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ズームイン・アウト。
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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 mesh; float noise_span; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(25); ofSetWindowTitle("openFrameworks"); ofBackground(39); } //-------------------------------------------------------------- void ofApp::update() { this->mesh.clear(); if (ofGetFrameNum() % 100 < 50) { this->noise_span = ofMap(ofGetFrameNum() % 100, 0, 50, 0.02, 0.00005); } else { this->noise_span = ofMap(ofGetFrameNum() % 100, 51, 100, 0.00005, 0.02); } float span = 1; ofColor color; for (float x = ofGetWindowWidth() * -0.5 + 30 ; x <= ofGetWindowWidth() * 0.5 - span - 30; x += span) { for (float y = ofGetWindowHeight() * -0.5 + 30; y <= ofGetWindowHeight() * 0.5 - span - 30 ; y += span) { this->mesh.addVertex(glm::vec3(x, y, 0)); this->mesh.addVertex(glm::vec3(x + span, y, 0)); this->mesh.addVertex(glm::vec3(x + span, y + span, 0)); this->mesh.addVertex(glm::vec3(x, y + span, 0)); for (int i = this->mesh.getNumVertices() - 4; i < this->mesh.getNumVertices(); i++) { auto noise_location = this->mesh.getVertex(i) * this->noise_span; auto noise_value = ofMap(ofNoise(noise_location.x, noise_location.y, ofGetFrameNum() * 0.06), 0, 1, 0, 4); int int_noise_value = noise_value; float param = noise_value - int_noise_value; param = abs(param - 0.5); auto alpha = param < 0.3 ? ofMap(param, 0, 0.3, 255, 0) : 0; color.setHsb(ofMap(int_noise_value, 0, 4, 0, 255), 200, 255); this->mesh.addColor(ofColor(color, alpha)); } this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 2); this->mesh.addIndex(this->mesh.getNumVertices() - 3); this->mesh.addIndex(this->mesh.getNumVertices() - 1); this->mesh.addIndex(this->mesh.getNumVertices() - 3); this->mesh.addIndex(this->mesh.getNumVertices() - 4); } } } //-------------------------------------------------------------- void ofApp::draw() { ofTranslate(ofGetWindowSize() * 0.5); this->mesh.draw(); /* int start = 50 + 18; if (ofGetFrameNum() > start) { ostringstream os; os << setw(4) << setfill('0') << ofGetFrameNum() - start; ofImage image; image.grabScreen(0, 0, ofGetWidth(), ofGetHeight()); image.saveImage("image/cap/img_" + os.str() + ".jpg"); if (ofGetFrameNum() - start >= 25 * 20) { std::exit(1); } } */ } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |