noise – ページ 82 – プログラミング de 落描き

2022年8月25日

Paint the torus. Draw by openFrameworks

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[ About ]
トーラスに色を塗る。

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

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

	ofEasyCam cam;
	ofMesh face_mesh, frame_mesh;

	vector<glm::vec3> location_list;
	vector<ofColor> color_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) {};

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

ofEasyCam cam;

ofMesh face_mesh, frame_mesh;

vector<glm::vec3> location_list;

vector<ofColor> color_list;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableDepthTest();

	for (auto v = 0; v < 360; v += 5) {

		for (auto u = 0; u < 360; u += 8) {

			this->location_list.push_back(this->make_point(200, 50, u, v));
			this->color_list.push_back(ofColor(0));
		}
	}

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

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

	ofSeedRandom(39);

	this->face_mesh.clear();
	this->frame_mesh.clear();

	auto R = 200;
	auto r = 50;
	auto v_span = 5;
	auto u_span = 8;

	for (int k = 0; k < 3; k++) {

		auto location = this->make_point(200, 50, ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0065), 0, 1, -360, 360), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0065), 0, 1, -360, 360));

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

			auto distance = glm::distance(location, this->location_list[i]);

			if (distance < 50) {

				if (k == 0) {

					auto r = this->color_list[i].r + ofMap(distance, 0, 50, 0, 255);
					this->color_list[i].r = r < 255 ? r : 255;
				}
				else if(k == 1) {

					auto g = this->color_list[i].g + ofMap(distance, 0, 50, 0, 255);
					this->color_list[i].g = g < 255 ? g : 255;
				}
				else {

					auto b = this->color_list[i].b + ofMap(distance, 0, 50, 0, 255);
					this->color_list[i].b = b < 255 ? b : 255;
				}
			}
			else {

				if (k == 0) {

					auto r = this->color_list[i].r - 5;
					this->color_list[i].r = r > 0 ? r : 0;
				}
				else if (k == 1) {

					auto g = this->color_list[i].g - 5;
					this->color_list[i].g = g > 0 ? g : 0;
				}
				else {
					
					auto b = this->color_list[i].b - 5;
					this->color_list[i].b = b > 0 ? b : 0;
				}
			}
		}
	}

	int color_index = 0;
	for (auto v = 0; v < 360; v += v_span) {

		for (auto u = 0; u < 360; u += u_span) {
			
			vector<glm::vec3> vertices;
			vertices.push_back(this->make_point(R, r, u, v));
			vertices.push_back(this->make_point(R, r, u + u_span, v));
			vertices.push_back(this->make_point(R, r, u + u_span, v + v_span));
			vertices.push_back(this->make_point(R, r, u, v + v_span));

			int index = this->face_mesh.getNumVertices();
			this->face_mesh.addVertices(vertices);
			this->frame_mesh.addVertices(vertices);

			// Face Index

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

			// Frame Index

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

			this->face_mesh.addColor(this->color_list[color_index]);
			this->face_mesh.addColor(this->color_list[color_index]);
			this->face_mesh.addColor(this->color_list[color_index]);
			this->face_mesh.addColor(this->color_list[color_index]);

			color_index++;
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.6666666666666666);

	this->face_mesh.drawFaces();

	this->cam.end();
}

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

	// 数学デッサン教室 描いて楽しむ数学たち　P.31

	u *= DEG_TO_RAD;
	v *= DEG_TO_RAD;

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

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

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(0);

ofEnableDepthTest();

for (auto v = 0; v < 360; v += 5) {

for (auto u = 0; u < 360; u += 8) {

this->location_list.push_back(this->make_point(200, 50, u, v));

this->color_list.push_back(ofColor(0));

}

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face_mesh.clear();

this->frame_mesh.clear();

auto R = 200;

auto r = 50;

auto v_span = 5;

auto u_span = 8;

for (int k = 0; k < 3; k++) {

auto location = this->make_point(200, 50, ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0065), 0, 1, -360, 360), ofMap(ofNoise(ofRandom(1000), ofGetFrameNum() * 0.0065), 0, 1, -360, 360));

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

auto distance = glm::distance(location, this->location_list[i]);

if (distance < 50) {

if (k == 0) {

auto r = this->color_list[i].r + ofMap(distance, 0, 50, 0, 255);

this->color_list[i].r = r < 255 ? r : 255;

}

else if(k == 1) {

auto g = this->color_list[i].g + ofMap(distance, 0, 50, 0, 255);

this->color_list[i].g = g < 255 ? g : 255;

}

else {

auto b = this->color_list[i].b + ofMap(distance, 0, 50, 0, 255);

this->color_list[i].b = b < 255 ? b : 255;

}

else {

if (k == 0) {

auto r = this->color_list[i].r - 5;

this->color_list[i].r = r > 0 ? r : 0;

}

else if (k == 1) {

auto g = this->color_list[i].g - 5;

this->color_list[i].g = g > 0 ? g : 0;

}

else {

auto b = this->color_list[i].b - 5;

this->color_list[i].b = b > 0 ? b : 0;

}

int color_index = 0;

for (auto v = 0; v < 360; v += v_span) {

for (auto u = 0; u < 360; u += u_span) {

vector<glm::vec3> vertices;

vertices.push_back(this->make_point(R, r, u, v));

vertices.push_back(this->make_point(R, r, u + u_span, v));

vertices.push_back(this->make_point(R, r, u + u_span, v + v_span));

vertices.push_back(this->make_point(R, r, u, v + v_span));

int index = this->face_mesh.getNumVertices();

this->face_mesh.addVertices(vertices);

this->frame_mesh.addVertices(vertices);

// Face Index

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

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

// Frame Index

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

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

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

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

this->face_mesh.addColor(this->color_list[color_index]);

color_index++;

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.6666666666666666);

this->face_mesh.drawFaces();

this->cam.end();

}

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

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

// 数学デッサン教室描いて楽しむ数学たち　P.31

u *= DEG_TO_RAD;

v *= DEG_TO_RAD;

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

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

auto z = r * sin(u);

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

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220825

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2022年8月23日

Rotating Hexagon. Draw by openFrameworks

[ Video ]

[ About ]
くるくる六角形。

[ 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 mouseEntered(int x, int y) {};
	void mouseExited(int x, int y) {};
	void windowResized(int w, int h) {};
	void dragEvent(ofDragInfo dragInfo) {};
	void gotMessage(ofMessage msg) {};

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

	vector<glm::vec3> location_list;

	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 mouseEntered(int x, int y) {};

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

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

void dragEvent(ofDragInfo dragInfo) {};

void gotMessage(ofMessage msg) {};

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

vector<glm::vec3> location_list;

ofEasyCam cam;

ofMesh face, frame;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofEnableDepthTest();

	auto radius = 15;
	auto x_span = radius * sqrt(3);
	auto flg = true;
	for (float y = -360; y < 360; y += radius * 1.5) {

		for (float x = -360; x < 360; x += x_span) {

			glm::vec3 location;
			if (flg) {

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

				location = glm::vec3(x + (x_span / 2), y, 0);
			}

			this->location_list.push_back(location);
		}
		flg = !flg;
	}

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

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

	ofSeedRandom(39);

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

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

		this->setHexagonToMesh(this->face, this->frame, this->location_list[i], 15, 5);
	}

}

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

	this->cam.begin();
	//ofRotateY(ofGetFrameNum() * 0.6666666666666);

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

	this->cam.end();
}

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

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

	auto noise_param = ofNoise(glm::vec4(location * 0.004, ofGetFrameNum() * 0.005));
	glm::highp_mat4 rotation;
	if (noise_param < 0.3) {
	
		rotation = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(location * 0.003, ofGetFrameNum() * 0.005)), 0, 1, -720, 720) * (float)DEG_TO_RAD * ofMap(noise_param, 0, 0.3, 0, 1), glm::vec3(-1, 1, 0));
	}
	else if (noise_param > 0.45 && noise_param < 0.55) {

		rotation = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(location * 0.003, ofGetFrameNum() * 0.005)), 0, 1, -720, 720) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 0.55, 0, 1), glm::vec3(0, 1, 0));
	}
	else if (noise_param > 0.7) {

		rotation = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(location * 0.003, ofGetFrameNum() * 0.005)), 0, 1, -720, 720) * (float)DEG_TO_RAD * ofMap(noise_param, 0.7, 1, 0, 1), glm::vec3(1, 1, 0));
	}

	for (int deg = 90; deg < 450; deg += 60) {

		auto face_radius = radius - 0.5;
		auto face_index = face_target.getNumVertices();
		auto frame_index = frame_target.getNumVertices();

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3(0, 0, 0));
		vertices.push_back(glm::vec3(face_radius * cos(deg * DEG_TO_RAD), face_radius * sin(deg * DEG_TO_RAD), 0));
		vertices.push_back(glm::vec3(face_radius * cos((deg + 60) * DEG_TO_RAD), face_radius * sin((deg + 60) * DEG_TO_RAD), 0));
		vertices.push_back(glm::vec3(0, 0, height));
		vertices.push_back(glm::vec3(face_radius * cos((deg + 60) * DEG_TO_RAD), face_radius * sin((deg + 60) * DEG_TO_RAD), height));
		vertices.push_back(glm::vec3(face_radius * cos(deg * DEG_TO_RAD), face_radius * sin(deg * DEG_TO_RAD), height));

		for (auto& vertex : vertices) {

			vertex = glm::vec4(vertex, 0) * rotation;
			vertex += location;
		}

		face_target.addVertices(vertices);

		face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2);
		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);
		face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 4);
		face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 2);
		frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 1); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 4);

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

			face_target.addColor(face_color);
			frame_target.addColor(frame_color);
		}
	}
}

//--------------------------------------------------------------
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(255);

ofEnableDepthTest();

auto radius = 15;

auto x_span = radius * sqrt(3);

auto flg = true;

for (float y = -360; y < 360; y += radius * 1.5) {

for (float x = -360; x < 360; x += x_span) {

glm::vec3 location;

if (flg) {

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

}

else {

location = glm::vec3(x + (x_span / 2), y, 0);

}

this->location_list.push_back(location);

}

flg = !flg;

}

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

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

this->setHexagonToMesh(this->face, this->frame, this->location_list[i], 15, 5);

}

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

void ofApp::draw() {

this->cam.begin();

//ofRotateY(ofGetFrameNum() * 0.6666666666666);

this->face.draw();

this->frame.draw();

this->cam.end();

}

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

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

ofColor face_color = ofColor(0);

ofColor frame_color = ofColor(255);

auto noise_param = ofNoise(glm::vec4(location * 0.004, ofGetFrameNum() * 0.005));

glm::highp_mat4 rotation;

if (noise_param < 0.3) {

rotation = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(location * 0.003, ofGetFrameNum() * 0.005)), 0, 1, -720, 720) * (float)DEG_TO_RAD * ofMap(noise_param, 0, 0.3, 0, 1), glm::vec3(-1, 1, 0));

}

else if (noise_param > 0.45 && noise_param < 0.55) {

rotation = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(location * 0.003, ofGetFrameNum() * 0.005)), 0, 1, -720, 720) * (float)DEG_TO_RAD * ofMap(noise_param, 0.45, 0.55, 0, 1), glm::vec3(0, 1, 0));

}

else if (noise_param > 0.7) {

rotation = glm::rotate(glm::mat4(), ofMap(ofNoise(glm::vec4(location * 0.003, ofGetFrameNum() * 0.005)), 0, 1, -720, 720) * (float)DEG_TO_RAD * ofMap(noise_param, 0.7, 1, 0, 1), glm::vec3(1, 1, 0));

}

for (int deg = 90; deg < 450; deg += 60) {

auto face_radius = radius - 0.5;

auto face_index = face_target.getNumVertices();

auto frame_index = frame_target.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(0, 0, 0));

vertices.push_back(glm::vec3(face_radius * cos(deg * DEG_TO_RAD), face_radius * sin(deg * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3(face_radius * cos((deg + 60) * DEG_TO_RAD), face_radius * sin((deg + 60) * DEG_TO_RAD), 0));

vertices.push_back(glm::vec3(0, 0, height));

vertices.push_back(glm::vec3(face_radius * cos((deg + 60) * DEG_TO_RAD), face_radius * sin((deg + 60) * DEG_TO_RAD), height));

vertices.push_back(glm::vec3(face_radius * cos(deg * DEG_TO_RAD), face_radius * sin(deg * DEG_TO_RAD), height));

for (auto& vertex : vertices) {

vertex = glm::vec4(vertex, 0) * rotation;

vertex += location;

}

face_target.addVertices(vertices);

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

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

face_target.addIndex(face_index + 1); face_target.addIndex(face_index + 2); face_target.addIndex(face_index + 4);

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

frame_target.addVertices(vertices);

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

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

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

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 4);

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

face_target.addColor(face_color);

frame_target.addColor(frame_color);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220823

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2022年8月22日2022年8月22日

Beat sphere. Draw by openFrameworks

[ Video ]

[ About ]
鼓動する球体。

[ 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;
};

#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;

};

#include "ofApp.h"

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

	ofSetFrameRate(40);
	ofSetWindowTitle("openFrameworks");

	ofBackground(0);
	ofEnableDepthTest();

	this->ico_sphere = ofIcoSpherePrimitive(65, 3);
	this->frame.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
}

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

	ofSeedRandom(39);

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

	int radius_start = 65;
	int radius_len = 115;
	int radius_max = radius_start + radius_len;
	for (auto& triangle : this->ico_sphere.getMesh().getUniqueFaces()) {

		auto avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;
		auto power = ofGetFrameNum() % 120 < 10 ? 0 : ofGetFrameNum() % 120 < 60 ? ofMap(ofGetFrameNum() % 120, 10, 60, 0, 1) : ofGetFrameNum() % 120 < 70 ? 1 : ofMap(ofGetFrameNum() % 120, 70, 120, 1, 0);

		auto noise_value = ofNoise(glm::vec4(avg * 0.03, ofGetFrameNum() * 0.01));
		int radius_end =  radius_start + ofMap(noise_value, 0, 1, 0, radius_len) * power;


		
		this->frame.addVertex(glm::vec3());
		for (int radius = radius_start; radius <= radius_end; radius += 1) {

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

			auto param = ofMap(radius, radius_start, radius_max, 0, PI * 0.1);

			auto angle_x = ofMap(ofNoise(avg.x * 0.8, radius * 0.03 + ofGetFrameNum() * 0.02), 0, 1, -param, param);
			auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));
			auto angle_y = ofMap(ofNoise(avg.y * 0.8, radius * 0.03 + ofGetFrameNum() * 0.02), 0, 1, -param, param);
			auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));
			auto angle_z = ofMap(ofNoise(avg.z * 0.8, radius * 0.03 + ofGetFrameNum() * 0.02), 0, 1, -param, param);
			auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 0, 1));

			auto loc = glm::normalize(avg) * radius;

			if (radius == radius_end) {

				this->mesh.addVertex(glm::vec4(loc + triangle.getVertex(0) - avg, 0) * rotation_z * rotation_y * rotation_x);
				this->mesh.addVertex(glm::vec4(loc + triangle.getVertex(1) - avg, 0) * rotation_z * rotation_y * rotation_x);
				this->mesh.addVertex(glm::vec4(loc + triangle.getVertex(2) - avg, 0) * rotation_z * rotation_y * rotation_x);

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

			this->frame.addVertex(glm::vec4(loc, 0) * rotation_z * rotation_y * rotation_x);
			this->frame.addIndex(frame_index + 0); this->frame.addIndex(frame_index - 1);
		}
	}
}

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

	this->cam.begin();
	//ofRotateY(ofGetFrameNum() * 0.666666666666666);

	ofSetColor(255, 0, 0, 200);
	this->frame.drawWireframe();
	this->mesh.drawWireframe();

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

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(40);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofEnableDepthTest();

this->ico_sphere = ofIcoSpherePrimitive(65, 3);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->mesh.clear();

this->frame.clear();

int radius_start = 65;

int radius_len = 115;

int radius_max = radius_start + radius_len;

for (auto& triangle : this->ico_sphere.getMesh().getUniqueFaces()) {

auto avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

auto power = ofGetFrameNum() % 120 < 10 ? 0 : ofGetFrameNum() % 120 < 60 ? ofMap(ofGetFrameNum() % 120, 10, 60, 0, 1) : ofGetFrameNum() % 120 < 70 ? 1 : ofMap(ofGetFrameNum() % 120, 70, 120, 1, 0);

auto noise_value = ofNoise(glm::vec4(avg * 0.03, ofGetFrameNum() * 0.01));

int radius_end = radius_start + ofMap(noise_value, 0, 1, 0, radius_len) * power;

this->frame.addVertex(glm::vec3());

for (int radius = radius_start; radius <= radius_end; radius += 1) {

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

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

auto param = ofMap(radius, radius_start, radius_max, 0, PI * 0.1);

auto angle_x = ofMap(ofNoise(avg.x * 0.8, radius * 0.03 + ofGetFrameNum() * 0.02), 0, 1, -param, param);

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

auto angle_y = ofMap(ofNoise(avg.y * 0.8, radius * 0.03 + ofGetFrameNum() * 0.02), 0, 1, -param, param);

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

auto angle_z = ofMap(ofNoise(avg.z * 0.8, radius * 0.03 + ofGetFrameNum() * 0.02), 0, 1, -param, param);

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

auto loc = glm::normalize(avg) * radius;

if (radius == radius_end) {

this->mesh.addVertex(glm::vec4(loc + triangle.getVertex(0) - avg, 0) * rotation_z * rotation_y * rotation_x);

this->mesh.addVertex(glm::vec4(loc + triangle.getVertex(1) - avg, 0) * rotation_z * rotation_y * rotation_x);

this->mesh.addVertex(glm::vec4(loc + triangle.getVertex(2) - avg, 0) * rotation_z * rotation_y * rotation_x);

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

}

this->frame.addVertex(glm::vec4(loc, 0) * rotation_z * rotation_y * rotation_x);

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

}

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

void ofApp::draw() {

this->cam.begin();

//ofRotateY(ofGetFrameNum() * 0.666666666666666);

ofSetColor(255, 0, 0, 200);

this->frame.drawWireframe();

this->mesh.drawWireframe();

ofSetColor(0);

this->mesh.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta202220822

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