junkiyoshi – ページ 484 – プログラミング de 落描き

2021年9月13日2021年9月13日

Erase overlapping. Draw by openFrameworks

[ Video ]

[ About ]
ofFboに3枚の画像を描いて、shaderで重なった部分を消す。

Draw three images on the ofFbo and use the shader to remove the overlapping parts.

[ 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) {};

	void draw_arrow(glm::vec2 location, glm::vec2 next_location, float size);

	ofShader shader;
	ofFbo fbo1;
	ofFbo fbo2;
	ofFbo fbo3;
};

#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) {};

void draw_arrow(glm::vec2 location, glm::vec2 next_location, float size);

ofShader shader;

ofFbo fbo1;

ofFbo fbo2;

ofFbo fbo3;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(0);

	this->shader.load("shader/shader.vert", "shader/shader.frag");
	this->fbo1.allocate(ofGetWidth(), ofGetHeight());
	this->fbo2.allocate(ofGetWidth(), ofGetHeight());
	this->fbo3.allocate(ofGetWidth(), ofGetHeight());
}

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

	ofSeedRandom(39);

	vector<glm::vec2> location_list;
	vector<glm::vec2> next_list;

	this->fbo1.begin();
	ofClear(0);
	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
	
	for (int i = 0; i < 3; i++) {

		auto deg = ofGetFrameNum() + i * 120;
		auto location = glm::vec2(230 * cos(deg * DEG_TO_RAD), 230 * sin(deg * DEG_TO_RAD));
		auto next = glm::vec2(230 * cos((deg + 1) * DEG_TO_RAD), 230 * sin((deg + 1) *DEG_TO_RAD));

		location_list.push_back(location);
		next_list.push_back(next);
	}

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

		this->draw_arrow(location_list[i], next_list[i], 120);
	}

	this->fbo1.end();

	this->fbo2.begin();
	ofClear(0);
	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

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

		auto location = location_list[i];
		auto next = next_list[i];

		int range = 120;
		for (int k = 0; k < 10; k++) {

			auto child_noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
			auto child_location = location + glm::vec2(ofMap(ofNoise(child_noise_seed.x, ofGetFrameNum() * 0.01), 0, 1, -range, range), ofMap(ofNoise(child_noise_seed.y, ofGetFrameNum() * 0.01), 0, 1, -range, range));
			auto child_next = next + glm::vec2(ofMap(ofNoise(child_noise_seed.x, (ofGetFrameNum() + 1) * 0.01), 0, 1, -range, range), ofMap(ofNoise(child_noise_seed.y, (ofGetFrameNum() + 1) * 0.01), 0, 1, -range, range));

			this->draw_arrow(child_location, child_next, 30);

		}
	}

	this->fbo2.end();

	this->fbo3.begin();
	ofClear(0);
	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	int out = 600;
	int in = 500;

	ofBeginShape();
	ofVertex(out * -0.5, out * -0.5);
	ofVertex(out *  0.5, out * -0.5);
	ofVertex(out *  0.5, out *  0.5);
	ofVertex(out * -0.5, out *  0.5);
	ofNextContour(true);
	ofVertex(in * -0.5, in * -0.5);
	ofVertex(in *  0.5, in * -0.5);
	ofVertex(in *  0.5, in *  0.5);
	ofVertex(in * -0.5, in *  0.5);

	ofEndShape();

	this->fbo3.end();
}

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

	ofFill();
	this->shader.begin();
	this->shader.setUniform1f("time", ofGetElapsedTimef());
	this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());
	this->shader.setUniformTexture("tex1", this->fbo1.getTexture(), 1);
	this->shader.setUniformTexture("tex2", this->fbo2.getTexture(), 2);
	this->shader.setUniformTexture("tex3", this->fbo3.getTexture(), 3);

	ofDrawRectangle(glm::vec2(0, 0), ofGetWidth(), ofGetHeight());

	this->shader.end();
}

//--------------------------------------------------------------
void ofApp::draw_arrow(glm::vec2 location, glm::vec2 next_location, float size) {

	auto angle = std::atan2(next_location.y - location.y, next_location.x - location.x);

	ofFill();
	ofBeginShape();
	ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle)));
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));
	ofEndShape();

	ofBeginShape();
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);
	ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);
	ofEndShape();
}

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

	ofGLWindowSettings settings;
	settings.setGLVersion(3, 2);
	settings.setSize(720, 720);
	ofCreateWindow(settings);
	ofRunApp(new ofApp());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(0);

this->shader.load("shader/shader.vert", "shader/shader.frag");

this->fbo1.allocate(ofGetWidth(), ofGetHeight());

this->fbo2.allocate(ofGetWidth(), ofGetHeight());

this->fbo3.allocate(ofGetWidth(), ofGetHeight());

}

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

void ofApp::update() {

ofSeedRandom(39);

vector<glm::vec2> location_list;

vector<glm::vec2> next_list;

this->fbo1.begin();

ofClear(0);

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

for (int i = 0; i < 3; i++) {

auto deg = ofGetFrameNum() + i * 120;

auto location = glm::vec2(230 * cos(deg * DEG_TO_RAD), 230 * sin(deg * DEG_TO_RAD));

auto next = glm::vec2(230 * cos((deg + 1) * DEG_TO_RAD), 230 * sin((deg + 1) *DEG_TO_RAD));

location_list.push_back(location);

next_list.push_back(next);

}

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

this->draw_arrow(location_list[i], next_list[i], 120);

}

this->fbo1.end();

this->fbo2.begin();

ofClear(0);

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

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

auto location = location_list[i];

auto next = next_list[i];

int range = 120;

for (int k = 0; k < 10; k++) {

auto child_noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

auto child_location = location + glm::vec2(ofMap(ofNoise(child_noise_seed.x, ofGetFrameNum() * 0.01), 0, 1, -range, range), ofMap(ofNoise(child_noise_seed.y, ofGetFrameNum() * 0.01), 0, 1, -range, range));

auto child_next = next + glm::vec2(ofMap(ofNoise(child_noise_seed.x, (ofGetFrameNum() + 1) * 0.01), 0, 1, -range, range), ofMap(ofNoise(child_noise_seed.y, (ofGetFrameNum() + 1) * 0.01), 0, 1, -range, range));

this->draw_arrow(child_location, child_next, 30);

}

this->fbo2.end();

this->fbo3.begin();

ofClear(0);

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

int out = 600;

int in = 500;

ofBeginShape();

ofVertex(out * -0.5, out * -0.5);

ofVertex(out * 0.5, out * -0.5);

ofVertex(out * 0.5, out * 0.5);

ofVertex(out * -0.5, out * 0.5);

ofNextContour(true);

ofVertex(in * -0.5, in * -0.5);

ofVertex(in * 0.5, in * -0.5);

ofVertex(in * 0.5, in * 0.5);

ofVertex(in * -0.5, in * 0.5);

ofEndShape();

this->fbo3.end();

}

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

void ofApp::draw() {

ofFill();

this->shader.begin();

this->shader.setUniform1f("time", ofGetElapsedTimef());

this->shader.setUniform2f("resolution", ofGetWidth(), ofGetHeight());

this->shader.setUniformTexture("tex1", this->fbo1.getTexture(), 1);

this->shader.setUniformTexture("tex2", this->fbo2.getTexture(), 2);

this->shader.setUniformTexture("tex3", this->fbo3.getTexture(), 3);

ofDrawRectangle(glm::vec2(0, 0), ofGetWidth(), ofGetHeight());

this->shader.end();

}

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

void ofApp::draw_arrow(glm::vec2 location, glm::vec2 next_location, float size) {

auto angle = std::atan2(next_location.y - location.y, next_location.x - location.x);

ofFill();

ofBeginShape();

ofVertex(location + glm::vec2(size * cos(angle), size * sin(angle)));

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)));

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)));

ofEndShape();

ofBeginShape();

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle + PI * 0.5), size * 0.5 * sin(angle + PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25 - glm::vec2(size * cos(angle), size * sin(angle)) * 0.5);

ofVertex(location + glm::vec2(size * 0.5 * cos(angle - PI * 0.5), size * 0.5 * sin(angle - PI * 0.5)) * 0.25);

ofEndShape();

}

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

int main() {

ofGLWindowSettings settings;

settings.setGLVersion(3, 2);

settings.setSize(720, 720);

ofCreateWindow(settings);

ofRunApp(new ofApp());

}

#version 150

uniform mat4 modelViewProjectionMatrix;
in vec4 position;

void main(){
	gl_Position = modelViewProjectionMatrix * position;
}

#version 150

uniform mat4 modelViewProjectionMatrix;

in vec4 position;

void main(){

gl_Position = modelViewProjectionMatrix * position;

}

#version 150

uniform float time;
uniform vec2 resolution;
uniform sampler2DRect tex1;
uniform sampler2DRect tex2;
uniform sampler2DRect tex3;

in vec2 texCoordVarying;
out vec4 outputColor;

void main() {

  vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  vec4 t3 = texture(tex3, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));
  
  vec4 c;
  if((t1 == t2 && t1 == t3) || (t1 == t2 && t3 == vec4(0.0)) || (t2 == t3 && t1 == vec4(0.0)) || (t1 == t3 && t2 == vec4(0.0))){
  
	c = vec4(vec3(0.937), 1.0);
  }else{

  	c = vec4(vec3(0.153), 1.0);
  }
  
  outputColor = c;
}

#version 150

uniform float time;

uniform vec2 resolution;

uniform sampler2DRect tex1;

uniform sampler2DRect tex2;

uniform sampler2DRect tex3;

in vec2 texCoordVarying;

out vec4 outputColor;

void main() {

vec4 t1 = texture(tex1, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 t2 = texture(tex2, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 t3 = texture(tex3, vec2(gl_FragCoord.x, resolution.y - gl_FragCoord.y));

vec4 c;

if((t1 == t2 && t1 == t3) || (t1 == t2 && t3 == vec4(0.0)) || (t2 == t3 && t1 == vec4(0.0)) || (t1 == t3 && t2 == vec4(0.0))){

c = vec4(vec3(0.937), 1.0);

}else{

c = vec4(vec3(0.153), 1.0);

}

outputColor = c;

}

[ Link ]
https://github.com/junkiyoshi/Insta20210913

2021年9月12日

Best cat. Draw by openFrameworks

[ Video ]

[ About ]
２つの動画をつなげて、部位ごとにノイズ関数で再生するフレームを変える。

Connect two videos together and change the frame to be played by the noise function for each part.

[ 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(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 = 0;
	vector<string> file_path_list = { "D:\\mp4\\MOV_0324.mp4", "D:\\mp4\\MOV_0332.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();
	ofTranslate(this->cap_size.width * -0.5, this->cap_size.height * -0.5, 0);

	for (int k = 0; k < 2; k++) {

		ofPushMatrix();
		ofTranslate(this->rect_size * 0.5, k * this->cap_size.height * 1.1 - this->cap_size.height * 0.55 - this->rect_size * 0.5, 0);

		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 * 0.0005, this->cv_rects[i].y * 0.0005, 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->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5);
			this->rect_images[i]->unbind();

			ofSetColor(39);
			ofNoFill();
			ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5);

		}

		ofPopMatrix();
	}

	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(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 = 0;

vector<string> file_path_list = { "D:\\mp4\\MOV_0324.mp4", "D:\\mp4\\MOV_0332.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();

ofTranslate(this->cap_size.width * -0.5, this->cap_size.height * -0.5, 0);

for (int k = 0; k < 2; k++) {

ofPushMatrix();

ofTranslate(this->rect_size * 0.5, k * this->cap_size.height * 1.1 - this->cap_size.height * 0.55 - this->rect_size * 0.5, 0);

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 * 0.0005, this->cv_rects[i].y * 0.0005, 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->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5);

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

ofSetColor(39);

ofNoFill();

ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5);

}

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210912

2021年9月11日2021年9月11日

Black and white spirals. Draw by openFrameworks

[ Video ]

[ About ]
螺旋の間隔で塗る色と線の色を変える。

Change the color of the paint and the color of the lines at intervals of the spiral.

[ 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) {};

	int gon;
	vector<float> gap_list;
	vector<ofColor> color_list;
};

#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) {};

int gon;

vector<float> gap_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(1);

	this->gon = 10;
	for (auto i = 0; i < this->gon; i++) { this->gap_list.push_back(0); }
}

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

	ofSeedRandom(139);
}

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

	for (int x = 210; x < ofGetWidth(); x += 300) {

		for (int y = 210; y < ofGetHeight(); y += 300) {

			auto next_random_seed = ofRandom(1000);

			for (auto& gap : this->gap_list) {

				gap = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.003), 0, 1, 0.01, 0.3);
			}

			ofPushMatrix();
			ofTranslate(x, y);
			ofRotate(ofRandom(360));

			auto radius = 130;
			int deg_span = 360 / this->gon;
			vector<glm::vec2> vertices;
			auto first = true;
			while (true) {

				if (first) {

					for (auto deg = 0; deg < 360; deg += deg_span) {

						vertices.push_back(glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
					}

					first = false;
				}
				else {

					vector<glm::vec2> tmp;
					for (auto k = 0; k < vertices.size(); k++) {

						tmp.push_back(vertices[k] + (vertices[(k + 1) % vertices.size()] - vertices[k]) * this->gap_list[k]);
					}
					vertices = tmp;
				}

				ofSetColor(ofMap(glm::distance(vertices[0], vertices[1]), 100, 1, 0, 255));
				ofFill();
				ofBeginShape();
				ofVertices(vertices);
				ofEndShape(true);

				ofSetColor(ofMap(glm::distance(vertices[0], vertices[1]), 100, 1, 255, 0));
				ofNoFill();
				ofBeginShape();
				ofVertices(vertices);
				ofEndShape(true);

				if (glm::distance(vertices[0], vertices[1]) < 1) {

					break;
				}
			}

			ofPopMatrix();
			ofSeedRandom(next_random_seed);
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(1);

this->gon = 10;

for (auto i = 0; i < this->gon; i++) { this->gap_list.push_back(0); }

}

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

void ofApp::update() {

ofSeedRandom(139);

}

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

void ofApp::draw() {

for (int x = 210; x < ofGetWidth(); x += 300) {

for (int y = 210; y < ofGetHeight(); y += 300) {

auto next_random_seed = ofRandom(1000);

for (auto& gap : this->gap_list) {

gap = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.003), 0, 1, 0.01, 0.3);

}

ofPushMatrix();

ofTranslate(x, y);

ofRotate(ofRandom(360));

auto radius = 130;

int deg_span = 360 / this->gon;

vector<glm::vec2> vertices;

auto first = true;

while (true) {

if (first) {

for (auto deg = 0; deg < 360; deg += deg_span) {

vertices.push_back(glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

}

first = false;

}

else {

vector<glm::vec2> tmp;

for (auto k = 0; k < vertices.size(); k++) {

tmp.push_back(vertices[k] + (vertices[(k + 1) % vertices.size()] - vertices[k]) * this->gap_list[k]);

}

vertices = tmp;

}

ofSetColor(ofMap(glm::distance(vertices[0], vertices[1]), 100, 1, 0, 255));

ofFill();

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

ofSetColor(ofMap(glm::distance(vertices[0], vertices[1]), 100, 1, 255, 0));

ofNoFill();

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

if (glm::distance(vertices[0], vertices[1]) < 1) {

break;

}

ofPopMatrix();

ofSeedRandom(next_random_seed);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210911

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