box2d – ページ 7 – プログラミング de 落描き

2020年4月15日

Physics And Sound 2020. openFrameworks

[ Video ]

[ About ]
The theme for 4/15 of the #dailycodingchallenge was “improvisation”, so I modified a post from the past (8/9/2018).

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBox2d.h"

#include "Particle.h"
#include "Obstruct.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 mouseEntered(int x, int y) {}
	void mouseExited(int x, int y) {}
	void windowResized(int w, int h) {}
	void dragEvent(ofDragInfo dragInfo) {}
	void gotMessage(ofMessage msg) {}

	void contactStart(ofxBox2dContactArgs &e);
	void contactEnd(ofxBox2dContactArgs &e);

	ofxBox2d box2d;
	vector<unique_ptr<Particle>> particles;
	vector<unique_ptr<Obstruct>> obstructs;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.h"

#include "Particle.h"

#include "Obstruct.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 mouseEntered(int x, int y) {}

void mouseExited(int x, int y) {}

void windowResized(int w, int h) {}

void dragEvent(ofDragInfo dragInfo) {}

void gotMessage(ofMessage msg) {}

void contactStart(ofxBox2dContactArgs &e);

void contactEnd(ofxBox2dContactArgs &e);

ofxBox2d box2d;

vector<unique_ptr<Particle>> particles;

vector<unique_ptr<Obstruct>> obstructs;

};

#include "ofApp.h"

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

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

	ofBackground(239);

	this->box2d.init();
	this->box2d.enableEvents();
	this->box2d.setGravity(0, 15);
	this->box2d.createBounds();
	this->box2d.setFPS(60);
	this->box2d.registerGrabbing();

	ofAddListener(box2d.contactStartEvents, this, &ofApp::contactStart);
	ofAddListener(box2d.contactEndEvents, this, &ofApp::contactEnd);

	vector<string> sound_path_list = { "sound/pianoC.mp3", "sound/pianoD.mp3", "sound/pianoE.mp3", "sound/pianoF.mp3", "sound/pianoG.mp3", "sound/pianoA.mp3", "sound/pianoB.mp3", "sound/pianoC2.mp3" };

	int number_of_sound = 8;
	for (int i = 0; i < number_of_sound; i++) {

		unique_ptr<Obstruct> ob(new Obstruct(this->box2d, ofPoint(i * 80 + 80, 640), 50, 50, i * 28));
		ob->SetSound(sound_path_list[i]);
		this->obstructs.push_back(std::move(ob));
	}
}

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

	if (ofGetFrameNum() % 10 == 0) {

		ofPoint point(ofRandom(ofGetWidth()) , 30);
		float radius = 8;
		unique_ptr<Particle> p(new Particle(this->box2d, point, radius));

		this->particles.push_back(std::move(p));
	}

	for (int i = this->particles.size() - 1; i >= 0; i--) {

		this->particles[i]->Update();
		if (this->particles[i]->IsDead()) {

			this->particles.erase(this->particles.begin() + i);
		}
	}

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

		this->obstructs[i]->Update();
	}

	this->box2d.update();
	ofSoundUpdate();
}

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

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

		this->obstructs[i]->Draw();
	}

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

		this->particles[i]->Draw();
	}
}

//--------------------------------------------------------------
void ofApp::contactStart(ofxBox2dContactArgs &e) {

	if (e.a != NULL && e.b != NULL) {

		if (e.a->GetType() == b2Shape::e_circle && e.b->GetType() == b2Shape::e_circle) {

			Particle* p_a = (Particle*)e.a->GetBody()->GetUserData();
			Particle* p_b = (Particle*)e.b->GetBody()->GetUserData();
			if (p_a != nullptr && p_b != nullptr) {

				// Particle Collide
			}

			return;
		}

		if (e.a->GetType() == b2Shape::e_polygon && e.b->GetType() == b2Shape::e_circle) {

			Obstruct* o_a = (Obstruct*)e.a->GetBody()->GetUserData();
			Particle* p_b = (Particle*)e.b->GetBody()->GetUserData();
			if (o_a != nullptr && p_b != nullptr) {

				p_b->SetColor(o_a->GetColor());
				o_a->SoundPlay();
			}

			return;
		}

		if (e.a->GetType() == b2Shape::e_circle && e.b->GetType() == b2Shape::e_polygon) {

