particlePool.js

// Particle Pool ---------------------------------------------------------

function ParticlePool( poolSize ) {

	this.spriteTextureSignal = TEXTURES.electric;

	this.poolSize = poolSize;
	this.pGeom = new THREE.Geometry();
	this.particles = this.pGeom.vertices;

	this.offScreenPos = new THREE.Vector3( 9999, 9999, 9999 );

	this.pColor = '#00ffff';
	this.pSize = 0.6;

	for ( var ii = 0; ii < this.poolSize; ii++ ) {
		this.particles[ ii ] = new Particle( this );
	}

	this.meshComponents = new THREE.Object3D();

	// inner particle
	this.pMat = new THREE.PointCloudMaterial( {
		map: this.spriteTextureSignal,
		size: this.pSize,
		color: this.pColor,
		blending: THREE.AdditiveBlending,
		depthTest: false,
		transparent: true
	} );

	this.pMesh = new THREE.PointCloud( this.pGeom, this.pMat );
	this.pMesh.frustumCulled = false;

	this.meshComponents.add( this.pMesh );


	// outer particle glow
	this.pMat_outer = this.pMat.clone();
	this.pMat_outer.size = this.pSize * 10;
	this.pMat_outer.opacity = 0.04;

	this.pMesh_outer = new THREE.PointCloud( this.pGeom, this.pMat_outer );
	this.pMesh_outer.frustumCulled = false;

	this.meshComponents.add( this.pMesh_outer );

}

ParticlePool.prototype.getAvgExecutionTime = function () {
	return this.profTime / this.itt;
};

ParticlePool.prototype.getParticle = function () {

	for ( var ii = 0; ii < this.poolSize; ii++ ) {
		var p = this.particles[ ii ];
		if ( p.available ) {
			this.lastAvailableIdx = ii;
			p.available = false;
			return p;
		}
	}

	console.error( "ParticlePool.prototype.getParticle return null" );
	return null;

};

ParticlePool.prototype.update = function () {

	this.pGeom.verticesNeedUpdate = true;

};

ParticlePool.prototype.updateSettings = function () {

	// inner particle
	this.pMat.color.setStyle( this.pColor );
	this.pMat.size = this.pSize;
	// outer particle
	this.pMat_outer.color.setStyle( this.pColor );
	this.pMat_outer.size = this.pSize * 10;

};