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色付き影
Color shadow.
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#pragma once #include "ofMain.h" #include "opencv2/opencv.hpp" 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) {}; ofFbo fbo; ofPixels pixels; cv::Mat pixels_mat; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetLineWidth(3); this->fbo.allocate(ofGetWidth() + 25, ofGetHeight() + 25); this->fbo.readToPixels(this->pixels); // Link pixels And pixels_mat this->pixels_mat = cv::Mat(this->pixels.getHeight(), this->pixels.getWidth(), CV_8UC4, this->pixels.getData()); } //-------------------------------------------------------------- void ofApp::update() { ofSeedRandom(19); this->fbo.begin(); ofClear(0); ofTranslate(this->fbo.getWidth() * 0.5, this->fbo.getHeight() * 0.5); ofColor color; for (int i = 0; i < 8; i++) { auto len = 20; auto radius = ofRandom(50 + i * 30, 80 + i * 25); auto deg_start = ofRandom(360) + ofGetFrameNum() * ofRandom(2, 4); auto deg_end = deg_start + ofRandom(100, 270); vector<glm::vec2> vertices_1, vertices_2; for (int deg = deg_start; deg < deg_end; deg++) { vertices_1.push_back(glm::vec2((radius - len * 0.5) * cos(deg * DEG_TO_RAD), (radius - len * 0.5) * sin(deg * DEG_TO_RAD))); vertices_2.push_back(glm::vec2((radius + len * 0.5) * cos(deg * DEG_TO_RAD), (radius + len * 0.5) * sin(deg * DEG_TO_RAD))); } reverse(vertices_2.begin(), vertices_2.end()); color.setHsb(ofRandom(255), 180, 255); ofSetColor(color); ofBeginShape(); ofVertices(vertices_1); ofVertices(vertices_2); ofEndShape(true); } this->fbo.end(); // Copy Fbo To pixels this->fbo.readToPixels(this->pixels); // Blur Process cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(19, 15), 8, 6); } //-------------------------------------------------------------- void ofApp::draw() { // Draw Shadow ofSetColor(255, 192); ofImage draw_image; draw_image.setFromPixels(this->pixels); draw_image.draw(-5, -5); // Draw Fbo Image ofSetColor(255); this->fbo.draw(-30, -30); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |