noise – ページ 34 – プログラミング de 落描き

2023年4月4日

Waving. Draw by openFrameworks

[ Video ]

[ About ]
波なみ。

[ 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(239);
	ofSetColor(0);

	ofEnableDepthTest();
	ofSetLineWidth(1);

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

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

	ofSeedRandom(39);

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

	auto noise_param = glm::vec3(ofRandom(360), ofRandom(360), ofRandom(360));

	for (int radius = 50; radius <= 300; radius += 5) {

		auto rotation = glm::vec3(
			ofMap(ofNoise(noise_param.x, radius * 0.005 - ofGetFrameNum() * 0.03), 0, 1, -30, 30),
			ofMap(ofNoise(noise_param.y, radius * 0.005 - ofGetFrameNum() * 0.03), 0, 1, -30, 30),
			ofMap(ofNoise(noise_param.z, radius * 0.005 - ofGetFrameNum() * 0.03), 0, 1, -30, 30));
	
		auto rotation_x = glm::rotate(glm::mat4(), rotation.x * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));
		auto rotation_y = glm::rotate(glm::mat4(), rotation.y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
		auto rotation_z = glm::rotate(glm::mat4(), rotation.z * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));

		int start_index = this->line.getNumVertices();
		int index = start_index;
		for (int deg = 0; deg < 360; deg += 1) {

			auto vertex = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);

			if (radius % 100 != 0) {

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

			this->face.addVertex(vertex);
			this->line.addVertex(vertex);

			if (deg > 0) {

				this->line.addIndex(index - 1);
				this->line.addIndex(index);
			}

			index++;
		}

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

	int index_span = 1;
	for (int index = 0; index < this->face.getNumVertices() - 361; index += index_span) {

		this->face.addIndex(index); this->face.addIndex(index + 1); this->face.addIndex(index + 361);
		this->face.addIndex(index); this->face.addIndex(index + 361); this->face.addIndex(index + 360);
	}

	index_span = 30;
	for (int index = 0; index < this->line.getNumVertices() - 360; index += index_span) {

		this->line.addIndex(index);
		this->line.addIndex(index + 360);
	}
}

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

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

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

	ofSetColor(255);
	this->line.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(239);

ofSetColor(0);

ofEnableDepthTest();

ofSetLineWidth(1);

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->line.clear();

auto noise_param = glm::vec3(ofRandom(360), ofRandom(360), ofRandom(360));

for (int radius = 50; radius <= 300; radius += 5) {

auto rotation = glm::vec3(

ofMap(ofNoise(noise_param.x, radius * 0.005 - ofGetFrameNum() * 0.03), 0, 1, -30, 30),

ofMap(ofNoise(noise_param.y, radius * 0.005 - ofGetFrameNum() * 0.03), 0, 1, -30, 30),

ofMap(ofNoise(noise_param.z, radius * 0.005 - ofGetFrameNum() * 0.03), 0, 1, -30, 30));

auto rotation_x = glm::rotate(glm::mat4(), rotation.x * (float)DEG_TO_RAD, glm::vec3(1, 0, 0));

auto rotation_y = glm::rotate(glm::mat4(), rotation.y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

auto rotation_z = glm::rotate(glm::mat4(), rotation.z * (float)DEG_TO_RAD, glm::vec3(0, 0, 1));

int start_index = this->line.getNumVertices();

int index = start_index;

for (int deg = 0; deg < 360; deg += 1) {

auto vertex = glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0);

if (radius % 100 != 0) {

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

}

this->face.addVertex(vertex);

this->line.addVertex(vertex);

if (deg > 0) {

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

this->line.addIndex(index);

}

index++;

}

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

this->line.addIndex(start_index);

}

int index_span = 1;

for (int index = 0; index < this->face.getNumVertices() - 361; index += index_span) {

this->face.addIndex(index); this->face.addIndex(index + 1); this->face.addIndex(index + 361);

this->face.addIndex(index); this->face.addIndex(index + 361); this->face.addIndex(index + 360);

}

index_span = 30;

for (int index = 0; index < this->line.getNumVertices() - 360; index += index_span) {

this->line.addIndex(index);

this->line.addIndex(index + 360);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateZ(ofGetFrameNum());

ofSetColor(0);

this->face.draw();

ofSetColor(255);

this->line.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230404

2023年4月3日

Square ring. Draw by openFrameworks

[ Video ]

[ About ]
四角のリング。

[ 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 setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, float angle_x, float angle_y);

	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 setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, float angle_x, float angle_y);

ofEasyCam cam;

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

	auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));
	for (auto radius = 60; radius <= 360; radius += 15) {

		auto angle_x = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * -0.004 + radius * 0.005), 0, 1, -45, 45);
		auto angle_y = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * -0.004 + radius * 0.005), 0, 1, -45, 45);
		this->setRingToMesh(this->face, this->frame, glm::vec3(), radius, 10, 20, angle_x * DEG_TO_RAD, angle_y * DEG_TO_RAD);
	}
}

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

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

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

	ofSetColor(255);
	this->frame.drawWireframe();

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, float angle_x, float angle_y) {

	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));

	int deg_span = 90;
	for (int deg = 0; deg < 360; deg += deg_span) {

		auto face_index = face_target.getNumVertices();

		vector<glm::vec3> vertices;
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * -0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * 0.5));
		vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

		for (auto& vertex : vertices) {

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

		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 + 0); 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 + 6);
		face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

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

		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);
		face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

		auto frame_index = frame_target.getNumVertices();

		frame_target.addVertices(vertices);

		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);
		frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);
		frame_target.addIndex(frame_index + 4); frame_target.addIndex(frame_index + 5);
		frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);

		frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 3);
	}
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetLineWidth(1.5);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

auto noise_seed = glm::vec2(ofRandom(1000), ofRandom(1000));

for (auto radius = 60; radius <= 360; radius += 15) {

auto angle_x = ofMap(ofNoise(noise_seed.x, ofGetFrameNum() * -0.004 + radius * 0.005), 0, 1, -45, 45);

auto angle_y = ofMap(ofNoise(noise_seed.y, ofGetFrameNum() * -0.004 + radius * 0.005), 0, 1, -45, 45);

this->setRingToMesh(this->face, this->frame, glm::vec3(), radius, 10, 20, angle_x * DEG_TO_RAD, angle_y * DEG_TO_RAD);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

ofRotateY(ofGetFrameNum());

ofSetColor(0);

this->face.draw();

ofSetColor(255);

this->frame.drawWireframe();

this->cam.end();

}

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

void ofApp::setRingToMesh(ofMesh& face_target, ofMesh& frame_target, glm::vec3 location, float radius, float width, float height, float angle_x, float angle_y) {

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));

int deg_span = 90;

for (int deg = 0; deg < 360; deg += deg_span) {

auto face_index = face_target.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius + width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius + width * 0.5) * cos(deg * DEG_TO_RAD), (radius + width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * -0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos((deg + deg_span) * DEG_TO_RAD), (radius - width * 0.5) * sin((deg + deg_span) * DEG_TO_RAD), height * 0.5));

vertices.push_back(glm::vec3((radius - width * 0.5) * cos(deg * DEG_TO_RAD), (radius - width * 0.5) * sin(deg * DEG_TO_RAD), height * 0.5));

for (auto& vertex : vertices) {

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

}

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 + 0); 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 + 6);

face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 7);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 4); face_target.addIndex(face_index + 5);

face_target.addIndex(face_index + 0); face_target.addIndex(face_index + 5); face_target.addIndex(face_index + 1);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 7); face_target.addIndex(face_index + 6);

face_target.addIndex(face_index + 3); face_target.addIndex(face_index + 6); face_target.addIndex(face_index + 2);

auto frame_index = frame_target.getNumVertices();

frame_target.addVertices(vertices);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 1);

frame_target.addIndex(frame_index + 2); frame_target.addIndex(frame_index + 3);

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

frame_target.addIndex(frame_index + 6); frame_target.addIndex(frame_index + 7);

frame_target.addIndex(frame_index + 0); frame_target.addIndex(frame_index + 3);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20230403

2023年4月2日

Torus tunnel. Draw by openFrameworks

[ Video ]

[ About ]
トーラス・トンネル。

[ 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;
};

#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;

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofEnableDepthTest();
}

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

}

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

	this->cam.begin();
	ofRotateZ(ofGetFrameNum() * 0.5);

	int R = 235;
	int r = 60;
	int v_span = 3;
	int u_span = 10;

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

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

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

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

			auto noise_value = ofNoise(glm::vec4(this->make_point(R, 10, u, v) * 0.085, ofGetFrameNum() * 0.005));
			auto param = noise_value > 0.5 ? noise_value < 0.63 ? ofMap(noise_value, 0.5, 0.63, 1, 0) : 0 : 1;
			auto v_size = v_span * param;
			auto u_size = u_span * param;

			face.addVertex(this->make_point(R, r, u - u_size * 0.5, v - v_size * 0.5));
			face.addVertex(this->make_point(R, r, u + u_size * 0.5, v - v_size * 0.5));
			face.addVertex(this->make_point(R, r, u + u_size * 0.5, v + v_size * 0.5));
			face.addVertex(this->make_point(R, r, u - u_size * 0.5, v + v_size * 0.5));

			line.addVertex(this->make_point(R, r, u - u_size * 0.5, v - v_size * 0.5));
			line.addVertex(this->make_point(R, r, u + u_size * 0.5, v - v_size * 0.5));
			line.addVertex(this->make_point(R, r, u + u_size * 0.5, v + v_size * 0.5));
			line.addVertex(this->make_point(R, r, u - u_size * 0.5, v + v_size * 0.5));

			face.addColor(face_color);
			face.addColor(face_color);
			face.addColor(face_color);
			face.addColor(face_color);

			face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);
			face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

			line.addColor(line_color);
			line.addColor(line_color);
			line.addColor(line_color);
			line.addColor(line_color);

			auto noise_value_1 = ofNoise(glm::vec4(this->make_point(R, 10, u - u_span, v) * 0.085, ofGetFrameNum() * 0.005));
			auto noise_value_2 = ofNoise(glm::vec4(this->make_point(R, 10, u, v + v_span) * 0.085, ofGetFrameNum() * 0.005));
			auto noise_value_3 = ofNoise(glm::vec4(this->make_point(R, 10, u, v - v_span) * 0.085, ofGetFrameNum() * 0.005));
			auto noise_value_4 = ofNoise(glm::vec4(this->make_point(R, 10, u + u_span, v) * 0.085, ofGetFrameNum() * 0.005));

			auto param_1 = noise_value_1 > 0.5 ? noise_value_1 < 0.63 ? ofMap(noise_value_1, 0.5, 0.63, 1, 0) : 0 : 1;
			auto param_2 = noise_value_2 > 0.5 ? noise_value_2 < 0.63 ? ofMap(noise_value_2, 0.5, 0.63, 1, 0) : 0 : 1;
			auto param_3 = noise_value_3 > 0.5 ? noise_value_3 < 0.63 ? ofMap(noise_value_3, 0.5, 0.63, 1, 0) : 0 : 1;
			auto param_4 = noise_value_4 > 0.5 ? noise_value_4 < 0.63 ? ofMap(noise_value_3, 0.5, 0.63, 1, 0) : 0 : 1;

			if (param_1 < 1 || param < 1) {
			
				line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 4);
			}

			if (param_2 < 1 || param < 1) {

				
				line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 2);
			}

			if (param_3 < 1 || param < 1) {

				
				line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);
			}

			if (param_4 < 1 || param < 1) {
				
				line.addIndex(line.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 3);
			}
		}
	}

	face.drawFaces();
	line.drawWireframe();

	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(39);

ofEnableDepthTest();

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateZ(ofGetFrameNum() * 0.5);

int R = 235;

int r = 60;

int v_span = 3;

int u_span = 10;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

ofColor face_color = ofColor(0);

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

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

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

auto noise_value = ofNoise(glm::vec4(this->make_point(R, 10, u, v) * 0.085, ofGetFrameNum() * 0.005));

auto param = noise_value > 0.5 ? noise_value < 0.63 ? ofMap(noise_value, 0.5, 0.63, 1, 0) : 0 : 1;

auto v_size = v_span * param;

auto u_size = u_span * param;

face.addVertex(this->make_point(R, r, u - u_size * 0.5, v - v_size * 0.5));

face.addVertex(this->make_point(R, r, u + u_size * 0.5, v - v_size * 0.5));

face.addVertex(this->make_point(R, r, u + u_size * 0.5, v + v_size * 0.5));

face.addVertex(this->make_point(R, r, u - u_size * 0.5, v + v_size * 0.5));

line.addVertex(this->make_point(R, r, u - u_size * 0.5, v - v_size * 0.5));

line.addVertex(this->make_point(R, r, u + u_size * 0.5, v - v_size * 0.5));

line.addVertex(this->make_point(R, r, u + u_size * 0.5, v + v_size * 0.5));

line.addVertex(this->make_point(R, r, u - u_size * 0.5, v + v_size * 0.5));

face.addColor(face_color);

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 2); face.addIndex(face.getNumVertices() - 3);

face.addIndex(face.getNumVertices() - 1); face.addIndex(face.getNumVertices() - 3); face.addIndex(face.getNumVertices() - 4);

line.addColor(line_color);

auto noise_value_1 = ofNoise(glm::vec4(this->make_point(R, 10, u - u_span, v) * 0.085, ofGetFrameNum() * 0.005));

auto noise_value_2 = ofNoise(glm::vec4(this->make_point(R, 10, u, v + v_span) * 0.085, ofGetFrameNum() * 0.005));

auto noise_value_3 = ofNoise(glm::vec4(this->make_point(R, 10, u, v - v_span) * 0.085, ofGetFrameNum() * 0.005));

auto noise_value_4 = ofNoise(glm::vec4(this->make_point(R, 10, u + u_span, v) * 0.085, ofGetFrameNum() * 0.005));

auto param_1 = noise_value_1 > 0.5 ? noise_value_1 < 0.63 ? ofMap(noise_value_1, 0.5, 0.63, 1, 0) : 0 : 1;

auto param_2 = noise_value_2 > 0.5 ? noise_value_2 < 0.63 ? ofMap(noise_value_2, 0.5, 0.63, 1, 0) : 0 : 1;

auto param_3 = noise_value_3 > 0.5 ? noise_value_3 < 0.63 ? ofMap(noise_value_3, 0.5, 0.63, 1, 0) : 0 : 1;

auto param_4 = noise_value_4 > 0.5 ? noise_value_4 < 0.63 ? ofMap(noise_value_3, 0.5, 0.63, 1, 0) : 0 : 1;

if (param_1 < 1 || param < 1) {

line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 4);

}

if (param_2 < 1 || param < 1) {

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

}

if (param_3 < 1 || param < 1) {

line.addIndex(line.getNumVertices() - 3); line.addIndex(line.getNumVertices() - 4);

}

if (param_4 < 1 || param < 1) {

line.addIndex(line.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 3);

}

face.drawFaces();

line.drawWireframe();

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/Insta20230402

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