プログラミング de 落描き – ページ 475 – クリエイティブ・コーディングによる生成物とソース

2021年8月18日2021年8月18日

Multi frame movie. Draw by openFrameworks

[ Video ]

[ About ]
OpenCVのcv::MatとopenFrameworksのofImageを関連づける。

Associate OpenCV’s cv::Mat with openFrameworks’ ofImage.

auto image = make_unique<ofImage>();
image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);
cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);

auto image = make_unique<ofImage>();

image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);

cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);

[ Source ]

#pragma once
#include "ofMain.h"
#include "opencv2/opencv.hpp"

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;

	cv::VideoCapture cap;
	cv::Size cap_size;
	deque<cv::Mat> frame_list;
	int frame_list_count;

	float rect_size;
	vector<cv::Mat> rect_frames;
	vector<unique_ptr<ofImage>> rect_images;
	vector<cv::Rect> cv_rects;
};

#pragma once

#include "ofMain.h"

#include "opencv2/opencv.hpp"

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;

cv::VideoCapture cap;

cv::Size cap_size;

deque<cv::Mat> frame_list;

int frame_list_count;

float rect_size;

vector<cv::Mat> rect_frames;

vector<unique_ptr<ofImage>> rect_images;

vector<cv::Rect> cv_rects;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(255);
	ofEnableDepthTest();
	ofDisableArbTex();

	this->frame_list_count = 60;

	this->cap.open("D:\\MP4\\production ID_4711774.mp4"); // Video URL https://www.pexels.com/video/video-of-streets-in-japan-during-daytime-4711774/
	this->cap_size = cv::Size(640, 360);

	this->rect_size = 40;
	for (int x = 0; x < this->cap_size.width; x += this->rect_size) {

		for (int y = 0; y < this->cap_size.height; y += this->rect_size) {

			auto image = make_unique<ofImage>();
			image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);
			cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);
			cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);

			this->rect_images.push_back(move(image));
			this->cv_rects.push_back(rect);
			this->rect_frames.push_back(frame);
		}
	}
}

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

	ofSeedRandom(39);

	cv::Mat frame, resize;

	this->cap >> frame;
	if (frame.empty()) { 
		
		this->cap.set(cv::CAP_PROP_POS_FRAMES, 0);
		return; 
	}

	cv::cvtColor(frame, frame, cv::COLOR_BGR2RGB);
	cv::resize(frame, resize, this->cap_size);

	this->frame_list.push_front(resize);
	while (this->frame_list.size() > this->frame_list_count) {

		this->frame_list.pop_back();
	}
}

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

	this->cam.begin();
	ofTranslate(this->cap_size.width * -0.5 + this->rect_size * 0.5, this->cap_size.height * -0.5 - this->rect_size * 0.5, 0);

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

		float noise_seed = ofRandom(1000);
		int frame_index = ofMap(ofNoise(noise_seed, this->cv_rects[i].x * 0.005, this->cv_rects[i].y * 0.005, ofGetFrameNum() * 0.01), 0, 1, 0, this->frame_list.size());

		cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rects[i]);
		tmp_box_image.copyTo(this->rect_frames[i]);

		this->rect_images[i]->update();
		this->rect_images[i]->getTexture().bind();
		ofSetColor(255);
		ofFill();
		ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5);
		this->rect_images[i]->unbind();

		ofSetColor(39);
		ofNoFill();
		ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5);
	}

	/*
	// 元動画と比べる時にはコメントを外す

	ofTranslate(0, this->cap_size.height * 1.2);

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

		int frame_index = 0;

		cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rects[i]);
		tmp_box_image.copyTo(this->rect_frames[i]);

		this->rect_images[i]->update();
		this->rect_images[i]->getTexture().bind();
		ofSetColor(255);
		ofFill();
		ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5);
		this->rect_images[i]->unbind();

		ofSetColor(39);
		ofNoFill();
		ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5);
	}
	*/

	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);

ofSetColor(255);

ofEnableDepthTest();

ofDisableArbTex();

this->frame_list_count = 60;

this->cap.open("D:\\MP4\\production ID_4711774.mp4"); // Video URL https://www.pexels.com/video/video-of-streets-in-japan-during-daytime-4711774/

this->cap_size = cv::Size(640, 360);

this->rect_size = 40;

for (int x = 0; x < this->cap_size.width; x += this->rect_size) {

for (int y = 0; y < this->cap_size.height; y += this->rect_size) {

auto image = make_unique<ofImage>();

image->allocate(this->rect_size, this->rect_size, OF_IMAGE_COLOR);

cv::Mat frame = cv::Mat(cv::Size(image->getWidth(), image->getHeight()), CV_MAKETYPE(CV_8UC3, image->getPixels().getNumChannels()), image->getPixels().getData(), 0);

cv::Rect rect = cv::Rect(x, y, this->rect_size, this->rect_size);

this->rect_images.push_back(move(image));

this->cv_rects.push_back(rect);

this->rect_frames.push_back(frame);

}

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

void ofApp::update() {

ofSeedRandom(39);

cv::Mat frame, resize;

this->cap >> frame;

if (frame.empty()) {

this->cap.set(cv::CAP_PROP_POS_FRAMES, 0);

return;

}

cv::cvtColor(frame, frame, cv::COLOR_BGR2RGB);

cv::resize(frame, resize, this->cap_size);

this->frame_list.push_front(resize);

while (this->frame_list.size() > this->frame_list_count) {

this->frame_list.pop_back();

}

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

void ofApp::draw() {

this->cam.begin();

ofTranslate(this->cap_size.width * -0.5 + this->rect_size * 0.5, this->cap_size.height * -0.5 - this->rect_size * 0.5, 0);

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

float noise_seed = ofRandom(1000);

int frame_index = ofMap(ofNoise(noise_seed, this->cv_rects[i].x * 0.005, this->cv_rects[i].y * 0.005, ofGetFrameNum() * 0.01), 0, 1, 0, this->frame_list.size());

cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rects[i]);

tmp_box_image.copyTo(this->rect_frames[i]);

this->rect_images[i]->update();

this->rect_images[i]->getTexture().bind();

ofSetColor(255);

ofFill();

ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5);

this->rect_images[i]->unbind();

ofSetColor(39);

ofNoFill();

ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5);

}

// 元動画と比べる時にはコメントを外す

ofTranslate(0, this->cap_size.height * 1.2);

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

int frame_index = 0;

cv::Mat tmp_box_image(this->frame_list[frame_index], this->cv_rects[i]);

tmp_box_image.copyTo(this->rect_frames[i]);

this->rect_images[i]->update();

this->rect_images[i]->getTexture().bind();

ofSetColor(255);

ofFill();

ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5);

this->rect_images[i]->unbind();

ofSetColor(39);

ofNoFill();

ofDrawBox(glm::vec3(this->cv_rects[i].x, this->cap_size.height - this->cv_rects[i].y, 0), this->rect_size, this->rect_size, 5);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210818
https://www.pexels.com/video/video-of-streets-in-japan-during-daytime-4711774/

2021年8月17日2021年8月17日

Scrap and build. Draw by openFrameworks

[ Video ]

[ About ]
ffmpegを使って、キャプチャ動画とそれをリバースさせた動画を合成する。

Using ffmpeg, synthesize the captured video and the video that was reversed from it.

[ 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);
	Actor(int select_index, 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) {
		
		if (key == 'r' && key == 'R') {

			this->rec_flag = true;
		}
	};
	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) {};

	bool rec_flag = false;

	ofTrueTypeFont font;
	vector<string> word_list;
	int word_index;

	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);

Actor(int select_index, 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) {

if (key == 'r' && key == 'R') {

this->rec_flag = true;

}

};

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) {};

bool rec_flag = false;

ofTrueTypeFont font;

vector<string> word_list;

int word_index;

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;
}

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

	this->select_index = select_index;
	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->location = location_list[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() > 50) { 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(239);
	ofSetLineWidth(2);
	ofEnableDepthTest();

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 350, true, true, true);

	this->word_list = vector<string>{ "S", "&", "B" };
	this->word_index = 0;
}

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

	if (ofGetFrameNum() % 120 == 0) {

		this->location_list.clear();
		this->next_index_list.clear();
		this->destination_list.clear();
		this->actor_list.clear();

		auto span = 8;

		for (int x = span * 10; x < ofGetWidth() - span * 10; x += span) {

			for (int y = span * 10; y < ofGetHeight() - span * 10; y += span) {

				for (int z = -300; z <= 300; z += 300) {

					this->location_list.push_back(glm::vec3(x, y, 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);
				if (distance <= span) {

					if (location.x > ofGetWidth() * 0.5 && location.x <= other.x) {

						if (location.y > ofGetHeight() * 0.5 && location.y <= other.y) {

							next_index.push_back(index);
						}

						if (location.y <= ofGetHeight() * 0.5 && location.y >= other.y) {

							next_index.push_back(index);
						}
					}

					if (location.x <= ofGetWidth() * 0.5 && location.x >= other.x) {

						if (location.y > ofGetHeight() * 0.5 && location.y <= other.y) {

							next_index.push_back(index);
						}

						if (location.y <= ofGetHeight() * 0.5 && location.y >= other.y) {

							next_index.push_back(index);
						}
					}
				}
			}

			this->next_index_list.push_back(next_index);
		}

		for (int z = -300; z <= 300; z += 300) {

			ofFbo fbo;
			fbo.allocate(ofGetWidth(), ofGetHeight());
			fbo.begin();
			ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
			ofClear(0);
			ofSetColor(0);

			string word = this->word_list[this->word_index];
			this->word_index = (this->word_index + 1) % this->word_list.size();
			this->font.drawString(word, this->font.stringWidth(word) * -0.5, this->font.stringHeight(word) - 150);

			fbo.end();

			ofPixels pixels;
			fbo.readToPixels(pixels);
			for (int x = 0; x < fbo.getWidth(); x += span) {

				for (int y = 0; y < fbo.getHeight(); y += span) {

					ofColor color = pixels.getColor(x, y);
					if (color != ofColor(0, 0)) {

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

							if (this->location_list[i] == glm::vec3(x, y, z)) {

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

	if (ofGetFrameNum() % 120 < 15) {

		return;
	}

	int frame_span = 1;
	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();
	ofRotateX(180);
	ofTranslate(ofGetWidth() * -0.5, ofGetHeight() * -0.5, 300);	

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

		ofSetColor(39);
		ofFill();
		ofDrawBox(actor->getLocation(), 8);

		ofSetColor(239);
		ofNoFill();
		ofDrawBox(actor->getLocation(), 8);
	}

	this->cam.end();
}


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

}

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

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

this->select_index = select_index;

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->location = location_list[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() > 50) { 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(239);

ofSetLineWidth(2);

ofEnableDepthTest();

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 350, true, true, true);

this->word_list = vector<string>{ "S", "&", "B" };

this->word_index = 0;

}

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

void ofApp::update() {

if (ofGetFrameNum() % 120 == 0) {

this->location_list.clear();

this->next_index_list.clear();

this->destination_list.clear();

this->actor_list.clear();

auto span = 8;

for (int x = span * 10; x < ofGetWidth() - span * 10; x += span) {

for (int y = span * 10; y < ofGetHeight() - span * 10; y += span) {

for (int z = -300; z <= 300; z += 300) {

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

if (distance <= span) {

if (location.x > ofGetWidth() * 0.5 && location.x <= other.x) {

if (location.y > ofGetHeight() * 0.5 && location.y <= other.y) {

next_index.push_back(index);

}

if (location.y <= ofGetHeight() * 0.5 && location.y >= other.y) {

next_index.push_back(index);

}

if (location.x <= ofGetWidth() * 0.5 && location.x >= other.x) {

if (location.y > ofGetHeight() * 0.5 && location.y <= other.y) {

next_index.push_back(index);

}

if (location.y <= ofGetHeight() * 0.5 && location.y >= other.y) {

next_index.push_back(index);

}

this->next_index_list.push_back(next_index);

}

for (int z = -300; z <= 300; z += 300) {

ofFbo fbo;

fbo.allocate(ofGetWidth(), ofGetHeight());

fbo.begin();

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

ofClear(0);

ofSetColor(0);

string word = this->word_list[this->word_index];

this->word_index = (this->word_index + 1) % this->word_list.size();

this->font.drawString(word, this->font.stringWidth(word) * -0.5, this->font.stringHeight(word) - 150);

fbo.end();

ofPixels pixels;

fbo.readToPixels(pixels);

for (int x = 0; x < fbo.getWidth(); x += span) {

for (int y = 0; y < fbo.getHeight(); y += span) {

ofColor color = pixels.getColor(x, y);

if (color != ofColor(0, 0)) {

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

if (this->location_list[i] == glm::vec3(x, y, z)) {

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

break;

}

if (ofGetFrameNum() % 120 < 15) {

return;

}

int frame_span = 1;

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();

ofRotateX(180);

ofTranslate(ofGetWidth() * -0.5, ofGetHeight() * -0.5, 300);

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

ofSetColor(39);

ofFill();

ofDrawBox(actor->getLocation(), 8);

ofSetColor(239);

ofNoFill();

ofDrawBox(actor->getLocation(), 8);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210817

[ Kinako ]

2021年8月16日2021年8月16日

Escape charactor. Draw by openFrameworks

[ Video ]

[ About ]
ランダムウォークの行き先を座標情報で制限する。

Limit the destination of the random walk by coordinate information.

[ 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);
	Actor(int select_index, 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) {};

	ofTrueTypeFont font;
	vector<string> word_list;
	int word_index;

	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);

Actor(int select_index, 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) {};

ofTrueTypeFont font;

vector<string> word_list;

int word_index;

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;
}

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

	this->select_index = select_index;
	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->location = location_list[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() > 50) { 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(239);
	ofSetLineWidth(2);
	ofEnableDepthTest();

	this->font.loadFont("fonts/Kazesawa-Bold.ttf", 350, true, true, true);

	this->word_list = vector<string>{ "E", "S", "C", "A", "P", "E" };
	this->word_index = 0;
}

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

	if (ofGetFrameNum() % 120 == 0) {

		this->location_list.clear();
		this->next_index_list.clear();
		this->destination_list.clear();
		this->actor_list.clear();

		ofFbo fbo;
		fbo.allocate(ofGetWidth(), ofGetHeight());
		fbo.begin();
		ofTranslate(ofGetWidth() * 0.5, ofGetHeight() * 0.5);
		ofClear(0);
		ofSetColor(0);

		string word = this->word_list[this->word_index];
		this->word_index = (this->word_index + 1) % this->word_list.size();
		this->font.drawString(word, this->font.stringWidth(word) * -0.5, this->font.stringHeight(word) - 150);

		fbo.end();

		auto span = 8;

		for (int x = span * 10; x < ofGetWidth() - span * 10; x += span) {

			for (int y = span * 10; y < ofGetHeight() - span * 10; 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) {

					if (location.x > ofGetWidth() * 0.5 && location.x <= other.x) {

						if (location.y > ofGetHeight() * 0.5 && location.y <= other.y) {

							next_index.push_back(index);
						}

						if (location.y <= ofGetHeight() * 0.5 && location.y >= other.y) {

							next_index.push_back(index);
						}
					}

					if (location.x <= ofGetWidth() * 0.5 && location.x >= other.x) {

						if (location.y > ofGetHeight() * 0.5 && location.y <= other.y) {

							next_index.push_back(index);
						}

						if (location.y <= ofGetHeight() * 0.5 && location.y >= other.y) {

							next_index.push_back(index);
						}
					}
				}
			}

			this->next_index_list.push_back(next_index);
		}

		ofPixels pixels;
		fbo.readToPixels(pixels);
		for (int x = 0; x < fbo.getWidth(); x += span) {

			for (int y = 0; y < fbo.getHeight(); y += span) {

				ofColor color = pixels.getColor(x, y);
				if (color != ofColor(0, 0)) {

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

						if (this->location_list[i] == glm::vec3(x, y, 0)) {

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

	if (ofGetFrameNum() % 120 < 15) {

		return;
	}

	int frame_span = 1;
	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();
	ofRotateX(180);
	ofTranslate(ofGetWidth() * -0.5, ofGetHeight() * -0.75);	

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

		ofSetColor(39);
		ofFill();
		ofDrawBox(actor->getLocation(), 8);

		ofSetColor(239);
		ofNoFill();
		ofDrawBox(actor->getLocation(), 8);
	}

	this->cam.end();
}


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

}

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

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

this->select_index = select_index;

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->location = location_list[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() > 50) { 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(239);

ofSetLineWidth(2);

ofEnableDepthTest();

this->font.loadFont("fonts/Kazesawa-Bold.ttf", 350, true, true, true);

this->word_list = vector<string>{ "E", "S", "C", "A", "P", "E" };

this->word_index = 0;

}

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

void ofApp::update() {

if (ofGetFrameNum() % 120 == 0) {

this->location_list.clear();

this->next_index_list.clear();

this->destination_list.clear();

this->actor_list.clear();

ofFbo fbo;

fbo.allocate(ofGetWidth(), ofGetHeight());

fbo.begin();

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

ofClear(0);

ofSetColor(0);

string word = this->word_list[this->word_index];

this->word_index = (this->word_index + 1) % this->word_list.size();

this->font.drawString(word, this->font.stringWidth(word) * -0.5, this->font.stringHeight(word) - 150);

fbo.end();

auto span = 8;

for (int x = span * 10; x < ofGetWidth() - span * 10; x += span) {

for (int y = span * 10; y < ofGetHeight() - span * 10; 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) {

if (location.x > ofGetWidth() * 0.5 && location.x <= other.x) {

if (location.y > ofGetHeight() * 0.5 && location.y <= other.y) {

next_index.push_back(index);

}

if (location.y <= ofGetHeight() * 0.5 && location.y >= other.y) {

next_index.push_back(index);

}

if (location.x <= ofGetWidth() * 0.5 && location.x >= other.x) {

if (location.y > ofGetHeight() * 0.5 && location.y <= other.y) {

next_index.push_back(index);

}

if (location.y <= ofGetHeight() * 0.5 && location.y >= other.y) {

next_index.push_back(index);

}

this->next_index_list.push_back(next_index);

}

ofPixels pixels;

fbo.readToPixels(pixels);

for (int x = 0; x < fbo.getWidth(); x += span) {

for (int y = 0; y < fbo.getHeight(); y += span) {

ofColor color = pixels.getColor(x, y);

if (color != ofColor(0, 0)) {

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

if (this->location_list[i] == glm::vec3(x, y, 0)) {

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

break;

}

if (ofGetFrameNum() % 120 < 15) {

return;

}

int frame_span = 1;

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();

ofRotateX(180);

ofTranslate(ofGetWidth() * -0.5, ofGetHeight() * -0.75);

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

ofSetColor(39);

ofFill();

ofDrawBox(actor->getLocation(), 8);

ofSetColor(239);

ofNoFill();

ofDrawBox(actor->getLocation(), 8);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20210816

[ Kinako ]

2025年7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	29	30	31