opencv – ページ 13 – プログラミング de 落描き

2020年10月12日2020年10月12日

Square and remixed. Draw by openFrameworks

[ Video ]

[ About ]
Square and remixed.

[ Source ]

#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;
	int number_of_frames;
	vector<cv::Mat> frame_list;

	float rect_size;
	vector<cv::Mat> rect_frames;
	vector<unique_ptr<ofImage>> rect_images;
	vector<cv::Rect> cv_rects;
};

#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;

int number_of_frames;

vector<cv::Mat> frame_list;

float rect_size;

vector<cv::Mat> rect_frames;

vector<unique_ptr<ofImage>> rect_images;

vector<cv::Rect> cv_rects;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofEnableDepthTest();
	ofDisableArbTex();

	this->cap_size = cv::Size(360, 360);
	this->rect_size = 20;
	for (int x = 0; x < this->cap_size.width; x += this->rect_size) {

		for (int y = 0; y < this->cap_size.height; y += this->rect_size) {

			auto image = make_unique<ofImage>();
			image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);
			cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);
			cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);

			this->rect_images.push_back(move(image));
			this->cv_rects.push_back(rect);
			this->rect_frames.push_back(frame);
		}
	}

	this->number_of_frames = 0;
	vector<string> file_path_list = {
		"D:\\MP4\\openframeworks 2020-09-03.mp4",
		"D:\\MP4\\openFrameworks 2020-08-26.mp4",
		"D:\\MP4\\openframeworks 2020-09-29.mp4",
		"D:\\MP4\\openFrameworks 2020-09-18.mp4",
	};

	for (auto& file_path : file_path_list) {

		this->cap.open(file_path);
		int frame_count = this->cap.get(cv::CAP_PROP_FRAME_COUNT);
		for (int i = 0; i < frame_count; 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);
		}

		this->number_of_frames += frame_count;
	}
}

//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);
}

//--------------------------------------------------------------
void ofApp::draw() {

	this->cam.begin();
	ofRotateX(ofGetFrameNum() * 0.43);
	ofRotateY(ofGetFrameNum() * 0.65);

	for (int k = 0; k < 6; k++) {

		if (k > 0 && k < 4) { ofRotateY(90); }
		if (k == 4) { ofRotateX(90); }
		if (k == 5) { ofRotateX(180); }


		float noise_seed = ofRandom(1000);
		for (int i = 0; i < this->rect_frames.size(); i++) {

			int frame_index = ofMap(ofNoise(noise_seed, this->cv_rects[i].x * 0.001, this->cv_rects[i].y * 0.001, ofGetFrameNum() * 0.005), 0, 1, 0, this->number_of_frames);

			cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rects[i]);
			tmp_box_image.copyTo(this->rect_frames[i]);

			this->rect_images[i]->update();
			this->rect_images[i]->getTexture().bind();
			ofSetColor(255);
			ofFill();
			ofDrawBox(glm::vec3(
				this->cv_rects[i].x + this->cv_rects[i].width * 0.5 - this->cap_size.width * 0.5,
				this->cap_size.height - this->cv_rects[i].y - this->cv_rects[i].height * 0.5 - this->cap_size.height * 0.5,
				180),
				this->rect_size, this->rect_size, 5);
			this->rect_images[i]->unbind();

			ofSetColor(39);
			ofNoFill();
			ofDrawBox(glm::vec3(
				this->cv_rects[i].x + this->cv_rects[i].width * 0.5 - this->cap_size.width * 0.5,
				this->cap_size.height - this->cv_rects[i].y - this->cv_rects[i].height * 0.5 - this->cap_size.height * 0.5,
				180),
				this->rect_size, this->rect_size, 5);

		}
	}

	this->cam.end();
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

ofDisableArbTex();

this->cap_size = cv::Size(360, 360);

this->rect_size = 20;

for (int x = 0; x < this->cap_size.width; x += this->rect_size) {

for (int y = 0; y < this->cap_size.height; y += this->rect_size) {

auto image = make_unique<ofImage>();

image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);

cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);

cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);

this->rect_images.push_back(move(image));

this->cv_rects.push_back(rect);

this->rect_frames.push_back(frame);

