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/**
* @author sunag / http://www.sunag.com.br/
*/
import { InputNode } from '../core/InputNode.js';
import { UVNode } from '../accessors/UVNode.js';
import { ColorSpaceNode } from '../utils/ColorSpaceNode.js';
function TextureNode( value, uv, bias, project ) {
InputNode.call( this, 'v4', { shared: true } );
this.value = value;
this.uv = uv || new UVNode();
this.bias = bias;
this.project = project !== undefined ? project : false;
}
TextureNode.prototype = Object.create( InputNode.prototype );
TextureNode.prototype.constructor = TextureNode;
TextureNode.prototype.nodeType = "Texture";
TextureNode.prototype.getTexture = function ( builder, output ) {
return InputNode.prototype.generate.call( this, builder, output, this.value.uuid, 't' );
};
TextureNode.prototype.generate = function ( builder, output ) {
if ( output === 'sampler2D' ) {
return this.getTexture( builder, output );
}
var tex = this.getTexture( builder, output ),
uv = this.uv.build( builder, this.project ? 'v4' : 'v2' ),
bias = this.bias ? this.bias.build( builder, 'f' ) : undefined;
if ( bias == undefined && builder.context.bias ) {
bias = new builder.context.bias( this ).build( builder, 'f' );
}
var method, code;
if ( this.project ) method = 'texture2DProj';
else method = bias ? 'tex2DBias' : 'tex2D';
if ( bias ) code = method + '( ' + tex + ', ' + uv + ', ' + bias + ' )';
else code = method + '( ' + tex + ', ' + uv + ' )';
// add this context to replace ColorSpaceNode.input to code
builder.addContext( { input: code, encoding: builder.getTextureEncodingFromMap( this.value ), include: builder.isShader( 'vertex' ) } );
this.colorSpace = this.colorSpace || new ColorSpaceNode( this );
code = this.colorSpace.build( builder, this.type );
builder.removeContext();
return builder.format( code, this.type, output );
};
TextureNode.prototype.copy = function ( source ) {
InputNode.prototype.copy.call( this, source );
if ( source.value ) this.value = source.value;
this.uv = source.uv;
if ( source.bias ) this.bias = source.bias;
if ( source.project !== undefined ) this.project = source.project;
};
TextureNode.prototype.toJSON = function ( meta ) {
var data = this.getJSONNode( meta );
if ( ! data ) {
data = this.createJSONNode( meta );
if ( this.value ) data.value = this.value.uuid;
data.uv = this.uv.toJSON( meta ).uuid;
data.project = this.project;
if ( this.bias ) data.bias = this.bias.toJSON( meta ).uuid;
}
return data;
};
export { TextureNode };
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