sphere – ページ 24 – プログラミング de 落描き

2021年10月5日2021年10月5日

Spheres ring. Draw by openFrameworks

[ Video ]

[ About ]
下記の式で輪の動きを反転させる。

The following equation reverses the motion of the wheel.

int theta_start = radius == 150 ? (int)(ofGetFrameNum() * 0.5) % 10 * -1:  (int)(ofGetFrameNum() * 0.5) % 10;

1	int theta_start = radius == 150 ? (int)(ofGetFrameNum() * 0.5) % 10 * -1: (int)(ofGetFrameNum() * 0.5) % 10;

[ 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;
	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;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(2);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

	this->face.clear();
	this->frame.clear();

	for (int radius = 150; radius <= 300; radius += 150) {

		int theta_start = radius == 150 ? (int)(ofGetFrameNum() * 0.5) % 10 * -1:  (int)(ofGetFrameNum() * 0.5) % 10;
		for (int theta = theta_start; theta < theta_start + 180; theta += 10) {

			for (int phi = 0; phi < 360; phi += 3) {

				auto index = this->face.getNumVertices();
				vector<glm::vec3> vertices;

				vertices.push_back(glm::vec3(
					radius * cos(phi * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),
					radius * sin(phi * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),
					radius * cos((theta + 1) * DEG_TO_RAD)
				));
				vertices.push_back(glm::vec3(
					radius * cos((phi + 3) * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),
					radius * sin((phi + 3) * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),
					radius * cos((theta + 1) * DEG_TO_RAD)
				));
				vertices.push_back(glm::vec3(
					radius * cos((phi + 3) * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),
					radius * sin((phi + 3) * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),
					radius * cos((theta - 1) * DEG_TO_RAD)
				));
				vertices.push_back(glm::vec3(
					radius * cos(phi * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),
					radius * sin(phi * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),
					radius * cos((theta - 1) * DEG_TO_RAD)
				));

				vertices.push_back(glm::vec3(
					(radius - 30) * cos(phi * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),
					(radius - 30) * sin(phi * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),
					radius * cos((theta + 1) * DEG_TO_RAD)
				));
				vertices.push_back(glm::vec3(
					(radius - 30) * cos((phi + 3) * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),
					(radius - 30) * sin((phi + 3) * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),
					radius * cos((theta + 1) * DEG_TO_RAD)
				));
				vertices.push_back(glm::vec3(
					(radius - 30) * cos((phi + 3) * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),
					(radius - 30) * sin((phi + 3) * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),
					radius * cos((theta - 1) * DEG_TO_RAD)
				));
				vertices.push_back(glm::vec3(
					(radius - 30) * cos(phi * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),
					(radius - 30) * sin(phi * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),
					radius * cos((theta - 1) * DEG_TO_RAD)
				));

				this->face.addVertices(vertices);
				this->frame.addVertices(vertices);

				this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 2);
				this->face.addIndex(index + 0); this->face.addIndex(index + 2); this->face.addIndex(index + 3);

				this->face.addIndex(index + 4); this->face.addIndex(index + 5); this->face.addIndex(index + 6);
				this->face.addIndex(index + 4); this->face.addIndex(index + 6); this->face.addIndex(index + 7);

				this->face.addIndex(index + 0); this->face.addIndex(index + 4); this->face.addIndex(index + 5);
				this->face.addIndex(index + 0); this->face.addIndex(index + 5); this->face.addIndex(index + 1);

				this->face.addIndex(index + 2); this->face.addIndex(index + 6); this->face.addIndex(index + 7);
				this->face.addIndex(index + 2); this->face.addIndex(index + 7); this->face.addIndex(index + 3);

				this->frame.addIndex(index + 0); this->frame.addIndex(index + 1);
				this->frame.addIndex(index + 2); this->frame.addIndex(index + 3);

				this->frame.addIndex(index + 4); this->frame.addIndex(index + 5);
				this->frame.addIndex(index + 6); this->frame.addIndex(index + 7);

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

					this->face.addColor(radius == 150 ? ofColor(239) : ofColor(39));
					this->frame.addColor(radius == 150 ? ofColor(39) : ofColor(239));
				}

			}
		}
	}
}


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

	this->cam.begin();
	ofRotateX(270);

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

ofSetLineWidth(2);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

for (int radius = 150; radius <= 300; radius += 150) {

int theta_start = radius == 150 ? (int)(ofGetFrameNum() * 0.5) % 10 * -1: (int)(ofGetFrameNum() * 0.5) % 10;

for (int theta = theta_start; theta < theta_start + 180; theta += 10) {

for (int phi = 0; phi < 360; phi += 3) {

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(

radius * cos(phi * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),

radius * sin(phi * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),

radius * cos((theta + 1) * DEG_TO_RAD)

));

vertices.push_back(glm::vec3(

radius * cos((phi + 3) * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),

radius * sin((phi + 3) * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),

radius * cos((theta + 1) * DEG_TO_RAD)

));

vertices.push_back(glm::vec3(

radius * cos((phi + 3) * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),

radius * sin((phi + 3) * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),

radius * cos((theta - 1) * DEG_TO_RAD)

));

vertices.push_back(glm::vec3(

radius * cos(phi * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),

radius * sin(phi * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),

radius * cos((theta - 1) * DEG_TO_RAD)

));

vertices.push_back(glm::vec3(

(radius - 30) * cos(phi * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),

(radius - 30) * sin(phi * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),

radius * cos((theta + 1) * DEG_TO_RAD)

));

vertices.push_back(glm::vec3(

(radius - 30) * cos((phi + 3) * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),

(radius - 30) * sin((phi + 3) * DEG_TO_RAD) * sin((theta + 1) * DEG_TO_RAD),

radius * cos((theta + 1) * DEG_TO_RAD)

));

vertices.push_back(glm::vec3(

(radius - 30) * cos((phi + 3) * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),

(radius - 30) * sin((phi + 3) * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),

radius * cos((theta - 1) * DEG_TO_RAD)

));

vertices.push_back(glm::vec3(

(radius - 30) * cos(phi * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),

(radius - 30) * sin(phi * DEG_TO_RAD) * sin((theta - 1) * DEG_TO_RAD),

radius * cos((theta - 1) * DEG_TO_RAD)

));

this->face.addVertices(vertices);

this->frame.addVertices(vertices);

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

this->face.addIndex(index + 0); this->face.addIndex(index + 2); this->face.addIndex(index + 3);

this->face.addIndex(index + 4); this->face.addIndex(index + 5); this->face.addIndex(index + 6);

this->face.addIndex(index + 4); this->face.addIndex(index + 6); this->face.addIndex(index + 7);

this->face.addIndex(index + 0); this->face.addIndex(index + 4); this->face.addIndex(index + 5);

this->face.addIndex(index + 0); this->face.addIndex(index + 5); this->face.addIndex(index + 1);

this->face.addIndex(index + 2); this->face.addIndex(index + 6); this->face.addIndex(index + 7);

this->face.addIndex(index + 2); this->face.addIndex(index + 7); this->face.addIndex(index + 3);

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

this->frame.addIndex(index + 2); this->frame.addIndex(index + 3);

this->frame.addIndex(index + 4); this->frame.addIndex(index + 5);

this->frame.addIndex(index + 6); this->frame.addIndex(index + 7);

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

this->face.addColor(radius == 150 ? ofColor(239) : ofColor(39));

this->frame.addColor(radius == 150 ? ofColor(39) : ofColor(239));

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(270);

this->face.draw();

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211005

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Amazon

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2021年9月25日

Pattern of spinning spheres. Draw by openFrameworks

[ Video ]

[ About ]
球体の頂点を回転させた軌跡。

The locus of rotation of the vertices of a sphere.

[ 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) {};

	ofEasyCam cam;
	vector<ofMeshFace> triangle_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) {};

ofEasyCam cam;

vector<ofMeshFace> triangle_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetColor(255);
	ofSetLineWidth(1.5);
	ofNoFill();
	ofEnableDepthTest();

	auto ico_sphere = ofIcoSpherePrimitive(250, 1);
	this->triangle_list = ico_sphere.getMesh().getUniqueFaces();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	int log = 20;
	int span = 600;

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

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

			ofPushMatrix();
			ofTranslate(x, y, 0);

			float noise_seed_x = ofRandom(1000);
			float noise_seed_y = ofRandom(1000);
			float noise_seed_z = ofRandom(1000);
			for (auto& triangle : this->triangle_list) {

				glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

				ofBeginShape();
				for (int i = 0; i < log; i++) {

					auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_x, (ofGetFrameNum() + i) * 0.003), 0, 1, -PI, PI), glm::vec3(1, 0, 0));
					auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_y, (ofGetFrameNum() + i) * 0.003), 0, 1, -PI, PI), glm::vec3(0, 1, 0));
					auto rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_z, (ofGetFrameNum() + i) * 0.003), 0, 1, -PI, PI), glm::vec3(0, 0, 1));

					glm::vec3 location = glm::vec4(avg, 0) * rotation_z * rotation_y * rotation_x;
					ofVertex(location);

					if (i == log - 1) {

						ofFill();
						ofDrawSphere(location, 5);
						ofNoFill();
					}
				}
				ofEndShape(false);
			}

			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(0);

ofSetColor(255);

ofSetLineWidth(1.5);

ofNoFill();

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(250, 1);

this->triangle_list = ico_sphere.getMesh().getUniqueFaces();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

int log = 20;

int span = 600;

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

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

ofPushMatrix();

ofTranslate(x, y, 0);

float noise_seed_x = ofRandom(1000);

float noise_seed_y = ofRandom(1000);

float noise_seed_z = ofRandom(1000);

for (auto& triangle : this->triangle_list) {

glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

ofBeginShape();

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

auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_x, (ofGetFrameNum() + i) * 0.003), 0, 1, -PI, PI), glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_y, (ofGetFrameNum() + i) * 0.003), 0, 1, -PI, PI), glm::vec3(0, 1, 0));

auto rotation_z = glm::rotate(glm::mat4(), ofMap(ofNoise(noise_seed_z, (ofGetFrameNum() + i) * 0.003), 0, 1, -PI, PI), glm::vec3(0, 0, 1));

glm::vec3 location = glm::vec4(avg, 0) * rotation_z * rotation_y * rotation_x;

ofVertex(location);

if (i == log - 1) {

ofFill();

ofDrawSphere(location, 5);

ofNoFill();

}

ofEndShape(false);

}

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210925

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Amazon

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2021年9月5日

Twin color ribbon and sphere. Draw by openFrameworks

[ Video ]

[ About ]
真ん中の球体はリボンとの距離を比較して色を変える。

The sphere in the middle changes color based on its distance from the ribbon.

if (glm::distance(avg, this->red_location) > glm::distance(avg, this->blue_location)) {

	this->sphere_face.addColor(ofColor(0, 203, 255));
	this->sphere_face.addColor(ofColor(0, 203, 255));
	this->sphere_face.addColor(ofColor(0, 203, 255));
}
else{
	this->sphere_face.addColor(ofColor(255, 0, 153));
	this->sphere_face.addColor(ofColor(255, 0, 153));
	this->sphere_face.addColor(ofColor(255, 0, 153));
}

if (glm::distance(avg, this->red_location) > glm::distance(avg, this->blue_location)) {

this->sphere_face.addColor(ofColor(0, 203, 255));

}

else{

this->sphere_face.addColor(ofColor(255, 0, 153));

}

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp { 
<pre class="lang:default decode:true " title="ofApp.cpp" >#include "ofApp.h"

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

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

	ofBackground(239);
	ofNoFill();
	ofSetColor(39);
	ofEnableDepthTest();
	ofSetCircleResolution(60);
	ofSetLineWidth(2);

		auto ico_sphere = ofIcoSpherePrimitive(80, 5);
	this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());

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

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

	ofSeedRandom(39);

	this->face.clear();
	this->line.clear();
	this->sphere_face.clear();
	this->sphere_line.clear();

	float x_span = 1;
	auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

	for (int x_param = -1; x_param <= 1; x_param += 2) {

		int start_index = this->face.getNumVertices();
		for (float x = 100; x < 250; x += x_span) {

			float next_x = x + x_span;
			int index = this->face.getNumVertices();

			float angle_x = ofMap(ofNoise(noise_seed.x, x * 0.0035 + ofGetFrameNum() * 0.0085), 0, 1, PI * -2, PI * 2);
			auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

			float angle_y = ofMap(ofNoise(noise_seed.y, x * 0.0035 + ofGetFrameNum() * 0.0085), 0, 1, PI * -2, PI * 2);
			auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

			float next_angle_x = ofMap(ofNoise(noise_seed.x, next_x * 0.0035 + ofGetFrameNum() * 0.0085), 0, 1, PI * -2, PI * 2);
			auto next_rotation_x = glm::rotate(glm::mat4(), next_angle_x, glm::vec3(1, 0, 0));

			float next_angle_y = ofMap(ofNoise(noise_seed.y, next_x * 0.0035 + ofGetFrameNum() * 0.0085), 0, 1, PI * -2, PI * 2);
			auto next_rotation_y = glm::rotate(glm::mat4(), next_angle_y, glm::vec3(0, 1, 0));

			vector<glm::vec3> vertices;
			vertices.push_back(glm::vec4(x * x_param, 20, 0, 0) * rotation_y * rotation_x);
			vertices.push_back(glm::vec4(next_x * x_param, 20, 0, 0)* next_rotation_y* next_rotation_x);
			vertices.push_back(glm::vec4(next_x * x_param, -20, 0, 0) * next_rotation_y * next_rotation_x);
			vertices.push_back(glm::vec4(x * x_param, -20, 0, 0) * rotation_y * rotation_x);


			this->face.addVertices(vertices);
			this->line.addVertices(vertices);

			this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 2);
			this->face.addIndex(index + 0); this->face.addIndex(index + 2); this->face.addIndex(index + 3);

			this->line.addIndex(index + 0); this->line.addIndex(index + 1);
			this->line.addIndex(index + 2); this->line.addIndex(index + 3);

			if (x_param == -1) {
				
				this->face.addColor(ofColor(255, 0, 153));
				this->face.addColor(ofColor(255, 0, 153));
				this->face.addColor(ofColor(255, 0, 153));
				this->face.addColor(ofColor(255, 0, 153));
			}else{

				this->face.addColor(ofColor(0, 203, 255));
				this->face.addColor(ofColor(0, 203, 255));
				this->face.addColor(ofColor(0, 203, 255));
				this->face.addColor(ofColor(0, 203, 255));
			}

			if (x == 100 && x_param == -1) {

				this->red_location = (vertices[0] + vertices[3]) / 2;
			}

			if (x == 100 && x_param == 1) {

				this->blue_location = (vertices[0] + vertices[3]) / 2;
			}

		}

		this->line.addIndex(start_index + 0); this->line.addIndex(start_index + 3);
		this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
	}

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

		vector<glm::vec3> vertices;

		glm::vec3 avg = (this->triangle_list[i].getVertex(0) + this->triangle_list[i].getVertex(1) + this->triangle_list[i].getVertex(2)) / 3;
		vertices.push_back(this->triangle_list[i].getVertex(0));
		vertices.push_back(this->triangle_list[i].getVertex(1));
		vertices.push_back(this->triangle_list[i].getVertex(2));

		this->sphere_face.addVertices(vertices);
		this->sphere_line.addVertices(vertices);

		if (glm::distance(avg, this->red_location) > glm::distance(avg, this->blue_location)) {

			this->sphere_face.addColor(ofColor(0, 203, 255));
			this->sphere_face.addColor(ofColor(0, 203, 255));
			this->sphere_face.addColor(ofColor(0, 203, 255));
		}
		else{

			this->sphere_face.addColor(ofColor(255, 0, 153));
			this->sphere_face.addColor(ofColor(255, 0, 153));
			this->sphere_face.addColor(ofColor(255, 0, 153));
		}

		this->sphere_line.addColor(ofColor(239));
		this->sphere_line.addColor(ofColor(239));
		this->sphere_line.addColor(ofColor(239));

		this->sphere_face.addTriangle(this->sphere_face.getNumVertices() - 1, this->sphere_face.getNumVertices() - 2, this->sphere_face.getNumVertices() - 3);

		this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 1); this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 2);
		this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 2); this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 3);
		this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 1); this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 3);
	}
}

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

	this->cam.begin();

	ofDrawCircle(glm::vec3(), 81);

	ofRotateX(ofGetFrameNum() * 0.37);
	ofRotateY(ofGetFrameNum() * 0.72);

	this->face.draw();
	this->line.drawWireframe();

	this->sphere_face.draw();
	//this->sphere_line.drawWireframe();


	this->cam.end();
}

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

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

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#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

<pre class="lang:default decode:true " title="ofApp.cpp" >#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofNoFill();

ofSetColor(39);

ofEnableDepthTest();

ofSetCircleResolution(60);

ofSetLineWidth(2);

auto ico_sphere = ofIcoSpherePrimitive(80, 5);

this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());

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

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

this->sphere_face.clear();

this->sphere_line.clear();

float x_span = 1;

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

for (int x_param = -1; x_param <= 1; x_param += 2) {

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

for (float x = 100; x < 250; x += x_span) {

float next_x = x + x_span;

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

float angle_x = ofMap(ofNoise(noise_seed.x, x * 0.0035 + ofGetFrameNum() * 0.0085), 0, 1, PI * -2, PI * 2);

auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

float angle_y = ofMap(ofNoise(noise_seed.y, x * 0.0035 + ofGetFrameNum() * 0.0085), 0, 1, PI * -2, PI * 2);

auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

float next_angle_x = ofMap(ofNoise(noise_seed.x, next_x * 0.0035 + ofGetFrameNum() * 0.0085), 0, 1, PI * -2, PI * 2);

auto next_rotation_x = glm::rotate(glm::mat4(), next_angle_x, glm::vec3(1, 0, 0));

float next_angle_y = ofMap(ofNoise(noise_seed.y, next_x * 0.0035 + ofGetFrameNum() * 0.0085), 0, 1, PI * -2, PI * 2);

auto next_rotation_y = glm::rotate(glm::mat4(), next_angle_y, glm::vec3(0, 1, 0));

vector<glm::vec3> vertices;

vertices.push_back(glm::vec4(x * x_param, 20, 0, 0) * rotation_y * rotation_x);

vertices.push_back(glm::vec4(next_x * x_param, 20, 0, 0)* next_rotation_y* next_rotation_x);

vertices.push_back(glm::vec4(next_x * x_param, -20, 0, 0) * next_rotation_y * next_rotation_x);

vertices.push_back(glm::vec4(x * x_param, -20, 0, 0) * rotation_y * rotation_x);

this->face.addVertices(vertices);

this->line.addVertices(vertices);

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

this->face.addIndex(index + 0); this->face.addIndex(index + 2); this->face.addIndex(index + 3);

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

this->line.addIndex(index + 2); this->line.addIndex(index + 3);

if (x_param == -1) {

this->face.addColor(ofColor(255, 0, 153));

}else{

this->face.addColor(ofColor(0, 203, 255));

}

if (x == 100 && x_param == -1) {

this->red_location = (vertices[0] + vertices[3]) / 2;

}

if (x == 100 && x_param == 1) {

this->blue_location = (vertices[0] + vertices[3]) / 2;

}

this->line.addIndex(start_index + 0); this->line.addIndex(start_index + 3);

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

}

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

vector<glm::vec3> vertices;

glm::vec3 avg = (this->triangle_list[i].getVertex(0) + this->triangle_list[i].getVertex(1) + this->triangle_list[i].getVertex(2)) / 3;

vertices.push_back(this->triangle_list[i].getVertex(0));

vertices.push_back(this->triangle_list[i].getVertex(1));

vertices.push_back(this->triangle_list[i].getVertex(2));

this->sphere_face.addVertices(vertices);

this->sphere_line.addVertices(vertices);

if (glm::distance(avg, this->red_location) > glm::distance(avg, this->blue_location)) {

this->sphere_face.addColor(ofColor(0, 203, 255));

}

else{

this->sphere_face.addColor(ofColor(255, 0, 153));

}

this->sphere_line.addColor(ofColor(239));

this->sphere_face.addTriangle(this->sphere_face.getNumVertices() - 1, this->sphere_face.getNumVertices() - 2, this->sphere_face.getNumVertices() - 3);

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

this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 2); this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 3);

this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 1); this->sphere_line.addIndex(this->sphere_line.getNumVertices() - 3);

}

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

void ofApp::draw() {

this->cam.begin();

ofDrawCircle(glm::vec3(), 81);

ofRotateX(ofGetFrameNum() * 0.37);

ofRotateY(ofGetFrameNum() * 0.72);

this->face.draw();

this->line.drawWireframe();

this->sphere_face.draw();

//this->sphere_line.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

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;
ofMesh face, line, sphere_face, sphere_line;
vector<ofMeshFace> triangle_list;

glm::vec3 blue_location;
glm::vec3 red_location;
};

[ Link ]
https://github.com/junkiyoshi/Insta20210905

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