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レール。
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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; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(0); ofSetColor(255); ofSetLineWidth(1.5); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); auto radius = 150; int deg_span = 6; auto target_deg = ofGetFrameNum() % 360; for (int deg = 0; deg < 360; deg += deg_span) { auto location = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0); auto target_location = glm::vec3(radius * cos(target_deg * DEG_TO_RAD), radius * sin(target_deg * DEG_TO_RAD), 0); auto distance = glm::distance(location, target_location); auto len = 20; if (distance < 60) { len = ofMap(distance, 0, 60, 60, 20); } auto location_1 = glm::vec3((radius + len * 0.5) * cos(deg * DEG_TO_RAD), (radius + len * 0.5) * sin(deg * DEG_TO_RAD), 0); auto location_2 = glm::vec3((radius - len * 0.5) * cos(deg * DEG_TO_RAD), (radius - len * 0.5) * sin(deg * DEG_TO_RAD), 0); ofDrawLine(location_1, location_2); ofDrawSphere(location_1, 2); ofDrawSphere(location_2, 2); ofDrawSphere(target_location, 8); } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |