2020年12月 – プログラミング de 落描き

2020年12月31日

Ribbon art. Draw by openFrameworks

[ Video ]

[ About ]
リボン芸。

Ribbon art.

[ Source ]

#pragma once
#include "ofMain.h"

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;

	vector<glm::vec3> location_list;
	vector<ofColor> base_color_list;

	glm::vec3 noise_seed;
	vector<vector<glm::vec3>> log_list;
	vector<ofColor> color_list;
	vector<float> life_list;
	vector<glm::vec3> param_list;

	ofMesh face, frame;
};

#pragma once

#include "ofMain.h"

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;

vector<glm::vec3> location_list;

vector<ofColor> base_color_list;

glm::vec3 noise_seed;

vector<vector<glm::vec3>> log_list;

vector<ofColor> color_list;

vector<float> life_list;

vector<glm::vec3> param_list;

ofMesh face, frame;

};

#include "ofApp.h"	

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

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

	ofBackground(239);
	ofEnableDepthTest();

	this->noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

	ofIcoSpherePrimitive ico_sphere = ofIcoSpherePrimitive(400, 2);
	vector<ofMeshFace> triangles = ico_sphere.getMesh().getUniqueFaces();

	for (int i = 0; i < triangles.size(); i++) {

		auto average = (triangles[i].getVertex(0) + triangles[i].getVertex(1) + triangles[i].getVertex(2)) / 3;
		this->location_list.push_back(average);
	}

	ofColor color;
	vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };
	for (auto hex : hex_list) {

		color.setHex(hex);
		this->base_color_list.push_back(color);
	}

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

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

	int span = 240;
	this->face.clear();
	this->frame.clear();

	if(ofGetFrameNum() % span == 0){

		for (int i = 0; i < this->location_list.size(); i += 1) {

			vector<glm::vec3> log;
			log.push_back(this->location_list[i]);
			this->log_list.push_back(log);
			this->color_list.push_back(this->base_color_list[(int)ofRandom(this->base_color_list.size())]);
			this->life_list.push_back(span);
			glm::vec3 param;
			int p = ofRandom(3);
			if (p < 1) param = glm::vec3(15, 0, 0);
			if (p >= 1 && p < 2) param = glm::vec3(0, 15, 0);
			if (p >= 2 && p < 3) param = glm::vec3(0, 0, 15);
			this->param_list.push_back(param);
		}
	}

	for (int i = this->log_list.size() - 1; i >= 0; i--) {

		this->life_list[i] -= 1;
		if (this->life_list[i] < 0) {

			this->log_list.erase(this->log_list.begin() + i);
			this->color_list.erase(this->color_list.begin() + i);
			this->life_list.erase(this->life_list.begin() + i);
			this->param_list.erase(this->param_list.begin() + i);

			continue;
		}

		auto x = ofMap(ofNoise(glm::vec4(this->log_list[i].back() * 0.002, this->noise_seed.x + ofGetFrameNum() * 0.008)), 0, 1, -25, 25);
		auto y = ofMap(ofNoise(glm::vec4(this->log_list[i].back() * 0.002, this->noise_seed.y + ofGetFrameNum() * 0.008)), 0, 1, -25, 25);
		auto z = ofMap(ofNoise(glm::vec4(this->log_list[i].back() * 0.002, this->noise_seed.z + ofGetFrameNum() * 0.008)), 0, 1, -25, 25);
		this->log_list[i].push_back(this->log_list[i].back() + glm::vec3(x, y, z));
	}

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

		auto start_index = this->frame.getNumVertices();
		auto alpha = this->life_list[i] > 60 ? 255 : ofMap(this->life_list[i], 0, 60, 0, 255);
		for (int k = 0; k < this->log_list[i].size(); k++) {

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

			this->face.addVertex(this->log_list[i][k] + this->param_list[i]);
			this->face.addVertex(this->log_list[i][k] - this->param_list[i]);
			this->face.addColor(ofColor(this->color_list[i], alpha));
			this->face.addColor(ofColor(this->color_list[i], alpha));

			this->frame.addVertex(this->log_list[i][k] + this->param_list[i]);
			this->frame.addVertex(this->log_list[i][k] - this->param_list[i]);
			this->frame.addColor(ofColor(139, alpha));
			this->frame.addColor(ofColor(139, alpha));

			if (k > 0) {

				this->face.addIndex(index + 0); this->face.addIndex(index - 1); this->face.addIndex(index - 2);
				this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index - 1);

				this->frame.addIndex(index); this->frame.addIndex(index - 2);
				this->frame.addIndex(index + 1); this->frame.addIndex(index - 1);
			}
		}

		this->frame.addIndex(start_index + 0); this->frame.addIndex(start_index + 1);
		this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 2);
	}
}

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

	this->cam.begin();
	ofRotateX(180);
	ofRotateY(ofGetFrameNum() * 0.4);

	this->face.drawFaces();
	this->frame.draw();

	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->noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

ofIcoSpherePrimitive ico_sphere = ofIcoSpherePrimitive(400, 2);

vector<ofMeshFace> triangles = ico_sphere.getMesh().getUniqueFaces();

for (int i = 0; i < triangles.size(); i++) {

auto average = (triangles[i].getVertex(0) + triangles[i].getVertex(1) + triangles[i].getVertex(2)) / 3;

this->location_list.push_back(average);

}

ofColor color;

vector<int> hex_list = { 0xef476f, 0xffd166, 0x06d6a0, 0x118ab2, 0x073b4c };

for (auto hex : hex_list) {

color.setHex(hex);

this->base_color_list.push_back(color);

}

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

}

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

void ofApp::update() {

int span = 240;

this->face.clear();

this->frame.clear();

if(ofGetFrameNum() % span == 0){

for (int i = 0; i < this->location_list.size(); i += 1) {

vector<glm::vec3> log;

log.push_back(this->location_list[i]);

this->log_list.push_back(log);

this->color_list.push_back(this->base_color_list[(int)ofRandom(this->base_color_list.size())]);

this->life_list.push_back(span);

glm::vec3 param;

int p = ofRandom(3);

if (p < 1) param = glm::vec3(15, 0, 0);

if (p >= 1 && p < 2) param = glm::vec3(0, 15, 0);

if (p >= 2 && p < 3) param = glm::vec3(0, 0, 15);

this->param_list.push_back(param);

}

for (int i = this->log_list.size() - 1; i >= 0; i--) {

this->life_list[i] -= 1;

if (this->life_list[i] < 0) {

this->log_list.erase(this->log_list.begin() + i);

this->color_list.erase(this->color_list.begin() + i);

this->life_list.erase(this->life_list.begin() + i);

this->param_list.erase(this->param_list.begin() + i);

continue;

}

auto x = ofMap(ofNoise(glm::vec4(this->log_list[i].back() * 0.002, this->noise_seed.x + ofGetFrameNum() * 0.008)), 0, 1, -25, 25);

auto y = ofMap(ofNoise(glm::vec4(this->log_list[i].back() * 0.002, this->noise_seed.y + ofGetFrameNum() * 0.008)), 0, 1, -25, 25);

auto z = ofMap(ofNoise(glm::vec4(this->log_list[i].back() * 0.002, this->noise_seed.z + ofGetFrameNum() * 0.008)), 0, 1, -25, 25);

this->log_list[i].push_back(this->log_list[i].back() + glm::vec3(x, y, z));

}

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

auto start_index = this->frame.getNumVertices();

auto alpha = this->life_list[i] > 60 ? 255 : ofMap(this->life_list[i], 0, 60, 0, 255);

for (int k = 0; k < this->log_list[i].size(); k++) {

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

this->face.addVertex(this->log_list[i][k] + this->param_list[i]);

this->face.addVertex(this->log_list[i][k] - this->param_list[i]);

this->face.addColor(ofColor(this->color_list[i], alpha));

this->frame.addVertex(this->log_list[i][k] + this->param_list[i]);

this->frame.addVertex(this->log_list[i][k] - this->param_list[i]);

this->frame.addColor(ofColor(139, alpha));

if (k > 0) {

this->face.addIndex(index + 0); this->face.addIndex(index - 1); this->face.addIndex(index - 2);

this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index - 1);

this->frame.addIndex(index); this->frame.addIndex(index - 2);

this->frame.addIndex(index + 1); this->frame.addIndex(index - 1);

}

this->frame.addIndex(start_index + 0); this->frame.addIndex(start_index + 1);

this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 2);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

ofRotateY(ofGetFrameNum() * 0.4);

this->face.drawFaces();

this->frame.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20201231

2020年12月30日

Fragmented video. Draw by openFrameworks

[ Video ]

[ About ]
断片的を見る。

Fragmented 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) {};

	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);
	ofSetLineWidth(2);
	ofEnableDepthTest();
	ofDisableArbTex();

	this->cap.open("D:\\MP4\\Pexels Videos 2880.mp4");
	this->cap_size = cv::Size(640, 360);

	this->rect_size = 40;
	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 = 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() {

}

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

	this->cam.begin();
	ofTranslate(this->cap_size.width * -0.5 + 20, this->cap_size.height * -0.5 - 20, -225);

	for (int i = 0; i < this->rect_frames.size(); i += 1) {

		int frame_max = this->number_of_frames;
		for (int frame_index = 0; frame_index < frame_max; frame_index++) {

			auto noise_value = ofNoise(this->cv_rects[i].x * 0.001, (this->cap_size.height - this->cv_rects[i].y) * 0.001, frame_index * 2 * 0.05 + ofGetFrameNum() * 0.1);

			if (noise_value < 0.1) {

				cv::Mat tmp_box_image(this->frame_list[frame_max - frame_index - 1], 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->cap_size.height - this->cv_rects[i].y, frame_index * 2), this->rect_size, this->rect_size, 2);
				this->rect_images[i]->unbind();

				ofSetColor(239);
				ofNoFill();
				ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, frame_index * 2), this->rect_size, this->rect_size, 2);

				ofPopMatrix();
			}
		}
	}

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(2);

ofEnableDepthTest();

ofDisableArbTex();

this->cap.open("D:\\MP4\\Pexels Videos 2880.mp4");

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

this->rect_size = 40;

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 = 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() {

}

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

void ofApp::draw() {

this->cam.begin();

ofTranslate(this->cap_size.width * -0.5 + 20, this->cap_size.height * -0.5 - 20, -225);

for (int i = 0; i < this->rect_frames.size(); i += 1) {

int frame_max = this->number_of_frames;

for (int frame_index = 0; frame_index < frame_max; frame_index++) {

auto noise_value = ofNoise(this->cv_rects[i].x * 0.001, (this->cap_size.height - this->cv_rects[i].y) * 0.001, frame_index * 2 * 0.05 + ofGetFrameNum() * 0.1);

if (noise_value < 0.1) {

cv::Mat tmp_box_image(this->frame_list[frame_max - frame_index - 1], 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->cap_size.height - this->cv_rects[i].y, frame_index * 2), this->rect_size, this->rect_size, 2);

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

ofSetColor(239);

ofNoFill();

ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, frame_index * 2), this->rect_size, this->rect_size, 2);

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20201230

2020年12月29日

Parallel capture. Draw by openFrameworks

[ Video ]

[ About ]
パラレルキャプチャ。

Parallel capture.

[ Source ]

#pragma once
#include "ofMain.h"
#include "opencv2/opencv.hpp"
#include "ofxBox2d.h"

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;

	ofImage image;
	cv::Mat frame;
	ofMesh mesh;

	vector<glm::vec3> draw_location_list;
	vector<int> draw_index_list;

	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dRect>> box2d_rect_list;
	vector<int> box2d_frame_index_list;
	vector<float> box2d_life_list;
};

#pragma once

#include "ofMain.h"

#include "opencv2/opencv.hpp"

#include "ofxBox2d.h"

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;

ofImage image;

cv::Mat frame;

ofMesh mesh;

vector<glm::vec3> draw_location_list;

vector<int> draw_index_list;

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dRect>> box2d_rect_list;

vector<int> box2d_frame_index_list;

vector<float> box2d_life_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(255);
	ofSetLineWidth(3);

	this->cap.open("D:\\MP4\\Pexels Videos 2441067.mp4");
	this->cap_size = cv::Size(128, 72);

	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);

	int skip_frame = 24 * 120;
	this->number_of_frames = this->cap.get(cv::CAP_PROP_FRAME_COUNT) - skip_frame;
	this->cap.set(cv::CAP_PROP_POS_FRAMES, skip_frame);
	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.addVertex(glm::vec3(this->cap_size.width * -0.5, this->cap_size.height * -0.5, 0));
	this->mesh.addVertex(glm::vec3(this->cap_size.width * 0.5,  this->cap_size.height * -0.5, 0));
	this->mesh.addVertex(glm::vec3(this->cap_size.width * 0.5,  this->cap_size.height * 0.5, 0));
	this->mesh.addVertex(glm::vec3(this->cap_size.width * -0.5, this->cap_size.height * 0.5, 0));
	
	this->mesh.addTexCoord(glm::vec3(0, 0, 0));
	this->mesh.addTexCoord(glm::vec3(this->cap_size.width, 0, 0));
	this->mesh.addTexCoord(glm::vec3(this->cap_size.width, this->cap_size.height, 0));
	this->mesh.addTexCoord(glm::vec3(0, this->cap_size.height, 0));

	this->mesh.addIndex(0); mesh.addIndex(1); mesh.addIndex(2);
	this->mesh.addIndex(0); mesh.addIndex(2); mesh.addIndex(3);

	for (int x = 40 + this->cap_size.width * 0.5; x <= ofGetWidth(); x += this->cap_size.width) {

		for (int y = 40 + this->cap_size.height * 0.5; y <= ofGetHeight() * 0.5; y += this->cap_size.height) {

			this->draw_location_list.push_back(glm::vec3(x, y, 0));
			this->draw_index_list.push_back(ofRandom(this->number_of_frames));
		}
	}

	this->box2d.init();
	this->box2d.setGravity(0, 50);
	this->box2d.createBounds();
	this->box2d.setFPS(60);
	this->box2d.registerGrabbing();
}

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

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

		int n = int(ofMap(ofNoise(this->draw_location_list[i].x * 0.5625 * 0.005, this->draw_location_list[i].y * 0.005, ofGetFrameNum() * 0.0005), 0, 1, 0, this->number_of_frames * 3)) % this->number_of_frames;
		this->draw_index_list[i] = n;
	}

	for (int i = this->box2d_rect_list.size() - 1; i > -1; i--) {

		this->box2d_life_list[i] -= 3;
		if (this->box2d_life_list[i] < 0) {

			this->box2d_rect_list.erase(this->box2d_rect_list.begin() + i);
			this->box2d_frame_index_list.erase(this->box2d_frame_index_list.begin() + i);
			this->box2d_life_list.erase(this->box2d_life_list.begin() + i);
		}
	}

	if (ofGetFrameNum() % 12 == 0) {

		int location_index = ofRandom(this->draw_location_list.size());
		int frame_index = this->draw_index_list[location_index];

		auto box2d_rect = make_shared<ofxBox2dRect>();
		box2d_rect->setPhysics(0.5, 0.21, 0.4);
		box2d_rect->setup(this->box2d.getWorld(), this->draw_location_list[location_index].x, this->draw_location_list[location_index].y, this->cap_size.width, this->cap_size.height);

		this->box2d_rect_list.push_back(box2d_rect);
		this->box2d_frame_index_list.push_back(frame_index);
		this->box2d_life_list.push_back(512);
	}

	this->box2d.update();
}

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

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

		this->frame_list[this->draw_index_list[i]].copyTo(this->frame);
		this->image.update();

		ofPushMatrix();
		ofTranslate(this->draw_location_list[i]);

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

		ofSetColor(39);
		ofNoFill();
		ofDrawRectangle(this->cap_size.width * -0.5, this->cap_size.height * -0.5, this->cap_size.width, this->cap_size.height);

		ofPopMatrix();
	}

	for (int i = 0; i < this->box2d_rect_list.size(); i++) {

		this->frame_list[this->box2d_frame_index_list[i]].copyTo(this->frame);
		this->image.update();

		ofPushMatrix();
		ofTranslate(this->box2d_rect_list[i]->getPosition());
		ofRotate(this->box2d_rect_list[i]->getRotation());

		auto alpha = this->box2d_life_list[i] > 255 ? 255 : this->box2d_life_list[i];

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

		ofSetColor(39);
		ofNoFill();
		ofDrawRectangle(this->cap_size.width * -0.5, this->cap_size.height * -0.5, this->cap_size.width, this->cap_size.height);

		ofPopMatrix();
	}
}

//--------------------------------------------------------------
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);

ofSetColor(255);

ofSetLineWidth(3);

this->cap.open("D:\\MP4\\Pexels Videos 2441067.mp4");

this->cap_size = cv::Size(128, 72);

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);

int skip_frame = 24 * 120;

this->number_of_frames = this->cap.get(cv::CAP_PROP_FRAME_COUNT) - skip_frame;

this->cap.set(cv::CAP_PROP_POS_FRAMES, skip_frame);

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.addVertex(glm::vec3(this->cap_size.width * -0.5, this->cap_size.height * -0.5, 0));

this->mesh.addVertex(glm::vec3(this->cap_size.width * 0.5, this->cap_size.height * -0.5, 0));

this->mesh.addVertex(glm::vec3(this->cap_size.width * 0.5, this->cap_size.height * 0.5, 0));

this->mesh.addVertex(glm::vec3(this->cap_size.width * -0.5, this->cap_size.height * 0.5, 0));

this->mesh.addTexCoord(glm::vec3(0, 0, 0));

this->mesh.addTexCoord(glm::vec3(this->cap_size.width, 0, 0));

this->mesh.addTexCoord(glm::vec3(this->cap_size.width, this->cap_size.height, 0));

this->mesh.addTexCoord(glm::vec3(0, this->cap_size.height, 0));

this->mesh.addIndex(0); mesh.addIndex(1); mesh.addIndex(2);

this->mesh.addIndex(0); mesh.addIndex(2); mesh.addIndex(3);

for (int x = 40 + this->cap_size.width * 0.5; x <= ofGetWidth(); x += this->cap_size.width) {

for (int y = 40 + this->cap_size.height * 0.5; y <= ofGetHeight() * 0.5; y += this->cap_size.height) {

this->draw_location_list.push_back(glm::vec3(x, y, 0));

this->draw_index_list.push_back(ofRandom(this->number_of_frames));

}

this->box2d.init();

this->box2d.setGravity(0, 50);

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

}

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

void ofApp::update() {

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

int n = int(ofMap(ofNoise(this->draw_location_list[i].x * 0.5625 * 0.005, this->draw_location_list[i].y * 0.005, ofGetFrameNum() * 0.0005), 0, 1, 0, this->number_of_frames * 3)) % this->number_of_frames;

this->draw_index_list[i] = n;

}

for (int i = this->box2d_rect_list.size() - 1; i > -1; i--) {

this->box2d_life_list[i] -= 3;

if (this->box2d_life_list[i] < 0) {

this->box2d_rect_list.erase(this->box2d_rect_list.begin() + i);

this->box2d_frame_index_list.erase(this->box2d_frame_index_list.begin() + i);

this->box2d_life_list.erase(this->box2d_life_list.begin() + i);

}

if (ofGetFrameNum() % 12 == 0) {

int location_index = ofRandom(this->draw_location_list.size());

int frame_index = this->draw_index_list[location_index];

auto box2d_rect = make_shared<ofxBox2dRect>();

box2d_rect->setPhysics(0.5, 0.21, 0.4);

box2d_rect->setup(this->box2d.getWorld(), this->draw_location_list[location_index].x, this->draw_location_list[location_index].y, this->cap_size.width, this->cap_size.height);

this->box2d_rect_list.push_back(box2d_rect);

this->box2d_frame_index_list.push_back(frame_index);

this->box2d_life_list.push_back(512);

}

this->box2d.update();

}

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

void ofApp::draw() {

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

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

this->image.update();

ofPushMatrix();

ofTranslate(this->draw_location_list[i]);

ofSetColor(255);

ofFill();

this->image.bind();

mesh.draw();

this->image.unbind();

ofSetColor(39);

ofNoFill();

ofDrawRectangle(this->cap_size.width * -0.5, this->cap_size.height * -0.5, this->cap_size.width, this->cap_size.height);

ofPopMatrix();

}

for (int i = 0; i < this->box2d_rect_list.size(); i++) {

this->frame_list[this->box2d_frame_index_list[i]].copyTo(this->frame);

this->image.update();

ofPushMatrix();

ofTranslate(this->box2d_rect_list[i]->getPosition());

ofRotate(this->box2d_rect_list[i]->getRotation());

auto alpha = this->box2d_life_list[i] > 255 ? 255 : this->box2d_life_list[i];

ofSetColor(255, alpha);

ofFill();

this->image.bind();

mesh.draw();

this->image.unbind();

ofSetColor(39);

ofNoFill();

ofDrawRectangle(this->cap_size.width * -0.5, this->cap_size.height * -0.5, this->cap_size.width, this->cap_size.height);

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20201229/

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