webvadersgl/lightSources.js at master · nmssilva/webvadersgl · GitHub

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//////////////////////////////////////////////////////////////////////////////
//
//  A class for instantiating light sources.
//
//  J. Madeira - Oct. 2015
//
//////////////////////////////////////////////////////////////////////////////

//----------------------------------------------------------------------------
//
//  Constructor
//

function LightSource( ) {

	// A new light source is always on

	this.isOn = true;

	// And is directional

	this.position = [ 0.0, 0.0, 1.0, 0.0 ];

	// White light

	this.intensity = [ 1.0, 1.0, 1.0 ];

	// Ambient component

	this.ambientIntensity = [ 0.2, 0.2, 0.2 ];

	// Animation controls

	this.rotXXOn = false;

	this.rotYYOn = false;

	this.rotZZOn = false;

	// Rotation angles

	this.rotAngleXX = 0.0;

	this.rotAngleYY = 0.0;

	this.rotAngleZZ = 0.0;
}

//----------------------------------------------------------------------------
//
//  Methods
//

LightSource.prototype.isOff = function() {

	return this.isOn == false;
}

LightSource.prototype.switchOn = function() {

	this.isOn = true;
}

LightSource.prototype.switchOff = function() {

	this.isOn = false;
}

LightSource.prototype.isDirectional = function() {

	return this.position[3] == 0.0;
}

LightSource.prototype.getPosition = function() {

	return this.position;
}

LightSource.prototype.setPosition = function( x, y, z, w ) {

	this.position[0] = x;

	this.position[1] = y;

	this.position[2] = z;

	this.position[3] = w;
}

LightSource.prototype.getIntensity = function() {

	return this.intensity;
}

LightSource.prototype.setIntensity = function( r, g, b ) {

	this.intensity[0] = r;

	this.intensity[1] = g;

	this.intensity[2] = b;
}

LightSource.prototype.getAmbIntensity = function() {

	return this.ambientIntensity;
}

LightSource.prototype.setAmbIntensity = function( r, g, b ) {

	this.ambientIntensity[0] = r;

	this.ambientIntensity[1] = g;

	this.ambientIntensity[2] = b;
}

LightSource.prototype.isRotYYOn = function() {

	return this.rotYYOn;
}

LightSource.prototype.switchRotYYOn = function() {

	this.rotYYOn = true;
}

LightSource.prototype.switchRotYYOff = function() {

	this.rotYYOn = false;
}

LightSource.prototype.getRotAngleYY = function() {

	return this.rotAngleYY;
}

LightSource.prototype.setRotAngleYY = function( angle) {

	this.rotAngleYY = angle;
}

// COMPLETE THE MISSING METHODS !!


//----------------------------------------------------------------------------
//
//  Instantiating light sources
//

var lightSources = [];

// Light source 0

lightSources.push( new LightSource() );

lightSources[0].setPosition( 0.0, 0.0, 1.0, 0.0 );

lightSources[0].setIntensity( 1.0, 1.0, 1.0 );

lightSources[0].setAmbIntensity( 0.2, 0.2, 0.2 );