プログラミング de 落描き – ページ 2 – クリエイティブ・コーディングによる生成物とソース

2022年12月2日

Spinning in circles. Draw by openFrameworks

[ Video ]

[ About ]
くるくる。

[ 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) {};

	vector<glm::vec3> param_list;
};

#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) {};

vector<glm::vec3> param_list;

};

#include "ofApp.h"

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

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

	ofBackground(255);
	ofSetColor(0);
	ofSetCircleResolution(60);

	for (int i = 0; i < 49; i++) {

		this->param_list.push_back(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)));
	}
}

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

}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	auto len = 25;
	auto head_size = 8;

	for (int k = 0; k < this->param_list.size(); k++) {

		ofPushMatrix();
		ofTranslate((k % 7) * 100 - 300, (k / 7) * 100 - 300);

		ofMesh mesh;
		vector<glm::vec3> right, left, frame;

		glm::vec3 last_location;
		float last_theta, last_radius;

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

			auto noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i) * 0.005), 0, 1, -360, 360);
			auto noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i) * 0.01), 0, 1, -50, 50);
			auto next_noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i + 1) * 0.005), 0, 1, -360, 360);
			auto next_noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i + 1) * 0.01), 0, 1, -50, 50);

			auto location = glm::vec3(noise_radius * cos(noise_deg * DEG_TO_RAD), noise_radius * sin(noise_deg * DEG_TO_RAD), 0);
			auto next = glm::vec3(next_noise_radius * cos(next_noise_deg * DEG_TO_RAD), next_noise_radius * sin(next_noise_deg * DEG_TO_RAD), 0);

			auto direction = next - location;
			auto theta = atan2(direction.y, direction.x);

			right.push_back(location + glm::vec3(ofMap(i, 0, len, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta + PI * 0.5), 0));
			left.push_back(location + glm::vec3(ofMap(i, 0, len, 0, head_size) * cos(theta - PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta - PI * 0.5), 0));

			last_location = location;
			last_theta = theta;
			last_radius = noise_radius;
		}

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

			mesh.addVertex(left[i]);
			mesh.addVertex(right[i]);
		}

		for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

			mesh.addIndex(i + 0); mesh.addIndex(i + 1); mesh.addIndex(i + 3);
			mesh.addIndex(i + 0); mesh.addIndex(i + 2); mesh.addIndex(i + 3);
		}

		auto tmp_head_size = ofMap(mesh.getNumVertices() - 2, 0, mesh.getNumVertices(), 0, head_size);

		mesh.addVertex(last_location);
		int index = mesh.getNumVertices();
		for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

			mesh.addVertex(last_location + glm::vec3(tmp_head_size * cos(theta), tmp_head_size * sin(theta), 0));
			frame.push_back(last_location + glm::vec3(tmp_head_size * cos(theta), tmp_head_size * sin(theta), 0));
		}

		for (int i = index; i < mesh.getNumVertices() - 1; i++) {

			mesh.addIndex(index); mesh.addIndex(i + 0); mesh.addIndex(i + 1);
		}

		if (abs(last_radius) <2) { this->param_list[k].z += 0.1; }

		int span = ofMap(ofNoise(this->param_list[k].z), 0, 1, 1, 7);
		int deg_span = 360 / span;
		for (int deg = 0; deg < 360; deg += 30) {

			ofRotate(deg_span);
			mesh.draw();
		}

		ofNoFill();
		ofDrawCircle(glm::vec3(), last_radius);
		
		ofPopMatrix();
	}
}


//--------------------------------------------------------------
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(255);

ofSetColor(0);

ofSetCircleResolution(60);

for (int i = 0; i < 49; i++) {

this->param_list.push_back(glm::vec3(ofRandom(1000), ofRandom(1000), ofRandom(1000)));

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

auto len = 25;

auto head_size = 8;

for (int k = 0; k < this->param_list.size(); k++) {

ofPushMatrix();

ofTranslate((k % 7) * 100 - 300, (k / 7) * 100 - 300);

ofMesh mesh;

vector<glm::vec3> right, left, frame;

glm::vec3 last_location;

float last_theta, last_radius;

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

auto noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i) * 0.005), 0, 1, -360, 360);

auto noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i) * 0.01), 0, 1, -50, 50);

auto next_noise_deg = ofMap(ofNoise(this->param_list[k].x, (ofGetFrameNum() + i + 1) * 0.005), 0, 1, -360, 360);

auto next_noise_radius = ofMap(ofNoise(this->param_list[k].y, (ofGetFrameNum() + i + 1) * 0.01), 0, 1, -50, 50);

auto location = glm::vec3(noise_radius * cos(noise_deg * DEG_TO_RAD), noise_radius * sin(noise_deg * DEG_TO_RAD), 0);

auto next = glm::vec3(next_noise_radius * cos(next_noise_deg * DEG_TO_RAD), next_noise_radius * sin(next_noise_deg * DEG_TO_RAD), 0);

auto direction = next - location;

auto theta = atan2(direction.y, direction.x);

right.push_back(location + glm::vec3(ofMap(i, 0, len, 0, head_size) * cos(theta + PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta + PI * 0.5), 0));

left.push_back(location + glm::vec3(ofMap(i, 0, len, 0, head_size) * cos(theta - PI * 0.5), ofMap(i, 0, 25, 0, head_size) * sin(theta - PI * 0.5), 0));

last_location = location;

last_theta = theta;

last_radius = noise_radius;

}

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

mesh.addVertex(left[i]);

mesh.addVertex(right[i]);

}

for (int i = 0; i < mesh.getNumVertices() - 2; i += 2) {

mesh.addIndex(i + 0); mesh.addIndex(i + 1); mesh.addIndex(i + 3);

mesh.addIndex(i + 0); mesh.addIndex(i + 2); mesh.addIndex(i + 3);

}

auto tmp_head_size = ofMap(mesh.getNumVertices() - 2, 0, mesh.getNumVertices(), 0, head_size);

mesh.addVertex(last_location);

int index = mesh.getNumVertices();

for (auto theta = last_theta - PI * 0.5; theta <= last_theta + PI * 0.5; theta += PI / 20) {

mesh.addVertex(last_location + glm::vec3(tmp_head_size * cos(theta), tmp_head_size * sin(theta), 0));

frame.push_back(last_location + glm::vec3(tmp_head_size * cos(theta), tmp_head_size * sin(theta), 0));

}

for (int i = index; i < mesh.getNumVertices() - 1; i++) {

mesh.addIndex(index); mesh.addIndex(i + 0); mesh.addIndex(i + 1);

}

if (abs(last_radius) <2) { this->param_list[k].z += 0.1; }

int span = ofMap(ofNoise(this->param_list[k].z), 0, 1, 1, 7);

int deg_span = 360 / span;

for (int deg = 0; deg < 360; deg += 30) {

ofRotate(deg_span);

mesh.draw();

}

ofNoFill();

ofDrawCircle(glm::vec3(), last_radius);

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221202

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年12月1日

Well behaved random walk. Draw by openFrameworks

[ Video ]

[ About ]
行儀の良いランダムウォーク。

[ 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();
	ofColor color;

private:

	int select_index;
	int next_index;

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

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) {};

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

	vector<unique_ptr<Actor>> actor_list;
};

#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();

ofColor color;

private:

int select_index;

int next_index;

glm::vec3 location;

deque<glm::vec3> log;

};

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) {};

vector<glm::vec3> location_list;

vector<vector<int>> next_index_list;

vector<int> destination_list;

vector<unique_ptr<Actor>> actor_list;

};

#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;

	this->color.setHsb(ofRandom(255), 200, 255);
}

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

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

	ofBackground(0);
	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);
	ofSetCircleResolution(60);

	auto span = 30;
	for (int x = -270; x <= 270; x += span) {

		for (int y = -270; y <= 270; y += span) {

			this->location_list.push_back(glm::vec3(x, y, 0));
		}
	}

	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);
			if (distance <= span) {

				next_index.push_back(index);
			}
		}

		this->next_index_list.push_back(next_index);
	}

	for (int i = 0; i < 300; i++) {

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

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

	int frame_span = 15;
	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() {

	ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

	ofSetColor(128);
	ofNoFill();
	ofDrawRectangle(glm::vec2(), 615, 615);

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

		ofDrawCircle(location, 2);
	}

	ofSetColor(255);
	for (auto& actor : this->actor_list) {

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

			ofDrawRectangle(l, 22, 22);

		}
	}

	ofSetColor(0);
	for (auto& actor : this->actor_list) {

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


			ofDrawRectangle(l, 18, 18);
		}
	}

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

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

			ofDrawRectangle(l, 6, 6);
		}
	}
}


//--------------------------------------------------------------
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;

this->color.setHsb(ofRandom(255), 200, 255);

}

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

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 ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openFrameworks");

ofBackground(0);

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

ofSetCircleResolution(60);

auto span = 30;

for (int x = -270; x <= 270; x += span) {

for (int y = -270; y <= 270; y += span) {

this->location_list.push_back(glm::vec3(x, y, 0));

}

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);

if (distance <= span) {

next_index.push_back(index);

}

this->next_index_list.push_back(next_index);

}

for (int i = 0; i < 300; i++) {

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

}

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

void ofApp::update() {

int frame_span = 15;

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() {

ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);

ofSetColor(128);

ofNoFill();

ofDrawRectangle(glm::vec2(), 615, 615);

ofFill();

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

ofDrawCircle(location, 2);

}

ofSetColor(255);

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

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

ofDrawRectangle(l, 22, 22);

}

ofSetColor(0);

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

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

ofDrawRectangle(l, 18, 18);

}

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

ofSetColor(actor->color);

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

ofDrawRectangle(l, 6, 6);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20221201

[ほしいものリスト]
Amazon

[ Sponsor Link ]

2022年11月30日

Crumpled torus. Draw by openFrameworks

[ Video ]

[ About ]
くしゃくしゃトーラス。

[ 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(255);
	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 = 1.5;
	float theta_deg_step = 6;

	float R = 240;
	float r = R * 0.25;

	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) * 0.035, ofGetFrameNum() * 0.025));
			if (noise_value < 0.45) { continue; }

			auto noise_1 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg - theta_deg_step, phi_deg) * 0.035, ofGetFrameNum() * 0.025));
			auto noise_2 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg + phi_deg_step) * 0.035, ofGetFrameNum() * 0.025));
			auto noise_3 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg - phi_deg_step) * 0.035, ofGetFrameNum() * 0.025));
			auto noise_4 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg + theta_deg_step, phi_deg) * 0.035, 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)));

			for (auto& vertex : vertices) {

				auto rotation = glm::vec3(
					ofMap(ofNoise(glm::vec4(vertex * 0.00085, seed.x + ofGetFrameNum() * 0.01)), 0, 1, -90, 90),
					ofMap(ofNoise(glm::vec4(vertex * 0.00085, seed.y + ofGetFrameNum() * 0.01)), 0, 1, -90, 90),
					ofMap(ofNoise(glm::vec4(vertex * 0.00085, seed.z + ofGetFrameNum() * 0.01)), 0, 1, -90, 90));

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

				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);

			if (noise_1 < 0.45) {

				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 < 0.45) {

				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 < 0.45) {

				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 < 0.45) {

				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(255);
	this->line.draw();

	ofSetColor(0);
	this->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"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openFrameworks");

ofBackground(255);

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 = 1.5;

float theta_deg_step = 6;

float R = 240;

float r = R * 0.25;

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) * 0.035, ofGetFrameNum() * 0.025));

if (noise_value < 0.45) { continue; }

auto noise_1 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg - theta_deg_step, phi_deg) * 0.035, ofGetFrameNum() * 0.025));

auto noise_2 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg + phi_deg_step) * 0.035, ofGetFrameNum() * 0.025));

auto noise_3 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg, phi_deg - phi_deg_step) * 0.035, ofGetFrameNum() * 0.025));

auto noise_4 = ofNoise(glm::vec4(this->make_point(R, r, theta_deg + theta_deg_step, phi_deg) * 0.035, 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)));

for (auto& vertex : vertices) {

auto rotation = glm::vec3(

ofMap(ofNoise(glm::vec4(vertex * 0.00085, seed.x + ofGetFrameNum() * 0.01)), 0, 1, -90, 90),

ofMap(ofNoise(glm::vec4(vertex * 0.00085, seed.y + ofGetFrameNum() * 0.01)), 0, 1, -90, 90),

ofMap(ofNoise(glm::vec4(vertex * 0.00085, seed.z + ofGetFrameNum() * 0.01)), 0, 1, -90, 90));

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

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

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

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);

if (noise_1 < 0.45) {

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 < 0.45) {

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 < 0.45) {

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 < 0.45) {

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(255);

this->line.draw();

ofSetColor(0);

this->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/Insta20221130

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2022年12月
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