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グラデーション層。
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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; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(39); ofEnableDepthTest(); } //-------------------------------------------------------------- void ofApp::update() { this->mesh.clear(); float span = 1; ofColor color; for (float y = 30; y < ofGetWindowHeight() - 30; y += span) { this->mesh.addVertex(glm::vec3(30, y, 0)); this->mesh.addVertex(glm::vec3(ofGetWindowWidth() - 30, y, 0)); this->mesh.addVertex(glm::vec3(ofGetWindowWidth() - 30, y + span, 0)); this->mesh.addVertex(glm::vec3(30, y + span, 0)); for (int i = this->mesh.getNumVertices() - 4; i < this->mesh.getNumVertices(); i++) { auto noise_value = ofMap(ofNoise(this->mesh.getVertex(i).y * 0.002, ofGetFrameNum() * 0.005), 0, 1, 0, 5); int int_noise_value = noise_value; float param = noise_value - int_noise_value; param = abs(param - 0.5); color.setHsb(ofMap(int_noise_value, 0, 5, 0, 255), 200, 255, ofMap(param, 0, 0.5, 255, 32)); this->mesh.addColor(color); } 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() { this->mesh.draw(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |