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Waving on rectangle.
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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) {}; glm::vec2 make_point(int len, int param); ofEasyCam cam; ofMesh face, line; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetColor(39); ofSetLineWidth(1.5); ofEnableDepthTest(); this->line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(39); this->face.clear(); this->line.clear(); auto len = 50; auto noise_param = ofRandom(1000); for (int param = 0; param < 200; param += 1) { int height = ofMap(ofNoise(noise_param, param * 0.05 - ofGetFrameNum() * 0.03), 0, 1, 10, ofMap(param, 0, 500, 30, 100)); vector<glm::vec3> vertices; vertices.push_back(glm::vec3(this->make_point(len, param), 0)); vertices.push_back(glm::vec3(this->make_point(len, param + 1), 0)); vertices.push_back(glm::vec3(this->make_point(len, param + 1), height)); vertices.push_back(glm::vec3(this->make_point(len, param), height)); this->face.addVertices(vertices); this->line.addVertices(vertices); this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 2); this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 4); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4); this->line.addIndex(this->line.getNumVertices() - 4); this->line.addIndex(this->line.getNumVertices() - 1); for (int i = 0; i < vertices.size(); i++) { this->face.addColor(ofColor(239, 30, 30)); this->line.addColor(ofColor(39)); } len += 1; } len = 50; noise_param = ofRandom(1000); for (int param = 50; param < 250; param += 1) { int height = ofMap(ofNoise(noise_param, param * 0.05 + ofGetFrameNum() * 0.03), 0, 1, 10, ofMap(param, 0, 500, 30, 100)); vector<glm::vec3> vertices; vertices.push_back(glm::vec3(this->make_point(len, param), 0)); vertices.push_back(glm::vec3(this->make_point(len, param + 1), 0)); vertices.push_back(glm::vec3(this->make_point(len, param + 1), height)); vertices.push_back(glm::vec3(this->make_point(len, param), height)); this->face.addVertices(vertices); this->line.addVertices(vertices); this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 2); this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 1); this->face.addIndex(this->face.getNumVertices() - 3); this->face.addIndex(this->face.getNumVertices() - 4); this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 2); this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 3); this->line.addIndex(this->line.getNumVertices() - 4); this->line.addIndex(this->line.getNumVertices() - 4); this->line.addIndex(this->line.getNumVertices() - 1); for (int i = 0; i < vertices.size(); i++) { this->face.addColor(ofColor(239)); this->line.addColor(ofColor(39)); } len += 1; } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); ofSetColor(239); this->face.draw(); ofSetColor(39); this->line.drawWireframe(); this->cam.end(); } //-------------------------------------------------------------- glm::vec2 ofApp::make_point(int len, int param) { param = param % 100; if (param < 25) { return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5); } else if (param < 50) { return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5)); } else if (param < 75) { return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5); } else { return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5)); } } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |