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2点が近ければ線、3点が近ければ面。
Connect near points.
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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 face, 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() { this->face.clearIndices(); this->frame.clearIndices(); for (int i = 0; i < 2; i++) { auto location = glm::vec3(this->make_point(ofRandom(50, 300), ofRandom(100)), -150); this->face.addVertex(location); this->frame.addVertex(location); } for (int i = this->face.getNumVertices() - 1; i >= 0; i--) { auto vertex = this->face.getVertex(i); vertex.z += 1; if (vertex.z < 150) { this->face.setVertex(i, vertex); this->frame.setVertex(i, vertex); } else { this->face.removeVertex(i); this->frame.removeVertex(i); } } for (int i = 0; i < this->face.getNumVertices(); i++) { vector<int> near_index; for (int k = 0; k < this->face.getNumVertices(); k++) { if (i == k) continue; if (glm::distance(this->frame.getVertex(i), this->frame.getVertex(k)) < 30) { near_index.push_back(k); } } for (int k = 0; k < near_index.size(); k++) { this->frame.addIndex(i); this->frame.addIndex(near_index[k]); for (int m = 0; m < near_index.size(); m++) { if (k == m) continue; if (glm::distance(this->frame.getVertex(near_index[k]), this->frame.getVertex(near_index[m])) < 30) { this->face.addIndex(i); this->face.addIndex(near_index[k]); this->face.addIndex(near_index[m]); } } } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofRotateX(270); ofRotateZ(ofGetFrameNum() * 0.5); ofSetColor(39); ofNoFill(); ofDrawBox(glm::vec3(), 300); for (auto& vertex : this->frame.getVertices()) { ofDrawSphere(vertex, 1); } ofSetColor(39, 39, 239); this->face.drawFaces(); ofSetColor(39); 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()); } |