プログラミング de 落描き – ページ 8 – クリエイティブ・コーディングによる生成物とソース

2025年11月29日

Tube.

[ Video ]

[ About ]
チューブ。

[ 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(25);
	ofSetWindowTitle("openframeworks");

	ofBackground(39);
}

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

}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	int deg_span = 120;
	int radius_span = 1;

	for (int deg_len = 5; deg_len > 0; deg_len -= 1) {

		ofSetColor(ofMap(deg_len, 5, 1, 255, 0));

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

			for (int radius = 5; radius < 720; radius += radius_span) {

				auto noise_deg = ofMap(ofNoise(radius * 0.0025 - ofGetFrameNum() * 0.01), 0, 1, 180, -180);
				auto next_noise_deg = ofMap(ofNoise((radius + radius_span) * 0.0025 - ofGetFrameNum() * 0.01), 0, 1, 180, -180);

				ofBeginShape();
				ofVertex(glm::vec2(radius * cos((deg + noise_deg - deg_len) * DEG_TO_RAD), radius * sin((deg + noise_deg - deg_len) * DEG_TO_RAD)));
				ofVertex(glm::vec2(radius * cos((deg + noise_deg + deg_len) * DEG_TO_RAD), radius * sin((deg + noise_deg + deg_len) * DEG_TO_RAD)));
				ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg + deg_len) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg + deg_len) * DEG_TO_RAD)));
				ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg - deg_len) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg - deg_len) * DEG_TO_RAD)));
				ofEndShape(true);

				noise_deg = ofMap(ofNoise(radius * 0.0025 - ofGetFrameNum() * 0.01), 0, 1, -180, 180);
				next_noise_deg = ofMap(ofNoise((radius + radius_span) * 0.0025 - ofGetFrameNum() * 0.01), 0, 1, -180, 180);

				ofBeginShape();
				ofVertex(glm::vec2(radius * cos((deg + noise_deg - deg_len) * DEG_TO_RAD), radius * sin((deg + noise_deg - deg_len) * DEG_TO_RAD)));
				ofVertex(glm::vec2(radius * cos((deg + noise_deg + deg_len) * DEG_TO_RAD), radius * sin((deg + noise_deg + deg_len) * DEG_TO_RAD)));
				ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg + deg_len) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg + deg_len) * DEG_TO_RAD)));
				ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg - deg_len) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg - deg_len) * DEG_TO_RAD)));
				ofEndShape(true);
			}
		}
	}

	/*
	// ffmpeg -i img_%04d.jpg aaa.mp4
	int start = 250;
	if (ofGetFrameNum() > start) {

		std::ostringstream os;
		os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(39);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

int deg_span = 120;

int radius_span = 1;

for (int deg_len = 5; deg_len > 0; deg_len -= 1) {

ofSetColor(ofMap(deg_len, 5, 1, 255, 0));

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

for (int radius = 5; radius < 720; radius += radius_span) {

auto noise_deg = ofMap(ofNoise(radius * 0.0025 - ofGetFrameNum() * 0.01), 0, 1, 180, -180);

auto next_noise_deg = ofMap(ofNoise((radius + radius_span) * 0.0025 - ofGetFrameNum() * 0.01), 0, 1, 180, -180);

ofBeginShape();

ofVertex(glm::vec2(radius * cos((deg + noise_deg - deg_len) * DEG_TO_RAD), radius * sin((deg + noise_deg - deg_len) * DEG_TO_RAD)));

ofVertex(glm::vec2(radius * cos((deg + noise_deg + deg_len) * DEG_TO_RAD), radius * sin((deg + noise_deg + deg_len) * DEG_TO_RAD)));

ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg + deg_len) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg + deg_len) * DEG_TO_RAD)));

ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg - deg_len) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg - deg_len) * DEG_TO_RAD)));

ofEndShape(true);

noise_deg = ofMap(ofNoise(radius * 0.0025 - ofGetFrameNum() * 0.01), 0, 1, -180, 180);

next_noise_deg = ofMap(ofNoise((radius + radius_span) * 0.0025 - ofGetFrameNum() * 0.01), 0, 1, -180, 180);

ofBeginShape();

ofVertex(glm::vec2(radius * cos((deg + noise_deg - deg_len) * DEG_TO_RAD), radius * sin((deg + noise_deg - deg_len) * DEG_TO_RAD)));

ofVertex(glm::vec2(radius * cos((deg + noise_deg + deg_len) * DEG_TO_RAD), radius * sin((deg + noise_deg + deg_len) * DEG_TO_RAD)));

ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg + deg_len) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg + deg_len) * DEG_TO_RAD)));

ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg - deg_len) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg - deg_len) * DEG_TO_RAD)));

ofEndShape(true);

}

// ffmpeg -i img_%04d.jpg aaa.mp4

int start = 250;

if (ofGetFrameNum() > start) {

std::ostringstream os;

os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;

ofImage image;

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

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

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/DoodleDeProgramming/tree/346a9f366aa5b4b6de387daacd9ac9cca05d7383

2025年11月28日

Circle pattern.

[ Video ]

[ About ]
円の柄。

[ 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(25);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetColor(0);
}

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

}

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

	ofTranslate(ofGetWindowSize() * 0.5);

	int deg_span = 30;
	int radius_span = 1;
	for (int deg = 0; deg < 360; deg += deg_span) {

		for (int radius = 15; radius < 720; radius += radius_span) {

			auto noise_deg = ofMap(ofNoise(radius * 0.0015 - ofGetFrameNum() * 0.005), 0, 1, 360, -360);
			auto next_noise_deg = ofMap(ofNoise((radius + radius_span) * 0.0015 - ofGetFrameNum() * 0.005), 0, 1, 360, -360);

			ofBeginShape();
			ofVertex(glm::vec2(radius * cos((deg + noise_deg - 5) * DEG_TO_RAD), radius * sin((deg + noise_deg - 5) * DEG_TO_RAD)));
			ofVertex(glm::vec2(radius * cos((deg + noise_deg + 5) * DEG_TO_RAD), radius * sin((deg + noise_deg + 5) * DEG_TO_RAD)));
			ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg + 5) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg + 5) * DEG_TO_RAD)));
			ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg - 5) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg - 5) * DEG_TO_RAD)));
			ofEndShape(true);

			noise_deg = ofMap(ofNoise(radius * 0.0015 - ofGetFrameNum() * 0.005), 0, 1, -360, 360);
			next_noise_deg = ofMap(ofNoise((radius + radius_span) * 0.0015 - ofGetFrameNum() * 0.005), 0, 1, -360, 360);

			ofBeginShape();
			ofVertex(glm::vec2(radius * cos((deg + noise_deg - 5) * DEG_TO_RAD), radius * sin((deg + noise_deg - 5) * DEG_TO_RAD)));
			ofVertex(glm::vec2(radius * cos((deg + noise_deg + 5) * DEG_TO_RAD), radius * sin((deg + noise_deg + 5) * DEG_TO_RAD)));
			ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg + 5) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg + 5) * DEG_TO_RAD)));
			ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg - 5) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg - 5) * DEG_TO_RAD)));
			ofEndShape(true);
		}
	}

	/*
	// ffmpeg -i img_%04d.jpg aaa.mp4
	int start = 250;
	if (ofGetFrameNum() > start) {

		std::ostringstream os;
		os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(0);

}

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

void ofApp::update() {

}

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

void ofApp::draw() {

ofTranslate(ofGetWindowSize() * 0.5);

int deg_span = 30;

int radius_span = 1;

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

for (int radius = 15; radius < 720; radius += radius_span) {

auto noise_deg = ofMap(ofNoise(radius * 0.0015 - ofGetFrameNum() * 0.005), 0, 1, 360, -360);

auto next_noise_deg = ofMap(ofNoise((radius + radius_span) * 0.0015 - ofGetFrameNum() * 0.005), 0, 1, 360, -360);

ofBeginShape();

ofVertex(glm::vec2(radius * cos((deg + noise_deg - 5) * DEG_TO_RAD), radius * sin((deg + noise_deg - 5) * DEG_TO_RAD)));

ofVertex(glm::vec2(radius * cos((deg + noise_deg + 5) * DEG_TO_RAD), radius * sin((deg + noise_deg + 5) * DEG_TO_RAD)));

ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg + 5) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg + 5) * DEG_TO_RAD)));

ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg - 5) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg - 5) * DEG_TO_RAD)));

ofEndShape(true);

noise_deg = ofMap(ofNoise(radius * 0.0015 - ofGetFrameNum() * 0.005), 0, 1, -360, 360);

next_noise_deg = ofMap(ofNoise((radius + radius_span) * 0.0015 - ofGetFrameNum() * 0.005), 0, 1, -360, 360);

ofBeginShape();

ofVertex(glm::vec2(radius * cos((deg + noise_deg - 5) * DEG_TO_RAD), radius * sin((deg + noise_deg - 5) * DEG_TO_RAD)));

ofVertex(glm::vec2(radius * cos((deg + noise_deg + 5) * DEG_TO_RAD), radius * sin((deg + noise_deg + 5) * DEG_TO_RAD)));

ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg + 5) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg + 5) * DEG_TO_RAD)));

ofVertex(glm::vec2((radius + radius_span) * cos((deg + next_noise_deg - 5) * DEG_TO_RAD), (radius + radius_span) * sin((deg + next_noise_deg - 5) * DEG_TO_RAD)));

ofEndShape(true);

}

// ffmpeg -i img_%04d.jpg aaa.mp4

int start = 250;

if (ofGetFrameNum() > start) {

std::ostringstream os;

os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;

ofImage image;

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

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

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/DoodleDeProgramming/tree/02ded16897aedc3d81478434947a9c97d122ce9d

2025年11月27日

Dynamic mesh.

[ Video ]

[ About ]
動的網目。

[ 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();

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<std::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();

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<std::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;
}

//--------------------------------------------------------------
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() > 90) { this->log.pop_back(); }
}

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

	return this->location;
}

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

	return this->log;
}

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

	ofSetFrameRate(25);
	ofSetWindowTitle("openFrameworks");

	ofBackground(39);
	ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

	auto span = 30;
	for (int x = -345; x <= 345; x += span) {

		for (int y = -345; y <= 345; 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 < 80; 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 = 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() {

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

	ofColor color;
	color.setHsb(ofMap(ofGetFrameNum() % 500, 0, 500, 0, 255), 200, 255);
	ofSetColor(color);

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

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

			ofDrawRectangle(l, 5, 5);
		}
	}

	/*
	// ffmpeg -i img_%04d.jpg aaa.mp4
	int start = 250;
	if (ofGetFrameNum() > start) {

		std::ostringstream os;
		os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;
		ofImage image;
		image.grabScreen(0, 0, ofGetWidth(), ofGetHeight());
		image.saveImage("image/cap/img_" + os.str() + ".jpg");
		if (ofGetFrameNum() - start >= 25 * 20) {

			std::exit(1);
		}
	}
	*/
}

//--------------------------------------------------------------
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() > 90) { this->log.pop_back(); }

}

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

glm::vec3 Actor::getLocation() {

return this->location;

}

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

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

return this->log;

}

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

void ofApp::setup() {

ofSetFrameRate(25);

ofSetWindowTitle("openFrameworks");

ofBackground(39);

ofSetRectMode(ofRectMode::OF_RECTMODE_CENTER);

auto span = 30;

for (int x = -345; x <= 345; x += span) {

for (int y = -345; y <= 345; 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 < 80; 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 = 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() {

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

ofColor color;

color.setHsb(ofMap(ofGetFrameNum() % 500, 0, 500, 0, 255), 200, 255);

ofSetColor(color);

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

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

ofDrawRectangle(l, 5, 5);

}

// ffmpeg -i img_%04d.jpg aaa.mp4

int start = 250;

if (ofGetFrameNum() > start) {

std::ostringstream os;

os << std::setw(4) << std::setfill('0') << ofGetFrameNum() - start;

ofImage image;

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

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

if (ofGetFrameNum() - start >= 25 * 20) {

std::exit(1);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/DoodleDeProgramming/tree/c919c17534c2f387ba983856ff9345cdb71a1fe3

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