161 lines
2.9 KiB
JavaScript
161 lines
2.9 KiB
JavaScript
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import Node, { addNodeClass } from '../core/Node.js';
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import { NodeUpdateType } from '../core/constants.js';
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import { uniform } from '../core/UniformNode.js';
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import { texture } from './TextureNode.js';
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import { buffer } from './BufferNode.js';
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import { nodeObject } from '../shadernode/ShaderNode.js';
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import { uniforms } from './UniformsNode.js';
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import ArrayElementNode from '../utils/ArrayElementNode.js';
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class ReferenceElementNode extends ArrayElementNode {
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constructor( referenceNode, indexNode ) {
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super( referenceNode, indexNode );
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this.referenceNode = referenceNode;
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this.isReferenceElementNode = true;
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}
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getNodeType() {
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return this.referenceNode.uniformType;
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}
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generate( builder ) {
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const snippet = super.generate( builder );
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const arrayType = this.referenceNode.getNodeType();
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const elementType = this.getNodeType();
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return builder.format( snippet, arrayType, elementType );
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}
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}
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class ReferenceNode extends Node {
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constructor( property, uniformType, object = null, count = null ) {
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super();
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this.property = property;
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this.uniformType = uniformType;
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this.object = object;
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this.count = count;
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this.properties = property.split( '.' );
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this.reference = null;
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this.node = null;
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this.updateType = NodeUpdateType.OBJECT;
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}
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element( indexNode ) {
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return nodeObject( new ReferenceElementNode( this, nodeObject( indexNode ) ) );
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}
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setNodeType( uniformType ) {
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let node = null;
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if ( this.count !== null ) {
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node = buffer( null, uniformType, this.count );
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} else if ( Array.isArray( this.getValueFromReference() ) ) {
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node = uniforms( null, uniformType );
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} else if ( uniformType === 'texture' ) {
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node = texture( null );
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} else {
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node = uniform( null, uniformType );
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}
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this.node = node;
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}
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getNodeType( builder ) {
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return this.node.getNodeType( builder );
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}
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getValueFromReference( object = this.reference ) {
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const { properties } = this;
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let value = object[ properties[ 0 ] ];
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for ( let i = 1; i < properties.length; i ++ ) {
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value = value[ properties[ i ] ];
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}
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return value;
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}
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updateReference( state ) {
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this.reference = this.object !== null ? this.object : state.object;
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return this.reference;
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}
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setup() {
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this.updateValue();
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return this.node;
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}
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update( /*frame*/ ) {
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this.updateValue();
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}
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updateValue() {
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if ( this.node === null ) this.setNodeType( this.uniformType );
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const value = this.getValueFromReference();
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if ( Array.isArray( value ) ) {
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this.node.array = value;
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} else {
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this.node.value = value;
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}
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}
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}
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export default ReferenceNode;
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export const reference = ( name, type, object ) => nodeObject( new ReferenceNode( name, type, object ) );
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export const referenceBuffer = ( name, type, count, object ) => nodeObject( new ReferenceNode( name, type, object, count ) );
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addNodeClass( 'ReferenceNode', ReferenceNode );
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