}

this->number_of_frames = 0;

vector<string> file_path_list = {

"D:\\MP4\\openframeworks 2020-09-03.mp4",

"D:\\MP4\\openFrameworks 2020-08-26.mp4",

"D:\\MP4\\openframeworks 2020-09-29.mp4",

"D:\\MP4\\openFrameworks 2020-09-18.mp4",

};

for (auto& file_path : file_path_list) {

this->cap.open(file_path);

int frame_count = this->cap.get(cv::CAP_PROP_FRAME_COUNT);

for (int i = 0; i < frame_count; 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);

}

this->number_of_frames += frame_count;

}

//--------------------------------------------------------------

void ofApp::update() {

ofSeedRandom(39);

}

//--------------------------------------------------------------

void ofApp::draw() {

this->cam.begin();

ofRotateX(ofGetFrameNum() * 0.43);

ofRotateY(ofGetFrameNum() * 0.65);

for (int k = 0; k < 6; k++) {

if (k > 0 && k < 4) { ofRotateY(90); }

if (k == 4) { ofRotateX(90); }

if (k == 5) { ofRotateX(180); }

float noise_seed = ofRandom(1000);

for (int i = 0; i < this->rect_frames.size(); i++) {

int frame_index = ofMap(ofNoise(noise_seed, this->cv_rects[i].x * 0.001, this->cv_rects[i].y * 0.001, ofGetFrameNum() * 0.005), 0, 1, 0, this->number_of_frames);

cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rects[i]);

tmp_box_image.copyTo(this->rect_frames[i]);

this->rect_images[i]->update();

this->rect_images[i]->getTexture().bind();

ofSetColor(255);

ofFill();

ofDrawBox(glm::vec3(

this->cv_rects[i].x + this->cv_rects[i].width * 0.5 - this->cap_size.width * 0.5,

this->cap_size.height - this->cv_rects[i].y - this->cv_rects[i].height * 0.5 - this->cap_size.height * 0.5,

180),

this->rect_size, this->rect_size, 5);

this->rect_images[i]->unbind();

ofSetColor(39);

ofNoFill();

ofDrawBox(glm::vec3(

this->cv_rects[i].x + this->cv_rects[i].width * 0.5 - this->cap_size.width * 0.5,

this->cap_size.height - this->cv_rects[i].y - this->cv_rects[i].height * 0.5 - this->cap_size.height * 0.5,

180),

this->rect_size, this->rect_size, 5);

}

this->cam.end();

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20201012

2020年10月9日2020年10月9日

Different progression of frame number. Draw by openFrameworks

[ Video ]

[ About ]
フレーム番号の進行が異なる動画。

Different progression of frame number.

[ Source ]

#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::Size cap_size;
	int number_of_frames;
	vector<cv::Mat> frame_list;

	float rect_size;
	vector<cv::Mat> rect_frames;
	vector<int> frame_number_list;
	vector<unique_ptr<ofImage>> rect_images;
	vector<cv::Rect> cv_rects;
};

#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::Size cap_size;

int number_of_frames;

vector<cv::Mat> frame_list;

float rect_size;

vector<cv::Mat> rect_frames;

vector<int> frame_number_list;

vector<unique_ptr<ofImage>> rect_images;

vector<cv::Rect> cv_rects;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofSetColor(255);

	this->cap.open("D:\\MP4\\Pexels Videos 2921.mp4");
	this->cap_size = cv::Size(1280, 720);

	this->rect_size = 10;
	for (int x = 0; x < this->cap_size.width; x += this->rect_size) {

		for (int y = 0; y < this->cap_size.height; y += this->rect_size) {

			auto image = make_unique<ofImage>();
			image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);
			cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);
			cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);

			this->rect_images.push_back(move(image));
			this->cv_rects.push_back(rect);
			this->rect_frames.push_back(frame);
			this->frame_number_list.push_back(0);
		}
	}

