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フレームを重ねる。
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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) {}; ofEasyCam cam; float noise_step; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openframeworks"); ofBackground(0); ofEnableDepthTest(); ofSetLineWidth(3); } //-------------------------------------------------------------- void ofApp::update() { auto param = ofGetFrameNum() % 50; if (param > 12 && param < 38) { if (param < 25) { this->noise_step += ofMap(param, 12, 25, 0, 0.125); } else if (param > 25) { this->noise_step += ofMap(param, 25, 38, 0.125, 0); } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); int width = 350; int height = 350; int len = 15; for (int z = -300; z <= 600; z += 10) { ofPushMatrix(); ofTranslate(0, 0, z); ofRotate(ofMap(ofNoise((z + 300) * 0.0015 + this->noise_step), 0, 1, -360, 360)); ofFill(); ofSetColor(0); ofBeginShape(); ofVertex(glm::vec2(width * -0.5, height * -0.5)); ofVertex(glm::vec2(width * 0.5, height * -0.5)); ofVertex(glm::vec2(width * 0.5, height * 0.5)); ofVertex(glm::vec2(width * -0.5, height * 0.5)); ofNextContour(true); ofVertex(glm::vec2(width * -0.5 + len, height * -0.5 + len)); ofVertex(glm::vec2(width * 0.5 - len, height * -0.5 + len)); ofVertex(glm::vec2(width * 0.5 - len, height * 0.5 - len)); ofVertex(glm::vec2(width * -0.5 + len, height * 0.5 - len)); ofEndShape(true); ofNoFill(); ofSetColor(255, ofMap(z, -300, 600, 0, 255)); ofBeginShape(); ofVertex(glm::vec2(width * -0.5, height * -0.5)); ofVertex(glm::vec2(width * 0.5, height * -0.5)); ofVertex(glm::vec2(width * 0.5, height * 0.5)); ofVertex(glm::vec2(width * -0.5, height * 0.5)); ofNextContour(true); ofVertex(glm::vec2(width * -0.5 + len, height * -0.5 + len)); ofVertex(glm::vec2(width * 0.5 - len, height * -0.5 + len)); ofVertex(glm::vec2(width * 0.5 - len, height * 0.5 - len)); ofVertex(glm::vec2(width * -0.5 + len, height * 0.5 - len)); ofEndShape(true); ofPopMatrix(); } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |