Torus – ページ 6 – プログラミング de 落描き

2023年2月13日

Random walk on twist torus. Draw by openFrameworks

[ Video ]

[ About ]
ねじりトーラスの上のランダムウォーク。

[ Source ]

#pragma once
#include "ofMain.h"

class Actor {
public:
	Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);
	void update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);
	glm::vec3 getLocation();
	deque<glm::vec3> getLog();
	void setColor(ofColor color);
	ofColor getColor();

private:

	int select_index;
	int next_index;

	glm::vec3 location;
	deque<glm::vec3> log;
	ofColor color;
};

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) {};

	glm::vec3 make_point(float R, float r, float u, float v);

	vector<glm::vec3> location_list;
	vector<vector<int>> next_index_list;
	vector<int> destination_list;

	vector<unique_ptr<Actor>> actor_list;

	ofEasyCam cam;
};

#pragma once

#include "ofMain.h"

class Actor {

public:

Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);

void update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list);

glm::vec3 getLocation();

deque<glm::vec3> getLog();

void setColor(ofColor color);

ofColor getColor();

private:

int select_index;

int next_index;

glm::vec3 location;

deque<glm::vec3> log;

ofColor color;

};

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) {};

glm::vec3 make_point(float R, float r, float u, float v);

vector<glm::vec3> location_list;

vector<vector<int>> next_index_list;

vector<int> destination_list;

vector<unique_ptr<Actor>> actor_list;

ofEasyCam cam;

};

#include "ofApp.h"	

//--------------------------------------------------------------
Actor::Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

	this->select_index = ofRandom(location_list.size());
	while (true) {

		auto itr = find(destination_list.begin(), destination_list.end(), this->select_index);
		if (itr == destination_list.end()) {

			destination_list.push_back(this->select_index);
			break;
		}

		this->select_index = (this->select_index + 1) % location_list.size();
	}

	this->next_index = this->select_index;
}

//--------------------------------------------------------------
void Actor::update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

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

		auto tmp_index = this->select_index;
		this->select_index = this->next_index;
		int retry = next_index_list[this->select_index].size();
		this->next_index = next_index_list[this->select_index][(int)ofRandom(next_index_list[this->select_index].size())];
		while (--retry > 0) {

			auto destination_itr = find(destination_list.begin(), destination_list.end(), this->next_index);
			if (destination_itr == destination_list.end()) {

				if (tmp_index != this->next_index) {

					destination_list.push_back(this->next_index);
					break;
				}
			}

			this->next_index = next_index_list[this->select_index][(this->next_index + 1) % next_index_list[this->select_index].size()];
		}
		if (retry <= 0) {

			destination_list.push_back(this->select_index);
			this->next_index = this->select_index;
		}
	}

	auto param = ofGetFrameNum() % frame_span;
	auto distance = location_list[this->next_index] - location_list[this->select_index];
	this->location = location_list[this->select_index] + distance / frame_span * param;

	this->log.push_front(this->location);
	while (this->log.size() > 60) { this->log.pop_back(); }
}

//--------------------------------------------------------------
glm::vec3 Actor::getLocation() {

	return this->location;
}

//--------------------------------------------------------------
deque<glm::vec3> Actor::getLog() {

	return this->log;
}

//--------------------------------------------------------------
void Actor::setColor(ofColor color) {

	this->color = color;
}

//--------------------------------------------------------------
ofColor Actor::getColor() {

	return this->color;
}

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

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

	ofBackground(0);
	ofSetColor(255);
	ofEnableDepthTest();

	int v_span = 3;
	int u_span = 15;
	int R = 330;
	int r = 60;
	for (int v = 0; v <= 360 * 6; v += v_span) {

		auto z = glm::vec3(0, 0, ofMap(v, 0, 360 * 6, -360 * 3, 360 * 3));
		for (int u = 0; u < 360; u += u_span) {

			this->location_list.push_back(this->make_point(R, r, u, v) + z);
		}
	}

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

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

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

			float distance = glm::distance(location, other);
			auto threshold = ofMap(glm::length(glm::vec3(location.x, location.y, 0)), R - r, R + r, 19, 21);
			if (distance <= threshold) {

				next_index.push_back(index);
			}
		}

		this->next_index_list.push_back(next_index);
	}

	for (int i = 0; i < 3000; i++) {

		this->actor_list.push_back(make_unique<Actor>(this->location_list, this->next_index_list, this->destination_list));
		this->actor_list.back()->setColor(ofColor(255));
	}
}

