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正方形を部分的に分割して色付け
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 windowResized(int w, int h) {}; void dragEvent(ofDragInfo dragInfo) {}; void gotMessage(ofMessage msg) {}; void draw_piece(vector<glm::vec2>& outer, vector<glm::vec2>& inner); glm::vec2 make_point(int len, int param); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetLineWidth(1.5); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { int width = 35; int span = 240; int len_start = 220; vector<glm::vec2> outer; vector<glm::vec2> inner; for (int x = span * 0.5; x < ofGetWidth(); x += span) { for (int y = span * 0.5; y < ofGetHeight(); y += span) { ofPushMatrix(); ofTranslate(x, y); for (int len = len_start; len > width; len -= width * 1.5) { int start = ofRandom(100) + ofMap(ofNoise(ofRandom(100), ofGetFrameNum() * 0.01), 0, 1, 0, 100); for (int param = start; param < start + 100; param++) { if (ofRandom(100) < 7.5) { if (outer.size() > 10 && param < start + 90) { outer.push_back(this->make_point(len, param)); inner.push_back(this->make_point(len - width, param)); this->draw_piece(outer, inner); } } outer.push_back(this->make_point(len, param)); inner.push_back(this->make_point(len - width, param)); } outer.push_back(this->make_point(len, start)); inner.push_back(this->make_point(len - width, start)); this->draw_piece(outer, inner); } ofPopMatrix(); } } } //-------------------------------------------------------------- void ofApp::draw_piece(vector<glm::vec2>& outer, vector<glm::vec2>& inner) { ofColor random_color; random_color.setHsb(ofRandom(255), 180, 255); reverse(inner.begin(), inner.end()); ofFill(); ofSetColor(random_color); ofBeginShape(); ofVertices(outer); ofVertices(inner); ofEndShape(true); ofNoFill(); ofSetColor(39); ofBeginShape(); ofVertices(outer); ofVertices(inner); ofEndShape(true); outer.clear(); inner.clear(); } //-------------------------------------------------------------- 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()); } |