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歪んださざ波。
Distorted ripples.
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#pragma once #include "ofMain.h" #include "opencv2/opencv.hpp" /* Ripple */ class Ripple { public: Ripple(); Ripple(glm::vec3 location); void update(); void draw(); bool isDead(); private: glm::vec3 location; float radius; float life; ofColor color; }; /* ofApp */ 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) {}; vector<unique_ptr<Ripple>> ripple_list; ofFbo fbo; ofPixels pixels; cv::Mat pixels_mat; }; |
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#include "ofApp.h" /* Ripple */ //-------------------------------------------------------------- Ripple::Ripple() : Ripple(glm::vec3()) { } //-------------------------------------------------------------- Ripple::Ripple(glm::vec3 location) { this->location = location; this->radius = 1; this->life = 255; this->color.setHsb(ofRandom(255), 255, 230); } //-------------------------------------------------------------- void Ripple::update() { if (this->location.z > 0) { this->location.z = this->location.z > 20 ? this->location.z - 20 : 0; return; } this->radius += 2; this->life -= 3; } //-------------------------------------------------------------- void Ripple::draw() { ofPushMatrix(); ofTranslate(this->location); ofSetColor(this->color); if (this->location.z > 0) { ofDrawLine(glm::vec3(), glm::vec3(0, 0, 30)); } else { if (this->life < 200) { ofSetColor(this->color, ofMap(this->life, 0, 200, 0, 255)); } int deg_span = 60; for (int deg = 0; deg < 360; deg += deg_span) { int next_deg = deg + deg_span; float noise_param = ofMap(ofNoise(glm::vec3( this->location.x + cos(deg * DEG_TO_RAD), this->location.y + sin(deg * DEG_TO_RAD), ofGetFrameNum() * 0.008)), 0, 1, 0, 2); float next_noise_param = ofMap(ofNoise(glm::vec3( this->location.x + cos((deg + deg_span) * DEG_TO_RAD), this->location.y + sin((deg + deg_span) * DEG_TO_RAD), ofGetFrameNum() * 0.008)), 0, 1, 2, 0); vector<glm::vec2> vertices; vertices.push_back(glm::vec2( radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD))); vertices.push_back(glm::vec2( (radius * noise_param) * cos((deg + deg_span * 0.25) * DEG_TO_RAD), (radius * noise_param) * sin((deg + deg_span * 0.25) * DEG_TO_RAD))); vertices.push_back(glm::vec2( (radius * next_noise_param) * cos((next_deg - deg_span * 0.25) * DEG_TO_RAD), (radius * next_noise_param) * sin((next_deg - deg_span * 0.25) * DEG_TO_RAD))); vertices.push_back(glm::vec2( radius * cos(next_deg * DEG_TO_RAD), radius * sin(next_deg * DEG_TO_RAD))); ofNoFill(); ofSetLineWidth(2); ofBeginShape(); ofVertex(vertices[0]); ofBezierVertex(vertices[1], vertices[2], vertices[3]); ofEndShape(); } } ofPopMatrix(); } //-------------------------------------------------------------- bool Ripple::isDead() { return this->life < 0; } /* ofApp */ //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(30); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetLineWidth(3); this->fbo.allocate(ofGetWidth() + 25, ofGetHeight() + 25); this->fbo.readToPixels(this->pixels); this->pixels_mat = cv::Mat(this->pixels.getHeight(), this->pixels.getWidth(), CV_8UC4, this->pixels.getData()); } //-------------------------------------------------------------- void ofApp::update() { if (ofGetFrameNum() % 4 == 0) { glm::vec3 location(ofRandom(100, this->fbo.getWidth() - 100), ofRandom(100, this->fbo.getHeight() - 100), ofRandom(800, 1500)); unique_ptr<Ripple> ripple(new Ripple(location)); this->ripple_list.push_back(move(ripple)); } this->fbo.begin(); ofClear(0); for (int i = this->ripple_list.size() - 1; i >= 0; i--) { if (this->ripple_list[i]->isDead()) { this->ripple_list.erase(this->ripple_list.begin() + i); } else { this->ripple_list[i]->update(); this->ripple_list[i]->draw(); } } this->fbo.end(); this->fbo.readToPixels(this->pixels); cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(11, 11), 10, 10); } //-------------------------------------------------------------- void ofApp::draw() { ofSetColor(255); ofImage draw_image; draw_image.setFromPixels(this->pixels); draw_image.draw(-5, -5); this->fbo.draw(-25, -25); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |