数学から創るジェネラティブアート – ページ 2

2020年3月1日2020年3月1日

Congruence relation. openFrameworks

[ Video ]

[ About ]
Processing勉強会で作ったやつ。 #数学から創るジェネラティブアートの第6章合同な数を (i * j + FrameCount) % mod にして周期的な動きを付けました。

Congruence relation.(x * y + FrameCount) % mod.

[ 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 setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float height, float width, float depth);

	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 setBoxToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float height, float width, float depth);

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 mod = 39;
	for (int x = 0; x < mod; x += 1) {

		for (int y = 0; y < mod; y += 1) {

			int num = (x * y + ofGetFrameNum()) % 39;
		
			auto location = glm::vec3((x * 10) - ((mod * 10) * 0.5) + 5, (y * 10) - ((mod * 10) * 0.5) + 5, 0);
			auto size = num > 0 ? ofMap(num, 0, mod, 10, 0) : 0;

			this->setBoxToMesh(this->face, this->frame, location, size, size, size);
		}
	}
}

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

	this->cam.begin();

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

	ofSetColor(239);
	this->frame.drawWireframe();
	
	this->cam.end();
}

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

	int index = face_target.getVertices().size();

	face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * 0.5 * 0.99, depth * -0.5 * 0.99));
	face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * 0.5 * 0.99, depth * -0.5 * 0.99));
	face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * 0.5 * 0.99, depth * 0.5 * 0.99));
	face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * 0.5 * 0.99, depth * 0.5 * 0.99));

	face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * -0.5 * 0.99, depth * -0.5 * 0.99));
	face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * -0.5 * 0.99, depth * -0.5 * 0.99));
	face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * -0.5 * 0.99, depth * 0.5 * 0.99));
	face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * -0.5 * 0.99, depth * 0.5 * 0.99));

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

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

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

	face_target.addIndex(index + 1); face_target.addIndex(index + 5); face_target.addIndex(index + 6);
	face_target.addIndex(index + 6); face_target.addIndex(index + 2); face_target.addIndex(index + 1);

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

	face_target.addIndex(index + 3); face_target.addIndex(index + 7); face_target.addIndex(index + 4);
	face_target.addIndex(index + 4); face_target.addIndex(index + 0); face_target.addIndex(index + 3);

	frame_target.addVertex(location + glm::vec3(width * -0.5, height * 0.5, depth * -0.5));
	frame_target.addVertex(location + glm::vec3(width * 0.5, height * 0.5, depth * -0.5));
	frame_target.addVertex(location + glm::vec3(width * 0.5, height * 0.5, depth * 0.5));
	frame_target.addVertex(location + glm::vec3(width * -0.5, height * 0.5, depth * 0.5));

	frame_target.addVertex(location + glm::vec3(width * -0.5, height * -0.5, depth * -0.5));
	frame_target.addVertex(location + glm::vec3(width * 0.5, height * -0.5, depth * -0.5));
	frame_target.addVertex(location + glm::vec3(width * 0.5, height * -0.5, depth * 0.5));
	frame_target.addVertex(location + glm::vec3(width * -0.5, height * -0.5, depth * 0.5));

	frame_target.addIndex(index + 0); frame_target.addIndex(index + 1);
	frame_target.addIndex(index + 1); frame_target.addIndex(index + 2);
	frame_target.addIndex(index + 2); frame_target.addIndex(index + 3);
	frame_target.addIndex(index + 3); frame_target.addIndex(index + 0);

	frame_target.addIndex(index + 4); frame_target.addIndex(index + 5);
	frame_target.addIndex(index + 5); frame_target.addIndex(index + 6);
	frame_target.addIndex(index + 6); frame_target.addIndex(index + 7);
	frame_target.addIndex(index + 7); frame_target.addIndex(index + 4);

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

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

int mod = 39;

for (int x = 0; x < mod; x += 1) {

for (int y = 0; y < mod; y += 1) {

int num = (x * y + ofGetFrameNum()) % 39;

auto location = glm::vec3((x * 10) - ((mod * 10) * 0.5) + 5, (y * 10) - ((mod * 10) * 0.5) + 5, 0);

auto size = num > 0 ? ofMap(num, 0, mod, 10, 0) : 0;

this->setBoxToMesh(this->face, this->frame, location, size, size, size);

}

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

void ofApp::draw() {

this->cam.begin();

ofSetColor(39);

this->face.draw();

ofSetColor(239);

this->frame.drawWireframe();

this->cam.end();

}

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

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

int index = face_target.getVertices().size();

face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * 0.5 * 0.99, depth * -0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * 0.5 * 0.99, depth * -0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * 0.5 * 0.99, depth * 0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * 0.5 * 0.99, depth * 0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * -0.5 * 0.99, depth * -0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * -0.5 * 0.99, depth * -0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * 0.5 * 0.99, height * -0.5 * 0.99, depth * 0.5 * 0.99));

face_target.addVertex(location + glm::vec3(width * -0.5 * 0.99, height * -0.5 * 0.99, depth * 0.5 * 0.99));

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

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

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

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

face_target.addIndex(index + 0); face_target.addIndex(index + 4); face_target.addIndex(index + 1);

face_target.addIndex(index + 4); face_target.addIndex(index + 5); face_target.addIndex(index + 1);

face_target.addIndex(index + 1); face_target.addIndex(index + 5); face_target.addIndex(index + 6);

face_target.addIndex(index + 6); face_target.addIndex(index + 2); face_target.addIndex(index + 1);

face_target.addIndex(index + 2); face_target.addIndex(index + 6); face_target.addIndex(index + 7);

face_target.addIndex(index + 7); face_target.addIndex(index + 3); face_target.addIndex(index + 2);

face_target.addIndex(index + 3); face_target.addIndex(index + 7); face_target.addIndex(index + 4);

face_target.addIndex(index + 4); face_target.addIndex(index + 0); face_target.addIndex(index + 3);

frame_target.addVertex(location + glm::vec3(width * -0.5, height * 0.5, depth * -0.5));

frame_target.addVertex(location + glm::vec3(width * 0.5, height * 0.5, depth * -0.5));

frame_target.addVertex(location + glm::vec3(width * 0.5, height * 0.5, depth * 0.5));

frame_target.addVertex(location + glm::vec3(width * -0.5, height * 0.5, depth * 0.5));

frame_target.addVertex(location + glm::vec3(width * -0.5, height * -0.5, depth * -0.5));

frame_target.addVertex(location + glm::vec3(width * 0.5, height * -0.5, depth * -0.5));

frame_target.addVertex(location + glm::vec3(width * 0.5, height * -0.5, depth * 0.5));

frame_target.addVertex(location + glm::vec3(width * -0.5, height * -0.5, depth * 0.5));

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

frame_target.addIndex(index + 1); frame_target.addIndex(index + 2);

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

frame_target.addIndex(index + 3); frame_target.addIndex(index + 0);

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

frame_target.addIndex(index + 5); frame_target.addIndex(index + 6);

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

frame_target.addIndex(index + 7); frame_target.addIndex(index + 4);

frame_target.addIndex(index + 0); frame_target.addIndex(index + 4);

frame_target.addIndex(index + 1); frame_target.addIndex(index + 5);

frame_target.addIndex(index + 2); frame_target.addIndex(index + 6);

frame_target.addIndex(index + 3); frame_target.addIndex(index + 7);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200301

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2019年11月23日

Square spiral. openFrameworks

[ Video ]

[ About ]
正方形のらせんを見比べる。

Square spiral.

[ 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) {};

	int gon;
	vector<float> gap_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) {};

int gon;

vector<float> gap_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(1.5);

	ofNoFill();
}

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

	this->gon = 4;
	this->gon = 8;
	for (auto i = 0; i < this->gon; i++) {

		this->gap_list.push_back(0);
	}
} 

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

	auto span = 144;
	auto radius = 95;
	int deg_span = 360 / 4;
	for (int x = span * 0.5; x < ofGetWidth(); x += span) {

		for (int y = span * 0.5; y < ofGetHeight(); y += span) {

			ofSeedRandom(x + ofGetWidth() * y);