			Particle* p_a = (Particle*)e.a->GetBody()->GetUserData();
			Obstruct* o_b = (Obstruct*)e.b->GetBody()->GetUserData();
			if (p_a != nullptr && o_b != nullptr) {

				p_a->SetColor(o_b->GetColor());
				o_b->SoundPlay();
			}

			return;
		}
	}
}

//--------------------------------------------------------------
void ofApp::contactEnd(ofxBox2dContactArgs &e) {

	if (e.a != NULL && e.b != NULL) {

		// do nothing
	}
}

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

this->box2d.init();

this->box2d.enableEvents();

this->box2d.setGravity(0, 15);

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

ofAddListener(box2d.contactStartEvents, this, &ofApp::contactStart);

ofAddListener(box2d.contactEndEvents, this, &ofApp::contactEnd);

vector<string> sound_path_list = { "sound/pianoC.mp3", "sound/pianoD.mp3", "sound/pianoE.mp3", "sound/pianoF.mp3", "sound/pianoG.mp3", "sound/pianoA.mp3", "sound/pianoB.mp3", "sound/pianoC2.mp3" };

int number_of_sound = 8;

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

unique_ptr<Obstruct> ob(new Obstruct(this->box2d, ofPoint(i * 80 + 80, 640), 50, 50, i * 28));

ob->SetSound(sound_path_list[i]);

this->obstructs.push_back(std::move(ob));

}

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

void ofApp::update() {

if (ofGetFrameNum() % 10 == 0) {

ofPoint point(ofRandom(ofGetWidth()) , 30);

float radius = 8;

unique_ptr<Particle> p(new Particle(this->box2d, point, radius));

this->particles.push_back(std::move(p));

}

for (int i = this->particles.size() - 1; i >= 0; i--) {

this->particles[i]->Update();

if (this->particles[i]->IsDead()) {

this->particles.erase(this->particles.begin() + i);

}

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

this->obstructs[i]->Update();

}

this->box2d.update();

ofSoundUpdate();

}

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

void ofApp::draw() {

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

this->obstructs[i]->Draw();

}

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

this->particles[i]->Draw();

}

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

void ofApp::contactStart(ofxBox2dContactArgs &e) {

if (e.a != NULL && e.b != NULL) {

if (e.a->GetType() == b2Shape::e_circle && e.b->GetType() == b2Shape::e_circle) {

Particle* p_a = (Particle*)e.a->GetBody()->GetUserData();

Particle* p_b = (Particle*)e.b->GetBody()->GetUserData();

if (p_a != nullptr && p_b != nullptr) {

// Particle Collide

}

return;

}

if (e.a->GetType() == b2Shape::e_polygon && e.b->GetType() == b2Shape::e_circle) {

Obstruct* o_a = (Obstruct*)e.a->GetBody()->GetUserData();

Particle* p_b = (Particle*)e.b->GetBody()->GetUserData();

if (o_a != nullptr && p_b != nullptr) {

p_b->SetColor(o_a->GetColor());

o_a->SoundPlay();

}

return;

}

if (e.a->GetType() == b2Shape::e_circle && e.b->GetType() == b2Shape::e_polygon) {

Particle* p_a = (Particle*)e.a->GetBody()->GetUserData();

Obstruct* o_b = (Obstruct*)e.b->GetBody()->GetUserData();

if (p_a != nullptr && o_b != nullptr) {

p_a->SetColor(o_b->GetColor());

o_b->SoundPlay();

}

return;

}

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

void ofApp::contactEnd(ofxBox2dContactArgs &e) {

if (e.a != NULL && e.b != NULL) {

// do nothing

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"
#include "ofxBox2d.h"

class Obstruct
{
public:

	Obstruct(ofxBox2d& box2d, ofPoint point, float width, float height, float fue);
	~Obstruct();

	void Update();
	void Draw();
	void SoundPlay();

	void SetSound(string soude_path);
	ofColor GetColor();
private:

	ofxBox2dRect* rect = nullptr;
	ofColor color;
	ofSoundPlayer sound;
	vector<float> waves;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.h"

class Obstruct

{

public:

Obstruct(ofxBox2d& box2d, ofPoint point, float width, float height, float fue);

~Obstruct();

void Update();

void Draw();

void SoundPlay();

void SetSound(string soude_path);

ofColor GetColor();

private:

ofxBox2dRect* rect = nullptr;

ofColor color;

ofSoundPlayer sound;

vector<float> waves;

};

#include "Obstruct.h"

//--------------------------------------------------------------
Obstruct::Obstruct(ofxBox2d& box2d, ofPoint point, float width, float height, float hue)
{
	this->rect = new ofxBox2dRect();
	this->rect->setPhysics(0.0, 1.0, 1.0);
	this->rect->setup(box2d.getWorld(), point.x, point.y, width, height);
	this->rect->setData(this);

	this->color.setHsb(hue, 255, 230);
}

//--------------------------------------------------------------
Obstruct::~Obstruct()
{
	if (this->rect != nullptr) {

		this->rect->destroy();
		delete this->rect;
	}
}

//--------------------------------------------------------------
void Obstruct::Update() {

	for (int i = this->waves.size() - 1; i >= 0; i -= 1) {

		this->waves[i] += 1;
		if (this->waves[i] > 60) {

			this->waves.erase(this->waves.begin() + i);
		}
	}

	int y = ofMap(ofNoise(this->rect->getPosition().x, ofGetFrameNum() * 0.005), 0, 1, 300, 640);

	this->rect->setPosition(ofPoint(this->rect->getPosition().x, y));	
}

//--------------------------------------------------------------
void Obstruct::Draw() {

	float width = this->rect->getWidth();
	float height = this->rect->getHeight();

	ofFill();
	ofSetColor(this->color);
	ofDrawRectangle(this->rect->getPosition() + ofPoint(width * -0.5, height * -0.5), width, height);

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

		ofNoFill();
		ofSetColor(this->color, ofMap(this->waves[i], 0, 60, 255, 0));

		float wave_width = width + waves[i];
		float wave_height = height + waves[i];

		ofDrawRectangle(this->rect->getPosition() + ofPoint(wave_width * -0.5, wave_height * -0.5), wave_width, wave_height);
	}
}

//--------------------------------------------------------------
void Obstruct::SoundPlay() {

	this->sound.play();
	this->waves.push_back(0);
}

//--------------------------------------------------------------
void Obstruct::SetSound(string sound_path) {

	this->sound.load(sound_path);
	this->sound.setVolume(0.5);
	this->sound.setMultiPlay(true);
}

//--------------------------------------------------------------
ofColor Obstruct::GetColor() { 
	
	return this->color; 
}

#include "Obstruct.h"

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

Obstruct::Obstruct(ofxBox2d& box2d, ofPoint point, float width, float height, float hue)

{

this->rect = new ofxBox2dRect();

this->rect->setPhysics(0.0, 1.0, 1.0);

this->rect->setup(box2d.getWorld(), point.x, point.y, width, height);

this->rect->setData(this);

this->color.setHsb(hue, 255, 230);

}

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

Obstruct::~Obstruct()

{

if (this->rect != nullptr) {

this->rect->destroy();

delete this->rect;

}

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

void Obstruct::Update() {

for (int i = this->waves.size() - 1; i >= 0; i -= 1) {

this->waves[i] += 1;

if (this->waves[i] > 60) {

this->waves.erase(this->waves.begin() + i);

}

int y = ofMap(ofNoise(this->rect->getPosition().x, ofGetFrameNum() * 0.005), 0, 1, 300, 640);

this->rect->setPosition(ofPoint(this->rect->getPosition().x, y));

}

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

void Obstruct::Draw() {

float width = this->rect->getWidth();

float height = this->rect->getHeight();

ofFill();

ofSetColor(this->color);

ofDrawRectangle(this->rect->getPosition() + ofPoint(width * -0.5, height * -0.5), width, height);

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

ofNoFill();

ofSetColor(this->color, ofMap(this->waves[i], 0, 60, 255, 0));

float wave_width = width + waves[i];

float wave_height = height + waves[i];

ofDrawRectangle(this->rect->getPosition() + ofPoint(wave_width * -0.5, wave_height * -0.5), wave_width, wave_height);

}

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

void Obstruct::SoundPlay() {

this->sound.play();

this->waves.push_back(0);

}

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

void Obstruct::SetSound(string sound_path) {

this->sound.load(sound_path);

this->sound.setVolume(0.5);

this->sound.setMultiPlay(true);

}

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

ofColor Obstruct::GetColor() {

return this->color;

}

#pragma once
#include "ofMain.h"
#include "ofxBox2d.h"

class Particle
{
public:

	Particle(ofxBox2d& box2d, ofPoint point, float radius);
	~Particle();

	void Update();
	void Draw();

	void SetColor(ofColor color);
	ofColor GetColor();
	bool IsDead();
private:

	ofxBox2dCircle* circle = nullptr;
	ofColor color;
	float life;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.h"

class Particle

{

public:

Particle(ofxBox2d& box2d, ofPoint point, float radius);

~Particle();

void Update();

void Draw();

void SetColor(ofColor color);

ofColor GetColor();

bool IsDead();

private:

ofxBox2dCircle* circle = nullptr;

ofColor color;

float life;

};

#include "Particle.h"

//--------------------------------------------------------------
Particle::Particle(ofxBox2d& box2d, ofPoint point, float radius)
{
	this->circle = new ofxBox2dCircle();
	this->circle->setPhysics(1.0, 0.3, 1.0);
	this->circle->setup(box2d.getWorld(), point.x, point.y, radius);
	this->circle->setData(this);

	this->color = ofColor(39);
	this->life = 255;
}

//--------------------------------------------------------------
Particle::~Particle()
{
	if (this->circle != nullptr) {

		this->circle->destroy();
		delete this->circle;
	}
}

//--------------------------------------------------------------
void Particle::Update() {

	this->life -= 1.5;
}

//--------------------------------------------------------------
void Particle::Draw() {

	ofFill();
	ofSetColor(this->color, this->life > 64 ? 255 : ofMap(this->life, 0, 64, 0, 255));
	ofDrawCircle(this->circle->getPosition(), this->circle->getRadius());
}


//--------------------------------------------------------------
void Particle::SetColor(ofColor color) { 
	
	this->color = color; 
}

//--------------------------------------------------------------
ofColor Particle::GetColor() { 

	return this->color; 
}

//--------------------------------------------------------------
bool Particle::IsDead() {
	
	return this->life <= 0; 
}

#include "Particle.h"

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

Particle::Particle(ofxBox2d& box2d, ofPoint point, float radius)

{

this->circle = new ofxBox2dCircle();

this->circle->setPhysics(1.0, 0.3, 1.0);

this->circle->setup(box2d.getWorld(), point.x, point.y, radius);

this->circle->setData(this);

this->color = ofColor(39);

this->life = 255;

}

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

Particle::~Particle()

{

if (this->circle != nullptr) {

this->circle->destroy();

delete this->circle;

}

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

void Particle::Update() {

this->life -= 1.5;

}

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

void Particle::Draw() {

ofFill();

ofSetColor(this->color, this->life > 64 ? 255 : ofMap(this->life, 0, 64, 0, 255));

ofDrawCircle(this->circle->getPosition(), this->circle->getRadius());

}

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

void Particle::SetColor(ofColor color) {

this->color = color;

}

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

ofColor Particle::GetColor() {

return this->color;

}

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

bool Particle::IsDead() {

return this->life <= 0;

}

[ Link ]
https://github.com/junkiyoshi/Insta20200415

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2020年4月6日2020年4月6日

dailycodingchallenge 4/6 漢字. openFrameworks

[ Video ]

[ About ]
Twitterで行われている #dailycodingchallenge にチャレンジしました。4月6日のお題は「漢字」です。
オブジェクトはお互いに反発しながら、近づくと線を引きます。中央には線の数を”漢字”で書かれます。

I took part in the #dailycodingchallenge on Twitter, and the theme for April 6th was “Kanji”.
The objects repel each other, drawing lines as they approach. In the center, the number of lines is written in “Kanji”.

