ofMesh – ページ 121 – プログラミング de 落描き

2021年5月12日2021年5月12日

88888. Draw by openFrameworks

[ Video ]

[ About ]
88888.

[ 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) {};
};

#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) {};

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

	ofNoFill();
	ofSetCircleResolution(36);
}

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

	ofSeedRandom(39);
}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	vector<ofColor> base_color_list;
	vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };
	for (auto hex : hex_list) {

		ofColor color;
		color.setHex(hex);
		base_color_list.push_back(color);
	}

	int radius = 50;
	int width = 20;

	for (int x = -radius * 5; x <= radius * 5; x += radius * 2.5) {

		for (int y = -radius * 4; y <= radius * 4; y += radius * 4) {

			auto top = glm::vec3(x + 0, y - radius + width * 0.5, 0);
			auto bottom = glm::vec3(x + 0, y + radius - width * 0.5, 0);

			ofSetColor(255, 64);
			ofDrawCircle(top, radius);
			ofDrawCircle(top, radius - width);

			ofDrawCircle(bottom, radius);
			ofDrawCircle(bottom, radius - width);

			int deg_span = 30;
			int p = ofRandom(720);
			int speed = ofRandom(6, 10);
			for (int i = 0; i < 13; i++) {

				int param = (p + ofGetFrameNum() * speed + i * deg_span) % 720;
				ofColor face_color = base_color_list[ofRandom(base_color_list.size())];

				if (param < 360) {

					int deg_start = param / deg_span * deg_span + 270;
					for (int deg = deg_start + 1; deg <= deg_start + deg_span - 1; deg += 1) {

						vector<glm::vec3> vertices;
						vertices.push_back(bottom + glm::vec3((radius - width) * cos(deg * DEG_TO_RAD), (radius - width) * sin(deg * DEG_TO_RAD), 0));
						vertices.push_back(bottom + glm::vec3((radius - width) * cos((deg + 1) * DEG_TO_RAD), (radius - width) * sin((deg + 1) * DEG_TO_RAD), 0));
						vertices.push_back(bottom + glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), 0));
						vertices.push_back(bottom + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));

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

						face.addVertices(vertices);
						line.addVertices(vertices);

						face.addIndex(0); face.addIndex(1); face.addIndex(2);
						face.addIndex(0); face.addIndex(2); face.addIndex(3);

						line.addIndex(0); line.addIndex(1);
						line.addIndex(2); line.addIndex(3);

						if (deg == deg_start + 1) {

							line.addIndex(0); line.addIndex(3);
						}
						else if (deg == deg_start + deg_span - 1) {

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

						ofSetColor(face_color, 64);
						face.draw();

						ofSetColor(face_color);
						line.drawWireframe();
					}
				}
				else {

					int deg_start = 720 - param / deg_span * deg_span + 90;
					for (int deg = deg_start - 1; deg >= deg_start - deg_span + 1; deg -= 1) {

						vector<glm::vec3> vertices;
						vertices.push_back(top + glm::vec3((radius - width) * cos(deg * DEG_TO_RAD), (radius - width) * sin(deg * DEG_TO_RAD), 0));
						vertices.push_back(top + glm::vec3((radius - width) * cos((deg - 1) * DEG_TO_RAD), (radius - width) * sin((deg - 1) * DEG_TO_RAD), 0));
						vertices.push_back(top + glm::vec3(radius * cos((deg - 1) * DEG_TO_RAD), radius * sin((deg - 1) * DEG_TO_RAD), 0));
						vertices.push_back(top + glm::vec3(radius * cos(deg * DEG_TO_RAD), radius * sin(deg * DEG_TO_RAD), 0));

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

						face.addVertices(vertices);
						line.addVertices(vertices);

						face.addIndex(0); face.addIndex(1); face.addIndex(2);
						face.addIndex(0); face.addIndex(2); face.addIndex(3);

						line.addIndex(0); line.addIndex(1);
						line.addIndex(2); line.addIndex(3);

						if (deg == deg_start - 1) {

							line.addIndex(0); line.addIndex(3);
						}
						else if (deg == deg_start - deg_span + 1) {

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

						ofSetColor(face_color, 64);
						face.draw();

						ofSetColor(face_color);
						line.drawWireframe();
					}

				}
			}
		}
	}
}

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

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofNoFill();

ofSetCircleResolution(36);

