2020年3月 – ページ 8 – プログラミング de 落描き

2020年3月10日2020年3月10日

Twisting circles. openFrameworks

[ Video ]

[ About ]
ねじれる円。

Twisting circles.

[ 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& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height);

	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) {};

void setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height);

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() {

	ofSeedRandom(39);

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

	for (int radius = 50; radius < 200; radius += 40) {

		this->setRingToMesh(this->face, this->frame, glm::vec3(), radius, 18, 20);
	}
}

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

	this->cam.begin();

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

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

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height) {

	int index = face_target.getNumVertices();
	auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

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

		auto face_index = face_target.getNumVertices();

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

		for (auto& vertex : vertices) {

			auto angle_x = ofMap(ofNoise(noise_seed.x + vertex.x * ofMap(radius, 50, 350, 0.0005, 0.00035), ofGetFrameNum() * ofMap(radius, 50, 350, 0.0035, 0.001)), 0, 1, -PI, PI);
			auto angle_y = ofMap(ofNoise(noise_seed.y + vertex.y * ofMap(radius, 50, 350, 0.0005, 0.00035), ofGetFrameNum() * ofMap(radius, 50, 350, 0.0035, 0.001)), 0, 1, -PI, PI);
			auto angle_z = ofMap(ofNoise(noise_seed.z + vertex.z * ofMap(radius, 50, 350, 0.0005, 0.00035), ofGetFrameNum() * ofMap(radius, 50, 350, 0.0035, 0.001)), 0, 1, -PI, PI);

			auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));
			auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));
			auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

			vertex = glm::vec4(vertex, 0) * rotation_z * rotation_y * rotation_x + glm::vec4(location, 0);
		}

		face_target.addVertices(vertices);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);
		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

		auto frame_index = frame_target.getNumVertices();

		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);
		frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);
	}
}

//--------------------------------------------------------------
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() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

for (int radius = 50; radius < 200; radius += 40) {

this->setRingToMesh(this->face, this->frame, glm::vec3(), radius, 18, 20);

}

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

void ofApp::draw() {

this->cam.begin();

ofSetColor(39);

this->face.draw();

ofSetColor(239);

this->frame.drawWireframe();

this->cam.end();

}

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

void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height) {

int index = face_target.getNumVertices();

auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

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

auto face_index = face_target.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + 1) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + 1) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

for (auto& vertex : vertices) {

auto angle_x = ofMap(ofNoise(noise_seed.x + vertex.x * ofMap(radius, 50, 350, 0.0005, 0.00035), ofGetFrameNum() * ofMap(radius, 50, 350, 0.0035, 0.001)), 0, 1, -PI, PI);

auto angle_y = ofMap(ofNoise(noise_seed.y + vertex.y * ofMap(radius, 50, 350, 0.0005, 0.00035), ofGetFrameNum() * ofMap(radius, 50, 350, 0.0035, 0.001)), 0, 1, -PI, PI);

auto angle_z = ofMap(ofNoise(noise_seed.z + vertex.z * ofMap(radius, 50, 350, 0.0005, 0.00035), ofGetFrameNum() * ofMap(radius, 50, 350, 0.0035, 0.001)), 0, 1, -PI, PI);

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

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

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

vertex = glm::vec4(vertex, 0) * rotation_z * rotation_y * rotation_x + glm::vec4(location, 0);

}

face_target.addVertices(vertices);

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

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 3);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

auto frame_index = frame_target.getNumVertices();

frame_target.addVertices(vertices);

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

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);

frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);

frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200310

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2020年3月9日

Torus in Torus. openFrameworks

[ Video ]

[ About ]
トーラス in トーラス。

Torus in Torus.

[ 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) {};

	glm::vec3 make_point(float R, float r, float u, float v);

	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) {};

glm::vec3 make_point(float R, float r, float u, float v);

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();

	auto R = 100.f;
	auto u_step = 1.f;
	auto v_step = 1.f;

	for (int i = 0; i < 7; i++) {

		auto r = 25.f;

		float angle_z = (i * u_step * 2) * DEG_TO_RAD;
		auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

		auto v_start = 0.f;
		auto v_len = 360.f;

		if (i % 2 == 0) {

			v_start = (ofGetFrameNum() + i * 15) % 360;
			v_len = 120;
			r = 15;
		}

		for (auto v = v_start; v < v_start + v_len; v += v_step) {

			vector<glm::vec3> vertices{
				glm::vec4(this->make_point(R, r, v * u_step * 17, v * 2), 0) * rotation_z,
				glm::vec4(this->make_point(R, r, (v + v_step) * u_step * 17, (v + v_step) * 2), 0) * rotation_z,
				glm::vec4(this->make_point(R, r, v * u_step * 17, (v + v_step) * 2), 0) * rotation_z,
				glm::vec4(this->make_point(R, r, (v - v_step) * u_step * 17, v * 2), 0) * rotation_z
			};

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

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

			for (int k = 0; k < 4; k++) {

				i % 2 == 0 ? this->face.addColor(ofColor(39)) : this->face.addColor(ofColor(239));
				i % 2 == 0 ? this->frame.addColor(ofColor(239)) : this->frame.addColor(ofColor(39));
			}
		}
	}
}


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

	this->cam.begin();

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

	this->cam.end();
}

//--------------------------------------------------------------
glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

	auto x = (R + r * cos(u)) * cos(v);
	auto y = (R + r * cos(u)) * sin(v);
	auto z = r * sin(u);

	return glm::vec3(x, y, z);
}


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

auto R = 100.f;

auto u_step = 1.f;

auto v_step = 1.f;

for (int i = 0; i < 7; i++) {

auto r = 25.f;

float angle_z = (i * u_step * 2) * DEG_TO_RAD;

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

auto v_start = 0.f;

auto v_len = 360.f;

if (i % 2 == 0) {

v_start = (ofGetFrameNum() + i * 15) % 360;

v_len = 120;

r = 15;

}

for (auto v = v_start; v < v_start + v_len; v += v_step) {

vector<glm::vec3> vertices{

glm::vec4(this->make_point(R, r, v * u_step * 17, v * 2), 0) * rotation_z,

glm::vec4(this->make_point(R, r, (v + v_step) * u_step * 17, (v + v_step) * 2), 0) * rotation_z,

glm::vec4(this->make_point(R, r, v * u_step * 17, (v + v_step) * 2), 0) * rotation_z,

glm::vec4(this->make_point(R, r, (v - v_step) * u_step * 17, v * 2), 0) * rotation_z

};

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

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

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

for (int k = 0; k < 4; k++) {

i % 2 == 0 ? this->face.addColor(ofColor(39)) : this->face.addColor(ofColor(239));

i % 2 == 0 ? this->frame.addColor(ofColor(239)) : this->frame.addColor(ofColor(39));

}

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

void ofApp::draw() {

this->cam.begin();

this->face.draw();

this->frame.drawWireframe();

this->cam.end();

}

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

glm::vec3 ofApp::make_point(float R, float r, float u, float v) {

// 数学デッサン教室描いて楽しむ数学たち　P.31

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

auto x = (R + r * cos(u)) * cos(v);

auto y = (R + r * cos(u)) * sin(v);

auto z = r * sin(u);

return glm::vec3(x, y, z);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200309

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2020年3月8日2020年3月8日

Cube made of triangular pyramids. openFrameworks

[ Video ]

[ About ]
三角錐で出来た立方体。

Cube made of triangular pyramids.

[ 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(30);
	ofSetWindowTitle("openFrameworks");

	ofBackground(239);
	ofEnableDepthTest();

	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}
//--------------------------------------------------------------
void ofApp::update() {

	ofSeedRandom(39);

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

	int len = 100;

	for (int r = 0; r < 6; r++) {

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3());
		vertices.push_back(glm::vec3(-len * 0.5, -len * 0.5, -len * 0.5));
		vertices.push_back(glm::vec3(len * 0.5, -len * 0.5, -len * 0.5));
		vertices.push_back(glm::vec3(len * 0.5, -len * 0.5, len * 0.5));
		vertices.push_back(glm::vec3(-len * 0.5, -len * 0.5, len * 0.5));
	
		int angle;
		glm::highp_mat4 rotation;
		float noise_value;
		if (r < 4) {
			angle = r * 90;
			rotation = glm::rotate(glm::mat4(), (float)(angle * DEG_TO_RAD), glm::vec3(1, 0, 0));
			noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01);

		}
		else {

			angle = r == 5 ? 90 : 270;
			rotation = glm::rotate(glm::mat4(), (float)(angle * DEG_TO_RAD), glm::vec3(0, 0, 1));
			noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01);
		}

		auto rotation_y = glm::rotate(glm::mat4(), (float)(noise_value < 0.55 ? 0 : ofMap(noise_value, 0.55, 1, 0, 12)), glm::vec3(0, 1, 0));
		for (auto& vertex : vertices) { 

			vertex = (glm::vec4(vertex, 0) + glm::vec4(0, noise_value < 0.48 ? -1 : ofMap(noise_value, 0.48, 1, -1, -150), 0, 0)) * rotation_y * rotation;
		}

		auto index = this->face.getNumVertices();
		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 + 0); this->face.addIndex(index + 3); this->face.addIndex(index + 4);
		this->face.addIndex(index + 0); this->face.addIndex(index + 4); this->face.addIndex(index + 1);

		this->face.addIndex(index + 1); this->face.addIndex(index + 2); this->face.addIndex(index + 3);
		this->face.addIndex(index + 1); this->face.addIndex(index + 3); this->face.addIndex(index + 4);

		this->frame.addIndex(index + 0); this->frame.addIndex(index + 1);
		this->frame.addIndex(index + 0); this->frame.addIndex(index + 2);
		this->frame.addIndex(index + 0); this->frame.addIndex(index + 3);
		this->frame.addIndex(index + 0); this->frame.addIndex(index + 4);

		this->frame.addIndex(index + 1); this->frame.addIndex(index + 2);
		this->frame.addIndex(index + 2); this->frame.addIndex(index + 3);
		this->frame.addIndex(index + 3); this->frame.addIndex(index + 4);
		this->frame.addIndex(index + 4); this->frame.addIndex(index + 1);
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.85);
	ofRotateX(ofGetFrameNum() * 0.5);

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

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

	this->cam.end();
}

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

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

100

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

int len = 100;

for (int r = 0; r < 6; r++) {

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3());

vertices.push_back(glm::vec3(-len * 0.5, -len * 0.5, -len * 0.5));

vertices.push_back(glm::vec3(len * 0.5, -len * 0.5, -len * 0.5));

vertices.push_back(glm::vec3(len * 0.5, -len * 0.5, len * 0.5));

vertices.push_back(glm::vec3(-len * 0.5, -len * 0.5, len * 0.5));

int angle;

glm::highp_mat4 rotation;

float noise_value;

if (r < 4) {

angle = r * 90;

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

noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01);

}

else {

angle = r == 5 ? 90 : 270;

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

noise_value = ofNoise(ofRandom(1000), ofGetFrameNum() * 0.01);

}

auto rotation_y = glm::rotate(glm::mat4(), (float)(noise_value < 0.55 ? 0 : ofMap(noise_value, 0.55, 1, 0, 12)), glm::vec3(0, 1, 0));

for (auto& vertex : vertices) {

vertex = (glm::vec4(vertex, 0) + glm::vec4(0, noise_value < 0.48 ? -1 : ofMap(noise_value, 0.48, 1, -1, -150), 0, 0)) * rotation_y * rotation;

}

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

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 + 0); this->face.addIndex(index + 3); this->face.addIndex(index + 4);

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

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

this->face.addIndex(index + 1); this->face.addIndex(index + 3); this->face.addIndex(index + 4);

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

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

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

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

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

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

this->frame.addIndex(index + 3); this->frame.addIndex(index + 4);

this->frame.addIndex(index + 4); this->frame.addIndex(index + 1);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.85);

ofRotateX(ofGetFrameNum() * 0.5);

ofSetColor(39);

this->face.draw();

ofSetColor(239);

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200308

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