ofMesh – ページ 166 – プログラミング de 落描き

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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2020年9月23日2020年9月23日

Changing Shapes. Draw by openFrameworks

[ Video ]

[ About ]
変形する図形。

Changing Shapes.

[ 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 setShapeToMesh(ofMesh& mesh_target, ofMesh& frame_target, glm::vec3 location, float len, int param_start, int param_end, ofColor face_color, ofColor frame_color);
	glm::vec2 make_point(int len, int param);

	vector<ofMesh> face_list, frame_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) {};

void setShapeToMesh(ofMesh& mesh_target, ofMesh& frame_target, glm::vec3 location, float len, int param_start, int param_end, ofColor face_color, ofColor frame_color);

glm::vec2 make_point(int len, int param);

vector<ofMesh> face_list, frame_list;

};

#include "ofApp.h"

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

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

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

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

	ofSeedRandom(39);

	this->face_list.clear();
	this->frame_list.clear();

	for (int x = -180; x <= 180; x += 360) {

		for (int y = -180; y <= 180; y += 360) {

			float noise_seed_1 = ofRandom(1000);
			float noise_seed_2 = ofRandom(1000);

			for (int i = 0; i < 150; i++) {

				int param_start = ofMap(ofNoise(noise_seed_1, ofGetFrameNum() * 0.003 + i * 0.001), 0, 1, 0, 200);
				int param_end = param_start + ofMap(ofNoise(noise_seed_2, ofGetFrameNum() * 0.003 + i * 0.001), 0, 1, 25, 50);

				ofMesh face, frame;
				frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
				this->setShapeToMesh(face, frame, glm::vec3(x, y, 0), 350, param_start, param_end, ofColor(ofMap(i, 0, 150, 200, 39)), ofColor(ofMap(i, 0, 150, 78, 239)));

				this->face_list.push_back(face);
				this->frame_list.push_back(frame);
			}
		}
	}

}

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

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

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

		this->face_list[i].drawFaces();
		this->frame_list[i].drawWireframe();
	}
}

//--------------------------------------------------------------
void ofApp::setShapeToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float len, int param_start, int param_end, ofColor face_color, ofColor frame_color) {

	vector<glm::vec3> vertices;
	vertices.push_back(location + this->make_point(len, param_start));
	for (int param = param_start; param < param_end; param++) {

		if (param % 25 == 0) { vertices.push_back(location + this->make_point(len, param)); }
	}
	vertices.push_back(location + this->make_point(len, param_end));

	face_target.addVertices(vertices);
	frame_target.addVertices(vertices);

	face_target.addIndex(0); face_target.addIndex(1); face_target.addIndex(2);
	for (int i = 2; i < face_target.getNumVertices() - 1; i++) {

		face_target.addIndex(0); face_target.addIndex(i); face_target.addIndex(i + 1);
	}

	for (int i = 0; i <frame_target.getNumVertices() - 1; i++) {

		frame_target.addIndex(i); frame_target.addIndex(i + 1);
	}

	frame_target.addIndex(0); frame_target.addIndex(face_target.getNumVertices() - 1);	


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

		face_target.addColor(face_color);
		frame_target.addColor(frame_color);
	}
}

//--------------------------------------------------------------
glm::vec2 ofApp::make_point(int len, int param) {

	param = param % 100;
	if (param < 25) {

		return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);
	}
	else if (param < 50) {

		return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));
	}
	else if (param < 75) {

		return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);
	}
	else {

		return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));
	}
}

//--------------------------------------------------------------
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(39);

ofSetLineWidth(2);

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face_list.clear();

this->frame_list.clear();

for (int x = -180; x <= 180; x += 360) {

for (int y = -180; y <= 180; y += 360) {

float noise_seed_1 = ofRandom(1000);

float noise_seed_2 = ofRandom(1000);

for (int i = 0; i < 150; i++) {

int param_start = ofMap(ofNoise(noise_seed_1, ofGetFrameNum() * 0.003 + i * 0.001), 0, 1, 0, 200);

int param_end = param_start + ofMap(ofNoise(noise_seed_2, ofGetFrameNum() * 0.003 + i * 0.001), 0, 1, 25, 50);

ofMesh face, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

this->setShapeToMesh(face, frame, glm::vec3(x, y, 0), 350, param_start, param_end, ofColor(ofMap(i, 0, 150, 200, 39)), ofColor(ofMap(i, 0, 150, 78, 239)));

this->face_list.push_back(face);

this->frame_list.push_back(frame);

}

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

void ofApp::draw() {

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

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

this->face_list[i].drawFaces();

this->frame_list[i].drawWireframe();

}

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

void ofApp::setShapeToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float len, int param_start, int param_end, ofColor face_color, ofColor frame_color) {

vector<glm::vec3> vertices;

vertices.push_back(location + this->make_point(len, param_start));

for (int param = param_start; param < param_end; param++) {

if (param % 25 == 0) { vertices.push_back(location + this->make_point(len, param)); }

}

vertices.push_back(location + this->make_point(len, param_end));

face_target.addVertices(vertices);

frame_target.addVertices(vertices);

face_target.addIndex(0); face_target.addIndex(1); face_target.addIndex(2);

for (int i = 2; i < face_target.getNumVertices() - 1; i++) {

face_target.addIndex(0); face_target.addIndex(i); face_target.addIndex(i + 1);

}

for (int i = 0; i <frame_target.getNumVertices() - 1; i++) {

frame_target.addIndex(i); frame_target.addIndex(i + 1);

}

frame_target.addIndex(0); frame_target.addIndex(face_target.getNumVertices() - 1);

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

face_target.addColor(face_color);

frame_target.addColor(frame_color);

}

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

glm::vec2 ofApp::make_point(int len, int param) {

param = param % 100;

if (param < 25) {

return glm::vec2(ofMap(param, 0, 25, -len * 0.5, len * 0.5), -len * 0.5);

}

else if (param < 50) {

return glm::vec2(len * 0.5, ofMap(param, 25, 50, -len * 0.5, len * 0.5));

}

else if (param < 75) {

return glm::vec2(ofMap(param, 50, 75, len * 0.5, -len * 0.5), len * 0.5);

}

else {

return glm::vec2(-len * 0.5, ofMap(param, 75, 100, len * 0.5, -len * 0.5));

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200923

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2020年9月21日2020年9月21日

Arcs. Draw by openFrameworks

[ Video ]

[ About ]
Arcs.

[ 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 setRingToMesh(ofMesh& frame_target, glm::vec3 location, float radius, int deg_start, int deg_end);

	ofEasyCam cam;
	ofMesh frame;

	vector<glm::vec3> start_location_list;
	vector<glm::vec3> end_location_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) {};

void setRingToMesh(ofMesh& frame_target, glm::vec3 location, float radius, int deg_start, int deg_end);

ofEasyCam cam;

ofMesh frame;

vector<glm::vec3> start_location_list;

vector<glm::vec3> end_location_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(2);

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

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

	ofSeedRandom(39);

	this->frame.clear();
	this->start_location_list.clear();
	this->end_location_list.clear();

	int deg_span = 30;
	for (int x = -230; x <= 230; x += 230) {

		for (int y = -230; y <= 230; y += 230) {

			for (int radius = 30; radius <= 90; radius += 15) {

				int deg_start = 0;
				int deg_end = 0;
				int tmp_deg = 0;
				auto noise_seed = ofRandom(1000);
				for (int deg = 0; deg < 360 + tmp_deg; deg += 1) {

					auto noise_value = ofNoise(glm::vec4(noise_seed, cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD), ofGetFrameNum() * 0.01));

					if (noise_value < 0.6) {

						deg_end = deg;

						if (deg == 0) {

							while (true) {

								tmp_deg -= 1;
								auto tmp_noise_value = ofNoise(glm::vec4(noise_seed, cos(tmp_deg * DEG_TO_RAD), sin(tmp_deg * DEG_TO_RAD), ofGetFrameNum() * 0.01));
								if (tmp_noise_value > 0.55 || tmp_deg < -360) { break; }
								deg_start = tmp_deg;
							}
						}
					}
					else {

						if (deg_start < deg_end) {

							this->setRingToMesh(this->frame, glm::vec3(x, y, 0), radius, deg_start, deg_end);
						}

						deg_start = deg;
						deg_end = deg;
					}
				}

				if (deg_start != deg_end) {

					this->setRingToMesh(this->frame, glm::vec3(x, y, 0), radius, deg_start, deg_end);
				}
			}
		}
	}
}

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

	this->cam.begin();

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

	for (auto& location : this->end_location_list) {

		ofFill();
		ofSetColor(239);
		ofDrawCircle(location, 3);

		ofNoFill();
		ofSetColor(39);
		ofDrawCircle(location, 3);
	}

	for (auto& location : this->start_location_list) {

		ofFill();
		ofSetColor(39);
		ofDrawCircle(location, 3);
	}

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::setRingToMesh(ofMesh& frame_target, glm::vec3 location, float radius, int deg_start, int deg_end) {

	if (deg_start == deg_end) { return; }

	int index = frame_target.getNumVertices();

	for (int deg = deg_start; deg <= deg_end; deg += 1) {

		vector<glm::vec3> vertices;
		vertices.push_back(location + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));
		vertices.push_back(location + glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), 0));
	
		auto frame_index = frame_target.getNumVertices();

		frame_target.addVertices(vertices);
		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);

		if (deg == deg_start) {

			this->start_location_list.push_back(vertices.front());
		}

		if (deg == deg_end) {

			this->end_location_list.push_back(vertices.back());
		}
	}
}

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

ofSetLineWidth(2);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->frame.clear();

this->start_location_list.clear();

this->end_location_list.clear();

int deg_span = 30;

for (int x = -230; x <= 230; x += 230) {

for (int y = -230; y <= 230; y += 230) {

for (int radius = 30; radius <= 90; radius += 15) {

int deg_start = 0;

int deg_end = 0;

int tmp_deg = 0;

auto noise_seed = ofRandom(1000);

for (int deg = 0; deg < 360 + tmp_deg; deg += 1) {

auto noise_value = ofNoise(glm::vec4(noise_seed, cos(deg * DEG_TO_RAD), sin(deg * DEG_TO_RAD), ofGetFrameNum() * 0.01));

if (noise_value < 0.6) {

deg_end = deg;

if (deg == 0) {

while (true) {

tmp_deg -= 1;

auto tmp_noise_value = ofNoise(glm::vec4(noise_seed, cos(tmp_deg * DEG_TO_RAD), sin(tmp_deg * DEG_TO_RAD), ofGetFrameNum() * 0.01));

if (tmp_noise_value > 0.55 || tmp_deg < -360) { break; }

deg_start = tmp_deg;

}

else {

if (deg_start < deg_end) {

this->setRingToMesh(this->frame, glm::vec3(x, y, 0), radius, deg_start, deg_end);

}

deg_start = deg;

deg_end = deg;

}

if (deg_start != deg_end) {

this->setRingToMesh(this->frame, glm::vec3(x, y, 0), radius, deg_start, deg_end);

}

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

void ofApp::draw() {

this->cam.begin();

ofSetColor(39);

this->frame.drawWireframe();

for (auto& location : this->end_location_list) {

ofFill();

ofSetColor(239);

ofDrawCircle(location, 3);

ofNoFill();

ofSetColor(39);

ofDrawCircle(location, 3);

}

for (auto& location : this->start_location_list) {

ofFill();

ofSetColor(39);

ofDrawCircle(location, 3);

}

this->cam.end();

}

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

void ofApp::setRingToMesh(ofMesh& frame_target, glm::vec3 location, float radius, int deg_start, int deg_end) {

if (deg_start == deg_end) { return; }

int index = frame_target.getNumVertices();

for (int deg = deg_start; deg <= deg_end; deg += 1) {

vector<glm::vec3> vertices;

vertices.push_back(location + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));

vertices.push_back(location + glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), 0));

auto frame_index = frame_target.getNumVertices();

frame_target.addVertices(vertices);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);

if (deg == deg_start) {

this->start_location_list.push_back(vertices.front());

}

if (deg == deg_end) {

this->end_location_list.push_back(vertices.back());

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200921

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