Particle – ページ 10 – プログラミング de 落描き

2018年9月29日2018年10月16日

Random walk. openFrameworks

[ Video ]

[ About ]
久々にランダムウォークを見かけたので、自分もやってみる

Random walk.

[ 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(30);
	ofSetWindowTitle("openframeworks");

	ofBackground(239);
	ofSetColor(39);

	for (int i = 0; i < 239; i++) { this->particles.push_back(Particle()); }
}
//--------------------------------------------------------------
void ofApp::update() {

	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(30);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

for (int i = 0; i < 239; i++) { this->particles.push_back(Particle()); }

}

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

void ofApp::update() {

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());

}

#pragma once
#include "ofMain.h"

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

private:

	ofPoint location;
	ofPoint direction;
	ofPoint directions[4];
	std::deque<ofPoint> logs;
};

#pragma once

#include "ofMain.h"

class Particle{

public:

Particle();

~Particle();

void Upate();

void Draw();

private:

ofPoint location;

ofPoint direction;

ofPoint directions[4];

std::deque<ofPoint> logs;

};

#include "Particle.h"

Particle::Particle() {

	int x = (int)(ofRandom(ofGetWidth()) / 20) * 20;
	int y = (int)(ofRandom(ofGetHeight()) / 20) * 20;
	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);
}

Particle::~Particle(){

}

void Particle::Upate() {

	if (ofGetFrameNum() % 20 == 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() > 45) { this->logs.pop_back(); }
}

void Particle::Draw() {

	ofFill();
	ofDrawCircle(this->location, 3);

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

		ofVertex(log);
	}
	ofEndShape();
}

#include "Particle.h"

Particle::Particle() {

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

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

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);

}

Particle::~Particle(){

}

void Particle::Upate() {

if (ofGetFrameNum() % 20 == 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() > 45) { this->logs.pop_back(); }

}

void Particle::Draw() {

ofFill();

ofDrawCircle(this->location, 3);

ofNoFill();

ofBeginShape();

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

ofVertex(log);

}

ofEndShape();

}

[ Link ]
https://github.com/junkiyoshi/Insta20180929

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2018年9月27日2018年9月27日

Particle Flock. openframeworks

[ Video ]

[ About ]
ノイズ由来のパーティクルの群れ。

Particle Flock.

[ Source ]

#pragma once
#include "ofMain.h"

class ofApp : public ofBaseApp {

public:
	void setup();
	void update();
	void draw();

	void keyPressed(int key) {};
	void keyReleased(int key) {};
	void mouseMoved(int x, int y) {};
	void mouseDragged(int x, int y, int button) {};
	void mousePressed(int x, int y, int button) {};
	void mouseReleased(int x, int y, int button) {};
	void 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;
};

#pragma once

#include "ofMain.h"

class ofApp : public ofBaseApp {

public:

void setup();

void update();

void draw();

void keyPressed(int key) {};

void keyReleased(int key) {};

void mouseMoved(int x, int y) {};

void mouseDragged(int x, int y, int button) {};

void mousePressed(int x, int y, int button) {};

void mouseReleased(int x, int y, int button) {};

void 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;

};

#include "ofApp.h"

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

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

	ofBackground(39);
	ofEnableDepthTest();
}

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

	ofSeedRandom(39);
}

//--------------------------------------------------------------
void ofApp::draw() {
	
	this->cam.begin();

	for (int g = 0; g < 8; g++) {

		ofPoint parent_seed = ofPoint(ofRandom(100), ofRandom(100), ofRandom(100));
		vector<ofPoint> parent_log;

		int number_of_child = 30;
		vector<ofPoint> child_seeds;
		vector<ofColor> child_colors;
		vector<vector<ofPoint>> child_logs;
		for (int i = 0; i < number_of_child; i++) {

			ofPoint child_seed = ofPoint(ofRandom(100), ofRandom(100), ofRandom(100));
			child_seeds.push_back(child_seed);

			ofColor child_color;
			child_color.setHsb(ofRandom(255), 200, 255);
			child_colors.push_back(child_color);

			vector<ofPoint> child_log;
			child_logs.push_back(child_log);
		}

		for (int l = 0; l < 30; l++) {

			float x = ofMap(ofNoise(parent_seed.x, (ofGetFrameNum() + l) * 0.005), 0, 1, ofGetWidth() * -0.5, ofGetWidth() * 0.5);
			float y = ofMap(ofNoise(parent_seed.y, (ofGetFrameNum() + l) * 0.005), 0, 1, ofGetHeight() * -0.5, ofGetHeight() * 0.5);
			float z = ofMap(ofNoise(parent_seed.z, (ofGetFrameNum() + l) * 0.005), 0, 1, ofGetWidth() > ofGetHeight() ? ofGetHeight() : ofGetWidth() * -0.5, ofGetWidth() > ofGetHeight() ? ofGetHeight() : ofGetWidth() * 0.5);

			ofPoint parent_point = ofPoint(x, y, z);
			parent_log.push_back(parent_point);

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

				x = ofMap(ofNoise(child_seeds[i].x, (ofGetFrameNum() + l) * 0.005), 0, 1, -50, 50);
				y = ofMap(ofNoise(child_seeds[i].y, (ofGetFrameNum() + l) * 0.005), 0, 1, -50, 50);
				z = ofMap(ofNoise(child_seeds[i].z, (ofGetFrameNum() + l) * 0.005), 0, 1, -50, 50);

				ofPoint child_point = parent_point + ofPoint(x, y, z);
				child_logs[i].push_back(child_point);
			}
		}

		ofSetColor(239);
		ofFill();
		ofDrawSphere(parent_log[parent_log.size() - 1], 10);
		
		for (int i = 0; i < number_of_child; i++) {

			for (int l = 0; l < child_logs[i].size() - 1; l++) {

				ofSetColor(child_colors[i], ofMap(l, 0, child_logs[i].size(), 1, 255));
				ofDrawLine(child_logs[i][l], child_logs[i][l + 1]);
			}

			ofFill();
			ofDrawSphere(child_logs[i][child_logs[i].size() - 1], 5);
		}
	}

	this->cam.end();
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(60);

ofSetWindowTitle("openframeworks");

ofBackground(39);

ofEnableDepthTest();

}

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

void ofApp::update() {

ofSeedRandom(39);

}

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

void ofApp::draw() {

this->cam.begin();

for (int g = 0; g < 8; g++) {

ofPoint parent_seed = ofPoint(ofRandom(100), ofRandom(100), ofRandom(100));

vector<ofPoint> parent_log;

int number_of_child = 30;

vector<ofPoint> child_seeds;

vector<ofColor> child_colors;

vector<vector<ofPoint>> child_logs;

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

ofPoint child_seed = ofPoint(ofRandom(100), ofRandom(100), ofRandom(100));

child_seeds.push_back(child_seed);

ofColor child_color;

child_color.setHsb(ofRandom(255), 200, 255);

child_colors.push_back(child_color);

vector<ofPoint> child_log;

child_logs.push_back(child_log);

}

for (int l = 0; l < 30; l++) {

float x = ofMap(ofNoise(parent_seed.x, (ofGetFrameNum() + l) * 0.005), 0, 1, ofGetWidth() * -0.5, ofGetWidth() * 0.5);

float y = ofMap(ofNoise(parent_seed.y, (ofGetFrameNum() + l) * 0.005), 0, 1, ofGetHeight() * -0.5, ofGetHeight() * 0.5);

float z = ofMap(ofNoise(parent_seed.z, (ofGetFrameNum() + l) * 0.005), 0, 1, ofGetWidth() > ofGetHeight() ? ofGetHeight() : ofGetWidth() * -0.5, ofGetWidth() > ofGetHeight() ? ofGetHeight() : ofGetWidth() * 0.5);

ofPoint parent_point = ofPoint(x, y, z);

parent_log.push_back(parent_point);

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

x = ofMap(ofNoise(child_seeds[i].x, (ofGetFrameNum() + l) * 0.005), 0, 1, -50, 50);

y = ofMap(ofNoise(child_seeds[i].y, (ofGetFrameNum() + l) * 0.005), 0, 1, -50, 50);

z = ofMap(ofNoise(child_seeds[i].z, (ofGetFrameNum() + l) * 0.005), 0, 1, -50, 50);

ofPoint child_point = parent_point + ofPoint(x, y, z);

child_logs[i].push_back(child_point);

}

ofSetColor(239);

ofFill();

ofDrawSphere(parent_log[parent_log.size() - 1], 10);

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

for (int l = 0; l < child_logs[i].size() - 1; l++) {

ofSetColor(child_colors[i], ofMap(l, 0, child_logs[i].size(), 1, 255));

ofDrawLine(child_logs[i][l], child_logs[i][l + 1]);

}

ofFill();

ofDrawSphere(child_logs[i][child_logs[i].size() - 1], 5);

}

this->cam.end();

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180927

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2018年9月24日

Repelling particles. openFrameworks

[ Video ]

[ About ]
反発するカラーパーティクル。速度と透明度をリンク

Repelling particles.

[ 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 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) {};

	ofxBox2d box2d;
	vector<shared_ptr<ofxBox2dCircle>> circles;
	vector<ofColor> colors;
};

#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 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) {};

ofxBox2d box2d;

vector<shared_ptr<ofxBox2dCircle>> circles;

vector<ofColor> colors;

};

#include "ofApp.h"

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

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

	ofBackground(239);
	ofSetColor(39);
	//ofNoFill();
	ofSetLineWidth(1.5);

	this->box2d.init();
	this->box2d.setGravity(0, 0);
	this->box2d.createBounds();
	this->box2d.setFPS(30);
	this->box2d.registerGrabbing();

	for (int i = 0; i < 100; i++) {

		this->circles.push_back(shared_ptr<ofxBox2dCircle>(new ofxBox2dCircle));
		this->circles.back().get()->setPhysics(1.5, 0.5, 0.1);
		this->circles.back().get()->setup(this->box2d.getWorld(), ofRandom(ofGetWidth()), ofRandom(ofGetHeight()), 15);

		ofColor color;
		color.setHsb(ofRandom(255), 255, 255);
		this->colors.push_back(color);
	}
}
//--------------------------------------------------------------
void ofApp::update() {

	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 < 60) {

				this->circles[i]->addForce(this->circles[i]->getPosition() - this->circles[j]->getPosition(), 1.0);
				this->circles[j]->addForce(this->circles[j]->getPosition() - this->circles[i]->getPosition(), 1.0);
			}
		}
	}

	this->box2d.update();
}

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

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

		ofPoint point = ofPoint(this->circles[i]->getPosition().x, this->circles[i]->getPosition().y);

		ofSetColor(this->colors[i], ofMap(this->circles[i]->getVelocity().length(), 1, 10, 0, 255));
		ofDrawCircle(point, 15);
	}
}

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

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

#include "ofApp.h"

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

void ofApp::setup() {

ofSetFrameRate(30);

ofSetWindowTitle("openframeworks");

ofBackground(239);

ofSetColor(39);

//ofNoFill();

ofSetLineWidth(1.5);

this->box2d.init();

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

this->box2d.createBounds();

this->box2d.setFPS(30);

this->box2d.registerGrabbing();

for (int i = 0; i < 100; i++) {

this->circles.push_back(shared_ptr<ofxBox2dCircle>(new ofxBox2dCircle));

this->circles.back().get()->setPhysics(1.5, 0.5, 0.1);

this->circles.back().get()->setup(this->box2d.getWorld(), ofRandom(ofGetWidth()), ofRandom(ofGetHeight()), 15);

ofColor color;

color.setHsb(ofRandom(255), 255, 255);

this->colors.push_back(color);

}

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

void ofApp::update() {

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 < 60) {

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

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

}

this->box2d.update();

}

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

void ofApp::draw() {

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

ofPoint point = ofPoint(this->circles[i]->getPosition().x, this->circles[i]->getPosition().y);

ofSetColor(this->colors[i], ofMap(this->circles[i]->getVelocity().length(), 1, 10, 0, 255));

ofDrawCircle(point, 15);

}

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

int main() {

ofSetupOpenGL(720, 720, OF_WINDOW);

ofRunApp(new ofApp());

}

[ Link ]
https://github.com/junkiyoshi/Insta20180924

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