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Make waves with noise. Adjust the width of the wave by the distance from the center.
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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) {}; ofMesh face, frame; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetLineWidth(2); } //-------------------------------------------------------------- void ofApp::update() { } //-------------------------------------------------------------- void ofApp::draw() { int span = 12; for (int y = span * -5; y < ofGetHeight() + span * 5; y += span) { vector<glm::vec2> vertices; vertices.push_back(glm::vec2(0, ofGetHeight())); for (int x = 0; x <= ofGetWidth(); x += 5) { auto distance = abs(ofGetWidth() * 0.5 - x); auto tmp_y = 0.f; if (distance < 250) { auto noise_value = ofNoise(y * 0.03, x * 0.01, ofGetFrameNum() * 0.005); auto param = ofMap(distance, 0, 250, 1, 0); tmp_y = ofMap(noise_value, 0, 1, span * -5 * param, span * 5 * param); } vertices.push_back(glm::vec2(x, y + tmp_y)); } vertices.push_back(glm::vec2(ofGetWidth() , ofGetHeight())); ofFill(); ofSetColor(239); ofBeginShape(); ofVertices(vertices); ofEndShape(true); ofNoFill(); ofSetColor(39); ofBeginShape(); ofVertices(vertices); ofEndShape(true); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |