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ノイズラインを円に。
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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) {}; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openFrameworks"); ofBackground(0); ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); vector<ofColor> color_list = { ofColor(255, 0, 0), ofColor(0, 255, 0), ofColor(0, 0, 255) }; for (int y = -200; y <= 200; y += 200) { int param_x = ofMap((ofGetFrameNum() * 8 + y * ofGetWindowWidth() / 3) % ofGetWindowWidth(), 0, ofGetWindowWidth(), ofGetWindowWidth() * -0.5 - 120, ofGetWindowWidth() * 0.5 + 120); for (int color_index = 0; color_index < color_list.size(); color_index++) { auto noise_seed = ofRandom(1000); for (int x = ofGetWindowWidth() * -0.5; x <= ofGetWindowWidth() * 0.5; x += 18) { for (int i = 0; i < 3; i++) { auto noise_value = ofNoise(noise_seed, x * 0.02, i * 0.1 + ofGetFrameNum() * 0.001); auto param = ofMap(noise_value, 0, 1, -150, 150); auto len = abs(param_x - x); if (len < 120) { param *= ofMap(len, 0, 120, 1, 0); } else { param *= 0; } ofSetColor(color_list[color_index]); ofNoFill(); ofDrawCircle(x, y + param, 7); ofSetColor(color_list[color_index], 192 - i * 64); ofFill(); ofDrawCircle(x, y + param, 7); } } } } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |