openFrameworks – ページ 550 – プログラミング de 落描き

2021年1月14日2021年1月14日

Random walk of Colors. Draw by openFrameworks

[ Video ]

[ About ]
色のランダムウォーク。

Random walk of Colors.

[ 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 mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

	int frame_span;
	int size;
	vector<glm::vec2> location_list;
	vector<ofColor> base_color_list;

	vector<int> current_index_list;
	vector<int> next_index_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 mouseEntered(int x, int y) {};

void mouseExited(int x, int y) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

int frame_span;

int size;

vector<glm::vec2> location_list;

vector<ofColor> base_color_list;

vector<int> current_index_list;

vector<int> next_index_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	this->frame_span = 30;
	this->size = 15;
	while (this->location_list.size() < 120) {

		auto location = glm::vec2(ofRandom(80, ofGetWidth() - 80), ofRandom(80, ofGetHeight() - 80));
		bool flag = true;
		for (int i = 0; i < this->location_list.size(); i++) {

			if (glm::distance(location, this->location_list[i]) < this->size * 3) {

				flag = false;
				break;
			}
		}

		if (flag) {

			this->location_list.push_back(location);
		}
	}

	ofColor color;
	vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };
	for (auto hex : hex_list) {

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

	for (int i = 0; i < 90; i++) {

		this->current_index_list.push_back(0);
		this->next_index_list.push_back(ofRandom(this->location_list.size()));
		this->color_list.push_back(this->base_color_list[ofRandom(this->base_color_list.size())]);
	}
}

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

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

		if (ofGetFrameNum() % (this->frame_span * 2) == 0) {

			int next_index = this->next_index_list[i];
			int current_index = next_index;

			vector<int> near_indexes;
			for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

				if (current_index == location_index) { continue; }
				if (glm::distance(this->location_list[current_index], this->location_list[location_index]) < this->size * 5) {

					near_indexes.push_back(location_index);
				}
			}

			if (near_indexes.size() > 0) {

				next_index = near_indexes[ofRandom(near_indexes.size())];
			}

			this->current_index_list[i] = current_index;
			this->next_index_list[i] = next_index;
		}
	}
}

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

	int frame_param = ofGetFrameNum() % this->frame_span;

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

		ofSetColor(this->color_list[i]);

		int current_index = this->current_index_list[i];
		int next_index = this->next_index_list[i];

		auto angle_current = std::atan2(this->location_list[next_index].y - this->location_list[current_index].y, this->location_list[next_index].x - this->location_list[current_index].x);
		auto satellite_point_current = this->location_list[current_index] + glm::vec2(this->size * cos(angle_current), this->size * sin(angle_current));
		auto angle_next = std::atan2(this->location_list[current_index].y - this->location_list[next_index].y, this->location_list[current_index].x - this->location_list[next_index].x);
		auto satellite_point_next = this->location_list[next_index] + glm::vec2(this->size * cos(angle_next), this->size * sin(angle_next));

		if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

			ofSetLineWidth(3);
			auto distance = glm::distance(satellite_point_next, satellite_point_current);
			distance = ofMap(frame_param, 0, this->frame_span, 0, distance);
			auto direction = satellite_point_next - satellite_point_current;
			ofDrawLine(satellite_point_current, satellite_point_current + glm::normalize(direction) * distance);

			ofSetLineWidth(1.5);
			for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

				ofNoFill();
				ofSetColor(255);
				ofDrawCircle(this->location_list[location_index], this->size);

				if (current_index == location_index) {

					int deg_param = ofMap(frame_param, 0, this->frame_span, 180, 0);
					float start_deg = angle_current * RAD_TO_DEG;

					ofFill();
					ofSetColor(this->color_list[i]);
					ofBeginShape();
					for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}
					for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}

					ofEndShape();
				}

				if (next_index == location_index) {

					int deg_param = ofMap(frame_param, 0, this->frame_span, 0, 90);
					float start_deg = angle_next * RAD_TO_DEG;

					ofFill();
					ofSetColor(this->color_list[i]);
					ofBeginShape();
					for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}
					for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}

					ofEndShape();
				}
			}
		}
		else {

			ofSetLineWidth(3);
			auto distance = glm::distance(satellite_point_next, satellite_point_current);
			distance = ofMap(frame_param, 0, this->frame_span, distance, 0);
			auto direction = satellite_point_next - satellite_point_current;
			ofDrawLine(satellite_point_next, satellite_point_next - glm::normalize(direction) * distance);

			ofSetLineWidth(1.5);
			for (int location_index = 0; location_index < this->location_list.size(); location_index++) {

				ofSetColor(255);
				ofNoFill();
				ofDrawCircle(this->location_list[location_index], this->size);

				if (next_index == location_index) {

					int deg_param = ofMap(frame_param, 0, this->frame_span, 90, 180);
					float start_deg = angle_next * RAD_TO_DEG;

					ofFill();
					ofSetColor(this->color_list[i]);
					ofBeginShape();
					for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}
					for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

						ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));
					}

					ofEndShape();
				}
			}
		}
	}
}

//--------------------------------------------------------------
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(0);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

this->frame_span = 30;

this->size = 15;

while (this->location_list.size() < 120) {

auto location = glm::vec2(ofRandom(80, ofGetWidth() - 80), ofRandom(80, ofGetHeight() - 80));

bool flag = true;

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

if (glm::distance(location, this->location_list[i]) < this->size * 3) {

flag = false;

break;

}

if (flag) {

this->location_list.push_back(location);

}

ofColor color;

vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };

for (auto hex : hex_list) {

color.setHex(hex);

this->base_color_list.push_back(color);

}

for (int i = 0; i < 90; i++) {

this->current_index_list.push_back(0);

this->next_index_list.push_back(ofRandom(this->location_list.size()));

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

}

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

void ofApp::update() {

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

if (ofGetFrameNum() % (this->frame_span * 2) == 0) {

int next_index = this->next_index_list[i];

int current_index = next_index;

vector<int> near_indexes;

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

if (current_index == location_index) { continue; }

if (glm::distance(this->location_list[current_index], this->location_list[location_index]) < this->size * 5) {

near_indexes.push_back(location_index);

}

if (near_indexes.size() > 0) {

next_index = near_indexes[ofRandom(near_indexes.size())];

}

this->current_index_list[i] = current_index;

this->next_index_list[i] = next_index;

}

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

void ofApp::draw() {

int frame_param = ofGetFrameNum() % this->frame_span;

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

ofSetColor(this->color_list[i]);

int current_index = this->current_index_list[i];

int next_index = this->next_index_list[i];

auto angle_current = std::atan2(this->location_list[next_index].y - this->location_list[current_index].y, this->location_list[next_index].x - this->location_list[current_index].x);

auto satellite_point_current = this->location_list[current_index] + glm::vec2(this->size * cos(angle_current), this->size * sin(angle_current));

auto angle_next = std::atan2(this->location_list[current_index].y - this->location_list[next_index].y, this->location_list[current_index].x - this->location_list[next_index].x);

auto satellite_point_next = this->location_list[next_index] + glm::vec2(this->size * cos(angle_next), this->size * sin(angle_next));

if (ofGetFrameNum() % (this->frame_span * 2) < this->frame_span) {

ofSetLineWidth(3);

auto distance = glm::distance(satellite_point_next, satellite_point_current);

distance = ofMap(frame_param, 0, this->frame_span, 0, distance);

auto direction = satellite_point_next - satellite_point_current;

ofDrawLine(satellite_point_current, satellite_point_current + glm::normalize(direction) * distance);

ofSetLineWidth(1.5);

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

ofNoFill();

ofSetColor(255);

ofDrawCircle(this->location_list[location_index], this->size);

if (current_index == location_index) {

int deg_param = ofMap(frame_param, 0, this->frame_span, 180, 0);

float start_deg = angle_current * RAD_TO_DEG;

ofFill();

ofSetColor(this->color_list[i]);

ofBeginShape();

for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

ofEndShape();

}

if (next_index == location_index) {

int deg_param = ofMap(frame_param, 0, this->frame_span, 0, 90);

float start_deg = angle_next * RAD_TO_DEG;

ofFill();

ofSetColor(this->color_list[i]);

ofBeginShape();

for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

ofEndShape();

}

else {

ofSetLineWidth(3);

auto distance = glm::distance(satellite_point_next, satellite_point_current);

distance = ofMap(frame_param, 0, this->frame_span, distance, 0);

auto direction = satellite_point_next - satellite_point_current;

ofDrawLine(satellite_point_next, satellite_point_next - glm::normalize(direction) * distance);

ofSetLineWidth(1.5);

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

ofSetColor(255);

ofNoFill();

ofDrawCircle(this->location_list[location_index], this->size);

if (next_index == location_index) {

int deg_param = ofMap(frame_param, 0, this->frame_span, 90, 180);

float start_deg = angle_next * RAD_TO_DEG;

ofFill();

ofSetColor(this->color_list[i]);

ofBeginShape();

for (int deg = start_deg; deg <= start_deg + deg_param; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

for (int deg = start_deg - deg_param; deg <= start_deg; deg++) {

ofVertex(this->location_list[location_index] + glm::vec2(this->size * cos(deg * DEG_TO_RAD), this->size * sin(deg * DEG_TO_RAD)));

}

ofEndShape();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210114

2021年1月13日

Color circles. Draw by openFrameworks

[ Video ]

[ About ]
Color ciecles.

[ 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) {};

	vector<ofColor> base_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) {};

vector<ofColor> base_color_list;

};

#include "ofApp.h"	

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

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

	ofBackground(0);
	ofSetLineWidth(2);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	ofColor color;
	vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };
	for (auto hex : hex_list) {

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

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

	ofSeedRandom(39);
}

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

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

	for (int x = -215; x <= 215; x += 215) {

		for (int y = -215; y <= 215; y += 215) {

			for (int radius = 30; radius < 100; radius += 5) {

				ofMesh face, line;
				line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

				int color_index = ofRandom(this->base_color_list.size());

				int start_deg = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 0, 360);
				int deg_len = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -90, 270);

				face.addVertex(glm::vec3(x, y, 0));
				face.addColor(ofColor(this->base_color_list[color_index], 64));
				for (int deg = start_deg; deg < start_deg + deg_len; deg++) {

					face.addVertex(glm::vec3(x, y, 0) + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));
					face.addColor(ofColor(this->base_color_list[color_index], 64));

					line.addVertex(glm::vec3(x, y, 0) + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));
					line.addColor(this->base_color_list[color_index]);

					if (deg != start_deg) {

						face.addIndex(0);
						face.addIndex(face.getNumVertices() - 1);
						face.addIndex(face.getNumVertices() - 2);

						line.addIndex(line.getNumVertices() - 1);
						line.addIndex(line.getNumVertices() - 2);
					}
				}

				face.draw();
				line.draw();
			}
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(2);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofColor color;

vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };

for (auto hex : hex_list) {

color.setHex(hex);

this->base_color_list.push_back(color);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

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

for (int x = -215; x <= 215; x += 215) {

for (int y = -215; y <= 215; y += 215) {

for (int radius = 30; radius < 100; radius += 5) {

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

int color_index = ofRandom(this->base_color_list.size());

int start_deg = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 0, 360);

int deg_len = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -90, 270);

face.addVertex(glm::vec3(x, y, 0));

face.addColor(ofColor(this->base_color_list[color_index], 64));

for (int deg = start_deg; deg < start_deg + deg_len; deg++) {

face.addVertex(glm::vec3(x, y, 0) + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));

face.addColor(ofColor(this->base_color_list[color_index], 64));

line.addVertex(glm::vec3(x, y, 0) + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));

line.addColor(this->base_color_list[color_index]);

if (deg != start_deg) {

face.addIndex(0);

face.addIndex(face.getNumVertices() - 1);

face.addIndex(face.getNumVertices() - 2);

line.addIndex(line.getNumVertices() - 1);

line.addIndex(line.getNumVertices() - 2);

}

face.draw();

line.draw();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210113/

2021年1月12日2021年1月12日

Double. Draw by openFrameworks

[ Video ]

[ About ]
Double.

[ 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) {};

	vector<ofMesh> line_list;
	ofMesh near_line;
};

#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) {};

vector<ofMesh> line_list;

ofMesh near_line;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2);

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

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

	ofSeedRandom(39);
	this->line_list.clear();
	this->near_line.clear();

	for (int x = 220; x < ofGetWidth(); x += 280) {

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

			auto noise_seed_deg = ofRandom(1000);
			auto noise_seed_radius = ofRandom(1000);
			vector<glm::vec3> vertices;
			for (int i = 0; i < 50; i++) {

				auto noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i) * 0.003), 0, 1, -360, 360);
				auto noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i) * 0.004), 0, 1, -250, 250);
				vertices.push_back(glm::vec3(noise_radius * cos(noise_deg * DEG_TO_RAD), noise_radius * sin(noise_deg * DEG_TO_RAD), 0));
			}

			for (int deg = 0; deg < 360; deg += 60) {

				auto rotation = glm::rotate(glm::mat4(), deg * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));
				ofMesh line;
				line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

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

					line.addVertex(glm::vec4(vertices[i], 0) * rotation + glm::vec4(x, ofGetHeight() * 0.5, 0, 0));
					if (i > 0) {

						line.addIndex(i); line.addIndex(i - 1);
					}
				}

				this->line_list.push_back(line);
			}
		}
	}

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

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

			for (int m = 0; m < this->line_list[i].getNumVertices(); m++) {

				bool m_flag = false;
				int m_index = m;
				for (int p = 0; p < this->line_list[k].getNumVertices(); p++) {

					if (glm::distance(this->line_list[i].getVertex(m), this->line_list[k].getVertex(p)) < 15) {

						if (m_flag == false) {

							m_index = this->near_line.getNumVertices();
							this->near_line.addVertex(this->line_list[i].getVertex(m));
							m_flag = true;
						}

						this->near_line.addVertex(this->line_list[k].getVertex(p));

						this->near_line.addIndex(m_index);
						this->near_line.addIndex(this->near_line.getNumVertices() - 1);
					}
				}
			}
		}
	}
}

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

	for (auto& line : this->line_list) {

		line.draw();
	}

	this->near_line.draw();
}

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

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

100

101

102

103

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(2);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->line_list.clear();

this->near_line.clear();

for (int x = 220; x < ofGetWidth(); x += 280) {

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

auto noise_seed_deg = ofRandom(1000);

auto noise_seed_radius = ofRandom(1000);

vector<glm::vec3> vertices;

for (int i = 0; i < 50; i++) {

auto noise_deg = ofMap(ofNoise(noise_seed_deg, (ofGetFrameNum() + i) * 0.003), 0, 1, -360, 360);

auto noise_radius = ofMap(ofNoise(noise_seed_radius, (ofGetFrameNum() + i) * 0.004), 0, 1, -250, 250);

vertices.push_back(glm::vec3(noise_radius * cos(noise_deg * DEG_TO_RAD), noise_radius * sin(noise_deg * DEG_TO_RAD), 0));

}

for (int deg = 0; deg < 360; deg += 60) {

auto rotation = glm::rotate(glm::mat4(), deg * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));

ofMesh line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

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

line.addVertex(glm::vec4(vertices[i], 0) * rotation + glm::vec4(x, ofGetHeight() * 0.5, 0, 0));

if (i > 0) {

line.addIndex(i); line.addIndex(i - 1);

}

this->line_list.push_back(line);

}

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

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

for (int m = 0; m < this->line_list[i].getNumVertices(); m++) {

bool m_flag = false;

int m_index = m;

for (int p = 0; p < this->line_list[k].getNumVertices(); p++) {

if (glm::distance(this->line_list[i].getVertex(m), this->line_list[k].getVertex(p)) < 15) {

if (m_flag == false) {

m_index = this->near_line.getNumVertices();

this->near_line.addVertex(this->line_list[i].getVertex(m));

m_flag = true;

}

this->near_line.addVertex(this->line_list[k].getVertex(p));

this->near_line.addIndex(m_index);

this->near_line.addIndex(this->near_line.getNumVertices() - 1);

}

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

void ofApp::draw() {

for (auto& line : this->line_list) {

line.draw();

}

this->near_line.draw();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210112

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