openFrameworks – ページ 349 – プログラミング de 落描き

2022年1月11日2022年1月11日

Rotating bowl. Draw by openFrameworks

[ Video ]

[ About ]
ボウル状の半球を追随して回転させる。

Follow and rotate the bowl-shaped hemisphere.

[ 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(255);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

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

	float phi_deg_step = 3;
	float theta_deg_step = 3;
	float noise_param = 0.35;
	float threshold = 0.55;
	ofColor color;
	auto noise_seed = glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000));

	for (float radius = 150; radius <= 250; radius += 6) {

		color.setHsb(ofMap(radius, 100, 200, 0, 255), 130, 255);

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

			for (float theta_deg = 0; theta_deg <= 60; theta_deg += theta_deg_step) {

				float angle_x = ofMap(ofNoise(noise_seed.x, radius * 0.0015 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
				auto rotation_x = glm::rotate(glm::mat4(), angle_x, glm::vec3(1, 0, 0));

				float angle_y = ofMap(ofNoise(noise_seed.y, radius * 0.0015 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
				auto rotation_y = glm::rotate(glm::mat4(), angle_y, glm::vec3(0, 1, 0));

				float angle_z = ofMap(ofNoise(noise_seed.z, radius * 0.0015 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);
				auto rotation_z = glm::rotate(glm::mat4(), angle_z, glm::vec3(0, 1, 0));

				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)));

				for (auto& vertex : vertices) {

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

				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);

				for (int k = 0; k < 4; k++) {

					this->face.addColor(ofColor(0));
				}
				
				if (theta_deg == 60) {

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

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

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

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

	this->cam.begin();

	this->frame.draw();
	this->face.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(255);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

this->face.clear();

this->frame.clear();

float phi_deg_step = 3;

float theta_deg_step = 3;

float noise_param = 0.35;

float threshold = 0.55;

ofColor color;

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

for (float radius = 150; radius <= 250; radius += 6) {

color.setHsb(ofMap(radius, 100, 200, 0, 255), 130, 255);

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

for (float theta_deg = 0; theta_deg <= 60; theta_deg += theta_deg_step) {

float angle_x = ofMap(ofNoise(noise_seed.x, radius * 0.0015 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

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

float angle_y = ofMap(ofNoise(noise_seed.y, radius * 0.0015 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

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

float angle_z = ofMap(ofNoise(noise_seed.z, radius * 0.0015 + ofGetFrameNum() * 0.01), 0, 1, PI * -2, PI * 2);

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

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)));

for (auto& vertex : vertices) {

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

}

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);

for (int k = 0; k < 4; k++) {

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

}

if (theta_deg == 60) {

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

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

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

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

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

}

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

void ofApp::draw() {

this->cam.begin();

this->frame.draw();

this->face.draw();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220111

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年1月10日

Connect and reconnect. Draw by openFrameworks

[ Video ]

[ About ]
繋げて繋ぎなおす。

Connect and reconnect.

[ 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) {};

	void draw_arc(vector<glm::vec3> vertices_1, vector<glm::vec3> vertices_2);

	vector<glm::vec3> location_list;
	vector<int> rotate_param_list;
	vector<int> deg_start_list;
	vector<int> deg_end_list;
	vector<bool> flag_list;

	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) {};

void draw_arc(vector<glm::vec3> vertices_1, vector<glm::vec3> vertices_2);

vector<glm::vec3> location_list;

vector<int> rotate_param_list;

vector<int> deg_start_list;

vector<int> deg_end_list;

vector<bool> flag_list;

ofEasyCam cam;

};

#include "ofApp.h"	

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

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

	ofBackground(0);
	ofEnableDepthTest();
	ofSetLineWidth(2.5);

	int size = 120;
	for (int x = ofGetWidth() * -0.5 + size * 0.5; x <= ofGetWidth() * 0.5 - size * 0.5; x += size) {

		for (int y = ofGetHeight() * -0.5 + size * 0.5; y <= ofGetHeight() * 0.5 - size * 0.5; y += size) {

			this->location_list.push_back(glm::vec3(x, y, 360));
		
			int rotate_param = ofRandom(4);
			this->rotate_param_list.push_back(rotate_param);

			this->deg_start_list.push_back(0);
			this->deg_end_list.push_back(90);
			this->flag_list.push_back(false);
		}
	}
}

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

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

		if (ofGetFrameNum() % 45 == 0) {

			if (ofRandom(100) < 10) { this->flag_list[i] = true; }
		}

		if (this->flag_list[i]) {

			if (this->deg_end_list[i] < 90) {

				this->deg_end_list[i] += 2;
			}
			else {

				this->deg_start_list[i] += 2;
				if (this->deg_start_list[i] >= 90) {

					this->deg_end_list[i] = 0;
					this->deg_start_list[i] = 0;
					this->rotate_param_list[i] = (this->rotate_param_list[i] + 1) % this->rotate_param_list.size();
				}
			}

			if (this->deg_start_list[i] == 0 && this->deg_end_list[i] == 90) { this->flag_list[i] = false; }
		}
	}
}

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

	this->cam.begin();

	ofRotateY(ofGetFrameNum() * 0.25);
	ofRotateX(ofGetFrameNum() * 0.5);

	int size = 120;
	int radius = size * 0.5;
	int width = 20;
	for (int i = 0; i < 6; i++) {

		if (i < 4) {
			ofRotateY(90);
		}
		else if (i < 5) {

			ofRotateX(90);
		}
		else if (i < 6) {

			ofRotateX(180);
		}

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

			ofPushMatrix();
			ofTranslate(this->location_list[i].x, this->location_list[i].y);
			ofRotate(90 * this->rotate_param_list[i]);

			vector<glm::vec3> vertices_1, vertices_2;
			for (int deg = this->deg_start_list[i]; deg <= this->deg_end_list[i]; deg += 2) {

				vertices_1.push_back(glm::vec3(size * -0.5 + (radius + width) * cos(deg * DEG_TO_RAD), size * -0.5 + (radius + width) * sin(deg * DEG_TO_RAD), 360));
				vertices_2.push_back(glm::vec3(size * -0.5 + (radius - width) * cos(deg * DEG_TO_RAD), size * -0.5 + (radius - width) * sin(deg * DEG_TO_RAD), 360));
			}

			this->draw_arc(vertices_1, vertices_2);

			vertices_1.clear();
			vertices_2.clear();
			for (int deg = 180 + this->deg_start_list[i]; deg <= 180 + this->deg_end_list[i]; deg += 2) {

				vertices_1.push_back(glm::vec3(size * 0.5 + (radius + width) * cos(deg * DEG_TO_RAD), size * 0.5 + (radius + width) * sin(deg * DEG_TO_RAD), 360));
				vertices_2.push_back(glm::vec3(size * 0.5 + (radius - width) * cos(deg * DEG_TO_RAD), size * 0.5 + (radius - width) * sin(deg * DEG_TO_RAD), 360));
			}

			this->draw_arc(vertices_1, vertices_2);

			ofPopMatrix();
		}
	}

	this->cam.end();
}

//--------------------------------------------------------------
void ofApp::draw_arc(vector<glm::vec3> vertices_1, vector<glm::vec3> vertices_2) {

	ofFill();
	ofSetColor(255);

	std::reverse(vertices_2.begin(), vertices_2.end());

	ofBeginShape();
	ofVertices(vertices_1);
	ofVertices(vertices_2);
	ofEndShape(true);

	ofNoFill();
	ofSetColor(0);

	ofBeginShape();
	ofVertices(vertices_1);
	ofEndShape(false);

	ofBeginShape();
	ofVertices(vertices_2);
	ofEndShape(false);

	ofDrawLine(vertices_1[0], vertices_2[vertices_2.size() - 1]);
	ofDrawLine(vertices_1[vertices_1.size() - 1], vertices_2[0]);
}

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

ofSetLineWidth(2.5);

int size = 120;

for (int x = ofGetWidth() * -0.5 + size * 0.5; x <= ofGetWidth() * 0.5 - size * 0.5; x += size) {

for (int y = ofGetHeight() * -0.5 + size * 0.5; y <= ofGetHeight() * 0.5 - size * 0.5; y += size) {

this->location_list.push_back(glm::vec3(x, y, 360));

int rotate_param = ofRandom(4);

this->rotate_param_list.push_back(rotate_param);

this->deg_start_list.push_back(0);

this->deg_end_list.push_back(90);

this->flag_list.push_back(false);

}

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

void ofApp::update() {

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

if (ofGetFrameNum() % 45 == 0) {

if (ofRandom(100) < 10) { this->flag_list[i] = true; }

}

if (this->flag_list[i]) {

if (this->deg_end_list[i] < 90) {

this->deg_end_list[i] += 2;

}

else {

this->deg_start_list[i] += 2;

if (this->deg_start_list[i] >= 90) {

this->deg_end_list[i] = 0;

this->deg_start_list[i] = 0;

this->rotate_param_list[i] = (this->rotate_param_list[i] + 1) % this->rotate_param_list.size();

}

if (this->deg_start_list[i] == 0 && this->deg_end_list[i] == 90) { this->flag_list[i] = false; }

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.25);

ofRotateX(ofGetFrameNum() * 0.5);

int size = 120;

int radius = size * 0.5;

int width = 20;

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

if (i < 4) {

ofRotateY(90);

}

else if (i < 5) {

ofRotateX(90);

}

else if (i < 6) {

ofRotateX(180);

}

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

ofPushMatrix();

ofTranslate(this->location_list[i].x, this->location_list[i].y);

ofRotate(90 * this->rotate_param_list[i]);

vector<glm::vec3> vertices_1, vertices_2;

for (int deg = this->deg_start_list[i]; deg <= this->deg_end_list[i]; deg += 2) {

vertices_1.push_back(glm::vec3(size * -0.5 + (radius + width) * cos(deg * DEG_TO_RAD), size * -0.5 + (radius + width) * sin(deg * DEG_TO_RAD), 360));

vertices_2.push_back(glm::vec3(size * -0.5 + (radius - width) * cos(deg * DEG_TO_RAD), size * -0.5 + (radius - width) * sin(deg * DEG_TO_RAD), 360));

}

this->draw_arc(vertices_1, vertices_2);

vertices_1.clear();

vertices_2.clear();

for (int deg = 180 + this->deg_start_list[i]; deg <= 180 + this->deg_end_list[i]; deg += 2) {

vertices_1.push_back(glm::vec3(size * 0.5 + (radius + width) * cos(deg * DEG_TO_RAD), size * 0.5 + (radius + width) * sin(deg * DEG_TO_RAD), 360));

vertices_2.push_back(glm::vec3(size * 0.5 + (radius - width) * cos(deg * DEG_TO_RAD), size * 0.5 + (radius - width) * sin(deg * DEG_TO_RAD), 360));

}

this->draw_arc(vertices_1, vertices_2);

ofPopMatrix();

}

this->cam.end();

}

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

void ofApp::draw_arc(vector<glm::vec3> vertices_1, vector<glm::vec3> vertices_2) {

ofFill();

ofSetColor(255);

std::reverse(vertices_2.begin(), vertices_2.end());

ofBeginShape();

ofVertices(vertices_1);

ofVertices(vertices_2);

ofEndShape(true);

ofNoFill();

ofSetColor(0);

ofBeginShape();

ofVertices(vertices_1);

ofEndShape(false);

ofBeginShape();

ofVertices(vertices_2);

ofEndShape(false);

ofDrawLine(vertices_1[0], vertices_2[vertices_2.size() - 1]);

ofDrawLine(vertices_1[vertices_1.size() - 1], vertices_2[0]);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220110

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年1月9日

Peek at the torsion. Draw by openFrameworks

[ Video ]

[ About ]
トーラスを重ねてトンネルに。

Overlap the torus to make a tunnel.

[ 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(255);
	ofSetColor(255);
	ofSetLineWidth(1.5);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateX(0);

	int v_span = 1;
	int u_span = 60;

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

	for (int z = -1200; z <= 0; z += 100) {

		auto R = ofMap(z, -1200, 0, 125, 200);

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

			int u_start = ofMap(ofNoise(200 * cos(v * DEG_TO_RAD) * 0.0025, 200 * sin(v * DEG_TO_RAD) * 0.0025, z * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -360, 360);
			int next_u = ofMap(ofNoise(200 * cos((v + v_span) * DEG_TO_RAD) * 0.0025, 200 * sin((v + v_span) * DEG_TO_RAD) * 0.0025, z * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -360, 360);
			for (int u = u_start; u < u_start + 360; u += u_span) {

				face.addVertex(this->make_point(R, 50, u, v) + glm::vec3(0, 0, z));
				face.addVertex(this->make_point(R, 50, u + u_span, v) + glm::vec3(0, 0, z));
				face.addVertex(this->make_point(R, 50, next_u + u_span, v + v_span) + glm::vec3(0, 0, z));
				face.addVertex(this->make_point(R, 50, next_u, v + v_span) + glm::vec3(0, 0, z));

				line.addVertex(this->make_point(R, 50, u, v) + glm::vec3(0, 0, z));
				line.addVertex(this->make_point(R, 50, u + u_span, v) + glm::vec3(0, 0, z));
				line.addVertex(this->make_point(R, 50, next_u + u_span, v + v_span) + glm::vec3(0, 0, z));
				line.addVertex(this->make_point(R, 50, next_u, v + v_span) + glm::vec3(0, 0, z));

				ofColor color = ofColor(255);
				if ((u - u_start) % (u_span * 2) || true) {

					for (int i = 1; i <= 4; i++) {

						//color.setHsb(ofMap(ofNoise(face.getVertex(face.getNumVertices() - i) * 0.003), 0, 1, 128, 255), 200, 255);
						color.setHsb(ofMap(ofNoise(200 * cos(v * DEG_TO_RAD) * 0.0025, 200 * sin(v * DEG_TO_RAD) * 0.0025, z * 0.005 + ofGetFrameNum() * 0.005), 0, 1, 128, 255), 200, 255);
						face.addColor(color);
					}
				}
				else {

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

				next_u += u_span;
			}
		}
	}

	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());
}

100

101

102

103

104

105

106

107

108

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofSetColor(255);

ofSetLineWidth(1.5);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(0);

int v_span = 1;

int u_span = 60;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

for (int z = -1200; z <= 0; z += 100) {

auto R = ofMap(z, -1200, 0, 125, 200);

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

int u_start = ofMap(ofNoise(200 * cos(v * DEG_TO_RAD) * 0.0025, 200 * sin(v * DEG_TO_RAD) * 0.0025, z * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -360, 360);

int next_u = ofMap(ofNoise(200 * cos((v + v_span) * DEG_TO_RAD) * 0.0025, 200 * sin((v + v_span) * DEG_TO_RAD) * 0.0025, z * 0.005 + ofGetFrameNum() * 0.005), 0, 1, -360, 360);

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

face.addVertex(this->make_point(R, 50, u, v) + glm::vec3(0, 0, z));

face.addVertex(this->make_point(R, 50, u + u_span, v) + glm::vec3(0, 0, z));

face.addVertex(this->make_point(R, 50, next_u + u_span, v + v_span) + glm::vec3(0, 0, z));

face.addVertex(this->make_point(R, 50, next_u, v + v_span) + glm::vec3(0, 0, z));

line.addVertex(this->make_point(R, 50, u, v) + glm::vec3(0, 0, z));

line.addVertex(this->make_point(R, 50, u + u_span, v) + glm::vec3(0, 0, z));

line.addVertex(this->make_point(R, 50, next_u + u_span, v + v_span) + glm::vec3(0, 0, z));

line.addVertex(this->make_point(R, 50, next_u, v + v_span) + glm::vec3(0, 0, z));

ofColor color = ofColor(255);

if ((u - u_start) % (u_span * 2) || true) {

for (int i = 1; i <= 4; i++) {

//color.setHsb(ofMap(ofNoise(face.getVertex(face.getNumVertices() - i) * 0.003), 0, 1, 128, 255), 200, 255);

color.setHsb(ofMap(ofNoise(200 * cos(v * DEG_TO_RAD) * 0.0025, 200 * sin(v * DEG_TO_RAD) * 0.0025, z * 0.005 + ofGetFrameNum() * 0.005), 0, 1, 128, 255), 200, 255);

face.addColor(color);

}

else {

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

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

next_u += u_span;

}

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/Insta20220109

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