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Noise関数で辺の長さを可変にした四角(?)
I drawed a square(?) with a different side length using noise method.
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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) {}; // make method ofPoint make_rect_point(float len, int deg, int z = 0); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("Insta"); ofBackground(239); ofSetColor(39); ofSetLineWidth(1.5); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofColor line_color; int rect_len = 144; for (int x = rect_len / 2; x <= ofGetWidth() - rect_len / 2; x += rect_len) { for (int y = rect_len / 2; y <= ofGetHeight() - rect_len / 2; y += rect_len) { float random_value = ofRandom(1000); ofBeginShape(); for (int deg = 0; deg < 360; deg += 1) { ofPoint rect_point = this->make_rect_point(rect_len, deg); int noise_value = ofNoise(random_value, rect_point.x * 0.001, rect_point.y * 0.001, ofGetFrameNum() * 0.005) * 10; ofPoint point = this->make_rect_point(rect_len * noise_value * 0.1, deg) + ofPoint(x, y); ofVertex(point); } ofEndShape(true); } } } //-------------------------------------------------------------- ofPoint ofApp::make_rect_point(float len, int deg, int z) { int half_len = len * 0.5; int param = (deg + 45) / 90; ofPoint point; switch (param % 4) { case 0: return ofPoint(half_len, ofMap((deg + 45) % 90, 0, 89, -half_len, half_len), z); case 1: return ofPoint(ofMap((deg + 45) % 90, 0, 89, half_len, -half_len), half_len, z); case 2: return ofPoint(-half_len, ofMap((deg + 45) % 90, 0, 89, half_len, -half_len), z); case 3: return ofPoint(ofMap((deg + 45) % 90, 0, 89, -half_len, half_len), -half_len, z); default: return ofPoint(0, 0, 0); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |