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96 lines
1.7 KiB
96 lines
1.7 KiB
import Node, { addNodeClass } from '../core/Node.js';
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import { nodeProxy } from '../shadernode/ShaderNode.js';
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class FunctionOverloadingNode extends Node {
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constructor( functionNodes = [], ...parametersNodes ) {
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super();
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this.functionNodes = functionNodes;
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this.parametersNodes = parametersNodes;
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this._candidateFnCall = null;
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}
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getNodeType() {
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return this.functionNodes[ 0 ].shaderNode.layout.type;
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}
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setup( builder ) {
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const params = this.parametersNodes;
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let candidateFnCall = this._candidateFnCall;
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if ( candidateFnCall === null ) {
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let candidateFn = null;
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let candidateScore = - 1;
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for ( const functionNode of this.functionNodes ) {
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const shaderNode = functionNode.shaderNode;
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const layout = shaderNode.layout;
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if ( layout === null ) {
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throw new Error( 'FunctionOverloadingNode: FunctionNode must be a layout.' );
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}
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const inputs = layout.inputs;
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if ( params.length === inputs.length ) {
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let score = 0;
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for ( let i = 0; i < params.length; i ++ ) {
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const param = params[ i ];
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const input = inputs[ i ];
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if ( param.getNodeType( builder ) === input.type ) {
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score ++;
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} else {
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score = 0;
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}
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}
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if ( score > candidateScore ) {
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candidateFn = functionNode;
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candidateScore = score;
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}
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}
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}
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this._candidateFnCall = candidateFnCall = candidateFn( ...params );
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}
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return candidateFnCall;
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}
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}
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export default FunctionOverloadingNode;
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const overloadingBaseFn = nodeProxy( FunctionOverloadingNode );
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export const overloadingFn = ( functionNodes ) => ( ...params ) => overloadingBaseFn( functionNodes, ...params );
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addNodeClass( 'FunctionOverloadingNode', FunctionOverloadingNode );
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