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正方形を這い回る帯
Crawling bands on the 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; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofSetColor(239); ofSetLineWidth(3); ofEnableDepthTest(); ofNoFill(); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); int len = 500; for (int i = 0; i < 2; i++) { for (int z = -len * 0.5; z <= len * 0.5; z += 30) { int param_start = ofGetFrameNum() + (z + len * 0.5) * 0.1; vector<glm::vec3> vertices; vector<glm::vec3> sub_vertices; for (int param = param_start; param <= param_start + 30; param++) { vertices.push_back(glm::vec3(this->make_point(len, param), z - 15)); sub_vertices.push_back(glm::vec3(this->make_point(len, param), z + 15)); } for (int i = sub_vertices.size() - 1; i > -1; i--) { vertices.push_back(sub_vertices[i]); } ofBeginShape(); ofVertices(vertices); ofEndShape(true); } ofRotateX(90); } 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()); } |