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背景を描写せずに、上書きを続ける。周りだけ塗りつぶして枠とする。
Continue to overwrite without describing the background. Fill in only the area around it to make a frame.
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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(float theta); }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetColor(39); ofSetBackgroundAuto(false); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); } //-------------------------------------------------------------- void ofApp::draw() { for (int i = 0; i < 2; i++) { auto location = glm::vec2(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.05), 0, 1, 50, 670), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.05), 0, 1, 50, 670)); auto scale = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.05), 0, 1, 1, 10); ofPushMatrix(); ofTranslate(location); ofRotate(ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.05), 0, 1, -360, 360)); ofSetColor(39); ofFill(); ofBeginShape(); for (auto deg = 0; deg < 360; deg += 1) { ofVertex(this->make_point(deg * DEG_TO_RAD) * scale); } ofEndShape(true); ofSetColor(239); ofNoFill(); ofBeginShape(); for (auto deg = 0; deg < 360; deg += 1) { ofVertex(this->make_point(deg * DEG_TO_RAD) * scale); } ofEndShape(true); ofPopMatrix(); } ofSetColor(239); ofFill(); ofBeginShape(); ofVertex(0, 0); ofVertex(ofGetWidth(), 0); ofVertex(ofGetWidth(), ofGetHeight()); ofVertex(0, ofGetHeight()); ofNextContour(true); ofVertex(50, 50); ofVertex(ofGetWidth() - 50, 50); ofVertex(ofGetWidth() - 50, ofGetHeight() - 50); ofVertex(50, ofGetHeight() - 50); ofEndShape(true); } //-------------------------------------------------------------- //Reference by https://twitter.com/shiffman/status/1095764239665512453 glm::vec2 ofApp::make_point(float theta) { float x = 16 * (pow(sin(theta), 3)); float y = 13 * cos(theta) - 5 * cos(2 * theta) - 2 * cos(3 * theta) - cos(4 * theta); return glm::vec2(x, -y); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |