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splitting video.
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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) {}; ofEasyCam cam; cv::VideoCapture cap; cv::Size cap_size; ofImage image; cv::Mat frame; vector<cv::Mat> frame_list; int number_of_frames; vector<ofMesh> mesh_list, line_list; }; |
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#include "ofApp.h" //-------------------------------------------------------------- void ofApp::setup() { ofSetFrameRate(60); ofSetWindowTitle("openFrameworks"); ofBackground(239); ofSetLineWidth(3); ofEnableDepthTest(); this->cap_size = cv::Size(960, 540); this->image.allocate(this->cap_size.width, this->cap_size.height, OF_IMAGE_COLOR); this->frame = cv::Mat(cv::Size(this->image.getWidth(), this->image.getHeight()), CV_MAKETYPE(CV_8UC3, this->image.getPixels().getNumChannels()), this->image.getPixels().getData(), 0); this->cap.open("D:\\MP4\\Pexels Videos 2880.mp4"); this->number_of_frames = this->cap.get(cv::CAP_PROP_FRAME_COUNT); for (int i = 0; i < this->number_of_frames; i++) { cv::Mat src, tmp; this->cap >> src; if (src.empty()) { continue; } cv::resize(src, tmp, this->cap_size); cv::cvtColor(tmp, tmp, cv::COLOR_BGR2RGB); this->frame_list.push_back(tmp); } } //-------------------------------------------------------------- void ofApp::update() { int frame_index = (int)(ofGetFrameNum() * 0.42) % this->number_of_frames; this->frame_list[frame_index].copyTo(this->frame); this->image.update(); this->mesh_list.clear(); this->line_list.clear(); float radius = 250; int deg_span = 3; int x_span = 80; for (int x = 0; x < this->cap_size.width; x += x_span) { ofMesh mesh, line; line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES); auto noise_value = ofNoise(x * 0.003 + ofGetFrameNum() * 0.03); int deg_start = 0; if (noise_value < 0.35) { deg_start = ofMap(noise_value, 0, 0.35, -360, 0); } else if (noise_value > 0.65) { deg_start = ofMap(noise_value, 0.65, 1, 0, 360); } for (int deg = deg_start; deg < deg_start + 180; deg += deg_span) { int index = mesh.getNumVertices(); vector<glm::vec3> vertices; vertices.push_back(glm::vec3(x - this->cap_size.width * 0.5, radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD))); vertices.push_back(glm::vec3(x - this->cap_size.width * 0.5, radius * cos((deg + deg_span) * DEG_TO_RAD), radius * sin((deg + deg_span) * DEG_TO_RAD))); vertices.push_back(glm::vec3(x + x_span - this->cap_size.width * 0.5, radius * cos((deg + deg_span) * DEG_TO_RAD), radius * sin((deg + deg_span) * DEG_TO_RAD))); vertices.push_back(glm::vec3(x + x_span - this->cap_size.width * 0.5, radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD))); mesh.addVertices(vertices); int y = ofMap(deg - deg_start, 0, 180, 0, this->cap_size.height); int next_y = ofMap(deg + deg_span - deg_start, 0, 180, 0, this->cap_size.height); mesh.addTexCoord(glm::vec3(x, y, 0)); mesh.addTexCoord(glm::vec3(x, next_y, 0)); mesh.addTexCoord(glm::vec3(x + x_span, next_y, 0)); mesh.addTexCoord(glm::vec3(x + x_span, y, 0)); mesh.addIndex(index + 0); mesh.addIndex(index + 1); mesh.addIndex(index + 2); mesh.addIndex(index + 0); mesh.addIndex(index + 2); mesh.addIndex(index + 3); if (deg_start != 0) { line.addVertices(vertices); line.addIndex(index + 0); line.addIndex(index + 1); line.addIndex(index + 2); line.addIndex(index + 3); } } if (line.getNumVertices() > 0) { line.addIndex(0); line.addIndex(2); line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 3); } this->mesh_list.push_back(mesh); this->line_list.push_back(line); } } //-------------------------------------------------------------- void ofApp::draw() { this->cam.begin(); for (int i = 0; i < this->mesh_list.size(); i++) { float z = (this->mesh_list[i].getVertex(0).z + this->mesh_list[i].getVertex(2).z) / 2; this->image.bind(); ofSetColor(255); this->mesh_list[i].draw(); this->image.unbind(); ofSetColor(39); this->line_list[i].drawWireframe(); } this->cam.end(); } //-------------------------------------------------------------- int main() { ofSetupOpenGL(720, 720, OF_WINDOW); ofRunApp(new ofApp()); } |