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

vector<ofColor> base_color_list;

vector<int> hex_list = { 0xf44336, 0x9C27B0, 0x3F51B5, 0x03A9F4, 0x009688, 0x8BC34A, 0xFFEB3B, 0xFF9800 };

for (auto hex : hex_list) {

ofColor color;

color.setHex(hex);

base_color_list.push_back(color);

}

int radius = 50;

int width = 20;

for (int x = -radius * 5; x <= radius * 5; x += radius * 2.5) {

for (int y = -radius * 4; y <= radius * 4; y += radius * 4) {

auto top = glm::vec3(x + 0, y - radius + width * 0.5, 0);

auto bottom = glm::vec3(x + 0, y + radius - width * 0.5, 0);

ofSetColor(255, 64);

ofDrawCircle(top, radius);

ofDrawCircle(top, radius - width);

ofDrawCircle(bottom, radius);

ofDrawCircle(bottom, radius - width);

int deg_span = 30;

int p = ofRandom(720);

int speed = ofRandom(6, 10);

for (int i = 0; i < 13; i++) {

int param = (p + ofGetFrameNum() * speed + i * deg_span) % 720;

ofColor face_color = base_color_list[ofRandom(base_color_list.size())];

if (param < 360) {

int deg_start = param / deg_span * deg_span + 270;

for (int deg = deg_start + 1; deg <= deg_start + deg_span - 1; deg += 1) {

vector<glm::vec3> vertices;

vertices.push_back(bottom + glm::vec3((radius - width) * cos(deg * DEG_TO_RAD), (radius - width) * sin(deg * DEG_TO_RAD), 0));

vertices.push_back(bottom + glm::vec3((radius - width) * cos((deg + 1) * DEG_TO_RAD), (radius - width) * sin((deg + 1) * DEG_TO_RAD), 0));

vertices.push_back(bottom + glm::vec3(radius * cos((deg + 1) * DEG_TO_RAD), radius * sin((deg + 1) * DEG_TO_RAD), 0));

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

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

face.addVertices(vertices);

line.addVertices(vertices);

face.addIndex(0); face.addIndex(1); face.addIndex(2);

face.addIndex(0); face.addIndex(2); face.addIndex(3);

line.addIndex(0); line.addIndex(1);

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

if (deg == deg_start + 1) {

line.addIndex(0); line.addIndex(3);

}

else if (deg == deg_start + deg_span - 1) {

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

}

ofSetColor(face_color, 64);

face.draw();

ofSetColor(face_color);

line.drawWireframe();

}

else {

int deg_start = 720 - param / deg_span * deg_span + 90;

for (int deg = deg_start - 1; deg >= deg_start - deg_span + 1; deg -= 1) {

vector<glm::vec3> vertices;

vertices.push_back(top + glm::vec3((radius - width) * cos(deg * DEG_TO_RAD), (radius - width) * sin(deg * DEG_TO_RAD), 0));

vertices.push_back(top + glm::vec3((radius - width) * cos((deg - 1) * DEG_TO_RAD), (radius - width) * sin((deg - 1) * DEG_TO_RAD), 0));

vertices.push_back(top + glm::vec3(radius * cos((deg - 1) * DEG_TO_RAD), radius * sin((deg - 1) * DEG_TO_RAD), 0));

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

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

face.addVertices(vertices);

line.addVertices(vertices);

face.addIndex(0); face.addIndex(1); face.addIndex(2);

face.addIndex(0); face.addIndex(2); face.addIndex(3);

line.addIndex(0); line.addIndex(1);

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

if (deg == deg_start - 1) {

line.addIndex(0); line.addIndex(3);

}

else if (deg == deg_start - deg_span + 1) {

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

}

ofSetColor(face_color, 64);

face.draw();

ofSetColor(face_color);

line.drawWireframe();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210512

2021年5月11日2021年5月11日

Random walk on sphere layer. Draw by openFrameworks

[ Video ]

[ About ]
Random walk on sphere layer.

[ 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;

	vector<ofMeshFace> triangle_list;
	vector<glm::vec3> location_list;

	vector<int> index_list;
	vector<ofColor> index_color_list;

	vector<int> param_list;
	vector<ofColor> param_color_list;

	vector<vector<int>> route_info_list;

	vector<ofColor> base_color_list;

	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;

vector<ofMeshFace> triangle_list;

vector<glm::vec3> location_list;

vector<int> index_list;

vector<ofColor> index_color_list;

vector<int> param_list;

vector<ofColor> param_color_list;

vector<vector<int>> route_info_list;

vector<ofColor> base_color_list;

ofMesh mesh, frame;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(3);
	ofEnableDepthTest();

	ofColor color;
	vector<int> hex_list = { 0x247BA0, 0x70C1B3, 0xB2DBBF, 0xF3FFBD, 0xFF1654 };
	for (auto hex : hex_list) {

		color.setHex(hex);
		this->base_color_list.push_back(color);
	}

	for (int r = 200; r <= 250; r += 10) {

		auto ico_sphere = ofIcoSpherePrimitive(r, 3);
		this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());
	}

	for (auto& triangle : this->triangle_list) {

		glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;
		this->location_list.push_back(avg);
		this->param_list.push_back(0);
		this->param_color_list.push_back(ofColor(239));
	}

	int span = 25;
	for (auto& location : this->location_list) {

		vector<int> route_info = vector<int>();
		int index = -1;
		for (auto& other : this->location_list) {

			index++;
			if (location == other) { continue; }

			float distance = glm::distance(location, other);
			if (distance <= span) {

				if (abs(glm::length(location) - glm::length(other)) <= 10) {

					route_info.push_back(index);
				}
			}
		}

		this->route_info_list.push_back(route_info);
	}

	for (int i = 0; i < 100; i++) {

		this->index_list.push_back((int)ofRandom(this->location_list.size()));
		this->index_color_list.push_back(this->base_color_list[ofRandom(this->base_color_list.size())]);
	}
}

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

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

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

		int next_index = this->route_info_list[this->index_list[i]][(int)ofRandom(this->route_info_list[this->index_list[i]].size())];
		for (int k = 0; k < this->route_info_list[this->index_list[i]].size(); k++) {

			if (this->param_list[next_index] <= 0) {

				this->param_list[next_index] = 30;
				this->param_color_list[next_index] = this->index_color_list[i];
				this->index_list[i] = next_index;
				break;
			}
		}
	}

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

		if (this->param_list[i] > 0) {

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

			this->mesh.addVertex(this->triangle_list[i].getVertex(0));
			this->mesh.addVertex(this->triangle_list[i].getVertex(1));
			this->mesh.addVertex(this->triangle_list[i].getVertex(2));

			this->frame.addVertex(this->triangle_list[i].getVertex(0));
			this->frame.addVertex(this->triangle_list[i].getVertex(1));
			this->frame.addVertex(this->triangle_list[i].getVertex(2));

			this->mesh.addColor(this->param_color_list[i]);
			this->mesh.addColor(this->param_color_list[i]);
			this->mesh.addColor(this->param_color_list[i]);

			this->frame.addColor(ofColor(39));
			this->frame.addColor(ofColor(39));
			this->frame.addColor(ofColor(39));

			this->mesh.addTriangle(index + 0, index + 1, index + 2);
			this->frame.addTriangle(index + 0, index + 1, index + 2);
		}

		if (this->param_list[i] > 0) { this->param_list[i] -= 1; }
	}

}

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

	this->cam.begin();
	ofRotateX(ofGetFrameNum() * 0.37);
	ofRotateY(ofGetFrameNum() * 0.72);

	this->mesh.drawFaces();

	this->frame.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(60);

ofSetWindowTitle("openFrameworks");

ofBackground(239);

ofSetLineWidth(3);

ofEnableDepthTest();

ofColor color;

vector<int> hex_list = { 0x247BA0, 0x70C1B3, 0xB2DBBF, 0xF3FFBD, 0xFF1654 };

for (auto hex : hex_list) {

color.setHex(hex);

this->base_color_list.push_back(color);

}

for (int r = 200; r <= 250; r += 10) {

auto ico_sphere = ofIcoSpherePrimitive(r, 3);

this->triangle_list.insert(this->triangle_list.end(), ico_sphere.getMesh().getUniqueFaces().begin(), ico_sphere.getMesh().getUniqueFaces().end());

}

for (auto& triangle : this->triangle_list) {

glm::vec3 avg = (triangle.getVertex(0) + triangle.getVertex(1) + triangle.getVertex(2)) / 3;

this->location_list.push_back(avg);

this->param_list.push_back(0);

this->param_color_list.push_back(ofColor(239));

}

int span = 25;

for (auto& location : this->location_list) {

vector<int> route_info = vector<int>();

int index = -1;

for (auto& other : this->location_list) {

index++;

if (location == other) { continue; }

float distance = glm::distance(location, other);

if (distance <= span) {

if (abs(glm::length(location) - glm::length(other)) <= 10) {

route_info.push_back(index);

