ofMesh – ページ 217 – プログラミング de 落描き

2019年11月29日2019年11月29日

Cluster. openFrameworks

[ Video ]

[ About ]
帯の塊。指定範囲内に留まって頂く事に成功しました。

Cluster.

[ 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;

	vector<ofMesh> mesh_list;
	vector<ofMesh> frame_list;
	vector<glm::vec3> direction_list;
	vector<glm::vec3> noise_seed_list;
	vector<float> noise_step_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) {};

ofEasyCam cam;

vector<ofMesh> mesh_list;

vector<ofMesh> frame_list;

vector<glm::vec3> direction_list;

vector<glm::vec3> noise_seed_list;

vector<float> noise_step_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	for (int i = 0; i < 120; i++) {

		ofMesh mesh, frame;
		frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
		glm::vec3 base = glm::vec3(ofRandom(-100, 100), ofRandom(-100, 100), ofRandom(-100, 100));
		switch ((int)ofRandom(3)) {
		case 0:
			mesh.addVertex(base + glm::vec3(5, 0, 0));
			mesh.addVertex(base + glm::vec3(-5, 0, 0));
			frame.addVertex(base + glm::vec3(5, 0, 0));
			frame.addVertex(base + glm::vec3(-5, 0, 0));
			break;
		case 1:
			mesh.addVertex(base + glm::vec3(0, 5, 0));
			mesh.addVertex(base + glm::vec3(0, -5, 0));
			frame.addVertex(base + glm::vec3(0, 5, 0));
			frame.addVertex(base + glm::vec3(0, -5, 0));
			break;
		case 2:
			mesh.addVertex(base + glm::vec3(0, 0, 5));
			mesh.addVertex(base + glm::vec3(0, 0, -5));
			frame.addVertex(base + glm::vec3(0, 0, 5));
			frame.addVertex(base + glm::vec3(0, 0, -5));
			break;
		}

		frame.addIndex(0);
		frame.addIndex(1);

		this->mesh_list.push_back(mesh);
		this->frame_list.push_back(frame);

		auto direction = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));
		direction = glm::normalize(direction) * 5;
		this->direction_list.push_back(direction);

		auto noise_seed = glm::vec3(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)));
		this->noise_seed_list.push_back(noise_seed);

		this->noise_step_list.push_back(0.f);
	}
}

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

	for (int i = this->mesh_list.size() - 1; i > -1; i--) {

		while (true) {

			this->noise_step_list[i] += 0.01;

			auto angle_x = ofMap(ofNoise(this->noise_seed_list[i].x, this->noise_step_list[i]), 0, 1, -PI, PI);
			auto angle_y = ofMap(ofNoise(this->noise_seed_list[i].y, this->noise_step_list[i]), 0, 1, -PI, PI);
			auto angle_z = ofMap(ofNoise(this->noise_seed_list[i].z, this->noise_step_list[i]), 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));

			glm::vec3 rotate_direction = glm::vec4(this->direction_list[i], 0) * rotation_z * rotation_y * rotation_x;

			auto right = this->mesh_list[i].getVertex(this->mesh_list[i].getNumVertices() - 2);
			auto left = this->mesh_list[i].getVertex(this->mesh_list[i].getNumVertices() - 1);
			auto center = (right + left) / 2;

			auto feature = center + rotate_direction;
			if (glm::length(feature) < 300) {

				this->mesh_list[i].addVertex(right + rotate_direction);
				this->mesh_list[i].addVertex(left + rotate_direction);

				this->frame_list[i].addVertex(right + rotate_direction);
				this->frame_list[i].addVertex(left + rotate_direction);

				break;
			}
		}

		if (this->mesh_list[i].getNumVertices() > 150) {

			this->mesh_list[i].removeVertex(0);
			this->mesh_list[i].removeVertex(1);
		}
		else {

			int index = this->mesh_list[i].getNumVertices() - 1;
			this->mesh_list[i].addIndex(index); this->mesh_list[i].addIndex(index - 2); this->mesh_list[i].addIndex(index - 3);
			this->mesh_list[i].addIndex(index); this->mesh_list[i].addIndex(index - 1); this->mesh_list[i].addIndex(index - 3);
		}

		if (this->frame_list[i].getNumVertices() > 100) {

			this->frame_list[i].removeVertex(0);
			this->frame_list[i].removeVertex(1);
		}
		else {

			int index = this->frame_list[i].getNumVertices() - 1;
			this->frame_list[i].addIndex(index); this->frame_list[i].addIndex(index - 2);
			this->frame_list[i].addIndex(index - 1); this->frame_list[i].addIndex(index - 3);

			if (index == 99) {

				this->frame_list[i].addIndex(98);
				this->frame_list[i].addIndex(99);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.25);

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

		i == 0 ? ofSetColor(255, 0, 0) : ofSetColor(39);
		this->mesh_list[i].draw();

		ofSetColor(239);
		this->frame_list[i].drawWireframe();
	}

	this->cam.end();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofEnableDepthTest();

for (int i = 0; i < 120; i++) {

ofMesh mesh, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

glm::vec3 base = glm::vec3(ofRandom(-100, 100), ofRandom(-100, 100), ofRandom(-100, 100));

switch ((int)ofRandom(3)) {

case 0:

mesh.addVertex(base + glm::vec3(5, 0, 0));

mesh.addVertex(base + glm::vec3(-5, 0, 0));

frame.addVertex(base + glm::vec3(5, 0, 0));

frame.addVertex(base + glm::vec3(-5, 0, 0));

break;

case 1:

mesh.addVertex(base + glm::vec3(0, 5, 0));

mesh.addVertex(base + glm::vec3(0, -5, 0));

frame.addVertex(base + glm::vec3(0, 5, 0));

frame.addVertex(base + glm::vec3(0, -5, 0));

break;

case 2:

mesh.addVertex(base + glm::vec3(0, 0, 5));

mesh.addVertex(base + glm::vec3(0, 0, -5));

frame.addVertex(base + glm::vec3(0, 0, 5));

frame.addVertex(base + glm::vec3(0, 0, -5));

break;

}

frame.addIndex(0);

frame.addIndex(1);

this->mesh_list.push_back(mesh);

this->frame_list.push_back(frame);

auto direction = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));

direction = glm::normalize(direction) * 5;

this->direction_list.push_back(direction);

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

this->noise_seed_list.push_back(noise_seed);

this->noise_step_list.push_back(0.f);

}

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

void ofApp::update() {

for (int i = this->mesh_list.size() - 1; i > -1; i--) {

while (true) {

this->noise_step_list[i] += 0.01;

auto angle_x = ofMap(ofNoise(this->noise_seed_list[i].x, this->noise_step_list[i]), 0, 1, -PI, PI);

auto angle_y = ofMap(ofNoise(this->noise_seed_list[i].y, this->noise_step_list[i]), 0, 1, -PI, PI);

auto angle_z = ofMap(ofNoise(this->noise_seed_list[i].z, this->noise_step_list[i]), 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));

glm::vec3 rotate_direction = glm::vec4(this->direction_list[i], 0) * rotation_z * rotation_y * rotation_x;

auto right = this->mesh_list[i].getVertex(this->mesh_list[i].getNumVertices() - 2);

auto left = this->mesh_list[i].getVertex(this->mesh_list[i].getNumVertices() - 1);

auto center = (right + left) / 2;

auto feature = center + rotate_direction;

if (glm::length(feature) < 300) {

this->mesh_list[i].addVertex(right + rotate_direction);

this->mesh_list[i].addVertex(left + rotate_direction);

this->frame_list[i].addVertex(right + rotate_direction);

this->frame_list[i].addVertex(left + rotate_direction);

break;

}

if (this->mesh_list[i].getNumVertices() > 150) {

this->mesh_list[i].removeVertex(0);

this->mesh_list[i].removeVertex(1);

}

else {

int index = this->mesh_list[i].getNumVertices() - 1;

this->mesh_list[i].addIndex(index); this->mesh_list[i].addIndex(index - 2); this->mesh_list[i].addIndex(index - 3);

this->mesh_list[i].addIndex(index); this->mesh_list[i].addIndex(index - 1); this->mesh_list[i].addIndex(index - 3);

}

if (this->frame_list[i].getNumVertices() > 100) {

this->frame_list[i].removeVertex(0);

this->frame_list[i].removeVertex(1);

}

else {

int index = this->frame_list[i].getNumVertices() - 1;

this->frame_list[i].addIndex(index); this->frame_list[i].addIndex(index - 2);

this->frame_list[i].addIndex(index - 1); this->frame_list[i].addIndex(index - 3);

if (index == 99) {

this->frame_list[i].addIndex(98);

this->frame_list[i].addIndex(99);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.25);

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

i == 0 ? ofSetColor(255, 0, 0) : ofSetColor(39);

this->mesh_list[i].draw();

ofSetColor(239);

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

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191129

2019年11月28日2019年11月28日

Apartment. openFrameworks

[ Video ]

[ About ]
区切られたエリアごとに観察する。

Apartment.

[ 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;

	vector<ofMesh> mesh_list;
	vector<ofMesh> frame_list;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void windowResized(int w, int h) {};

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

ofEasyCam cam;

vector<ofMesh> mesh_list;

vector<ofMesh> frame_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofNoFill();
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);

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

	int span = 100;
	for (int x = -100; x <= 100; x += span) {

		for (int y = -100; y <= 100; y += span) {

			for (int z = -100; z <= 100; z += span) {

				ofMesh mesh, frame;
				frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
				auto base = glm::vec3(x, y, z);
				auto param = glm::vec3();
				switch ((int)ofRandom(3)) {
				case 0:
					param = glm::vec3(5, 0, 0);
					break;
				case 1:
					param = glm::vec3(0, 5, 0);
					break;
				case 2:
					param = glm::vec3(0, 0, 5);
					break;
				}
				
				auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

				for (int i = 0; i < 100; i++) {
				
					auto location = glm::vec3(
						ofMap(ofNoise(noise_seed.x, (i + ofGetFrameNum()) * 0.01), 0, 1, span * -0.35, span * 0.35),
						ofMap(ofNoise(noise_seed.y, (i + ofGetFrameNum()) * 0.01), 0, 1, span * -0.35, span * 0.35),
						ofMap(ofNoise(noise_seed.z, (i + ofGetFrameNum()) * 0.01), 0, 1, span * -0.35, span * 0.35));

					mesh.addVertex(base + location + param);
					mesh.addVertex(base + location - param);

					frame.addVertex(base + location + param);
					frame.addVertex(base + location - param);

					if (i > 0) {

						mesh.addIndex(i * 2); mesh.addIndex(i * 2 - 1); mesh.addIndex(i * 2 - 2);
						mesh.addIndex(i * 2); mesh.addIndex(i * 2 + 1); mesh.addIndex(i * 2 - 1);

						frame.addIndex(i * 2); frame.addIndex(i * 2 - 2);
						frame.addIndex(i * 2 + 1); frame.addIndex(i * 2 - 1);
					}
				}

				frame.addIndex(0); frame.addIndex(1);
				frame.addIndex(frame.getNumVertices() - 1); frame.addIndex(frame.getNumVertices() - 2);

				this->mesh_list.push_back(mesh);
				this->frame_list.push_back(frame);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.25);

	ofSetColor(39, 128);
	int span = 100;
	for (int x = -100; x <= 100; x += span) {

		for (int y = -100; y <= 100; y += span) {

			for (int z = -100; z <= 100; z += span) {

				ofDrawBox(glm::vec3(x, y, z), span);
			}
		}
	}

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

		ofSetColor(39);
		this->mesh_list[i].draw();

		ofSetColor(239);
		this->frame_list[i].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);

ofNoFill();

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh_list.clear();

this->frame_list.clear();

int span = 100;

for (int x = -100; x <= 100; x += span) {

for (int y = -100; y <= 100; y += span) {

for (int z = -100; z <= 100; z += span) {

ofMesh mesh, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

auto base = glm::vec3(x, y, z);

auto param = glm::vec3();

switch ((int)ofRandom(3)) {

case 0:

param = glm::vec3(5, 0, 0);

break;

case 1:

param = glm::vec3(0, 5, 0);

break;

case 2:

param = glm::vec3(0, 0, 5);

break;

}

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

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

auto location = glm::vec3(

ofMap(ofNoise(noise_seed.x, (i + ofGetFrameNum()) * 0.01), 0, 1, span * -0.35, span * 0.35),

ofMap(ofNoise(noise_seed.y, (i + ofGetFrameNum()) * 0.01), 0, 1, span * -0.35, span * 0.35),

ofMap(ofNoise(noise_seed.z, (i + ofGetFrameNum()) * 0.01), 0, 1, span * -0.35, span * 0.35));

mesh.addVertex(base + location + param);

mesh.addVertex(base + location - param);

frame.addVertex(base + location + param);

frame.addVertex(base + location - param);

if (i > 0) {

mesh.addIndex(i * 2); mesh.addIndex(i * 2 - 1); mesh.addIndex(i * 2 - 2);

mesh.addIndex(i * 2); mesh.addIndex(i * 2 + 1); mesh.addIndex(i * 2 - 1);

frame.addIndex(i * 2); frame.addIndex(i * 2 - 2);

frame.addIndex(i * 2 + 1); frame.addIndex(i * 2 - 1);

}

frame.addIndex(0); frame.addIndex(1);

frame.addIndex(frame.getNumVertices() - 1); frame.addIndex(frame.getNumVertices() - 2);

this->mesh_list.push_back(mesh);

this->frame_list.push_back(frame);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.25);

ofSetColor(39, 128);

int span = 100;

for (int x = -100; x <= 100; x += span) {

for (int y = -100; y <= 100; y += span) {

for (int z = -100; z <= 100; z += span) {

ofDrawBox(glm::vec3(x, y, z), span);

}

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

ofSetColor(39);

this->mesh_list[i].draw();

ofSetColor(239);

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

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191128

2019年11月27日2020年1月10日

Belts. openFrameworks

[ NEORT ]

[ YouTube ]

[ About ]
帯の群れ。

Swarm of Belt.

[ 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;

	vector<ofMesh> mesh_list;
	vector<ofMesh> frame_list;
	vector<glm::vec3> direction_list;
	vector<glm::vec3> noise_seed_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) {};

ofEasyCam cam;

vector<ofMesh> mesh_list;

vector<ofMesh> frame_list;

vector<glm::vec3> direction_list;

vector<glm::vec3> noise_seed_list;

};

#include "ofApp.h"

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

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

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

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

	if (ofGetFrameNum() % 1 == 0 && this->frame_list.size() < 300) {

		ofMesh mesh, frame;
		frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
		int r = ofRandom(3);
		switch (r) {
		case 0:
			mesh.addVertex(glm::vec3(5, 0, 0));
			mesh.addVertex(glm::vec3(-5, 0, 0));
			frame.addVertex(glm::vec3(5, 0, 0));
			frame.addVertex(glm::vec3(-5, 0, 0));
			break;
		case 1:
			mesh.addVertex(glm::vec3(0, 5, 0));
			mesh.addVertex(glm::vec3(0, -5, 0));
			frame.addVertex(glm::vec3(0, 5, 0));
			frame.addVertex(glm::vec3(0, -5, 0));
			break;
		case 2:
			mesh.addVertex(glm::vec3(0, 0, 5));
			mesh.addVertex(glm::vec3(0, 0, -5));
			frame.addVertex(glm::vec3(0, 0, 5));
			frame.addVertex(glm::vec3(0, 0, -5));
			break;
		}

		frame.addIndex(0);
		frame.addIndex(1);

		this->mesh_list.push_back(mesh);
		this->frame_list.push_back(frame);

		auto direction = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));
		direction = glm::normalize(direction) * 5;
		this->direction_list.push_back(direction);

		auto noise_seed = glm::vec3(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)));
		this->noise_seed_list.push_back(noise_seed);
	}

	for (int i = this->mesh_list.size() - 1; i > -1; i--) {
		auto angle_x = ofMap(ofNoise(this->noise_seed_list[i].x, ofGetFrameNum() * 0.01), 0, 1, -PI, PI);
		auto angle_y = ofMap(ofNoise(this->noise_seed_list[i].y, ofGetFrameNum() * 0.01), 0, 1, -PI, PI);
		auto angle_z = ofMap(ofNoise(this->noise_seed_list[i].z, ofGetFrameNum() * 0.01), 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));

		glm::vec3 rotate_direction = glm::vec4(this->direction_list[i], 0) * rotation_z * rotation_y * rotation_x;

		auto right = this->mesh_list[i].getVertex(this->mesh_list[i].getNumVertices() - 2);
		auto left = this->mesh_list[i].getVertex(this->mesh_list[i].getNumVertices() - 1);
		
		this->mesh_list[i].addVertex(right + rotate_direction);
		this->mesh_list[i].addVertex(left + rotate_direction);

		this->frame_list[i].addVertex(right + rotate_direction);
		this->frame_list[i].addVertex(left + rotate_direction);

		if (this->mesh_list[i].getNumVertices() > 100) {

			this->mesh_list[i].removeVertex(0);
			this->mesh_list[i].removeVertex(1);
		}
		else {

			int index = this->mesh_list[i].getNumVertices() - 1;
			this->mesh_list[i].addIndex(index); this->mesh_list[i].addIndex(index - 2); this->mesh_list[i].addIndex(index - 3);
			this->mesh_list[i].addIndex(index); this->mesh_list[i].addIndex(index - 1); this->mesh_list[i].addIndex(index - 3);
		}

		if (this->frame_list[i].getNumVertices() > 100) {

			this->frame_list[i].removeVertex(0);
			this->frame_list[i].removeVertex(1);
		}
		else {

			int index = this->frame_list[i].getNumVertices() - 1;
			this->frame_list[i].addIndex(index); this->frame_list[i].addIndex(index - 2);
			this->frame_list[i].addIndex(index - 1); this->frame_list[i].addIndex(index - 3);

			if (index == 99) {

				this->frame_list[i].addIndex(98);
				this->frame_list[i].addIndex(99);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.25);

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

		ofSetColor(239);
		this->mesh_list[i].draw();
		
		ofSetColor(39);
		this->frame_list[i].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();

}

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

void ofApp::update() {

if (ofGetFrameNum() % 1 == 0 && this->frame_list.size() < 300) {

ofMesh mesh, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

int r = ofRandom(3);

switch (r) {

case 0:

mesh.addVertex(glm::vec3(5, 0, 0));

mesh.addVertex(glm::vec3(-5, 0, 0));

frame.addVertex(glm::vec3(5, 0, 0));

frame.addVertex(glm::vec3(-5, 0, 0));

break;

case 1:

mesh.addVertex(glm::vec3(0, 5, 0));

mesh.addVertex(glm::vec3(0, -5, 0));

frame.addVertex(glm::vec3(0, 5, 0));

frame.addVertex(glm::vec3(0, -5, 0));

break;

case 2:

mesh.addVertex(glm::vec3(0, 0, 5));

mesh.addVertex(glm::vec3(0, 0, -5));

frame.addVertex(glm::vec3(0, 0, 5));

frame.addVertex(glm::vec3(0, 0, -5));

break;

}

frame.addIndex(0);

frame.addIndex(1);

this->mesh_list.push_back(mesh);

this->frame_list.push_back(frame);

auto direction = glm::vec3(ofRandom(-1, 1), ofRandom(-1, 1), ofRandom(-1, 1));

direction = glm::normalize(direction) * 5;

this->direction_list.push_back(direction);

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

this->noise_seed_list.push_back(noise_seed);

}

for (int i = this->mesh_list.size() - 1; i > -1; i--) {

auto angle_x = ofMap(ofNoise(this->noise_seed_list[i].x, ofGetFrameNum() * 0.01), 0, 1, -PI, PI);

auto angle_y = ofMap(ofNoise(this->noise_seed_list[i].y, ofGetFrameNum() * 0.01), 0, 1, -PI, PI);

auto angle_z = ofMap(ofNoise(this->noise_seed_list[i].z, ofGetFrameNum() * 0.01), 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));

glm::vec3 rotate_direction = glm::vec4(this->direction_list[i], 0) * rotation_z * rotation_y * rotation_x;

auto right = this->mesh_list[i].getVertex(this->mesh_list[i].getNumVertices() - 2);

auto left = this->mesh_list[i].getVertex(this->mesh_list[i].getNumVertices() - 1);

this->mesh_list[i].addVertex(right + rotate_direction);

this->mesh_list[i].addVertex(left + rotate_direction);

this->frame_list[i].addVertex(right + rotate_direction);

this->frame_list[i].addVertex(left + rotate_direction);

if (this->mesh_list[i].getNumVertices() > 100) {

this->mesh_list[i].removeVertex(0);

this->mesh_list[i].removeVertex(1);

}

else {

int index = this->mesh_list[i].getNumVertices() - 1;

this->mesh_list[i].addIndex(index); this->mesh_list[i].addIndex(index - 2); this->mesh_list[i].addIndex(index - 3);

this->mesh_list[i].addIndex(index); this->mesh_list[i].addIndex(index - 1); this->mesh_list[i].addIndex(index - 3);

}

if (this->frame_list[i].getNumVertices() > 100) {

this->frame_list[i].removeVertex(0);

this->frame_list[i].removeVertex(1);

}

else {

int index = this->frame_list[i].getNumVertices() - 1;

this->frame_list[i].addIndex(index); this->frame_list[i].addIndex(index - 2);

this->frame_list[i].addIndex(index - 1); this->frame_list[i].addIndex(index - 3);

if (index == 99) {

this->frame_list[i].addIndex(98);

this->frame_list[i].addIndex(99);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.25);

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

ofSetColor(239);

this->mesh_list[i].draw();

ofSetColor(39);

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

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20191127

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