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変形する図形。
Changing Shapes.
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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) {}; void setShapeToMesh(ofMesh& mesh_target, ofMesh& frame_target, glm::vec3 location, float len, int param_start, int param_end, ofColor face_color, ofColor frame_color); glm::vec2 make_point(int len, int param); vector<ofMesh> face_list, frame_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetColor(39); ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->face_list.clear(); this->frame_list.clear(); for (int x = -180; x <= 180; x += 360) { for (int y = -180; y <= 180; y += 360) { float noise_seed_1 = ofRandom(1000); float noise_seed_2 = ofRandom(1000); for (int i = 0; i < 150; i++) { int param_start = ofMap(ofNoise(noise_seed_1, ofGetFrameNum() * 0.003 + i * 0.001), 0, 1, 0, 200); int param_end = param_start + ofMap(ofNoise(noise_seed_2, ofGetFrameNum() * 0.003 + i * 0.001), 0, 1, 25, 50); ofMesh face, frame; frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); this->setShapeToMesh(face, frame, glm::vec3(x, y, 0), 350, param_start, param_end, ofColor(ofMap(i, 0, 150, 200, 39)), ofColor(ofMap(i, 0, 150, 78, 239))); this->face_list.push_back(face); this->frame_list.push_back(frame); } } } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5); for (int i = 0; i < this->face_list.size(); i++) { this->face_list[i].drawFaces(); this->frame_list[i].drawWireframe(); } } //-------------------------------------------------------------- void ofApp::setShapeToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float len, int param_start, int param_end, ofColor face_color, ofColor frame_color) { vector<glm::vec3> vertices; vertices.push_back(location + this->make_point(len, param_start)); for (int param = param_start; param < param_end; param++) { if (param % 25 == 0) { vertices.push_back(location + this->make_point(len, param)); } } vertices.push_back(location + this->make_point(len, param_end)); face_target.addVertices(vertices); frame_target.addVertices(vertices); face_target.addIndex(0); face_target.addIndex(1); face_target.addIndex(2); for (int i = 2; i < face_target.getNumVertices() - 1; i++) { face_target.addIndex(0); face_target.addIndex(i); face_target.addIndex(i + 1); } for (int i = 0; i <frame_target.getNumVertices() - 1; i++) { frame_target.addIndex(i); frame_target.addIndex(i + 1); } frame_target.addIndex(0); frame_target.addIndex(face_target.getNumVertices() - 1); for (int i = 0; i < vertices.size(); i++) { face_target.addColor(face_color); frame_target.addColor(frame_color); } } //-------------------------------------------------------------- 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()); } |