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBox2d.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) {};

	ofTrueTypeFont font;
	vector<string> words;

	float radius;
	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dCircle>> circles;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.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) {};

ofTrueTypeFont font;

vector<string> words;

float radius;

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dCircle>> circles;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	ofSetLineWidth(2);

	ofTrueTypeFontSettings font_settings("fonts/msgothic.ttc", 20);
	font_settings.antialiased = true;
	font_settings.addRanges(ofAlphabet::Japanese);
	this->font.load(font_settings);

	this->words = {

		u8"零", u8"壱", u8"弐", u8"参", u8"肆",
		u8"伍", u8"陸", u8"漆", u8"捌", u8"玖",
		u8"多",
	};

	this->radius = 20;

	this->box2d.init();
	this->box2d.setGravity(0, 0);
	this->box2d.createBounds();
	this->box2d.setFPS(60);
	this->box2d.registerGrabbing();

	for (int i = 0; i < 80; i++) {

		auto circle = make_shared<ofxBox2dCircle>();
		circle->setPhysics(0.5, 0.63, 0.1);
		circle->setup(this->box2d.getWorld(), ofRandom(0, ofGetWidth()), ofRandom(0, ofGetHeight()), this->radius);
		this->circles.push_back(circle);
	}
}

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

	ofSeedRandom(39);

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

		for (int j = i + 1; j < this->circles.size(); j++) {

			float distance = this->circles[i]->getPosition().distance(this->circles[j]->getPosition());
			if (distance < this->radius * 4) {

				this->circles[i]->addForce(this->circles[i]->getPosition() - this->circles[j]->getPosition(), ofMap(distance, this->radius, this->radius * 4, 1.2, 0.002));
				this->circles[j]->addForce(this->circles[j]->getPosition() - this->circles[i]->getPosition(), ofMap(distance, this->radius, this->radius * 4, 1.2, 0.002));
			}
		}
	}

	this->box2d.update();
}

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

	auto threshold = 80;

	vector<glm::vec2> locations;
	for (int i = 0; i < this->circles.size(); i++) {

		glm::vec2 location = this->circles[i]->getPosition();
		locations.push_back(location);
	}

	for (auto& location : locations) {

		int word_index = 0;
		for (auto& other : locations) {

			if (location == other) { continue; }

			auto distance = glm::distance(location, other);
			if (distance < threshold) {

				if (word_index < words.size() - 1) { word_index++; }

				auto direction_rad = std::atan2(other.y - location.y, other.x - location.x);
				auto direction = direction_rad * RAD_TO_DEG;
				auto width = ofMap(distance, 0, threshold, 360, 0);

				ofNoFill();
				ofBeginShape();
				for (auto deg = direction - width * 0.5; deg <= direction + width * 0.5; deg++) {

					ofVertex(location.x + radius * cos(deg * DEG_TO_RAD), location.y + radius * sin(deg * DEG_TO_RAD));
				}
				ofEndShape();

				ofDrawLine(location + glm::vec2(radius * cos(direction * DEG_TO_RAD), radius * sin(direction * DEG_TO_RAD)),
					other + glm::vec2(radius * cos((180 + direction) * DEG_TO_RAD), radius * sin((180 + direction) * DEG_TO_RAD)));
			}
		}

		this->font.drawString(this->words[word_index], location.x - 12, location.y + 10);
	}
}

//--------------------------------------------------------------
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(39);

ofSetLineWidth(2);

ofTrueTypeFontSettings font_settings("fonts/msgothic.ttc", 20);

font_settings.antialiased = true;

font_settings.addRanges(ofAlphabet::Japanese);

this->font.load(font_settings);

this->words = {

u8"零", u8"壱", u8"弐", u8"参", u8"肆",

u8"伍", u8"陸", u8"漆", u8"捌", u8"玖",

u8"多",

};

this->radius = 20;

this->box2d.init();

this->box2d.setGravity(0, 0);

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

for (int i = 0; i < 80; i++) {

auto circle = make_shared<ofxBox2dCircle>();

circle->setPhysics(0.5, 0.63, 0.1);

circle->setup(this->box2d.getWorld(), ofRandom(0, ofGetWidth()), ofRandom(0, ofGetHeight()), this->radius);

this->circles.push_back(circle);

}

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

void ofApp::update() {

ofSeedRandom(39);

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

for (int j = i + 1; j < this->circles.size(); j++) {

float distance = this->circles[i]->getPosition().distance(this->circles[j]->getPosition());

if (distance < this->radius * 4) {

this->circles[i]->addForce(this->circles[i]->getPosition() - this->circles[j]->getPosition(), ofMap(distance, this->radius, this->radius * 4, 1.2, 0.002));

this->circles[j]->addForce(this->circles[j]->getPosition() - this->circles[i]->getPosition(), ofMap(distance, this->radius, this->radius * 4, 1.2, 0.002));

}

this->box2d.update();

}

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

void ofApp::draw() {

auto threshold = 80;

vector<glm::vec2> locations;

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

glm::vec2 location = this->circles[i]->getPosition();

locations.push_back(location);

}

for (auto& location : locations) {

int word_index = 0;

for (auto& other : locations) {

if (location == other) { continue; }

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

if (distance < threshold) {

if (word_index < words.size() - 1) { word_index++; }

auto direction_rad = std::atan2(other.y - location.y, other.x - location.x);

auto direction = direction_rad * RAD_TO_DEG;

auto width = ofMap(distance, 0, threshold, 360, 0);

ofNoFill();

ofBeginShape();

for (auto deg = direction - width * 0.5; deg <= direction + width * 0.5; deg++) {

ofVertex(location.x + radius * cos(deg * DEG_TO_RAD), location.y + radius * sin(deg * DEG_TO_RAD));

}

ofEndShape();

ofDrawLine(location + glm::vec2(radius * cos(direction * DEG_TO_RAD), radius * sin(direction * DEG_TO_RAD)),

other + glm::vec2(radius * cos((180 + direction) * DEG_TO_RAD), radius * sin((180 + direction) * DEG_TO_RAD)));

}

this->font.drawString(this->words[word_index], location.x - 12, location.y + 10);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200406

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2020年3月17日2020年3月17日

Repelling characters. openFrameworks

[ Video ]

[ About ]
お互いに反発し、一定の速度の間、変化する文字。

Repelling characters.

[ Source ]

#pragma once
#include "ofMain.h"
#include "ofxBox2d.h"

class dCharacter {

public:

	dCharacter() {};
	void update(vector<string>& words);

	shared_ptr<ofxBox2dRect> rect;
	int index = 0;
};

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) {};

	int font_size;
	ofTrueTypeFont font;
	vector<string> words;

	ofxBox2d box2d;
	vector<dCharacter> drop_char_list;
};

#pragma once

#include "ofMain.h"

#include "ofxBox2d.h"

class dCharacter {

public:

dCharacter() {};

void update(vector<string>& words);

shared_ptr<ofxBox2dRect> rect;

int index = 0;

};

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) {};

int font_size;

ofTrueTypeFont font;

vector<string> words;

ofxBox2d box2d;

vector<dCharacter> drop_char_list;

};

#include "ofApp.h"

//--------------------------------------------------------------
void dCharacter::update(vector<string>& words) {

	if (ofGetFrameNum() % 5 && this->rect->getVelocity().length() > 1.5) {

		this->index = ofRandom(words.size());
	}
}

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

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

	ofBackground(0);

	this->font_size = 25;
	ofTrueTypeFontSettings font_settings("fonts/msgothic.ttc", this->font_size);
	font_settings.antialiased = true;
	font_settings.addRanges(ofAlphabet::Japanese);
	this->font.load(font_settings);

	this->words = {

		u8"!", u8"#", u8"$", u8"%", u8"&",
		u8"'", u8"(", u8")", u8"*", u8"+",
		u8",", u8"-", u8".", u8"/", u8"0",
		u8"1", u8"2", u8"3", u8"4", u8"5",
		u8"6", u8"7", u8"8", u8"9", u8"0",
		u8":", u8";", u8"<", u8"=", u8">",
		u8"?", u8"@",

		u8"A", u8"B", u8"C", u8"D", u8"E",
		u8"F", u8"G", u8"H", u8"I", u8"J",
		u8"K", u8"L", u8"M", u8"N", u8"O",
		u8"P", u8"Q", u8"R", u8"S", u8"T",
		u8"U", u8"V", u8"W", u8"X", u8"Y", u8"Z",

		u8"a", u8"b", u8"c", u8"d", u8"e",
		u8"f", u8"g", u8"h", u8"i", u8"j",
		u8"k", u8"l", u8"m", u8"n", u8"o",
		u8"p", u8"q", u8"r", u8"s", u8"t",
		u8"u", u8"v", u8"w", u8"x", u8"y", u8"z",

		u8"ｱ", u8"ｲ", u8"ｳ", u8"ｴ", u8"ｵ",
		u8"ｶ", u8"ｷ", u8"ｸ", u8"ｹ", u8"ｺ",
		u8"ｻ", u8"ｼ", u8"ｽ", u8"ｾ", u8"ｿ",
		u8"ﾀ", u8"ﾁ", u8"ﾂ", u8"ﾃ", u8"ﾄ",
		u8"ﾅ", u8"ﾆ", u8"ﾇ", u8"ﾈ", u8"ﾉ",
		u8"ﾊ", u8"ﾋ", u8"ﾌ", u8"ﾍ", u8"ﾎ",
		u8"ﾏ", u8"ﾐ", u8"ﾑ", u8"ﾒ", u8"ﾓ",
		u8"ﾔ", u8"ﾕ", u8"ﾖ",
		u8"ﾗ", u8"ﾘ", u8"ﾙ", u8"ﾚ", u8"ﾛ",
		u8"ﾜ", u8"ｦ", u8"ﾝ",
	};

	this->box2d.init();
	this->box2d.setGravity(0, 0);
	this->box2d.createBounds();
	this->box2d.setFPS(60);
	this->box2d.registerGrabbing();

	for (int i = 0; i < 135; i++) {

		auto rect = make_shared<ofxBox2dRect>();
		rect->setPhysics(1.0, 0.63, 0.1);
		rect->setup(this->box2d.getWorld(), ofRandom(ofGetWidth()), ofRandom(ofGetHeight()), this->font_size, this->font_size);

		auto drop_char = dCharacter();
		drop_char.rect = rect;
		drop_char.index = ofRandom(this->words.size());

		this->drop_char_list.push_back(drop_char);
	}
}

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

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

		for (int k = i + 1; k < this->drop_char_list.size(); k++) {

			float distance = this->drop_char_list[i].rect->getPosition().distance(this->drop_char_list[k].rect->getPosition());
			if (distance < 30) {

				this->drop_char_list[i].rect->addForce(this->drop_char_list[i].rect->getPosition() - this->drop_char_list[k].rect->getPosition(), 2.5);
				this->drop_char_list[k].rect->addForce(this->drop_char_list[k].rect->getPosition() - this->drop_char_list[i].rect->getPosition(), 2.5);
			}
		}
	}

	for (auto& drop_char : this->drop_char_list) {

		drop_char.update(this->words);
	}

	this->box2d.update();
}

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

	for (auto& drop_char : this->drop_char_list) {

		ofPushMatrix();
		ofTranslate(drop_char.rect->getPosition().x, drop_char.rect->getPosition().y);
		ofRotate(drop_char.rect->getRotation());

		drop_char.rect->getVelocity().length() > 1.5 ? ofSetColor(239) : ofSetColor(89, 239, 89);
		this->font.drawString(this->words[drop_char.index], -10.5, 10);

		ofPopMatrix();
	}
}

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

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

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#include "ofApp.h"

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

void dCharacter::update(vector<string>& words) {

if (ofGetFrameNum() % 5 && this->rect->getVelocity().length() > 1.5) {

this->index = ofRandom(words.size());

}

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(0);

this->font_size = 25;

ofTrueTypeFontSettings font_settings("fonts/msgothic.ttc", this->font_size);

font_settings.antialiased = true;

font_settings.addRanges(ofAlphabet::Japanese);

this->font.load(font_settings);

this->words = {

u8"!", u8"#", u8"$", u8"%", u8"&",

u8"'", u8"(", u8")", u8"*", u8"+",

u8",", u8"-", u8".", u8"/", u8"0",

u8"1", u8"2", u8"3", u8"4", u8"5",

u8"6", u8"7", u8"8", u8"9", u8"0",

u8":", u8";", u8"<", u8"=", u8">",

u8"?", u8"@",

u8"A", u8"B", u8"C", u8"D", u8"E",

u8"F", u8"G", u8"H", u8"I", u8"J",

u8"K", u8"L", u8"M", u8"N", u8"O",

u8"P", u8"Q", u8"R", u8"S", u8"T",

u8"U", u8"V", u8"W", u8"X", u8"Y", u8"Z",

u8"a", u8"b", u8"c", u8"d", u8"e",

u8"f", u8"g", u8"h", u8"i", u8"j",

u8"k", u8"l", u8"m", u8"n", u8"o",

u8"p", u8"q", u8"r", u8"s", u8"t",

u8"u", u8"v", u8"w", u8"x", u8"y", u8"z",

u8"ｱ", u8"ｲ", u8"ｳ", u8"ｴ", u8"ｵ",

u8"ｶ", u8"ｷ", u8"ｸ", u8"ｹ", u8"ｺ",

u8"ｻ", u8"ｼ", u8"ｽ", u8"ｾ", u8"ｿ",

u8"ﾀ", u8"ﾁ", u8"ﾂ", u8"ﾃ", u8"ﾄ",

u8"ﾅ", u8"ﾆ", u8"ﾇ", u8"ﾈ", u8"ﾉ",

u8"ﾊ", u8"ﾋ", u8"ﾌ", u8"ﾍ", u8"ﾎ",

u8"ﾏ", u8"ﾐ", u8"ﾑ", u8"ﾒ", u8"ﾓ",

u8"ﾔ", u8"ﾕ", u8"ﾖ",

u8"ﾗ", u8"ﾘ", u8"ﾙ", u8"ﾚ", u8"ﾛ",

u8"ﾜ", u8"ｦ", u8"ﾝ",

};

this->box2d.init();

this->box2d.setGravity(0, 0);

this->box2d.createBounds();

this->box2d.setFPS(60);

this->box2d.registerGrabbing();

for (int i = 0; i < 135; i++) {

auto rect = make_shared<ofxBox2dRect>();

rect->setPhysics(1.0, 0.63, 0.1);

rect->setup(this->box2d.getWorld(), ofRandom(ofGetWidth()), ofRandom(ofGetHeight()), this->font_size, this->font_size);

auto drop_char = dCharacter();

drop_char.rect = rect;

drop_char.index = ofRandom(this->words.size());

this->drop_char_list.push_back(drop_char);

}

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

void ofApp::update() {

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

for (int k = i + 1; k < this->drop_char_list.size(); k++) {

float distance = this->drop_char_list[i].rect->getPosition().distance(this->drop_char_list[k].rect->getPosition());

if (distance < 30) {

this->drop_char_list[i].rect->addForce(this->drop_char_list[i].rect->getPosition() - this->drop_char_list[k].rect->getPosition(), 2.5);

this->drop_char_list[k].rect->addForce(this->drop_char_list[k].rect->getPosition() - this->drop_char_list[i].rect->getPosition(), 2.5);

}

for (auto& drop_char : this->drop_char_list) {

drop_char.update(this->words);

}

this->box2d.update();

}

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

void ofApp::draw() {

for (auto& drop_char : this->drop_char_list) {

ofPushMatrix();

ofTranslate(drop_char.rect->getPosition().x, drop_char.rect->getPosition().y);

ofRotate(drop_char.rect->getRotation());

drop_char.rect->getVelocity().length() > 1.5 ? ofSetColor(239) : ofSetColor(89, 239, 89);

this->font.drawString(this->words[drop_char.index], -10.5, 10);

ofPopMatrix();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20200317

[ほしいものリスト]
Amazon

[ Sponsor Link ]

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