			ofPushMatrix();
			ofTranslate(x, y);

			for (auto& gap : this->gap_list) { gap = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 0.001, 0.1); }

			vector<glm::vec2> vertices;
			auto first = true;
			for (int i = 0; i < 1000; i++) {

				if (first) {

					for (auto deg = 0 + 45; deg < 360 + 45; deg += deg_span) {

						vertices.push_back(glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));
					}

					ofBeginShape();
					ofVertices(vertices);
					ofEndShape(true);

					first = false;
				}
				else {

					vector<glm::vec2> tmp;
					for (auto k = 0; k < vertices.size(); k++) {

						tmp.push_back(vertices[k] + (vertices[(k + 1) % vertices.size()] - vertices[k]) * this->gap_list[k]);
					}

					for (auto k = 0; k < vertices.size(); k++) {

						ofDrawLine(vertices[k], tmp[k]);
					}

					vertices = tmp;
				}

				if (glm::distance(vertices[0], vertices[1]) < 1) {

					break;
				}
			}

			ofPopMatrix();
		}
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(1.5);

ofNoFill();

}

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

void ofApp::update() {

this->gon = 4;

this->gon = 8;

for (auto i = 0; i < this->gon; i++) {

this->gap_list.push_back(0);

}

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

void ofApp::draw() {

auto span = 144;

auto radius = 95;

int deg_span = 360 / 4;

for (int x = span * 0.5; x < ofGetWidth(); x += span) {

for (int y = span * 0.5; y < ofGetHeight(); y += span) {

ofSeedRandom(x + ofGetWidth() * y);

ofPushMatrix();

ofTranslate(x, y);

for (auto& gap : this->gap_list) { gap = ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, 0.001, 0.1); }

vector<glm::vec2> vertices;

auto first = true;

for (int i = 0; i < 1000; i++) {

if (first) {

for (auto deg = 0 + 45; deg < 360 + 45; deg += deg_span) {

vertices.push_back(glm::vec2(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD)));

}

ofBeginShape();

ofVertices(vertices);

ofEndShape(true);

first = false;

}

else {

vector<glm::vec2> tmp;

for (auto k = 0; k < vertices.size(); k++) {

tmp.push_back(vertices[k] + (vertices[(k + 1) % vertices.size()] - vertices[k]) * this->gap_list[k]);

}

for (auto k = 0; k < vertices.size(); k++) {

ofDrawLine(vertices[k], tmp[k]);

}

vertices = tmp;

}

if (glm::distance(vertices[0], vertices[1]) < 1) {

break;

}

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191123

[ほしいものリスト]
Amazon

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2019年11月20日2019年11月20日

Spiral cube. openFrameworks

[ Video ]

[ About ]
立方体でらせんを考えてみる。

Spiral cube.

[ 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;
};

#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;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

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

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

}

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

	this->cam.begin();

	auto len = 150;
	auto gap = 0.05;
	vector<glm::vec3> vertices;
	for (int i = 0; i < 100; i++) {

		if (i == 0) {

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

			vertices.push_back(glm::vec3(-len, -len, -len));
			vertices.push_back(glm::vec3(len, -len, -len));
			vertices.push_back(glm::vec3(len, -len, len));
			vertices.push_back(glm::vec3(-len, -len, len));
		}
		else {

			vector<glm::vec3> tmp;

			tmp.push_back((vertices[1] - vertices[0]) * gap + (vertices[4] - vertices[0]) * gap * 0.5 + vertices[0]);
			tmp.push_back((vertices[2] - vertices[1]) * gap + (vertices[5] - vertices[1]) * gap * 0.5 + vertices[1]);
			tmp.push_back((vertices[3] - vertices[2]) * gap + (vertices[6] - vertices[2]) * gap * 0.5 + vertices[2]);
			tmp.push_back((vertices[0] - vertices[3]) * gap + (vertices[7] - vertices[3]) * gap * 0.5 + vertices[3]);

			tmp.push_back((vertices[5] - vertices[4]) * gap + (vertices[0] - vertices[4]) * gap * 0.5 + vertices[4]);
			tmp.push_back((vertices[6] - vertices[5]) * gap + (vertices[1] - vertices[5]) * gap * 0.5 + vertices[5]);
			tmp.push_back((vertices[7] - vertices[6]) * gap + (vertices[2] - vertices[6]) * gap * 0.5 + vertices[6]);
			tmp.push_back((vertices[4] - vertices[7]) * gap + (vertices[3] - vertices[7]) * gap * 0.5 + vertices[7]);

			for (int i = 0; i < 8; i++) {

				ofDrawLine(vertices[i], tmp[i]);
			}

			vertices = tmp;
		}

		if (i == 0 || ofGetFrameNum() % 20 == i % 20) {

			ofSetLineWidth(2);

			ofDrawLine(vertices[0], vertices[1]);
			ofDrawLine(vertices[1], vertices[2]);
			ofDrawLine(vertices[2], vertices[3]);
			ofDrawLine(vertices[3], vertices[0]);

			ofDrawLine(vertices[4], vertices[5]);
			ofDrawLine(vertices[5], vertices[6]);
			ofDrawLine(vertices[6], vertices[7]);
			ofDrawLine(vertices[7], vertices[4]);

			ofDrawLine(vertices[0], vertices[4]);
			ofDrawLine(vertices[1], vertices[5]);
			ofDrawLine(vertices[2], vertices[6]);
			ofDrawLine(vertices[3], vertices[7]);

			for (auto& vertex : vertices) {

				ofDrawSphere(vertex, ofMap(i, 0, 100, 3, 0.5));
			}

			ofSetLineWidth(1);
		}
	}

	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);

ofSetColor(39);

ofSetLineWidth(2);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

auto len = 150;

auto gap = 0.05;

vector<glm::vec3> vertices;

for (int i = 0; i < 100; i++) {

if (i == 0) {

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

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

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

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

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

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

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

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

}

else {

vector<glm::vec3> tmp;

tmp.push_back((vertices[1] - vertices[0]) * gap + (vertices[4] - vertices[0]) * gap * 0.5 + vertices[0]);

tmp.push_back((vertices[2] - vertices[1]) * gap + (vertices[5] - vertices[1]) * gap * 0.5 + vertices[1]);

tmp.push_back((vertices[3] - vertices[2]) * gap + (vertices[6] - vertices[2]) * gap * 0.5 + vertices[2]);

tmp.push_back((vertices[0] - vertices[3]) * gap + (vertices[7] - vertices[3]) * gap * 0.5 + vertices[3]);

tmp.push_back((vertices[5] - vertices[4]) * gap + (vertices[0] - vertices[4]) * gap * 0.5 + vertices[4]);

tmp.push_back((vertices[6] - vertices[5]) * gap + (vertices[1] - vertices[5]) * gap * 0.5 + vertices[5]);

tmp.push_back((vertices[7] - vertices[6]) * gap + (vertices[2] - vertices[6]) * gap * 0.5 + vertices[6]);

tmp.push_back((vertices[4] - vertices[7]) * gap + (vertices[3] - vertices[7]) * gap * 0.5 + vertices[7]);

for (int i = 0; i < 8; i++) {

ofDrawLine(vertices[i], tmp[i]);

}

vertices = tmp;

}

if (i == 0 || ofGetFrameNum() % 20 == i % 20) {

ofSetLineWidth(2);

ofDrawLine(vertices[0], vertices[1]);

ofDrawLine(vertices[1], vertices[2]);

ofDrawLine(vertices[2], vertices[3]);

ofDrawLine(vertices[3], vertices[0]);

ofDrawLine(vertices[4], vertices[5]);

ofDrawLine(vertices[5], vertices[6]);

ofDrawLine(vertices[6], vertices[7]);

ofDrawLine(vertices[7], vertices[4]);

ofDrawLine(vertices[0], vertices[4]);

ofDrawLine(vertices[1], vertices[5]);

ofDrawLine(vertices[2], vertices[6]);

ofDrawLine(vertices[3], vertices[7]);

for (auto& vertex : vertices) {

ofDrawSphere(vertex, ofMap(i, 0, 100, 3, 0.5));

}

ofSetLineWidth(1);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191120

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