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ひし形を切り替える。
Switching rhombus.
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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 mouseEntered(int x, int y) {}; void mouseExited(int x, int y) {}; 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(30); ofSetWindowTitle("openframeworks"); ofBackground(255); ofSetLineWidth(2); 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() { ofSeedRandom(39); this->fbo.begin(); ofClear(0); ofTranslate(ofGetWindowSize() * 0.5); int span = 40; for (int x = span * -8; x < span * 8; x += span) { for (int y = span * -8; y < span * 8; y += span) { vector<glm::vec2> vertices; int r = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0035), 0, 1, 0, 4); auto location = glm::vec2(x, y); if (r == 1) { location += glm::vec2(span, 0); } else if (r == 2) { location += glm::vec2(span, span); } else if (r == 3) { location += glm::vec2(0, span); } int deg_start = r * 90; int radius = span; for (int deg = deg_start; deg <= deg_start + 90; deg += 45) { vertices.push_back(location + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD))); } r = (r + 2) % 4; location = glm::vec2(x, y); if (r == 1) { location += glm::vec2(span, 0); } else if (r == 2) { location += glm::vec2(span, span); } else if (r == 3) { location += glm::vec2(0, span); } deg_start = r * 90; for (int deg = deg_start; deg <= deg_start + 90; deg += 45) { vertices.push_back(location + glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD))); } ofSetColor(0); ofNoFill(); ofBeginShape(); ofVertices(vertices); ofEndShape(true); } } this->fbo.end(); this->fbo.readToPixels(this->pixels); cv::Mat gray_mat, bit_mat; cv::cvtColor(this->pixels_mat, gray_mat, cv::COLOR_RGB2GRAY); for (int y = 0; y < this->pixels_mat.cols; y++) { for (int x = 0; x < this->pixels_mat.rows; x++) { if (gray_mat.at<unsigned char>(y, x) > 0) { this->pixels_mat.at<cv::Vec4b>(y, x) = cv::Vec4b(139, 139, 139, 255); } } } cv::GaussianBlur(this->pixels_mat, this->pixels_mat, cv::Size(19, 19), 10, 10); } //-------------------------------------------------------------- void ofApp::draw() { ofSetColor(255); ofImage draw_image; draw_image.setFromPixels(this->pixels); draw_image.draw(0, 0); this->fbo.draw(-10, -10); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |