var createTexture = function ( size ) {
var texture = new Texture();
texture.setTextureSize( size.width, size.height );
texture.setMinFilter( 'LINEAR' );
texture.setMagFilter( 'LINEAR' );
return texture;
};
var createTextureRtt = function ( rttSize ) {
var rttTexture = new Texture();
rttTexture.setTextureSize( rttSize[ 0 ], rttSize[ 1 ] );
rttTexture.setMinFilter( 'LINEAR' );
rttTexture.setMagFilter( 'LINEAR' );
return rttTexture;
};
_createTexture: function(name, divisor, type, filter) {
var texture = new Texture();
texture.setTextureSize(1, 1);
texture.setInternalFormatType(type);
// not always necessary to have 4 channels, might be interesting to set it in pass
texture.setInternalFormat(Texture.RGBA);
texture.setMinFilter(filter);
texture.setMagFilter(filter);
texture.divisor = divisor;
texture.setName(name);
return texture;
},
drawText: function () {
if ( this._geometry !== undefined ) {
this._matrixTransform.removeChild( this._geometry );
// The text could be dynamic, so we need to remove GL objects
this._geometry.releaseGLObjects();
}
if ( !this._text ) return;
this.setTextProperties();
this._canvas.width = this._context.measureText( this._text ).width;
this._canvas.height = this._fontSize * 2;
// For devices not supporting NPOT textures
if ( this._forcePowerOfTwo ) {
this._canvas.width = this._nextPowerOfTwo( this._canvas.width );
this._canvas.height = this._nextPowerOfTwo( this._canvas.height );
}
// We need to set the text properties again, as the canvas size cold change.
this.setTextProperties();
this._context.clearRect( 0, 0, this._canvas.width, this._canvas.height );
this._context.fillText( this._text, this._textX, this._textY );
// Right now we set the pivot point to center, to assure the bounding box is correct when rendering billboards.
// TODO: Possibility to set different pivot point so we can have missing alignments.
var aspectRatio = this._canvas.width / this._canvas.height;
var quadWidth = this._charactherSize * aspectRatio;
this._geometry = Shape.createTexturedQuadGeometry( -quadWidth / 2, -this._charactherSize / 2, 0, quadWidth, 0, 0, 0, this._charactherSize, 0 );
// create a texture to attach the canvas2D
var texture = new Texture();
texture.setTextureSize( this._canvas.width, this._canvas.height );
texture.setMinFilter( 'LINEAR' );
texture.setMagFilter( 'LINEAR' );
texture.setImage( this._canvas );
// Transparency stuff
var stateset = this._geometry.getOrCreateStateSet();
stateset.setTextureAttributeAndModes( 0, texture );
stateset.setRenderingHint( 'TRANSPARENT_BIN' );
stateset.setAttributeAndModes( new BlendFunc( BlendFunc.ONE, BlendFunc.ONE_MINUS_SRC_ALPHA ) );
this._matrixTransform.addChild( this._geometry );
this.dirtyBound();
},