	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()) {

			return;
		}

		cv::resize(src, tmp, this->cap_size);
		cv::cvtColor(tmp, tmp, cv::COLOR_BGR2RGB);

		this->frame_list.push_back(tmp);
	}
}

//--------------------------------------------------------------
void ofApp::update() {

	for (int i = 0; i < this->rect_images.size(); i++) {

		int tmp = ofMap(ofNoise(this->cv_rects[i].x * 0.0005, this->cv_rects[i].y * 0.0005, ofGetFrameNum() * 0.008), 0, 1, 1, 3);
		this->frame_number_list[i] = (this->frame_number_list[i] + tmp) % this->number_of_frames;
		cv::Mat tmp_box_image(this->frame_list[this->frame_number_list[i]], this->cv_rects[i]);
		tmp_box_image.copyTo(this->rect_frames[i]);

		this->rect_images[i]->update();
	}
}

//--------------------------------------------------------------
void ofApp::draw() {

	for (int i = 0; i < this->rect_images.size(); i++) {

		this->rect_images[i]->draw(this->cv_rects[i].x, this->cv_rects[i].y);
	}
}

//========================================================================
int main() {

	ofSetupOpenGL(1280, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetColor(255);

this->cap.open("D:\\MP4\\Pexels Videos 2921.mp4");

this->cap_size = cv::Size(1280, 720);

this->rect_size = 10;

for (int x = 0; x < this->cap_size.width; x += this->rect_size) {

for (int y = 0; y < this->cap_size.height; y += this->rect_size) {

auto image = make_unique<ofImage>();

image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);

cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);

cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);

this->rect_images.push_back(move(image));

this->cv_rects.push_back(rect);

this->rect_frames.push_back(frame);

this->frame_number_list.push_back(0);

}

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()) {

return;

}

cv::resize(src, tmp, this->cap_size);

cv::cvtColor(tmp, tmp, cv::COLOR_BGR2RGB);

this->frame_list.push_back(tmp);

}

//--------------------------------------------------------------

void ofApp::update() {

for (int i = 0; i < this->rect_images.size(); i++) {

int tmp = ofMap(ofNoise(this->cv_rects[i].x * 0.0005, this->cv_rects[i].y * 0.0005, ofGetFrameNum() * 0.008), 0, 1, 1, 3);

this->frame_number_list[i] = (this->frame_number_list[i] + tmp) % this->number_of_frames;

cv::Mat tmp_box_image(this->frame_list[this->frame_number_list[i]], this->cv_rects[i]);

tmp_box_image.copyTo(this->rect_frames[i]);

this->rect_images[i]->update();

}

//--------------------------------------------------------------

void ofApp::draw() {

for (int i = 0; i < this->rect_images.size(); i++) {

this->rect_images[i]->draw(this->cv_rects[i].x, this->cv_rects[i].y);

}

//========================================================================

int main() {

ofSetupOpenGL(1280, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20201009

2020年9月27日2020年9月27日

Twisting video. Draw by openFrameworks

[ Video ]

[ About ]
Twisting video.

[ Source ]

#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::Size cap_size;
	cv::Mat frame;
	ofImage image;
	int number_of_frames;
	vector<cv::Mat> frame_list;

	ofEasyCam cam;
	ofMesh mesh, mesh_frame;
};

#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::Size cap_size;

cv::Mat frame;

ofImage image;

int number_of_frames;

vector<cv::Mat> frame_list;

ofEasyCam cam;

ofMesh mesh, mesh_frame;

};

#include "ofApp.h"

//--------------------------------------------------------------
void ofApp::setup() {

	ofSetFrameRate(60);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofEnableDepthTest();

	this->cap.open("D:\\MP4\\production ID_3761468.mp4");
	this->cap_size = cv::Size(640, 360);

	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->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);
	}

	this->mesh_frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

//--------------------------------------------------------------
void ofApp::update() {

	this->mesh.clear();
	this->mesh_frame.clear();

	int n = (int)(ofGetFrameNum() * 0.54) % this->number_of_frames;
	this->frame_list[n].copyTo(this->frame);
	this->image.update();

	int span = 10;
	for (int x = this->cap_size.width * -0.5; x < this->cap_size.width * 0.5; x += span) {

		auto angle = ofMap(ofNoise(x * 0.003 + ofGetFrameNum() * 0.02), 0, 1, -PI * 2, PI * 2);
		auto rotation = glm::rotate(glm::mat4(), angle, glm::vec3(1, 0, 0));

		auto next_angle = ofMap(ofNoise((x + span) * 0.003 + ofGetFrameNum() * 0.02), 0, 1, -PI * 2, PI * 2);
		auto next_rotation = glm::rotate(glm::mat4(), next_angle, glm::vec3(1, 0, 0));

		for (int y = this->cap_size.height * -0.5; y < this->cap_size.height * 0.5; y += span) {

			int index = this->mesh.getNumVertices();

			vector<glm::vec3> vertices;
			vertices.push_back(glm::vec4(x, y, 0, 0) * rotation);
			vertices.push_back(glm::vec4(x + span, y, 0, 0) * next_rotation);
			vertices.push_back(glm::vec4(x + span, y + span, 0, 0) * next_rotation);
			vertices.push_back(glm::vec4(x, y + span, 0, 0) * rotation);

			this->mesh.addVertices(vertices);

			this->mesh.addTexCoord(glm::vec3(x + this->cap_size.width * 0.5, y + this->cap_size.height * 0.5, 0));
			this->mesh.addTexCoord(glm::vec3(x + span + this->cap_size.width * 0.5, y + this->cap_size.height * 0.5, 0));
			this->mesh.addTexCoord(glm::vec3(x + span + this->cap_size.width * 0.5, y + span + this->cap_size.height * 0.5, 0));
			this->mesh.addTexCoord(glm::vec3(x + this->cap_size.width * 0.5, y + span + this->cap_size.height * 0.5, 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 (x == this->cap_size.width * -0.5) {

				int mesh_frame_index = this->mesh_frame.getNumVertices();

				this->mesh_frame.addVertex(vertices[0]);
				this->mesh_frame.addVertex(vertices[3]);

				this->mesh_frame.addIndex(mesh_frame_index + 0);
				this->mesh_frame.addIndex(mesh_frame_index + 1);
			}

			if (x == this->cap_size.width * 0.5 - span) {

				int mesh_frame_index = this->mesh_frame.getNumVertices();

				this->mesh_frame.addVertex(vertices[1]);
				this->mesh_frame.addVertex(vertices[2]);

				this->mesh_frame.addIndex(mesh_frame_index + 0);
				this->mesh_frame.addIndex(mesh_frame_index + 1);
			}

			if (y == this->cap_size.height * -0.5) {

				int mesh_frame_index = this->mesh_frame.getNumVertices();

				this->mesh_frame.addVertex(vertices[0]);
				this->mesh_frame.addVertex(vertices[1]);

				this->mesh_frame.addIndex(mesh_frame_index + 0);
				this->mesh_frame.addIndex(mesh_frame_index + 1);
			}

			if (y == this->cap_size.height * 0.5 - span) {

				int mesh_frame_index = this->mesh_frame.getNumVertices();

				this->mesh_frame.addVertex(vertices[2]);
				this->mesh_frame.addVertex(vertices[3]);

				this->mesh_frame.addIndex(mesh_frame_index + 0);
				this->mesh_frame.addIndex(mesh_frame_index + 1);
			}
		}
	}
}

//--------------------------------------------------------------
void ofApp::draw() {

	this->cam.begin();
	ofRotateX(180);

	ofSetColor(255);
	this->image.bind();
	this->mesh.draw();
	this->image.unbind();

	ofSetColor(39);
	this->mesh_frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
int main() {

	ofSetupOpenGL(720, 720, OF_WINDOW);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

//--------------------------------------------------------------

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofEnableDepthTest();

this->cap.open("D:\\MP4\\production ID_3761468.mp4");

this->cap_size = cv::Size(640, 360);

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->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);

}

this->mesh_frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

}

//--------------------------------------------------------------

void ofApp::update() {

this->mesh.clear();

this->mesh_frame.clear();

int n = (int)(ofGetFrameNum() * 0.54) % this->number_of_frames;

this->frame_list[n].copyTo(this->frame);

this->image.update();

int span = 10;

for (int x = this->cap_size.width * -0.5; x < this->cap_size.width * 0.5; x += span) {

auto angle = ofMap(ofNoise(x * 0.003 + ofGetFrameNum() * 0.02), 0, 1, -PI * 2, PI * 2);

auto rotation = glm::rotate(glm::mat4(), angle, glm::vec3(1, 0, 0));

auto next_angle = ofMap(ofNoise((x + span) * 0.003 + ofGetFrameNum() * 0.02), 0, 1, -PI * 2, PI * 2);

auto next_rotation = glm::rotate(glm::mat4(), next_angle, glm::vec3(1, 0, 0));

for (int y = this->cap_size.height * -0.5; y < this->cap_size.height * 0.5; y += span) {

int index = this->mesh.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec4(x, y, 0, 0) * rotation);

vertices.push_back(glm::vec4(x + span, y, 0, 0) * next_rotation);

vertices.push_back(glm::vec4(x + span, y + span, 0, 0) * next_rotation);

vertices.push_back(glm::vec4(x, y + span, 0, 0) * rotation);

this->mesh.addVertices(vertices);

this->mesh.addTexCoord(glm::vec3(x + this->cap_size.width * 0.5, y + this->cap_size.height * 0.5, 0));

this->mesh.addTexCoord(glm::vec3(x + span + this->cap_size.width * 0.5, y + this->cap_size.height * 0.5, 0));

this->mesh.addTexCoord(glm::vec3(x + span + this->cap_size.width * 0.5, y + span + this->cap_size.height * 0.5, 0));

this->mesh.addTexCoord(glm::vec3(x + this->cap_size.width * 0.5, y + span + this->cap_size.height * 0.5, 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 (x == this->cap_size.width * -0.5) {

int mesh_frame_index = this->mesh_frame.getNumVertices();

this->mesh_frame.addVertex(vertices[0]);

this->mesh_frame.addVertex(vertices[3]);

this->mesh_frame.addIndex(mesh_frame_index + 0);

this->mesh_frame.addIndex(mesh_frame_index + 1);

}

if (x == this->cap_size.width * 0.5 - span) {

int mesh_frame_index = this->mesh_frame.getNumVertices();

this->mesh_frame.addVertex(vertices[1]);

this->mesh_frame.addVertex(vertices[2]);

this->mesh_frame.addIndex(mesh_frame_index + 0);

this->mesh_frame.addIndex(mesh_frame_index + 1);

}

if (y == this->cap_size.height * -0.5) {

int mesh_frame_index = this->mesh_frame.getNumVertices();

this->mesh_frame.addVertex(vertices[0]);

this->mesh_frame.addVertex(vertices[1]);

this->mesh_frame.addIndex(mesh_frame_index + 0);

this->mesh_frame.addIndex(mesh_frame_index + 1);

}

if (y == this->cap_size.height * 0.5 - span) {

int mesh_frame_index = this->mesh_frame.getNumVertices();

this->mesh_frame.addVertex(vertices[2]);

this->mesh_frame.addVertex(vertices[3]);

this->mesh_frame.addIndex(mesh_frame_index + 0);

this->mesh_frame.addIndex(mesh_frame_index + 1);

}

//--------------------------------------------------------------

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

ofSetColor(255);

this->image.bind();

this->mesh.draw();

this->image.unbind();

ofSetColor(39);

this->mesh_frame.drawWireframe();

this->cam.end();

}

//--------------------------------------------------------------

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200927

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