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

	int frame_span = 10;
	int prev_index_size = 0;

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

		prev_index_size = this->destination_list.size();
	}

	for (auto& actor : this->actor_list) {

		actor->update(frame_span, this->location_list, this->next_index_list, this->destination_list);
	}

	if (prev_index_size != 0) {

		this->destination_list.erase(this->destination_list.begin(), this->destination_list.begin() + prev_index_size);
	}
}

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

	this->cam.begin();
	ofRotateY(90);
	ofRotateZ(ofGetFrameNum() * 0.066666);

	for (auto& actor : this->actor_list) {

		ofSetColor(actor->getColor());

		ofFill();
		ofDrawSphere(actor->getLocation(), 2);

		ofNoFill();

		ofBeginShape();
		for (auto& l : actor->getLog()) {

			ofVertex(l);
		}
		ofEndShape();
	}

	ofMesh face;
	int v_span = 3;
	int u_span = 15;
	int R = 330;
	int r = 58;
	for (int v = 0; v <= 360 * 6; v += v_span) {

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

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

			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);

			next_u += u_span;
		}
	}

	ofSetColor(0);
	face.draw();

	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"

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

Actor::Actor(vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

this->select_index = ofRandom(location_list.size());

while (true) {

auto itr = find(destination_list.begin(), destination_list.end(), this->select_index);

if (itr == destination_list.end()) {

destination_list.push_back(this->select_index);

break;

}

this->select_index = (this->select_index + 1) % location_list.size();

}

this->next_index = this->select_index;

}

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

void Actor::update(const int& frame_span, vector<glm::vec3>& location_list, vector<vector<int>>& next_index_list, vector<int>& destination_list) {

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

auto tmp_index = this->select_index;

this->select_index = this->next_index;

int retry = next_index_list[this->select_index].size();

this->next_index = next_index_list[this->select_index][(int)ofRandom(next_index_list[this->select_index].size())];

while (--retry > 0) {

auto destination_itr = find(destination_list.begin(), destination_list.end(), this->next_index);

if (destination_itr == destination_list.end()) {

if (tmp_index != this->next_index) {

destination_list.push_back(this->next_index);

break;

}

this->next_index = next_index_list[this->select_index][(this->next_index + 1) % next_index_list[this->select_index].size()];

}

if (retry <= 0) {

destination_list.push_back(this->select_index);

this->next_index = this->select_index;

}

auto param = ofGetFrameNum() % frame_span;

auto distance = location_list[this->next_index] - location_list[this->select_index];

this->location = location_list[this->select_index] + distance / frame_span * param;

this->log.push_front(this->location);

while (this->log.size() > 60) { this->log.pop_back(); }

}

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

glm::vec3 Actor::getLocation() {

return this->location;

}

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

deque<glm::vec3> Actor::getLog() {

return this->log;

}

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

void Actor::setColor(ofColor color) {

this->color = color;

}

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

ofColor Actor::getColor() {

return this->color;

}

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetColor(255);

ofEnableDepthTest();

int v_span = 3;

int u_span = 15;

int R = 330;

int r = 60;

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

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

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

this->location_list.push_back(this->make_point(R, r, u, v) + z);

}

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

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

int index = -1;

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

index++;

if (location == other) { continue; }

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

auto threshold = ofMap(glm::length(glm::vec3(location.x, location.y, 0)), R - r, R + r, 19, 21);

if (distance <= threshold) {

next_index.push_back(index);

}

this->next_index_list.push_back(next_index);

}

for (int i = 0; i < 3000; i++) {

this->actor_list.push_back(make_unique<Actor>(this->location_list, this->next_index_list, this->destination_list));

this->actor_list.back()->setColor(ofColor(255));

}

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

void ofApp::update() {

int frame_span = 10;

int prev_index_size = 0;

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

prev_index_size = this->destination_list.size();

}

for (auto& actor : this->actor_list) {

actor->update(frame_span, this->location_list, this->next_index_list, this->destination_list);

}

if (prev_index_size != 0) {

this->destination_list.erase(this->destination_list.begin(), this->destination_list.begin() + prev_index_size);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(90);

ofRotateZ(ofGetFrameNum() * 0.066666);

for (auto& actor : this->actor_list) {

ofSetColor(actor->getColor());

ofFill();

ofDrawSphere(actor->getLocation(), 2);

ofNoFill();

ofBeginShape();

for (auto& l : actor->getLog()) {

ofVertex(l);

}

ofEndShape();

}

ofMesh face;

int v_span = 3;

int u_span = 15;

int R = 330;

int r = 58;

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

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));

auto next_u = u_span;

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

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

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

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

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

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);

next_u += u_span;

}

ofSetColor(0);

face.draw();

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/Insta20230213

2023年1月26日

Wriggle. Draw by openFrameworks

[ Video ]

[ About ]
うごめくトーラス。

[ 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(0);
	ofSetLineWidth(1);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

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

	this->cam.begin();
	ofRotateX(90);

	int v_span = 3;
	int u_span = 15;
	int R = 330;
	
	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) {

		int r = ofMap(ofNoise(v * 0.025 + ofGetFrameNum() * 0.1), 0, 1, 60, 150);
		int next_r = ofMap(ofNoise((v + v_span) * 0.025 + ofGetFrameNum() * 0.1), 0, 1, 60, 150);

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

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

			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(0);

ofSetLineWidth(1);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateX(90);

int v_span = 3;

int u_span = 15;

int R = 330;

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) {

int r = ofMap(ofNoise(v * 0.025 + ofGetFrameNum() * 0.1), 0, 1, 60, 150);

int next_r = ofMap(ofNoise((v + v_span) * 0.025 + ofGetFrameNum() * 0.1), 0, 1, 60, 150);

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, next_r * 0.98, next_u + u_span, v + v_span) + next_z);

face.addVertex(this->make_point(R, next_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, next_r, next_u + u_span, v + v_span) + next_z);

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

ofColor face_color = ofColor(0);

ofColor line_color = ofColor(255);

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/Insta20230126

2023年1月25日2025年2月14日

Camouflage torus. Draw by openFrameworks

[ Video ]

[ About ]
迷彩柄トーラス。

[ 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;
	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) {};

glm::vec3 make_point(float R, float r, float u, float v);

ofEasyCam cam;

ofMesh face, line;

};

#include "ofApp.h"

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

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

	ofBackground(0);
	ofSetLineWidth(2);
	ofEnableDepthTest();

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

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

	ofSeedRandom(39);

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

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

	float phi_deg_step = 0.2;
	float theta_deg_step = 0.2;
	float R = 240;

	vector<ofColor> color_list = { ofColor(217, 197, 137),   ofColor(128, 169, 53), ofColor(91, 20, 52) };

	for (int i = 0; i < 3; i++) {

		auto noise_seed = ofRandom(1000);
		float r = R * 0.25 + i;

		float threshold_1 = ofMap(i, 0, 3, 0.35, 0.48);
		float threshold_2 = ofMap(i, 0, 3, 0.55, 0.52);

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

			for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

				auto noise_value = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg) * 0.0085, noise_seed + ofGetFrameNum() * 0.025));
				if (noise_value <= threshold_1 || noise_value >= threshold_2) { continue; }

				auto noise_1 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg - theta_deg_step, phi_deg) * 0.0085, noise_seed + ofGetFrameNum() * 0.025));
				auto noise_2 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg + phi_deg_step) * 0.0085, noise_seed + ofGetFrameNum() * 0.025));
				auto noise_3 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg - phi_deg_step) * 0.0085, noise_seed + ofGetFrameNum() * 0.025));
				auto noise_4 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg + theta_deg_step, phi_deg) * 0.0085, noise_seed + ofGetFrameNum() * 0.025));

				auto index = this->face.getNumVertices();
				vector<glm::vec3> vertices;

				vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));
				vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));
				vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));
				vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

				this->face.addVertices(vertices);

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

					this->face.addColor(color_list[i]);
				}

				this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 3);
				this->face.addIndex(index + 0); this->face.addIndex(index + 3); this->face.addIndex(index + 2);

				if (noise_1 <= threshold_1 || noise_1 >= threshold_2) {

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

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

				if (noise_2 <= threshold_1 || noise_2 >= threshold_2) {

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

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

				if (noise_3 <= threshold_1 || noise_3 >= threshold_2) {

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

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

				if (noise_4 <= threshold_1 || noise_4 >= threshold_2) {

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

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

				}
			}
		}
	}
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.333333333333333 * 6);

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

	this->face.draw();

	this->cam.end();

	ostringstream os;
	os << setw(4) << setfill('0') << ofGetFrameNum() + 1;
	ofImage image;
	image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
	image.saveImage("image/img_" + os.str() + ".jpg");
	if (ofGetFrameNum() + 1 >= 30 * 18) {

		std::exit(1);
	}

	// > ffmpeg -i img_%04d.jpg -r 30 out.mp4
}

//--------------------------------------------------------------
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(0);

ofSetLineWidth(2);

ofEnableDepthTest();

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

}

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

void ofApp::update() {

ofSeedRandom(39);

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

this->face.clear();

this->line.clear();

float phi_deg_step = 0.2;

float theta_deg_step = 0.2;

float R = 240;

vector<ofColor> color_list = { ofColor(217, 197, 137), ofColor(128, 169, 53), ofColor(91, 20, 52) };

for (int i = 0; i < 3; i++) {

auto noise_seed = ofRandom(1000);

float r = R * 0.25 + i;

float threshold_1 = ofMap(i, 0, 3, 0.35, 0.48);

float threshold_2 = ofMap(i, 0, 3, 0.55, 0.52);

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

for (float theta_deg = 0; theta_deg < 360; theta_deg += theta_deg_step) {

auto noise_value = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg) * 0.0085, noise_seed + ofGetFrameNum() * 0.025));

if (noise_value <= threshold_1 || noise_value >= threshold_2) { continue; }

auto noise_1 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg - theta_deg_step, phi_deg) * 0.0085, noise_seed + ofGetFrameNum() * 0.025));

auto noise_2 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg + phi_deg_step) * 0.0085, noise_seed + ofGetFrameNum() * 0.025));

auto noise_3 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg - phi_deg_step) * 0.0085, noise_seed + ofGetFrameNum() * 0.025));

auto noise_4 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg + theta_deg_step, phi_deg) * 0.0085, noise_seed + ofGetFrameNum() * 0.025));

auto index = this->face.getNumVertices();

vector<glm::vec3> vertices;

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg - phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg - theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

vertices.push_back(glm::vec3(this->make_point(R, r, theta_deg + theta_deg_step * 0.5, phi_deg + phi_deg_step * 0.5)));

this->face.addVertices(vertices);

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

this->face.addColor(color_list[i]);

}

this->face.addIndex(index + 0); this->face.addIndex(index + 1); this->face.addIndex(index + 3);

this->face.addIndex(index + 0); this->face.addIndex(index + 3); this->face.addIndex(index + 2);

if (noise_1 <= threshold_1 || noise_1 >= threshold_2) {

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

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

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

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

}

if (noise_2 <= threshold_1 || noise_2 >= threshold_2) {

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

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

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

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

}

if (noise_3 <= threshold_1 || noise_3 >= threshold_2) {

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

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

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

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

}

if (noise_4 <= threshold_1 || noise_4 >= threshold_2) {

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

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

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

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

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.333333333333333 * 6);

ofSetColor(239);

this->line.draw();

this->face.draw();

this->cam.end();

ostringstream os;

os << setw(4) << setfill('0') << ofGetFrameNum() + 1;

ofImage image;

image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());

image.saveImage("image/img_" + os.str() + ".jpg");

if (ofGetFrameNum() + 1 >= 30 * 18) {

std::exit(1);

}

// > ffmpeg -i img_%04d.jpg -r 30 out.mp4

}

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

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/Insta20230125

2025年2月
月	火	水	木	金	土	日
					1	2
3	4	5	6	7	8	9
10	11	12	13	14	15	16
17	18	19	20	21	22	23
24	25	26	27	28