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WebCameraの映像をリアルタイムでぐねんぐねん。
Rotating web camera image.
[ Source ]
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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) {}; cv::VideoCapture cap; cv::Mat frame; ofEasyCam cam; ofMesh mesh; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openframeworks"); ofBackground(239); ofSetColor(39); ofEnableDepthTest(); this->cap.open(0); this->cap.set(cv::CAP_PROP_FPS, 30); this->cap.set(cv::CAP_PROP_FRAME_WIDTH, 640); this->cap.set(cv::CAP_PROP_FRAME_HEIGHT, 360); } //-------------------------------------------------------------- void ofApp::update() { this->cap >> this->frame; cv::flip(this->frame, this->frame, -1); cv::cvtColor(this->frame, this->frame, cv::COLOR_BGR2RGB); this->mesh.clear(); int span = 1; for (int x = 0; x < this->frame.cols; x += span) { for (int y = 0; y < this->frame.rows; y += span) { glm::vec3 vertex = glm::vec3(x, y, 0) - glm::vec3(320, 180, 0); auto angle = ofMap(ofNoise(vertex.y * 0.005 + ofGetFrameNum() * 0.05), 0, 1, -PI, PI); auto rotation = glm::rotate(glm::mat4(), angle, glm::vec3(1, 0, 0)); vertex = glm::vec4(vertex, 0) * rotation; cv::Vec3b tmp = this->frame.at<cv::Vec3b>(y, x); auto color = ofColor(tmp[0], tmp[1], tmp[2]); this->mesh.addVertex(vertex); this->mesh.addColor(color); } } int cols = this->frame.rows / span; int rows = this->frame.cols / span; for (int col = 1; col < cols; col++) { for (int row = 1; row < rows; row++) { this->mesh.addIndex(col + row * cols); this->mesh.addIndex((col - 1) + (row - 1) * cols); this->mesh.addIndex((col - 1) + row * cols); this->mesh.addIndex(col + row * cols); this->mesh.addIndex((col - 1) + (row - 1) * cols); this->mesh.addIndex(col + (row - 1) * cols); } } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); this->mesh.draw(); this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |