openFrameworks – ページ 352 – プログラミング de 落描き

2022年1月2日2022年1月2日

Ripple on fonts. Draw by openFrameworks

[ Video ]

[ About ]
文字で波紋。

Ripples with Characters.

[ 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) {};

	int font_size;
	ofTrueTypeFont font;
	vector<string> words;

	vector<glm::vec2> location_list;
	vector<bool> param_list;
	vector<int> index_list;

	vector<pair<glm::vec2, float>> wave_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) {};

int font_size;

ofTrueTypeFont font;

vector<string> words;

vector<glm::vec2> location_list;

vector<bool> param_list;

vector<int> index_list;

vector<pair<glm::vec2, float>> wave_list;

ofEasyCam cam;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(255);

	this->font_size = 20;
	ofTrueTypeFontSettings font_settings("fonts/msgothic.ttc", this->font_size);
	this->font.load(font_settings);

	this->words = {

		"H", "A", "P", "P", "Y", 
		"N", "E", "W",
		"Y", "E", "A", "R"
	};

	for (int x = this->font_size * -15; x <= this->font_size * 15; x += this->font_size * 0.8) {

		for (int y = this->font_size * -15; y <= this->font_size * 15; y += this->font_size * 1.2) {

			this->location_list.push_back(glm::vec2(x - this->font_size * 0.2, y - this->font_size * 0.5));
			this->index_list.push_back(ofRandom(this->words.size()));
			this->param_list.push_back(true);
		}
	}


}

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

	if (ofGetFrameNum() % 15 == 0) {

		auto l = glm::vec2(ofRandom(-250, 250), ofRandom(-250, 250));
		auto f = 5;
		this->wave_list.push_back(make_pair(l, f));
	}

	for (auto& param : this->param_list) {

		param = false;
	}

	auto max_height = 150;
	for (auto& wave : this->wave_list) {

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

			auto distance = glm::distance(wave.first, this->location_list[i]);
			if (distance > wave.second - this->font_size * 1.2 && distance < wave.second + this->font_size * 1.2) {

				this->index_list[i] = (this->index_list[i] + 1) % this->words.size();
				this->param_list[i] = true;
			}
		}
		
		wave.second += 12;
	}

	for (int i = this->wave_list.size() - 1; i >= 0; i--) {

		if (this->wave_list[i].second > 650) {

			this->wave_list.erase(this->wave_list.begin() + i);
		}
	}
}

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

	this->cam.begin();

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

		if (this->param_list[i]) {

			ofSetColor(0);
		}
		else {

			ofSetColor(128);
		}

		this->font.drawString(this->words[this->index_list[i]], this->location_list[i].x, this->location_list[i].y);
	}

	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);

this->font_size = 20;

ofTrueTypeFontSettings font_settings("fonts/msgothic.ttc", this->font_size);

this->font.load(font_settings);

this->words = {

"H", "A", "P", "P", "Y",

"N", "E", "W",

"Y", "E", "A", "R"

};

for (int x = this->font_size * -15; x <= this->font_size * 15; x += this->font_size * 0.8) {

for (int y = this->font_size * -15; y <= this->font_size * 15; y += this->font_size * 1.2) {

this->location_list.push_back(glm::vec2(x - this->font_size * 0.2, y - this->font_size * 0.5));

this->index_list.push_back(ofRandom(this->words.size()));

this->param_list.push_back(true);

}

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

void ofApp::update() {

if (ofGetFrameNum() % 15 == 0) {

auto l = glm::vec2(ofRandom(-250, 250), ofRandom(-250, 250));

auto f = 5;

this->wave_list.push_back(make_pair(l, f));

}

for (auto& param : this->param_list) {

param = false;

}

auto max_height = 150;

for (auto& wave : this->wave_list) {

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

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

if (distance > wave.second - this->font_size * 1.2 && distance < wave.second + this->font_size * 1.2) {

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

this->param_list[i] = true;

}

wave.second += 12;

}

for (int i = this->wave_list.size() - 1; i >= 0; i--) {

if (this->wave_list[i].second > 650) {

this->wave_list.erase(this->wave_list.begin() + i);

}

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

void ofApp::draw() {

this->cam.begin();

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

if (this->param_list[i]) {

ofSetColor(0);

}

else {

ofSetColor(128);

}

this->font.drawString(this->words[this->index_list[i]], this->location_list[i].x, this->location_list[i].y);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220102

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年1月1日

HAPPY NEW YEAR 2022 ! Draw by openFrameworks

[ Video ]

[ About ]
2022年もよろしくお願いします。

I look forward to working with you again this year.

[ 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;

	float font_size;
	ofTrueTypeFont font;
};

#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;

float font_size;

ofTrueTypeFont font;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

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

	this->font_size = 80;
	this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true);
}

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

	ofSeedRandom(39);
}

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

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

	string word = "HAPPY NEW YEAR 2022!";
	int sample_count = 180;
	auto noise_param = ofRandom(1000);
	bool flag = true;

	for (int y = -350; y <= 350; y += 350) {

		ofPushMatrix();
		ofTranslate(0, y, 0);
		if (flag = !flag) {
			
			ofRotateY(ofGetFrameNum() * 2);
		}
		else {

			ofRotateY(360 - (ofGetFrameNum() * 2) % 360);
		}

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

			ofPath chara_path = this->font.getCharacterAsPoints(word[i], true, false);
			vector<ofPolyline> outline = chara_path.getOutline();

			ofFill();
			ofSetColor(0);
			ofBeginShape();
			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

				if (outline_index != 0) { ofNextContour(true); }

				auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
				for (auto& vertex : vertices) {

					auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);
					auto rotation_y = glm::rotate(glm::mat4(), (i * 18.f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
					location = glm::vec4(location, 0) * rotation_y;

					auto noise_value = ofNoise(noise_param, cos(i * 18.f * DEG_TO_RAD), sin(i * 18.f * DEG_TO_RAD), ofGetFrameNum() * 0.06);
					float param = noise_value;
					location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

					if (location.y > 0) {

						ofVertex(location - glm::vec3(0, 100, 0));
					}
				}
			}
			ofEndShape();

			ofNoFill();
			ofSetColor(255, 0, 0);
			ofBeginShape();
			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

				if (outline_index != 0) { ofNextContour(true); }

				auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
				for (auto& vertex : vertices) {

					auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);
					auto rotation_y = glm::rotate(glm::mat4(), (i * 18.f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
					location = glm::vec4(location, 0) * rotation_y;

					auto noise_value = ofNoise(noise_param, cos(i * 18.f * DEG_TO_RAD), sin(i * 18.f * DEG_TO_RAD), ofGetFrameNum() * 0.06);
					float param = noise_value;
					location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

					if (location.y > 0) {

						ofVertex(location - glm::vec3(0, 100, 0));
					}
				}
			}
			ofEndShape();
		}

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

			ofPath chara_path = this->font.getCharacterAsPoints(word[i], true, false);
			vector<ofPolyline> outline = chara_path.getOutline();

			ofFill();
			ofSetColor(0);
			ofBeginShape();
			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

				if (outline_index != 0) { ofNextContour(true); }

				auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
				for (auto& vertex : vertices) {

					auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);
					auto rotation_y = glm::rotate(glm::mat4(), (i * 18.f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
					location = glm::vec4(location, 0) * rotation_y;

					auto noise_value = ofNoise(noise_param, cos(i * 18.f * DEG_TO_RAD), sin(i * 18.f * DEG_TO_RAD), ofGetFrameNum() * 0.06);
					float param = noise_value;
					location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

					if (location.y < 0) {

						ofVertex(location + glm::vec3(0, 100, 0));
					}
				}
			}
			ofEndShape();

			ofNoFill();
			ofSetColor(255, 0, 0);
			ofBeginShape();
			for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

				if (outline_index != 0) { ofNextContour(true); }

				auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();
				for (auto& vertex : vertices) {

					auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);
					auto rotation_y = glm::rotate(glm::mat4(), (i * 18.f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
					location = glm::vec4(location, 0) * rotation_y;

					auto noise_value = ofNoise(noise_param, cos(i * 18.f * DEG_TO_RAD), sin(i * 18.f * DEG_TO_RAD), ofGetFrameNum() * 0.06);
					float param = noise_value;
					location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

					if (location.y < 0) {

						ofVertex(location + glm::vec3(0, 100, 0));
					}
				}
			}
			ofEndShape();
		}

		ofPopMatrix();
	}

	this->cam.end();
}

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

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

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofSetLineWidth(2);

ofEnableDepthTest();

this->font_size = 80;

this->font.loadFont("fonts/Kazesawa-Bold.ttf", this->font_size, true, true, true);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(180);

string word = "HAPPY NEW YEAR 2022!";

int sample_count = 180;

auto noise_param = ofRandom(1000);

bool flag = true;

for (int y = -350; y <= 350; y += 350) {

ofPushMatrix();

ofTranslate(0, y, 0);

if (flag = !flag) {

ofRotateY(ofGetFrameNum() * 2);

}

else {

ofRotateY(360 - (ofGetFrameNum() * 2) % 360);

}

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

ofPath chara_path = this->font.getCharacterAsPoints(word[i], true, false);

vector<ofPolyline> outline = chara_path.getOutline();

ofFill();

ofSetColor(0);

ofBeginShape();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);

auto rotation_y = glm::rotate(glm::mat4(), (i * 18.f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

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

auto noise_value = ofNoise(noise_param, cos(i * 18.f * DEG_TO_RAD), sin(i * 18.f * DEG_TO_RAD), ofGetFrameNum() * 0.06);

float param = noise_value;

location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

if (location.y > 0) {

ofVertex(location - glm::vec3(0, 100, 0));

}

ofEndShape();

ofNoFill();

ofSetColor(255, 0, 0);

ofBeginShape();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);

auto rotation_y = glm::rotate(glm::mat4(), (i * 18.f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

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

auto noise_value = ofNoise(noise_param, cos(i * 18.f * DEG_TO_RAD), sin(i * 18.f * DEG_TO_RAD), ofGetFrameNum() * 0.06);

float param = noise_value;

location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

if (location.y > 0) {

ofVertex(location - glm::vec3(0, 100, 0));

}

ofEndShape();

}

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

ofPath chara_path = this->font.getCharacterAsPoints(word[i], true, false);

vector<ofPolyline> outline = chara_path.getOutline();

ofFill();

ofSetColor(0);

ofBeginShape();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);

auto rotation_y = glm::rotate(glm::mat4(), (i * 18.f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

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

auto noise_value = ofNoise(noise_param, cos(i * 18.f * DEG_TO_RAD), sin(i * 18.f * DEG_TO_RAD), ofGetFrameNum() * 0.06);

float param = noise_value;

location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

if (location.y < 0) {

ofVertex(location + glm::vec3(0, 100, 0));

}

ofEndShape();

ofNoFill();

ofSetColor(255, 0, 0);

ofBeginShape();

for (int outline_index = 0; outline_index < outline.size(); outline_index++) {

if (outline_index != 0) { ofNextContour(true); }

auto vertices = outline[outline_index].getResampledByCount(sample_count).getVertices();

for (auto& vertex : vertices) {

auto location = vertex - glm::vec3(this->font_size * 0.5, this->font_size * -0.5, 320);

auto rotation_y = glm::rotate(glm::mat4(), (i * 18.f) * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));

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

auto noise_value = ofNoise(noise_param, cos(i * 18.f * DEG_TO_RAD), sin(i * 18.f * DEG_TO_RAD), ofGetFrameNum() * 0.06);

float param = noise_value;

location += glm::vec3(0, ofMap(noise_value, 0, 1, -100, 100), 0);

if (location.y < 0) {

ofVertex(location + glm::vec3(0, 100, 0));

}

ofEndShape();

}

ofPopMatrix();

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20220101

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2021年12月31日2021年12月31日

10 PRINT on Torus. Draw by openFrameworks

[ Video ]

[ About ]
2021年もお世話になりました。

Thank you for 2021.

[ 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(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(255);
	ofSetLineWidth(3);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateX(90);
	ofRotateZ(ofGetFrameNum() * 0.666666666666666);

	int v_span = 3;
	int u_span = 15;
	int R = 330;
	int r = 60;

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

	float noise_seed = ofRandom(1000);
	auto color_flag = true;
	for (int v = 0; v <= 360 * 6; v += v_span) {

		bool flag = true;
		auto z = glm::vec3(0, 0, ofMap(v, 0, 360 * 6, -360 * 3, 360 * 3));
		auto next_z = glm::vec3(0, 0, ofMap(v + v_span, 0, 360 * 6, -360 * 3, 360 * 3));
		int u_start = ofMap(ofNoise(noise_seed, z.z * 0.005, ofGetFrameNum() * 0.0015), 0, 1, -360 * 3, 360 * 3);
		u_start = z.z;
		int next_u = ofMap(ofNoise(noise_seed, next_z.z * 0.005, ofGetFrameNum() * 0.0015), 0, 1, -360 * 3, 360 * 3);
		next_u = next_z.z;
		for (int u = u_start; u < u_start + 360; u += u_span) {

			face.addVertex(this->make_point(R, r * 0.98, u, v) + z);
			face.addVertex(this->make_point(R, r * 0.98, u + u_span, v) + z);
			face.addVertex(this->make_point(R, r * 0.98, next_u + u_span, v + v_span) + next_z);
			face.addVertex(this->make_point(R, r * 0.98, next_u, v + v_span) + next_z);

			line.addVertex(this->make_point(R, r, u, v) + z);
			line.addVertex(this->make_point(R, r, u + u_span, v) + z);
			line.addVertex(this->make_point(R, r, next_u + u_span, v + v_span) + next_z);
			line.addVertex(this->make_point(R, r, next_u, v + v_span) + next_z);

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

			color_flag = !color_flag;

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

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

			if (ofRandom(1) < 0.5) {

				line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 3);
			}
			else {

				line.addIndex(line.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 4);
			}

			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());
}

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#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(255);

ofSetLineWidth(3);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(90);

ofRotateZ(ofGetFrameNum() * 0.666666666666666);

int v_span = 3;

int u_span = 15;

int R = 330;

int r = 60;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

float noise_seed = ofRandom(1000);

auto color_flag = true;

for (int v = 0; v <= 360 * 6; v += v_span) {

bool flag = true;

auto z = glm::vec3(0, 0, ofMap(v, 0, 360 * 6, -360 * 3, 360 * 3));

auto next_z = glm::vec3(0, 0, ofMap(v + v_span, 0, 360 * 6, -360 * 3, 360 * 3));

int u_start = ofMap(ofNoise(noise_seed, z.z * 0.005, ofGetFrameNum() * 0.0015), 0, 1, -360 * 3, 360 * 3);

u_start = z.z;

int next_u = ofMap(ofNoise(noise_seed, next_z.z * 0.005, ofGetFrameNum() * 0.0015), 0, 1, -360 * 3, 360 * 3);

next_u = next_z.z;

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

face.addVertex(this->make_point(R, r * 0.98, u, v) + z);

face.addVertex(this->make_point(R, r * 0.98, u + u_span, v) + z);

face.addVertex(this->make_point(R, r * 0.98, next_u + u_span, v + v_span) + next_z);

face.addVertex(this->make_point(R, r * 0.98, next_u, v + v_span) + next_z);

line.addVertex(this->make_point(R, r, u, v) + z);

line.addVertex(this->make_point(R, r, u + u_span, v) + z);

line.addVertex(this->make_point(R, r, next_u + u_span, v + v_span) + next_z);

line.addVertex(this->make_point(R, r, next_u, v + v_span) + next_z);

ofColor face_color = ofColor(255);

ofColor line_color = ofColor(0);

color_flag = !color_flag;

face.addColor(face_color);

line.addColor(line_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);

if (ofRandom(1) < 0.5) {

line.addIndex(line.getNumVertices() - 1); line.addIndex(line.getNumVertices() - 3);

}

else {

line.addIndex(line.getNumVertices() - 2); line.addIndex(line.getNumVertices() - 4);

}

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/Insta20211231

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