プログラミング de 落描き – ページ 496 – クリエイティブ・コーディングによる生成物とソース

2020年4月9日2020年4月9日

A group of bands trapped in a realm. openFrameworks

[ Video ]

[ About ]
領域に閉じ込められた帯の群れ。

A group of bands trapped in a realm.

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBullet.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) {};

	ofCamera cam;
	ofxBulletWorldRigid world;

	unique_ptr<ofxBulletCustomShape> bounds_shape;
	vector<unique_ptr<ofxBulletSphere>> sphere_list;
	vector<vector<glm::vec3>> log_list;
};

#pragma once

#include "ofMain.h"

#include "ofxBullet.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) {};

ofCamera cam;

ofxBulletWorldRigid world;

unique_ptr<ofxBulletCustomShape> bounds_shape;

vector<unique_ptr<ofxBulletSphere>> sphere_list;

vector<vector<glm::vec3>> log_list;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofEnableDepthTest();

	// Initialize ofxBulletWorld
	this->cam.setPosition(glm::vec3(0, 3.f, -5.f));
	this->cam.lookAt(glm::vec3(0, 0, 0), glm::vec3(0, -1, 0));
	this->world.setup();
	this->world.enableGrabbing();
	this->world.setCamera(&this->cam);
	this->world.setGravity(ofVec3f());

	// Create Big Box
	ofVec3f start_location;
	ofPoint dimens;
	float bounds_width = 300;
	float h_width = bounds_width * 0.5;
	float depth = 10.;
	float h_depth = depth * 0.5;
	this->bounds_shape.reset(new ofxBulletCustomShape());
	this->bounds_shape->create(world.world, ofVec3f(0, 0, 0), 10.);
	for (int i = 0; i < 6; i++) {
		if (i == 0) { // ground //
			start_location.set(0., h_width + h_depth, 0.);
			dimens.set(bounds_width, depth, bounds_width);
		}
		else if (i == 1) { // back wall //
			start_location.set(0, 0, h_width + h_depth);
			dimens.set(bounds_width, bounds_width, depth);
		}
		else if (i == 2) { // right wall //
			start_location.set(h_width + h_depth, 0, 0.);
			dimens.set(depth, bounds_width, bounds_width);
		}
		else if (i == 3) { // left wall //
			start_location.set(-h_width - h_depth, 0, 0.);
			dimens.set(depth, bounds_width, bounds_width);
		}
		else if (i == 4) { // ceiling //
			start_location.set(0, -h_width - h_depth, 0.);
			dimens.set(bounds_width, depth, bounds_width);
		}
		else if (i == 5) { // front wall //
			start_location.set(0, 0, -h_width - h_depth);
			dimens.set(bounds_width, bounds_width, depth);
		}
		btBoxShape* boxShape = ofBtGetBoxCollisionShape(dimens.x, dimens.y, dimens.z);
		this->bounds_shape->addShape(boxShape, start_location);
	}
	this->bounds_shape->add();

	// Create Spheres
	for (int i = 0; i < 255; i++) {

		unique_ptr<ofxBulletSphere> sphere(new ofxBulletSphere);
		float size = 5;
		sphere->create(this->world.world, ofVec3f(ofRandom(-100, 100), ofRandom(-100, 100), ofRandom(-100, 100)), 1, size);
		sphere->setRestitution(1.0);
		sphere->add();
		this->sphere_list.push_back(move(sphere));

		vector<glm::vec3> log;
		this->log_list.push_back(log);
	}
}

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

	ofSeedRandom(39);

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

		this->log_list[i].push_back(this->sphere_list[i]->getPosition());

		while (this->log_list[i].size() > 30) {

			this->log_list[i].erase(this->log_list[i].begin());
		}
	}

	// Big Box Moving To Center 
	if (!ofGetMousePressed()) {

		ofVec3f diff = ofVec3f(0, 0, 0) - bounds_shape->getPosition();
		diff *= 500.f;
		bounds_shape->applyCentralForce(diff);
	}

	// Compute Spheres Relation
	for (int i = 0; i < this->sphere_list.size(); i++) {

		for (int j = i + 1; j < this->sphere_list.size(); j++) {

			float distance = this->sphere_list[i]->getPosition().distance(this->sphere_list[j]->getPosition());
			if (distance < 80) {

				ofVec3f diff = this->sphere_list[i]->getPosition() - this->sphere_list[j]->getPosition();
				ofMap(distance, 0, 80, 20, -2);
				this->sphere_list[i]->applyCentralForce(diff);
				this->sphere_list[j]->applyCentralForce(-diff);
			}
		}
	}

	this->world.update();
}

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

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	// Draw Big Box
	ofNoFill();
	if (ofGetMousePressed()) {

		ofSetColor(39, 39, 239);
	}
	else {

		ofSetColor(39);
	}
	bounds_shape->transformGL();
	ofDrawBox(glm::vec3(0, 0, 0), 300);
	bounds_shape->restoreTransformGL();


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

		glm::vec3 param;
		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;
		}

		ofMesh face, frame;
		frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

		for (int k = 0; k < this->log_list[i].size(); k++) {

			auto& log = this->log_list[i][k];

			face.addVertex(log + param);
			face.addVertex(log - param);

			frame.addVertex(log + param);
			frame.addVertex(log - param);

			if (k > 0) {

				face.addIndex(k * 2); face.addIndex(k * 2 - 1); face.addIndex(k * 2 - 2);
				face.addIndex(k * 2); face.addIndex(k * 2 + 1); face.addIndex(k * 2 - 1);

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

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

		ofSetColor(39);
		face.drawFaces();

		ofSetColor(239);
		frame.drawWireframe();
	}
}

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

// Initialize ofxBulletWorld

this->cam.setPosition(glm::vec3(0, 3.f, -5.f));

this->cam.lookAt(glm::vec3(0, 0, 0), glm::vec3(0, -1, 0));

this->world.setup();

this->world.enableGrabbing();

this->world.setCamera(&this->cam);

this->world.setGravity(ofVec3f());

// Create Big Box

ofVec3f start_location;

ofPoint dimens;

float bounds_width = 300;

float h_width = bounds_width * 0.5;

float depth = 10.;

float h_depth = depth * 0.5;

this->bounds_shape.reset(new ofxBulletCustomShape());

this->bounds_shape->create(world.world, ofVec3f(0, 0, 0), 10.);

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

if (i == 0) { // ground //

start_location.set(0., h_width + h_depth, 0.);

dimens.set(bounds_width, depth, bounds_width);

}

else if (i == 1) { // back wall //

start_location.set(0, 0, h_width + h_depth);

dimens.set(bounds_width, bounds_width, depth);

}

else if (i == 2) { // right wall //

start_location.set(h_width + h_depth, 0, 0.);

dimens.set(depth, bounds_width, bounds_width);

}

else if (i == 3) { // left wall //

start_location.set(-h_width - h_depth, 0, 0.);

dimens.set(depth, bounds_width, bounds_width);

}

else if (i == 4) { // ceiling //

start_location.set(0, -h_width - h_depth, 0.);

dimens.set(bounds_width, depth, bounds_width);

}

else if (i == 5) { // front wall //

start_location.set(0, 0, -h_width - h_depth);

dimens.set(bounds_width, bounds_width, depth);

}

btBoxShape* boxShape = ofBtGetBoxCollisionShape(dimens.x, dimens.y, dimens.z);

this->bounds_shape->addShape(boxShape, start_location);

}

this->bounds_shape->add();

// Create Spheres

for (int i = 0; i < 255; i++) {

unique_ptr<ofxBulletSphere> sphere(new ofxBulletSphere);

float size = 5;

sphere->create(this->world.world, ofVec3f(ofRandom(-100, 100), ofRandom(-100, 100), ofRandom(-100, 100)), 1, size);

sphere->setRestitution(1.0);

sphere->add();

this->sphere_list.push_back(move(sphere));

vector<glm::vec3> log;

this->log_list.push_back(log);

}

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

void ofApp::update() {

ofSeedRandom(39);

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

this->log_list[i].push_back(this->sphere_list[i]->getPosition());

while (this->log_list[i].size() > 30) {

this->log_list[i].erase(this->log_list[i].begin());

}

// Big Box Moving To Center

if (!ofGetMousePressed()) {

ofVec3f diff = ofVec3f(0, 0, 0) - bounds_shape->getPosition();

diff *= 500.f;

bounds_shape->applyCentralForce(diff);

}

// Compute Spheres Relation

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

for (int j = i + 1; j < this->sphere_list.size(); j++) {

float distance = this->sphere_list[i]->getPosition().distance(this->sphere_list[j]->getPosition());

if (distance < 80) {

ofVec3f diff = this->sphere_list[i]->getPosition() - this->sphere_list[j]->getPosition();

ofMap(distance, 0, 80, 20, -2);

this->sphere_list[i]->applyCentralForce(diff);

this->sphere_list[j]->applyCentralForce(-diff);

}

this->world.update();

}

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

void ofApp::draw() {

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

// Draw Big Box

ofNoFill();

if (ofGetMousePressed()) {

ofSetColor(39, 39, 239);

}

else {

ofSetColor(39);

}

bounds_shape->transformGL();

ofDrawBox(glm::vec3(0, 0, 0), 300);

bounds_shape->restoreTransformGL();

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

glm::vec3 param;

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;

}

ofMesh face, frame;

frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (int k = 0; k < this->log_list[i].size(); k++) {

auto& log = this->log_list[i][k];

face.addVertex(log + param);

face.addVertex(log - param);

frame.addVertex(log + param);

frame.addVertex(log - param);

if (k > 0) {

face.addIndex(k * 2); face.addIndex(k * 2 - 1); face.addIndex(k * 2 - 2);

face.addIndex(k * 2); face.addIndex(k * 2 + 1); face.addIndex(k * 2 - 1);

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

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

}

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

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

ofSetColor(39);

face.drawFaces();

ofSetColor(239);

frame.drawWireframe();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200409

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2020年4月8日2020年4月8日

Squares and afterimages. openFrameworks

[ Video ]

[ About ]
正方形を回転させて、辺の残像を描きます。

Rotate the square to draw an afterimage of side.

[ 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 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 frame;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

	this->frame.clear();

	int len = 250;
	auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

	for (int i = 0; i < 10; i++) {

		auto angle_x = ofMap(ofNoise(noise_seed.x, i * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -PI, PI);
		auto angle_y = ofMap(ofNoise(noise_seed.y, i * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -PI, PI);
		auto angle_z = ofMap(ofNoise(noise_seed.z, i * 0.005 + ofGetFrameNum() * 0.005), 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));

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

		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));

		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));

		for (auto& vertex : vertices) {

			vertex = glm::vec4(vertex, 0) * rotation_z * rotation_y * rotation_x;
			this->frame.addColor(ofColor(39, ofMap(i, 0, 10, 64, 255)));
		}

		this->frame.addVertices(vertices);

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

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

		this->frame.addIndex(index + 0); this->frame.addIndex(index + 4);
		this->frame.addIndex(index + 1); this->frame.addIndex(index + 5);
		this->frame.addIndex(index + 2); this->frame.addIndex(index + 6);
		this->frame.addIndex(index + 3); this->frame.addIndex(index + 7);
	}
}

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

	this->cam.begin();

	this->frame.drawWireframe();


	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(1.5);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->frame.clear();

int len = 250;

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

for (int i = 0; i < 10; i++) {

auto angle_x = ofMap(ofNoise(noise_seed.x, i * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -PI, PI);

auto angle_y = ofMap(ofNoise(noise_seed.y, i * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -PI, PI);

auto angle_z = ofMap(ofNoise(noise_seed.z, i * 0.005 + ofGetFrameNum() * 0.005), 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));

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

vector<glm::vec3> vertices;

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));

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));

for (auto& vertex : vertices) {

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

this->frame.addColor(ofColor(39, ofMap(i, 0, 10, 64, 255)));

}

this->frame.addVertices(vertices);

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

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 + 0);

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

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

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

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

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

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

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

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

}

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

void ofApp::draw() {

this->cam.begin();

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200408

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2020年4月7日2020年4月7日

Stillness and motion. openFrameworks

[ Video ]

[ About ]
Noiseに加える引数の値をフレーム数で調整。

Adjusts the value of the argument added to Noise by the number of frames.

[ 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 mesh, frame;
	float noise_seed;
};

#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 mesh, frame;

float noise_seed;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();

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

	this->noise_seed = ofRandom(1000);
}

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

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

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

	for (int x = -200; x <= 200; x += 200) {

		for (int y = -200; y <= 200; y += 200) {

			glm::vec3 location = glm::vec3(x, y, 0);
			for (auto& triangle : triangle_list) {

				auto mesh_index = this->mesh.getNumVertices();
				auto frame_index = this->frame.getNumVertices();
				glm::vec3 avg = location + (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;
				auto noise_value = ofNoise(glm::vec4(avg * 0.015, this->noise_seed));
				auto noise_radius = 0;

				if (noise_value < 0.75) {

					noise_radius = 65;
				}
				else {

					noise_radius = ofMap(noise_value, 0.75, 1.0, 65, 120);
				}

				this->mesh.addVertex(location + glm::normalize(triangle.getVertex(0)) * noise_radius);
				this->mesh.addVertex(location + glm::normalize(triangle.getVertex(1)) * noise_radius);
				this->mesh.addVertex(location + glm::normalize(triangle.getVertex(2)) * noise_radius);

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

				avg = (this->mesh.getVertex(mesh_index + 0) + this->mesh.getVertex(mesh_index + 1) + this->mesh.getVertex(mesh_index + 2)) / 3;

				this->frame.addVertex(avg);
				this->frame.addVertex(location);

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

	if (ofGetFrameNum() % 90 < 60) {

		this->noise_seed += ofMap(ofGetFrameNum() % 90, 0, 60, 0.05, 0);
	}
}

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

	this->cam.begin();

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

	ofSetColor(39);
	this->mesh.drawWireframe();
	this->frame.drawWireframe();

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(1.5);

ofEnableDepthTest();

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

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

this->noise_seed = ofRandom(1000);

}

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

void ofApp::update() {

this->mesh.clear();

this->frame.clear();

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

for (int x = -200; x <= 200; x += 200) {

for (int y = -200; y <= 200; y += 200) {

glm::vec3 location = glm::vec3(x, y, 0);

for (auto& triangle : triangle_list) {

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

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

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

auto noise_value = ofNoise(glm::vec4(avg * 0.015, this->noise_seed));

auto noise_radius = 0;

if (noise_value < 0.75) {

noise_radius = 65;

}

else {

noise_radius = ofMap(noise_value, 0.75, 1.0, 65, 120);

}

this->mesh.addVertex(location + glm::normalize(triangle.getVertex(0)) * noise_radius);

this->mesh.addVertex(location + glm::normalize(triangle.getVertex(1)) * noise_radius);

this->mesh.addVertex(location + glm::normalize(triangle.getVertex(2)) * noise_radius);

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

avg = (this->mesh.getVertex(mesh_index + 0) + this->mesh.getVertex(mesh_index + 1) + this->mesh.getVertex(mesh_index + 2)) / 3;

this->frame.addVertex(avg);

this->frame.addVertex(location);

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

}

if (ofGetFrameNum() % 90 < 60) {

this->noise_seed += ofMap(ofGetFrameNum() % 90, 0, 60, 0.05, 0);

}

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

void ofApp::draw() {

this->cam.begin();

ofSetColor(239);

this->mesh.draw();

ofSetColor(39);

this->mesh.drawWireframe();

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200407

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