sphere – ページ 35 – プログラミング de 落描き

2020年12月19日2020年12月19日

noise(x, y, z + frame_count). Draw by openFrameworks

[ Video ]

[ About ]
noise(x, y, z + frame_count)

[ 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);
	ofEnableDepthTest();

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

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

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

	float phi_deg_step = 10;
	float theta_deg_step = 6;

	for (int x = -600; x <= 600; x += 600) {

		for (int z = -600; z <= 600; z += 600) {

			for (float radius = 150; radius <= 250; radius += 100) {

				for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

					for (float theta_deg = 0; theta_deg <= 180; theta_deg += theta_deg_step) {

						auto noise_value = ofNoise(glm::vec3(
							x + radius * sin(theta_deg * DEG_TO_RAD) * cos(phi_deg * DEG_TO_RAD) * 0.003,
							radius * sin(theta_deg * DEG_TO_RAD) * sin(phi_deg * DEG_TO_RAD) * 0.003,
							z + radius * cos(theta_deg * DEG_TO_RAD) * 0.003 +
							ofGetFrameNum() * 0.03));

						if (noise_value > 0.55) {

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

							vertices.push_back(glm::vec3(
								x + radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
								radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
								z + radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));
							vertices.push_back(glm::vec3(
								x + radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
								radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
								z + radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));
							vertices.push_back(glm::vec3(
								x + radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
								radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
								z + radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));
							vertices.push_back(glm::vec3(
								x + radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
								radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
								z + radius * cos((theta_deg + theta_deg_step * 0.5) * 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 + 3);
							this->face.addIndex(index + 0); this->face.addIndex(index + 3); this->face.addIndex(index + 2);

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

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

	this->cam.begin();
	ofRotateX(90);

	ofSetColor(239, 71, 111);
	this->face.draw();

	ofSetColor(239);
	this->frame.draw();

	this->cam.end();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

this->face.clear();

this->frame.clear();

float phi_deg_step = 10;

float theta_deg_step = 6;

for (int x = -600; x <= 600; x += 600) {

for (int z = -600; z <= 600; z += 600) {

for (float radius = 150; radius <= 250; radius += 100) {

for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

for (float theta_deg = 0; theta_deg <= 180; theta_deg += theta_deg_step) {

auto noise_value = ofNoise(glm::vec3(

x + radius * sin(theta_deg * DEG_TO_RAD) * cos(phi_deg * DEG_TO_RAD) * 0.003,

radius * sin(theta_deg * DEG_TO_RAD) * sin(phi_deg * DEG_TO_RAD) * 0.003,

z + radius * cos(theta_deg * DEG_TO_RAD) * 0.003 +

ofGetFrameNum() * 0.03));

if (noise_value > 0.55) {

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(

x + radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

z + radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));

vertices.push_back(glm::vec3(

x + radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

z + radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));

vertices.push_back(glm::vec3(

x + radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

z + radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));

vertices.push_back(glm::vec3(

x + radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

z + radius * cos((theta_deg + theta_deg_step * 0.5) * 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 + 3);

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

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

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

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(90);

ofSetColor(239, 71, 111);

this->face.draw();

ofSetColor(239);

this->frame.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20201219

2020年12月10日2020年12月10日

Crush only half of the sphere. Draw by openFrameworks

[ Video ]

[ About ]
球体潰し。

Crush only half of the 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 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);
	ofSetColor(39);
	ofEnableDepthTest();
	ofSetLineWidth(1.5);

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

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

	ofSeedRandom(39);

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

	int radius = 250;
	float phi_deg_step = 10;
	float theta_deg_step = 3;

	for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

		for (float theta_deg = 0; theta_deg < 180; theta_deg += theta_deg_step) {

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

			vertices.push_back(glm::vec3(
				radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));
			vertices.push_back(glm::vec3(
				radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));
			vertices.push_back(glm::vec3(
				radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));
			vertices.push_back(glm::vec3(
				radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),
				radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));

			for (auto& vertex : vertices) {

				if (vertex.z > 0) {

					auto noise_value = ofNoise(vertex.x * 0.005, vertex.y * 0.005, ofGetFrameNum() * 0.01);
					vertex.z = ofMap(noise_value, 0, 1, 0, 100);
				}
			}

			this->face.addVertices(vertices);

			for (auto& vertex : vertices) {

				if (vertex.z > 0) {

					vertex.z += 0.1;
				}
			}

			this->frame.addVertices(vertices);

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

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

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

	this->cam.begin();

	for (int x = -650; x <= 650; x += 650) {

		for (int y = -650; y <= 650; y += 650) {

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

			ofRotateY(ofRandom(360) + ofGetFrameNum() * 0.31);
			ofRotateX(ofRandom(360) + ofGetFrameNum() * 0.89);

			ofSetColor(239);
			this->face.draw();

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

			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);

ofSetColor(39);

ofEnableDepthTest();

ofSetLineWidth(1.5);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

int radius = 250;

float phi_deg_step = 10;

float theta_deg_step = 3;

for (float phi_deg = 0; phi_deg < 360; phi_deg += phi_deg_step) {

for (float theta_deg = 0; theta_deg < 180; theta_deg += theta_deg_step) {

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));

vertices.push_back(glm::vec3(

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * cos((theta_deg - theta_deg_step * 0.5) * DEG_TO_RAD)));

vertices.push_back(glm::vec3(

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg + phi_deg_step * 0.5) * DEG_TO_RAD),

radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));

vertices.push_back(glm::vec3(

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * cos((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * sin((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD) * sin((phi_deg - phi_deg_step * 0.5) * DEG_TO_RAD),

radius * cos((theta_deg + theta_deg_step * 0.5) * DEG_TO_RAD)));

for (auto& vertex : vertices) {

if (vertex.z > 0) {

auto noise_value = ofNoise(vertex.x * 0.005, vertex.y * 0.005, ofGetFrameNum() * 0.01);

vertex.z = ofMap(noise_value, 0, 1, 0, 100);

}

this->face.addVertices(vertices);

for (auto& vertex : vertices) {

if (vertex.z > 0) {

vertex.z += 0.1;

}

this->frame.addVertices(vertices);

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

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

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

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

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

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

}

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

void ofApp::draw() {

this->cam.begin();

for (int x = -650; x <= 650; x += 650) {

for (int y = -650; y <= 650; y += 650) {

ofPushMatrix();

ofTranslate(x, y, 0);

ofRotateY(ofRandom(360) + ofGetFrameNum() * 0.31);

ofRotateX(ofRandom(360) + ofGetFrameNum() * 0.89);

ofSetColor(239);

this->face.draw();

ofSetColor(39);

this->frame.draw();

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20201210

2020年12月9日2020年12月9日

Wriggling Spheres. Draw by openFrameworks

[ Video ]

[ About ]
うごめく球体。

Wriggling Spheres.

[ 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;
	ofIcoSpherePrimitive ico_sphere;
	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;

ofIcoSpherePrimitive ico_sphere;

ofMesh face, frame;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofEnableDepthTest();

	this->ico_sphere = ofIcoSpherePrimitive(65, 2);
	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	ofSeedRandom(39);

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

	int radius_start = 65;
	int radius_max = 180;
	for (auto& triangle : this->ico_sphere.getMesh().getUniqueFaces()) {

		auto noise_seed_x = ofRandom(1000);
		auto noise_seed_y = ofRandom(1000);
		auto noise_seed_z = ofRandom(1000);

		auto noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005);
		int radius_end = noise_value > 0.8 ? ofMap(noise_value, 0.8, 1, radius_start, radius_max) : radius_start;
		this->frame.addVertex(glm::vec3());
		for (int radius = radius_start; radius <= radius_end; radius += 1) {

			auto mesh_index = this->face.getNumVertices();
			auto frame_index = this->frame.getNumVertices();

			auto param = ofMap(radius, radius_start, radius_max, 0, PI * 0.25);

			auto angle_x = ofMap(ofNoise(noise_seed_x, radius * 0.03 + ofGetFrameNum() * 0.005), 0, 1, -param, param);
			auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));
			auto angle_y = ofMap(ofNoise(noise_seed_y, radius * 0.03 + ofGetFrameNum() * 0.005), 0, 1, -param, param);
			auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));
			auto angle_z = ofMap(ofNoise(noise_seed_z, radius * 0.03 + ofGetFrameNum() * 0.005), 0, 1, -param, param);
			auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

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

			vector<glm::vec3> vertices;
			vertices.push_back(glm::vec4(loc + triangle.getVertex(0) - avg, 0) * rotation_z * rotation_y * rotation_x);
			vertices.push_back(glm::vec4(loc + triangle.getVertex(1) - avg, 0) * rotation_z * rotation_y * rotation_x);
			vertices.push_back(glm::vec4(loc + triangle.getVertex(2) - avg, 0) * rotation_z * rotation_y * rotation_x);

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

			if (radius == radius_start || radius == radius_end) {

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

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

			if (radius > radius_start) {

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

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


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

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.75);

	ofSetColor(239);
	this->frame.drawWireframe();

	ofSetColor(39);
	this->face.draw();

	this->cam.end();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

this->ico_sphere = ofIcoSpherePrimitive(65, 2);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

int radius_start = 65;

int radius_max = 180;

for (auto& triangle : this->ico_sphere.getMesh().getUniqueFaces()) {

auto noise_seed_x = ofRandom(1000);

auto noise_seed_y = ofRandom(1000);

auto noise_seed_z = ofRandom(1000);

auto noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005);

int radius_end = noise_value > 0.8 ? ofMap(noise_value, 0.8, 1, radius_start, radius_max) : radius_start;

this->frame.addVertex(glm::vec3());

for (int radius = radius_start; radius <= radius_end; radius += 1) {

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

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

auto param = ofMap(radius, radius_start, radius_max, 0, PI * 0.25);

auto angle_x = ofMap(ofNoise(noise_seed_x, radius * 0.03 + ofGetFrameNum() * 0.005), 0, 1, -param, param);

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

auto angle_y = ofMap(ofNoise(noise_seed_y, radius * 0.03 + ofGetFrameNum() * 0.005), 0, 1, -param, param);

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

auto angle_z = ofMap(ofNoise(noise_seed_z, radius * 0.03 + ofGetFrameNum() * 0.005), 0, 1, -param, param);

auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

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

glm::vec3 loc = glm::normalize(avg) * radius;

vector<glm::vec3> vertices;

vertices.push_back(glm::vec4(loc + triangle.getVertex(0) - avg, 0) * rotation_z * rotation_y * rotation_x);

vertices.push_back(glm::vec4(loc + triangle.getVertex(1) - avg, 0) * rotation_z * rotation_y * rotation_x);

vertices.push_back(glm::vec4(loc + triangle.getVertex(2) - avg, 0) * rotation_z * rotation_y * rotation_x);

this->face.addVertices(vertices);

this->frame.addVertices(vertices);

if (radius == radius_start || radius == radius_end) {

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

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

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

this->frame.addIndex(frame_index + 2); this->frame.addIndex(frame_index + 0);

}

if (radius > radius_start) {

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

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

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

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

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

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

this->frame.addIndex(frame_index + 0); this->frame.addIndex(frame_index - 3);

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.75);

ofSetColor(239);

this->frame.drawWireframe();

ofSetColor(39);

this->face.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20201209

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