113 lines
2.0 KiB
JavaScript
113 lines
2.0 KiB
JavaScript
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import Node, { addNodeClass } from '../core/Node.js';
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import { vectorComponents } from '../core/constants.js';
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const stringVectorComponents = vectorComponents.join( '' );
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class SplitNode extends Node {
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constructor( node, components = 'x' ) {
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super();
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this.node = node;
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this.components = components;
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this.isSplitNode = true;
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}
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getVectorLength() {
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let vectorLength = this.components.length;
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for ( const c of this.components ) {
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vectorLength = Math.max( vectorComponents.indexOf( c ) + 1, vectorLength );
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}
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return vectorLength;
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}
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getComponentType( builder ) {
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return builder.getComponentType( this.node.getNodeType( builder ) );
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}
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getNodeType( builder ) {
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return builder.getTypeFromLength( this.components.length, this.getComponentType( builder ) );
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}
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generate( builder, output ) {
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const node = this.node;
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const nodeTypeLength = builder.getTypeLength( node.getNodeType( builder ) );
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let snippet = null;
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if ( nodeTypeLength > 1 ) {
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let type = null;
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const componentsLength = this.getVectorLength();
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if ( componentsLength >= nodeTypeLength ) {
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// needed expand the input node
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type = builder.getTypeFromLength( this.getVectorLength(), this.getComponentType( builder ) );
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}
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const nodeSnippet = node.build( builder, type );
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if ( this.components.length === nodeTypeLength && this.components === stringVectorComponents.slice( 0, this.components.length ) ) {
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// unnecessary swizzle
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snippet = builder.format( nodeSnippet, type, output );
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} else {
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snippet = builder.format( `${nodeSnippet}.${this.components}`, this.getNodeType( builder ), output );
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}
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} else {
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// ignore .components if .node returns float/integer
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snippet = node.build( builder, output );
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}
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return snippet;
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}
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serialize( data ) {
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super.serialize( data );
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data.components = this.components;
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}
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deserialize( data ) {
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super.deserialize( data );
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this.components = data.components;
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}
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}
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export default SplitNode;
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addNodeClass( 'SplitNode', SplitNode );
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