sphere – ページ 21 – プログラミング de 落描き

2021年12月16日2021年12月16日

Shaving spheres. Draw by openFrameworks

[ Video ]

[ About ]
ランダムウォークで球体の面を消す。

Erase the faces of the sphere with a random walk.

[ 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(0);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

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

	float phi_deg_step = 5;
	float theta_deg_step = 5;

	vector<glm::vec3> noise_location_list;

	for (int i = 0; i < 20; i++) {

		auto noise_location = glm::vec3(
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -250, 250),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -250, 250),
			ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -250, 250));
		noise_location_list.push_back(noise_location);
	}

	for (float radius = 50; radius <= 250; radius += 15) {

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

			for (float theta_deg = 0; theta_deg <= 360; theta_deg += theta_deg_step) {

				auto location = glm::vec3(
					radius * sin(theta_deg * DEG_TO_RAD) * cos(phi_deg * DEG_TO_RAD),
					radius * sin(theta_deg * DEG_TO_RAD) * sin(phi_deg * DEG_TO_RAD),
					radius * cos(theta_deg * DEG_TO_RAD));

				bool draw_flag = true;
				for (int i = 0; i < noise_location_list.size(); i++) {

					if (glm::distance(location, noise_location_list[i]) < 100) {

						draw_flag = false;
						break;
					}
				}

				if (draw_flag) {

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

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

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

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

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

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

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

	ofSetColor(0);
	this->face.draw();

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

	this->cam.end();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetLineWidth(1.5);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

float phi_deg_step = 5;

float theta_deg_step = 5;

vector<glm::vec3> noise_location_list;

for (int i = 0; i < 20; i++) {

auto noise_location = glm::vec3(

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -250, 250),

ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.005), 0, 1, -250, 250));

noise_location_list.push_back(noise_location);

}

for (float radius = 50; radius <= 250; radius += 15) {

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

for (float theta_deg = 0; theta_deg <= 360; theta_deg += theta_deg_step) {

auto location = glm::vec3(

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

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

radius * cos(theta_deg * DEG_TO_RAD));

bool draw_flag = true;

for (int i = 0; i < noise_location_list.size(); i++) {

if (glm::distance(location, noise_location_list[i]) < 100) {

draw_flag = false;

break;

}

if (draw_flag) {

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

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(

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

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

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

vertices.push_back(glm::vec3(

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

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

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

vertices.push_back(glm::vec3(

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

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

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

vertices.push_back(glm::vec3(

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

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

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

this->face.addVertices(vertices);

this->frame.addVertices(vertices);

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

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

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

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

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(90);

ofRotateZ(ofGetFrameNum());

ofSetColor(0);

this->face.draw();

ofSetColor(239);

this->frame.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211216

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2021年12月12日

Noisy spheres. Draw by openFrameworks

[ Video ]

[ About ]
ofIcoSphereをノイズで弄る。
それを並べて見比べる。

Play with the noise ofIcoSphere.
Compare them side by 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;

	vector<ofMeshFace> triangle_list;
	vector<glm::vec3> location_list;

	vector<ofMesh> mesh_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<ofMeshFace> triangle_list;

vector<glm::vec3> location_list;

vector<ofMesh> mesh_list;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofEnableDepthTest();

	auto ico_sphere = ofIcoSpherePrimitive(250, 4);
	this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());

	for (auto& triangle : this->triangle_list) {

		glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;
		this->location_list.push_back(avg);
	}
}

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

	
	this->mesh_list.clear();

	for (int x = -450; x <= 450; x += 900) {

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

			ofMesh mesh;

			ofColor mesh_color = ofColor(255);
			ofColor frame_color = ofColor(0);

			int radius = 230;
			for (int i = 0; i < this->location_list.size(); i++) {

				glm::vec3 avg = (this->triangle_list[i].getVertex(0) + this->triangle_list[i].getVertex(1) + this->triangle_list[i].getVertex(2)) / 3;

				vector<glm::vec3> vertices;
				vertices.push_back(this->triangle_list[i].getVertex(0));
				vertices.push_back(this->triangle_list[i].getVertex(1));
				vertices.push_back(this->triangle_list[i].getVertex(2));

				for (auto& vertex : vertices) {

					auto tmp_radius = ofMap(ofNoise(glm::vec4(vertex * 0.005 + glm::vec3(x, y, 0), ofGetFrameNum() * 0.005)), 0, 1, radius - 66, radius + 65);
					vertex = glm::normalize(vertex) * tmp_radius + glm::vec3(x, y, 0);
				}

				mesh.addVertices(vertices);
				mesh.addTriangle(mesh.getNumVertices() - 1, mesh.getNumVertices() - 2, mesh.getNumVertices() - 3);
			}

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

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

	this->cam.begin();

	for (auto& mesh : this->mesh_list) {

		ofSetColor(255);
		mesh.drawFaces();

		ofSetColor(39);
		mesh.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(255);

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(250, 4);

this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());

for (auto& triangle : this->triangle_list) {

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

this->location_list.push_back(avg);

}

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

void ofApp::update() {

this->mesh_list.clear();

for (int x = -450; x <= 450; x += 900) {

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

ofMesh mesh;

ofColor mesh_color = ofColor(255);

ofColor frame_color = ofColor(0);

int radius = 230;

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

glm::vec3 avg = (this->triangle_list[i].getVertex(0) + this->triangle_list[i].getVertex(1) + this->triangle_list[i].getVertex(2)) / 3;

vector<glm::vec3> vertices;

vertices.push_back(this->triangle_list[i].getVertex(0));

vertices.push_back(this->triangle_list[i].getVertex(1));

vertices.push_back(this->triangle_list[i].getVertex(2));

for (auto& vertex : vertices) {

auto tmp_radius = ofMap(ofNoise(glm::vec4(vertex * 0.005 + glm::vec3(x, y, 0), ofGetFrameNum() * 0.005)), 0, 1, radius - 66, radius + 65);

vertex = glm::normalize(vertex) * tmp_radius + glm::vec3(x, y, 0);

}

mesh.addVertices(vertices);

mesh.addTriangle(mesh.getNumVertices() - 1, mesh.getNumVertices() - 2, mesh.getNumVertices() - 3);

}

this->mesh_list.push_back(mesh);

}

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

void ofApp::draw() {

this->cam.begin();

for (auto& mesh : this->mesh_list) {

ofSetColor(255);

mesh.drawFaces();

ofSetColor(39);

mesh.drawWireframe();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211212

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2021年11月18日2021年11月18日

visible / unvisible and rotation. Draw by openFrameworks

[ Video ]

[ About ]
ノイズで可視化・非可視化と回転量をコントロールする。

Control visualization/de-visualization and amount of rotation with noise.

[ 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<ofMeshFace> triangle_list;
	ofMesh mesh, 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;

vector<ofMeshFace> triangle_list;

ofMesh mesh, frame;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofSetLineWidth(2);
	ofEnableDepthTest();

	auto ico_sphere = ofIcoSpherePrimitive(250, 3);
	this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());
}

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

	ofSeedRandom(39);

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

	int radius = 300;

	for (int x = -radius * 2.5; x <= radius * 2.5; x += radius * 2.5) {

		for (int y = -radius * 2.5; y <= radius * 2.5; y += radius * 2.5) {

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

				glm::vec3 avg = (this->triangle_list[i].getVertex(0) + this->triangle_list[i].getVertex(1) + this->triangle_list[i].getVertex(2)) / 3;
				auto noise_value = ofNoise(x + avg.x * 0.0025 + ofGetFrameNum() * 0.003, (y + avg.y) * 0.0025, avg.z * 0.0025);

				if (noise_value < 0.45) { noise_value = 0; }
				else if (noise_value > 0.55) { noise_value = 1; }
				else { noise_value = ofMap(noise_value, 0.45, 0.55, 0, 1); }

				vector<glm::vec3> vertices;

				vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(0)) * (radius + 5) - avg);
				vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(1)) * (radius + 5) - avg);
				vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(2)) * (radius + 5) - avg);

				vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(0)) * (radius - 5) - avg);
				vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(1)) * (radius - 5) - avg);
				vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(2)) * (radius - 5) - avg);

				for (auto& vertex : vertices) {

					vertex *= noise_value;
					vertex += avg;

					auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec2(y * 0.007, (x + vertex.x) * 0.0007 + ofGetFrameNum() * 0.0035)), 0, 1, -180, 180) * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));
					vertex = glm::vec4(vertex, 0) * rotation_x + glm::vec4(x, y, 0, 0);
				}

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

				this->mesh.addColor(ofColor(255));
				this->mesh.addColor(ofColor(255));
				this->mesh.addColor(ofColor(255));

				this->mesh.addColor(ofColor(0));
				this->mesh.addColor(ofColor(0));
				this->mesh.addColor(ofColor(0));

				this->frame.addColor(ofColor(0));
				this->frame.addColor(ofColor(0));
				this->frame.addColor(ofColor(0));

				this->frame.addColor(ofColor(255));
				this->frame.addColor(ofColor(255));
				this->frame.addColor(ofColor(255));

				this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 3);
				this->mesh.addTriangle(this->mesh.getNumVertices() - 4, this->mesh.getNumVertices() - 5, this->mesh.getNumVertices() - 6);

				this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 5);
				this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 5, this->mesh.getNumVertices() - 4);

				this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 3, this->mesh.getNumVertices() - 6);
				this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 6, this->mesh.getNumVertices() - 4);

				this->mesh.addTriangle(this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 3, this->mesh.getNumVertices() - 6);
				this->mesh.addTriangle(this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 6, this->mesh.getNumVertices() - 5);

				this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 2);
				this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 3);
				this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 3);

				this->frame.addIndex(this->frame.getNumVertices() - 4); this->frame.addIndex(this->frame.getNumVertices() - 5);
				this->frame.addIndex(this->frame.getNumVertices() - 5); this->frame.addIndex(this->frame.getNumVertices() - 6);
				this->frame.addIndex(this->frame.getNumVertices() - 4); this->frame.addIndex(this->frame.getNumVertices() - 6);

				this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 4);
				this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 5);
				this->frame.addIndex(this->frame.getNumVertices() - 3); this->frame.addIndex(this->frame.getNumVertices() - 6);
			}
		}
	}
}

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

	this->cam.begin();

	this->mesh.drawFaces();
	this->frame.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(30);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

ofSetLineWidth(2);

ofEnableDepthTest();

auto ico_sphere = ofIcoSpherePrimitive(250, 3);

this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

this->frame.clear();

int radius = 300;

for (int x = -radius * 2.5; x <= radius * 2.5; x += radius * 2.5) {

for (int y = -radius * 2.5; y <= radius * 2.5; y += radius * 2.5) {

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

glm::vec3 avg = (this->triangle_list[i].getVertex(0) + this->triangle_list[i].getVertex(1) + this->triangle_list[i].getVertex(2)) / 3;

auto noise_value = ofNoise(x + avg.x * 0.0025 + ofGetFrameNum() * 0.003, (y + avg.y) * 0.0025, avg.z * 0.0025);

if (noise_value < 0.45) { noise_value = 0; }

else if (noise_value > 0.55) { noise_value = 1; }

else { noise_value = ofMap(noise_value, 0.45, 0.55, 0, 1); }

vector<glm::vec3> vertices;

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(0)) * (radius + 5) - avg);

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(1)) * (radius + 5) - avg);

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(2)) * (radius + 5) - avg);

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(0)) * (radius - 5) - avg);

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(1)) * (radius - 5) - avg);

vertices.push_back(glm::normalize(this->triangle_list[i].getVertex(2)) * (radius - 5) - avg);

for (auto& vertex : vertices) {

vertex *= noise_value;

vertex += avg;

auto rotation_x = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec2(y * 0.007, (x + vertex.x) * 0.0007 + ofGetFrameNum() * 0.0035)), 0, 1, -180, 180) * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

vertex = glm::vec4(vertex, 0) * rotation_x + glm::vec4(x, y, 0, 0);

}

this->mesh.addVertices(vertices);

this->frame.addVertices(vertices);

this->mesh.addColor(ofColor(255));

this->mesh.addColor(ofColor(0));

this->frame.addColor(ofColor(0));

this->frame.addColor(ofColor(255));

this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 3);

this->mesh.addTriangle(this->mesh.getNumVertices() - 4, this->mesh.getNumVertices() - 5, this->mesh.getNumVertices() - 6);

this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 5);

this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 5, this->mesh.getNumVertices() - 4);

this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 3, this->mesh.getNumVertices() - 6);

this->mesh.addTriangle(this->mesh.getNumVertices() - 1, this->mesh.getNumVertices() - 6, this->mesh.getNumVertices() - 4);

this->mesh.addTriangle(this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 3, this->mesh.getNumVertices() - 6);

this->mesh.addTriangle(this->mesh.getNumVertices() - 2, this->mesh.getNumVertices() - 6, this->mesh.getNumVertices() - 5);

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

this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 3);

this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 3);

this->frame.addIndex(this->frame.getNumVertices() - 4); this->frame.addIndex(this->frame.getNumVertices() - 5);

this->frame.addIndex(this->frame.getNumVertices() - 5); this->frame.addIndex(this->frame.getNumVertices() - 6);

this->frame.addIndex(this->frame.getNumVertices() - 4); this->frame.addIndex(this->frame.getNumVertices() - 6);

this->frame.addIndex(this->frame.getNumVertices() - 1); this->frame.addIndex(this->frame.getNumVertices() - 4);

this->frame.addIndex(this->frame.getNumVertices() - 2); this->frame.addIndex(this->frame.getNumVertices() - 5);

this->frame.addIndex(this->frame.getNumVertices() - 3); this->frame.addIndex(this->frame.getNumVertices() - 6);

}

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

void ofApp::draw() {

this->cam.begin();

this->mesh.drawFaces();

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20211118

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