autowatch = 1;
outlets = 2;

var myWindow = new JitterObject("jit.window", "js");
myWindow.floating = 0;
myWindow.size = [640, 480];
myWindow.fsaa = 1;
myWindow.pos = [10, 50];
myWindow.depthbuffer = 0;

var myRender = new JitterObject("jit.gl.render", "js");
myRender.erase_color = [0, 0, 0, 0.1];
myRender.blend_enable = 1;

var mySketch = new JitterObject("jit.gl.sketch", "js");
mySketch.blend_enable = 1;

var image_out = new JitterObject("jit.gl.asyncread", "js");
image_out.automatic = 1;

var Vector = {
	x: 0.0,
	y: 0.0,
	z: 0.0,

	add: function(Vector) {
		this.x += Vector.x;
		this.y += Vector.y;
		this.z += Vector.z;
	}  
};


function Particle(x, y) {
	this.location = Object.create(Vector);
	this.velocity = Object.create(Vector);
	this.acceleration = Object.create(Vector);
	this.gravity = Object.create(Vector); 
	this.color = Object.create(Vector); 
	this.location.y = y;
	this.location.x = x;
	this.gravity.y = -0.000;
	this.acceleration.y = (Math.random()*2 - 1)/3000.0;
	this.velocity.x = (Math.random()*2 - 1) / 120.0;
	this.velocity.y = (Math.random()*2 - 1) / 200.0;
	this.color.x = Math.random()*0.73;
	this.color.y = Math.random()*0.77;
	this.color.z = 1.0;
	this.lifespan = 255;		
}; 

Particle.prototype.update = function() {
	this.velocity.add(this.acceleration);
	this.velocity.add(this.gravity);
	this.location.add(this.velocity);
	this.lifespan -= 2;
};

Particle.prototype.display = function() {
	mySketch.moveto(this.location.x, this.location.y, this.location.z);
	var alpha = this.lifespan / 255.0;
	mySketch.glcolor(this.color.x, this.color.y, this.color.z, alpha);
	mySketch.circle(this.lifespan * 0.000077);
	if(this.location.y > 0.85 || this.location.y < -0.85){
		this.lifespan = 0.0;
	}
};

Particle.prototype.getPos = function() {
	return this.location;
};

Particle.prototype.run = function() {
	this.update();
	this.display();
}

Particle.prototype.isDead = function() {
	if(this.lifespan <= 0.0) {
		return true;
	} else {
		return false;
	}
};

// Particles Array
var pArray = [];
var maximum = 5000;

function maxParticle(m){
	maximum = m;
}

function createParticle(x, y) {
	pArray.push(new Particle(x, y));
}


function bang() {
	var matrix = new JitterMatrix("noisemat");	// defined in max patch
	for(i=0; i<7; i++) {
		for(j=0; j<12; j++) {
			var val = matrix.getcell(j, i);
			matrix.setcell(j,i,"val",val[0],val[1],val[2],val[3]);
		}
	}
	outlet(1,"jit_matrix",matrix.name);	
	
	for(var i = pArray.length-1; i >= 0; i--) {
		pArray[i].run();
		
		if(pArray[i].isDead()) {
			pArray.splice(i, 1);
		}
		if(pArray.length > maximum){
			pArray.splice(i, 1);
		}
	}
		
	myRender.erase();
	myRender.drawswap();
	mySketch.reset();
}