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正方形の破片。
Piece of 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 mouseEntered(int x, int y) {}; void mouseExited(int x, int y) {}; void windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; glm::vec2 make_point(int len, int param); ofMesh mesh; vector<ofColor> color_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofColor color; vector<int> hex_list = { 0x247BA0, 0x70C1B3, 0xB2DBBF, 0xF3FFBD, 0xFF1654 }; for (auto hex : hex_list) { color.setHex(hex); this->color_list.push_back(color); } } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->mesh.clear(); int x_span = 256; int y_span = 240; for (int x = x_span * 0.5; x <= ofGetWidth(); x += x_span) { for (int y = y_span * 0.5; y <= ofGetWidth(); y += y_span) { for (int in = 10; in < 220; in += 30) { int color_index = ofRandom(this->color_list.size()); ofColor color = this->color_list[color_index]; int out = in + 15; int start_param = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 0, 100); int noise_value = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 1, 150); int end_param = start_param + noise_value; for (int param = start_param; param <= end_param; param++) { int index = this->mesh.getNumVertices(); vector<glm::vec3> vertices; vertices.push_back(glm::vec3(x, y, 0) + glm::vec3(this->make_point(in, param), 0)); vertices.push_back(glm::vec3(x, y, 0) + glm::vec3(this->make_point(out, param), 0)); vertices.push_back(glm::vec3(x, y, 0) + glm::vec3(this->make_point(out, param + 1), 0)); vertices.push_back(glm::vec3(x, y, 0) + glm::vec3(this->make_point(in, param + 1), 0)); this->mesh.addVertices(vertices); for (int i = 0; i < vertices.size(); i++) { this->mesh.addColor(color); } this->mesh.addIndex(index + 0); this->mesh.addIndex(index + 1); this->mesh.addIndex(index + 2); this->mesh.addIndex(index + 0); this->mesh.addIndex(index + 2); this->mesh.addIndex(index + 3); } } } } } //-------------------------------------------------------------- void ofApp::draw() { this->mesh.drawFaces(); } //-------------------------------------------------------------- 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(1280, 720, OF_WINDOW); ofRunApp(new ofApp()); } |