sphere – ページ 12 – プログラミング de 落描き

2022年8月22日2022年8月22日

Beat sphere. Draw by openFrameworks

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[ 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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2022年8月6日

Thorns from the sphere. Draw by openFrameworks

[ Video ]

[ About ]
球体から棘が生える。

[ 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) {};

	ofEasyCam cam;
	ofMesh sphere_mesh, draw_sphere_mesh;

	float noise_param;
};

#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 sphere_mesh, draw_sphere_mesh;

float noise_param;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofEnableDepthTest();

	auto ico_sphere = ofIcoSpherePrimitive(150, 4);
	this->sphere_mesh = ico_sphere.getMesh();

	this->noise_param = ofRandom(1000);
}

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

	this->noise_param += 0.005;

	this->draw_sphere_mesh = this->sphere_mesh;

	for (auto& vertex : this->draw_sphere_mesh.getVertices()) {

		auto noise_value = ofNoise(glm::vec4(vertex * 0.025, noise_param));
		auto noise_param = (noise_value < 0.7 ? 1 : ofMap(noise_value, 0.7, 1, 1, 8));
		noise_param = std::pow(1.5, noise_param);
		auto noise_radius = 150 * noise_param;

		vertex = glm::normalize(vertex) * noise_radius;
	}
}

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

	this->cam.begin();
	ofRotateX(180);
	ofRotateY(ofGetFrameNum() * 0.5);
	ofRotateX(ofGetFrameNum() * 0.5);

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

	ofSetColor(255);
	this->draw_sphere_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(150, 4);

this->sphere_mesh = ico_sphere.getMesh();

this->noise_param = ofRandom(1000);

}

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

void ofApp::update() {

this->noise_param += 0.005;

this->draw_sphere_mesh = this->sphere_mesh;

for (auto& vertex : this->draw_sphere_mesh.getVertices()) {

auto noise_value = ofNoise(glm::vec4(vertex * 0.025, noise_param));

auto noise_param = (noise_value < 0.7 ? 1 : ofMap(noise_value, 0.7, 1, 1, 8));

noise_param = std::pow(1.5, noise_param);

auto noise_radius = 150 * noise_param;

vertex = glm::normalize(vertex) * noise_radius;

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

ofRotateY(ofGetFrameNum() * 0.5);

ofRotateX(ofGetFrameNum() * 0.5);

ofSetColor(0);

this->draw_sphere_mesh.draw();

ofSetColor(255);

this->draw_sphere_mesh.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220806

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2022年7月1日

Leak line. Draw by openFrameworks

[ Video ]

[ About ]
線が漏れる。

Leak line.

[ 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, line;
};

#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, line;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableDepthTest();
	ofSetLineWidth(1.5);

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

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

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

	float phi_deg_step = 5;
	float theta_deg_step = 5;

	float radius = 250;
	float noise_threshold = 0.45;

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

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

		for (float theta_deg = 0; theta_deg <= 180; theta_deg += theta_deg_step) {

			auto noise_value = ofNoise(
				radius * cos(phi_deg * DEG_TO_RAD) * 0.01,
				radius * sin(phi_deg * DEG_TO_RAD) * 0.01,
				radius * cos(theta_deg * DEG_TO_RAD) * 0.01,
				ofGetFrameNum() * 0.025);

			if (noise_value < noise_threshold) { 
			
				this->line.addVertex(glm::vec3());
				this->line.addVertex(glm::vec3(
					600 * sin(theta_deg * DEG_TO_RAD) * cos(phi_deg * DEG_TO_RAD),
					600 * sin(theta_deg * DEG_TO_RAD) * sin(phi_deg * DEG_TO_RAD),
					600 * cos(theta_deg * DEG_TO_RAD)));
				
				this->line.addIndex(this->line.getNumVertices() - 1);
				this->line.addIndex(this->line.getNumVertices() - 2);

				this->line.addColor(ofColor(255, 0, 255));
				this->line.addColor(ofColor(0));

				continue;
			}

			auto noise_value_1 = ofNoise(
				radius * cos(phi_deg * DEG_TO_RAD) * 0.01,
				radius * sin(phi_deg * DEG_TO_RAD) * 0.01,
				radius * cos((theta_deg - theta_deg_step) * DEG_TO_RAD) * 0.01,
				ofGetFrameNum() * 0.025);
			auto noise_value_2 = ofNoise(
				radius * cos((phi_deg + phi_deg_step) * DEG_TO_RAD) * 0.01,
				radius * sin((phi_deg + phi_deg_step) * DEG_TO_RAD) * 0.01,
				radius * cos(theta_deg * DEG_TO_RAD) * 0.01,
				ofGetFrameNum() * 0.025);
			auto noise_value_3 = ofNoise(
				radius * cos((phi_deg - phi_deg_step) * DEG_TO_RAD) * 0.01,
				radius * sin((phi_deg - phi_deg_step) * DEG_TO_RAD) * 0.01,
				radius * cos(theta_deg * DEG_TO_RAD) * 0.01,
				ofGetFrameNum() * 0.025);
			auto noise_value_4 = ofNoise(
				radius * cos(phi_deg * DEG_TO_RAD) * 0.01,
				radius * sin(phi_deg * DEG_TO_RAD) * 0.01,
				radius * cos((theta_deg + theta_deg_step) * DEG_TO_RAD) * 0.01,
				ofGetFrameNum() * 0.025);

			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->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);

			if (noise_value_1 < noise_threshold) {

				this->line.addVertex(vertices[0]); this->line.addVertex(vertices[1]);
				this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				this->line.addColor(line_color); this->line.addColor(line_color);
			}

			if (noise_value_2 < noise_threshold) {

				this->line.addVertex(vertices[0]); this->line.addVertex(vertices[2]);
				this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				this->line.addColor(line_color); this->line.addColor(line_color);
			}

			if (noise_value_3 < noise_threshold) {

				this->line.addVertex(vertices[1]); this->line.addVertex(vertices[3]);
				this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				this->line.addColor(line_color); this->line.addColor(line_color);
			}

			if (noise_value_4 < noise_threshold) {

				this->line.addVertex(vertices[2]); this->line.addVertex(vertices[3]);
				this->line.addIndex(this->line.getNumVertices() - 1); this->line.addIndex(this->line.getNumVertices() - 2);
				this->line.addColor(line_color); this->line.addColor(line_color);
			}

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

				this->face.addColor(face_color);
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateX(270);
	ofRotateZ(ofGetFrameNum() * 0.3333);

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

	float phi_deg_step = 5;
	float theta_deg_step = 5;

	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);

ofEnableDepthTest();

ofSetLineWidth(1.5);

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

}

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

void ofApp::update() {

this->face.clear();

this->line.clear();

float phi_deg_step = 5;

float theta_deg_step = 5;

float radius = 250;

float noise_threshold = 0.45;

ofColor face_color = ofColor(0);;

ofColor line_color = ofColor(255);

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

for (float theta_deg = 0; theta_deg <= 180; theta_deg += theta_deg_step) {

auto noise_value = ofNoise(

radius * cos(phi_deg * DEG_TO_RAD) * 0.01,

radius * sin(phi_deg * DEG_TO_RAD) * 0.01,

radius * cos(theta_deg * DEG_TO_RAD) * 0.01,

ofGetFrameNum() * 0.025);

if (noise_value < noise_threshold) {

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

this->line.addVertex(glm::vec3(

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

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

600 * cos(theta_deg * DEG_TO_RAD)));

this->line.addIndex(this->line.getNumVertices() - 1);

this->line.addIndex(this->line.getNumVertices() - 2);

this->line.addColor(ofColor(255, 0, 255));

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

continue;

}

auto noise_value_1 = ofNoise(

radius * cos(phi_deg * DEG_TO_RAD) * 0.01,

radius * sin(phi_deg * DEG_TO_RAD) * 0.01,

radius * cos((theta_deg - theta_deg_step) * DEG_TO_RAD) * 0.01,

ofGetFrameNum() * 0.025);

auto noise_value_2 = ofNoise(

radius * cos((phi_deg + phi_deg_step) * DEG_TO_RAD) * 0.01,

radius * sin((phi_deg + phi_deg_step) * DEG_TO_RAD) * 0.01,

radius * cos(theta_deg * DEG_TO_RAD) * 0.01,

ofGetFrameNum() * 0.025);

auto noise_value_3 = ofNoise(

radius * cos((phi_deg - phi_deg_step) * DEG_TO_RAD) * 0.01,

radius * sin((phi_deg - phi_deg_step) * DEG_TO_RAD) * 0.01,

radius * cos(theta_deg * DEG_TO_RAD) * 0.01,

ofGetFrameNum() * 0.025);

auto noise_value_4 = ofNoise(

radius * cos(phi_deg * DEG_TO_RAD) * 0.01,

radius * sin(phi_deg * DEG_TO_RAD) * 0.01,

radius * cos((theta_deg + theta_deg_step) * DEG_TO_RAD) * 0.01,

ofGetFrameNum() * 0.025);

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->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);

if (noise_value_1 < noise_threshold) {

this->line.addVertex(vertices[0]); this->line.addVertex(vertices[1]);

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

this->line.addColor(line_color); this->line.addColor(line_color);

}

if (noise_value_2 < noise_threshold) {

this->line.addVertex(vertices[0]); this->line.addVertex(vertices[2]);

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

this->line.addColor(line_color); this->line.addColor(line_color);

}

if (noise_value_3 < noise_threshold) {

this->line.addVertex(vertices[1]); this->line.addVertex(vertices[3]);

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

this->line.addColor(line_color); this->line.addColor(line_color);

}

if (noise_value_4 < noise_threshold) {

this->line.addVertex(vertices[2]); this->line.addVertex(vertices[3]);

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

this->line.addColor(line_color); this->line.addColor(line_color);

}

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

this->face.addColor(face_color);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(270);

ofRotateZ(ofGetFrameNum() * 0.3333);

this->face.draw();

this->line.draw();

float phi_deg_step = 5;

float theta_deg_step = 5;

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220701

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