}

this->route_info_list.push_back(route_info);

}

for (int i = 0; i < 100; i++) {

this->index_list.push_back((int)ofRandom(this->location_list.size()));

this->index_color_list.push_back(this->base_color_list[ofRandom(this->base_color_list.size())]);

}

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

void ofApp::update() {

this->mesh.clear();

this->frame.clear();

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

int next_index = this->route_info_list[this->index_list[i]][(int)ofRandom(this->route_info_list[this->index_list[i]].size())];

for (int k = 0; k < this->route_info_list[this->index_list[i]].size(); k++) {

if (this->param_list[next_index] <= 0) {

this->param_list[next_index] = 30;

this->param_color_list[next_index] = this->index_color_list[i];

this->index_list[i] = next_index;

break;

}

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

if (this->param_list[i] > 0) {

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

this->mesh.addVertex(this->triangle_list[i].getVertex(0));

this->mesh.addVertex(this->triangle_list[i].getVertex(1));

this->mesh.addVertex(this->triangle_list[i].getVertex(2));

this->frame.addVertex(this->triangle_list[i].getVertex(0));

this->frame.addVertex(this->triangle_list[i].getVertex(1));

this->frame.addVertex(this->triangle_list[i].getVertex(2));

this->mesh.addColor(this->param_color_list[i]);

this->frame.addColor(ofColor(39));

this->mesh.addTriangle(index + 0, index + 1, index + 2);

this->frame.addTriangle(index + 0, index + 1, index + 2);

}

if (this->param_list[i] > 0) { this->param_list[i] -= 1; }

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(ofGetFrameNum() * 0.37);

ofRotateY(ofGetFrameNum() * 0.72);

this->mesh.drawFaces();

this->frame.drawWireframe();

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210511

2021年5月10日2021年5月10日

SofTorus. Draw by openFrameworks

[ Video ]

[ About ]
Soft Torus.

[ 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(239);
	ofSetColor(39);
	ofSetLineWidth(3);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();

	for (int r = 50; r <= 50; r += 10) {

		int v_span = 1;
		int u_span = 30;

		ofMesh face, line;
		line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);
		for (int v = 0; v <= 360; v += v_span) {

			bool flag = true;
			int u_start = r + v;
			int next_u = u_start + v_span;
			for (int u = u_start; u < u_start + 360 - u_span; u += u_span) {

				if (flag) {

					vector<glm::vec3> vertices;
					vertices.push_back(this->make_point(200, r, u, v));
					vertices.push_back(this->make_point(200, r, u + u_span, v));
					vertices.push_back(this->make_point(200, r, next_u + u_span, v + v_span));
					vertices.push_back(this->make_point(200, r, next_u, v + v_span));

					for (auto& vertex : vertices) {

						auto deg_y = ofMap(ofNoise(vertex.y * 0.003 + ofGetFrameNum() * 0.008), 0, 1, -360, 360);
						auto rotation_y = glm::rotate(glm::mat4(), deg_y * (float)DEG_TO_RAD, glm::vec3(0, 1, 0));
						vertex = glm::vec4(vertex, 0) * rotation_y;
					}

					face.addVertices(vertices);
					line.addVertices(vertices);

					ofColor color;
					color.setHsb(ofMap(u, u_start, u_start + 360, 0, 255), 180, 255);

					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;
				flag = !flag;
			}
		}

		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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

ofSetLineWidth(3);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

for (int r = 50; r <= 50; r += 10) {

int v_span = 1;

int u_span = 30;

ofMesh face, line;

line.setMode(ofPrimitiveMode::OF_PRIMITIVE_LINES);

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

bool flag = true;

int u_start = r + v;

int next_u = u_start + v_span;

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

if (flag) {

vector<glm::vec3> vertices;

vertices.push_back(this->make_point(200, r, u, v));

vertices.push_back(this->make_point(200, r, u + u_span, v));

vertices.push_back(this->make_point(200, r, next_u + u_span, v + v_span));

vertices.push_back(this->make_point(200, r, next_u, v + v_span));

for (auto& vertex : vertices) {

auto deg_y = ofMap(ofNoise(vertex.y * 0.003 + ofGetFrameNum() * 0.008), 0, 1, -360, 360);

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

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

}

face.addVertices(vertices);

line.addVertices(vertices);

ofColor color;

color.setHsb(ofMap(u, u_start, u_start + 360, 0, 255), 180, 255);

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;

flag = !flag;

}

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/Insta20210510

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