Particle – ページ 9 – プログラミング de 落描き

2018年12月14日2018年12月14日

Force field. openFrameworks

[ Video ]

[ About ]
中央の力場で右往左往するパーティクル

Particle move by force field.

[ 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) {};

	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dCircle>> circles;
	vector<ofColor> circles_color;
	vector<deque<ofPoint>> circles_log;
};

#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) {};

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dCircle>> circles;

vector<ofColor> circles_color;

vector<deque<ofPoint>> circles_log;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetLineWidth(3);

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

	for (int i = 0; i < 25; i++) {

		auto circle = make_shared<ofxBox2dCircle>();
		circle.get()->setPhysics(0.5, 1.0, 1.0);
		circle.get()->setup(this->box2d.getWorld(), ofRandom(0, ofGetWidth()), ofRandom(0, ofGetHeight()), 8);
		this->circles.push_back(move(circle));

		ofColor c;
		c.setHsb(i * 10, 255, 230);
		this->circles_color.push_back(c);

		deque<ofPoint> log;
		this->circles_log.push_back(log);
	}
}

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

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

		int span = 30;
		for (int x = ofGetWidth() * 0.2; x <= ofGetWidth() * 0.8; x += span) {

			for (int y = ofGetHeight() * 0.2; y <= ofGetHeight() * 0.8; y += span) {

				if ((this->circles[i]->getPosition().x > x - span * 0.5 && this->circles[i]->getPosition().x < x + span * 0.5) &&
					(this->circles[i]->getPosition().y > y - span * 0.5 && this->circles[i]->getPosition().y < y + span * 0.5))
				{
					float noise_deg = ofNoise(x * 0.0005, y * 0.0005, ofGetFrameNum() * 0.01) * 360;
					ofPoint power = ofPoint(cos(noise_deg * DEG_TO_RAD), sin(noise_deg * DEG_TO_RAD));
					this->circles[i]->addForce(power, 1.0);
				}
			}
		}
	}

	this->box2d.update();

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

		this->circles_log[i].push_front(this->circles[i]->getPosition());
		while (this->circles_log[i].size() > 10) {

			this->circles_log[i].pop_back();
		}
	}
}

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

	ofFill();
	ofSetColor(39);

	int span = 30;
	for (int x = ofGetWidth() * 0.2; x <= ofGetWidth() * 0.8; x += span) {

		for (int y = ofGetHeight() * 0.2; y <= ofGetHeight() * 0.8; y += span) {

			float noise_deg = ofNoise(x * 0.0005, y * 0.0005, ofGetFrameNum() * 0.01) * 360;

			ofBeginShape();
			ofVertex((x + span * 0.5) + span * 0.35 * cos(noise_deg * DEG_TO_RAD), (y + span * 0.5) + span * 0.35 * sin(noise_deg * DEG_TO_RAD));
			ofVertex((x + span * 0.5) + span * 0.35 * cos((noise_deg + 135) * DEG_TO_RAD), (y + span * 0.5) + span * 0.35 * sin((noise_deg + 135) * DEG_TO_RAD));
			ofVertex((x + span * 0.5) + span * 0.35 * cos((noise_deg + 225) * DEG_TO_RAD), (y + span * 0.5) + span * 0.35 * sin((noise_deg + 225) * DEG_TO_RAD));
			ofEndShape(true);
		}
	}

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

		ofFill();
		ofSetColor(this->circles_color[i]);
		ofDrawCircle(this->circles[i]->getPosition(), this->circles[i]->getRadius());

		ofNoFill();
		ofBeginShape();
		for (int log_index = 0; log_index < this->circles_log[i].size(); log_index++) {

			ofVertex(this->circles_log[i][log_index]);
		}
		ofEndShape(false);
	}
}

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

ofSetLineWidth(3);

this->box2d.init();

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

this->box2d.createBounds();

this->box2d.setFPS(60);

for (int i = 0; i < 25; i++) {

auto circle = make_shared<ofxBox2dCircle>();

circle.get()->setPhysics(0.5, 1.0, 1.0);

circle.get()->setup(this->box2d.getWorld(), ofRandom(0, ofGetWidth()), ofRandom(0, ofGetHeight()), 8);

this->circles.push_back(move(circle));

ofColor c;

c.setHsb(i * 10, 255, 230);

this->circles_color.push_back(c);

deque<ofPoint> log;

this->circles_log.push_back(log);

}

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

void ofApp::update() {

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

int span = 30;

for (int x = ofGetWidth() * 0.2; x <= ofGetWidth() * 0.8; x += span) {

for (int y = ofGetHeight() * 0.2; y <= ofGetHeight() * 0.8; y += span) {

if ((this->circles[i]->getPosition().x > x - span * 0.5 && this->circles[i]->getPosition().x < x + span * 0.5) &&

(this->circles[i]->getPosition().y > y - span * 0.5 && this->circles[i]->getPosition().y < y + span * 0.5))

{

float noise_deg = ofNoise(x * 0.0005, y * 0.0005, ofGetFrameNum() * 0.01) * 360;

ofPoint power = ofPoint(cos(noise_deg * DEG_TO_RAD), sin(noise_deg * DEG_TO_RAD));

this->circles[i]->addForce(power, 1.0);

}

this->box2d.update();

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

this->circles_log[i].push_front(this->circles[i]->getPosition());

while (this->circles_log[i].size() > 10) {

this->circles_log[i].pop_back();

}

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

void ofApp::draw() {

ofFill();

ofSetColor(39);

int span = 30;

for (int x = ofGetWidth() * 0.2; x <= ofGetWidth() * 0.8; x += span) {

for (int y = ofGetHeight() * 0.2; y <= ofGetHeight() * 0.8; y += span) {

float noise_deg = ofNoise(x * 0.0005, y * 0.0005, ofGetFrameNum() * 0.01) * 360;

ofBeginShape();

ofVertex((x + span * 0.5) + span * 0.35 * cos(noise_deg * DEG_TO_RAD), (y + span * 0.5) + span * 0.35 * sin(noise_deg * DEG_TO_RAD));

ofVertex((x + span * 0.5) + span * 0.35 * cos((noise_deg + 135) * DEG_TO_RAD), (y + span * 0.5) + span * 0.35 * sin((noise_deg + 135) * DEG_TO_RAD));

ofVertex((x + span * 0.5) + span * 0.35 * cos((noise_deg + 225) * DEG_TO_RAD), (y + span * 0.5) + span * 0.35 * sin((noise_deg + 225) * DEG_TO_RAD));

ofEndShape(true);

}

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

ofFill();

ofSetColor(this->circles_color[i]);

ofDrawCircle(this->circles[i]->getPosition(), this->circles[i]->getRadius());

ofNoFill();

ofBeginShape();

for (int log_index = 0; log_index < this->circles_log[i].size(); log_index++) {

ofVertex(this->circles_log[i][log_index]);

}

ofEndShape(false);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

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2018年10月29日2018年10月28日

Rnadom walk add Lifespan. openframeworks

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[ About ]
ランダムウォークに寿命を付加。寿命と透明度がリンクしており、寿命を迎えるとウォーカーは消えます

Random walk add Lifespan.

[ Source ]

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

	vector<Particle> particles;
};

#pragma once

#include "ofMain.h"

#include "Particle.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) {};

vector<Particle> particles;

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);
	ofSetLineWidth(1.5);

	for (int i = 0; i < 10; i++) { this->particles.push_back(Particle()); }
}
//--------------------------------------------------------------
void ofApp::update() {

	if (ofRandom(100) < 25) {

		this->particles.push_back(Particle());
	}

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

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

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

	for (Particle& particle : particles) { particle.Upate(); }
}

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

	for (Particle& particle : particles) { particle.Draw(); }
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(39);

ofEnableBlendMode(ofBlendMode::OF_BLENDMODE_ADD);

ofSetLineWidth(1.5);

for (int i = 0; i < 10; i++) { this->particles.push_back(Particle()); }

}

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

void ofApp::update() {

if (ofRandom(100) < 25) {

this->particles.push_back(Particle());

}

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

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

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

}

for (Particle& particle : particles) { particle.Upate(); }

}

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

void ofApp::draw() {

for (Particle& particle : particles) { particle.Draw(); }

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#include "Particle.h"

Particle::Particle() {

	int x = (int)(ofRandom(ofGetWidth()) / 40) * 40;
	int y = (int)(ofRandom(ofGetHeight()) / 40) * 40;
	this->location = ofPoint(x, y);

	this->directions[0] = ofPoint(1, 0);
	this->directions[1] = ofPoint(-1, 0);
	this->directions[2] = ofPoint(0, 1);
	this->directions[3] = ofPoint(0, -1);

	this->color.setHsb(ofRandom(255), 230, 255);
	this->life = 255;
}

Particle::~Particle() {

}

void Particle::Upate() {

	if (ofGetFrameNum() % 40 == 0) {

		int r = ofRandom(4);
		this->direction = this->directions[r];

		if (this->location.x < 0) { this->direction = ofPoint(1, 0); }
		else if (this->location.x > ofGetWidth()) { this->direction = ofPoint(-1, 0); }

		if (this->location.y < 0) { this->direction = ofPoint(0, 1); }
		else if (this->location.y > ofGetHeight()) { this->direction = ofPoint(0, -1); }
	}

	this->location += this->direction * 2;
	this->logs.push_front(location);
	while (this->logs.size() > 60) { this->logs.pop_back(); }

	this->life -= 1;
}

void Particle::Draw() {

	ofSetColor(this->color, this->life);

	ofFill();
	ofDrawCircle(this->location, 8);

	ofNoFill();
	ofBeginShape();
	for (ofPoint& log : this->logs) {

		ofVertex(log);
	}
	ofEndShape();
}

bool Particle::IsDead() {

	return this->life < 0 ? true : false;
}

#include "Particle.h"

Particle::Particle() {

int x = (int)(ofRandom(ofGetWidth()) / 40) * 40;

int y = (int)(ofRandom(ofGetHeight()) / 40) * 40;

this->location = ofPoint(x, y);

this->directions[0] = ofPoint(1, 0);

this->directions[1] = ofPoint(-1, 0);

this->directions[2] = ofPoint(0, 1);

this->directions[3] = ofPoint(0, -1);

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

this->life = 255;

}

Particle::~Particle() {

}

void Particle::Upate() {

if (ofGetFrameNum() % 40 == 0) {

int r = ofRandom(4);

this->direction = this->directions[r];

if (this->location.x < 0) { this->direction = ofPoint(1, 0); }

else if (this->location.x > ofGetWidth()) { this->direction = ofPoint(-1, 0); }

if (this->location.y < 0) { this->direction = ofPoint(0, 1); }

else if (this->location.y > ofGetHeight()) { this->direction = ofPoint(0, -1); }

}

this->location += this->direction * 2;

this->logs.push_front(location);

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

this->life -= 1;

}

void Particle::Draw() {

ofSetColor(this->color, this->life);

ofFill();

ofDrawCircle(this->location, 8);

ofNoFill();

ofBeginShape();

for (ofPoint& log : this->logs) {

ofVertex(log);

}

ofEndShape();

}

bool Particle::IsDead() {

return this->life < 0 ? true : false;

}

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2018年9月30日2018年10月16日

Random walk 3D. openFrameworks

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[ About ]
昨日のランダムウォークにZ軸を加えて3Dに

Random walk 3D.

[ Source ]

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

	ofEasyCam cam;
	vector<Particle> particles;
};

#pragma once

#include "ofMain.h"

#include "Particle.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) {};

ofEasyCam cam;

vector<Particle> particles;

};

#include "ofApp.h"

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

	ofSetFrameRate(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(39);
	ofSetColor(239);
	ofEnableDepthTest();

	for (int i = 0; i < 128; i++) { this->particles.push_back(Particle()); }
}
//--------------------------------------------------------------
void ofApp::update() {

	for (Particle& particle : particles) { particle.Upate(); }
}

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

	this->cam.begin();
	ofRotateY(ofGetFrameNum() * 0.5);

	for (Particle& particle : particles) { particle.Draw(); }

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(39);

ofSetColor(239);

ofEnableDepthTest();

for (int i = 0; i < 128; i++) { this->particles.push_back(Particle()); }

}

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

void ofApp::update() {

for (Particle& particle : particles) { particle.Upate(); }

}

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

void ofApp::draw() {

this->cam.begin();

ofRotateY(ofGetFrameNum() * 0.5);

for (Particle& particle : particles) { particle.Draw(); }

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

#pragma once
#include "ofMain.h"

class Particle{
public:
	Particle();
	~Particle();
	void Upate();
	void Draw();

private:

	int depth;

	ofPoint location;
	ofPoint direction;
	ofPoint directions[6];
	std::deque<ofPoint> logs;
};

#pragma once

#include "ofMain.h"

class Particle{

public:

Particle();

~Particle();

void Upate();

void Draw();

private:

int depth;

ofPoint location;

ofPoint direction;

ofPoint directions[6];

std::deque<ofPoint> logs;

};

#include "Particle.h"

Particle::Particle() {

	this->depth = ofGetWidth() > ofGetHeight() ? ofGetWidth() : ofGetHeight();

	int x = (int)(ofRandom(ofGetWidth()) / 20) * 20;
	int y = (int)(ofRandom(ofGetHeight()) / 20) * 20;
	int z = (int)(ofRandom(this->depth) / 20) * 20;
	this->location = ofPoint(x, y, z);

	this->directions[0] = ofPoint(1, 0, 0);
	this->directions[1] = ofPoint(-1, 0, 0);
	this->directions[2] = ofPoint(0, 1, 0);
	this->directions[3] = ofPoint(0, -1, 0);
	this->directions[4] = ofPoint(0, 0, 1);
	this->directions[5] = ofPoint(0, 0, -1);
}

Particle::~Particle(){

}

void Particle::Upate() {

	if (ofGetFrameNum() % 20 == 0) {

		int r = ofRandom(6);
		this->direction = this->directions[r];

		if (this->location.x < 0) { this->direction = this->directions[0]; }
		else if (this->location.x > ofGetWidth()) { this->direction = this->directions[1]; }

		if (this->location.y < 0) { this->direction = this->directions[2]; }
		else if (this->location.y > ofGetHeight()) { this->direction = this->directions[3]; }

		if (this->location.z < 0) { this->direction = this->directions[4]; }
		else if (this->direction.z > this->depth) { this->direction = this->directions[5]; }
	}

	this->location += this->direction * 2;

	this->logs.push_front(location - ofPoint(ofGetWidth() * 0.5, ofGetHeight() * 0.5, this->depth * 0.5));
	while (this->logs.size() > 90) { this->logs.pop_back(); }
}

void Particle::Draw() {

	ofFill();
	ofDrawSphere(this->logs.front(), 3);

	ofNoFill();
	ofBeginShape();
	for (ofPoint& log : this->logs) {

		ofVertex(log);
	}
	ofEndShape();
}

#include "Particle.h"

Particle::Particle() {

this->depth = ofGetWidth() > ofGetHeight() ? ofGetWidth() : ofGetHeight();

int x = (int)(ofRandom(ofGetWidth()) / 20) * 20;

int y = (int)(ofRandom(ofGetHeight()) / 20) * 20;

int z = (int)(ofRandom(this->depth) / 20) * 20;

this->location = ofPoint(x, y, z);

this->directions[0] = ofPoint(1, 0, 0);

this->directions[1] = ofPoint(-1, 0, 0);

this->directions[2] = ofPoint(0, 1, 0);

this->directions[3] = ofPoint(0, -1, 0);

this->directions[4] = ofPoint(0, 0, 1);

this->directions[5] = ofPoint(0, 0, -1);

}

Particle::~Particle(){

}

void Particle::Upate() {

if (ofGetFrameNum() % 20 == 0) {

int r = ofRandom(6);

this->direction = this->directions[r];

if (this->location.x < 0) { this->direction = this->directions[0]; }

else if (this->location.x > ofGetWidth()) { this->direction = this->directions[1]; }

if (this->location.y < 0) { this->direction = this->directions[2]; }

else if (this->location.y > ofGetHeight()) { this->direction = this->directions[3]; }

if (this->location.z < 0) { this->direction = this->directions[4]; }

else if (this->direction.z > this->depth) { this->direction = this->directions[5]; }

}

this->location += this->direction * 2;

this->logs.push_front(location - ofPoint(ofGetWidth() * 0.5, ofGetHeight() * 0.5, this->depth * 0.5));

while (this->logs.size() > 90) { this->logs.pop_back(); }

}

void Particle::Draw() {

ofFill();

ofDrawSphere(this->logs.front(), 3);

ofNoFill();

ofBeginShape();

for (ofPoint& log : this->logs) {

ofVertex(log);

}

ofEndShape();

}

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