105 lines
2.6 KiB
JavaScript
105 lines
2.6 KiB
JavaScript
|
import Node, { addNodeClass } from '../core/Node.js';
|
||
|
|
import { getValueType } from '../core/NodeUtils.js';
|
||
|
|
import { buffer } from '../accessors/BufferNode.js';
|
||
|
|
//import { bufferAttribute } from '../accessors/BufferAttributeNode.js';
|
||
|
|
import { instanceIndex } from '../core/IndexNode.js';
|
||
|
|
import { nodeProxy, float } from '../shadernode/ShaderNode.js';
|
||
|
|
|
||
|
|
import { Vector4, MathUtils } from 'three';
|
||
|
|
|
||
|
|
let min = null;
|
||
|
|
let max = null;
|
||
|
|
|
||
|
|
class RangeNode extends Node {
|
||
|
|
|
||
|
|
constructor( minNode = float(), maxNode = float() ) {
|
||
|
|
|
||
|
|
super();
|
||
|
|
|
||
|
|
this.minNode = minNode;
|
||
|
|
this.maxNode = maxNode;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getVectorLength( builder ) {
|
||
|
|
|
||
|
|
const minLength = builder.getTypeLength( getValueType( this.minNode.value ) );
|
||
|
|
const maxLength = builder.getTypeLength( getValueType( this.maxNode.value ) );
|
||
|
|
|
||
|
|
return minLength > maxLength ? minLength : maxLength;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getNodeType( builder ) {
|
||
|
|
|
||
|
|
return builder.object.isInstancedMesh === true ? builder.getTypeFromLength( this.getVectorLength( builder ) ) : 'float';
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
setup( builder ) {
|
||
|
|
|
||
|
|
const object = builder.object;
|
||
|
|
|
||
|
|
let output = null;
|
||
|
|
|
||
|
|
if ( object.isInstancedMesh === true ) {
|
||
|
|
|
||
|
|
const minValue = this.minNode.value;
|
||
|
|
const maxValue = this.maxNode.value;
|
||
|
|
|
||
|
|
const minLength = builder.getTypeLength( getValueType( minValue ) );
|
||
|
|
const maxLength = builder.getTypeLength( getValueType( maxValue ) );
|
||
|
|
|
||
|
|
min = min || new Vector4();
|
||
|
|
max = max || new Vector4();
|
||
|
|
|
||
|
|
min.setScalar( 0 );
|
||
|
|
max.setScalar( 0 );
|
||
|
|
|
||
|
|
if ( minLength === 1 ) min.setScalar( minValue );
|
||
|
|
else if ( minValue.isColor ) min.set( minValue.r, minValue.g, minValue.b );
|
||
|
|
else min.set( minValue.x, minValue.y, minValue.z || 0, minValue.w || 0 );
|
||
|
|
|
||
|
|
if ( maxLength === 1 ) max.setScalar( maxValue );
|
||
|
|
else if ( maxValue.isColor ) max.set( maxValue.r, maxValue.g, maxValue.b );
|
||
|
|
else max.set( maxValue.x, maxValue.y, maxValue.z || 0, maxValue.w || 0 );
|
||
|
|
|
||
|
|
const stride = 4;
|
||
|
|
|
||
|
|
const length = stride * object.count;
|
||
|
|
const array = new Float32Array( length );
|
||
|
|
|
||
|
|
for ( let i = 0; i < length; i ++ ) {
|
||
|
|
|
||
|
|
const index = i % stride;
|
||
|
|
|
||
|
|
const minElementValue = min.getComponent( index );
|
||
|
|
const maxElementValue = max.getComponent( index );
|
||
|
|
|
||
|
|
array[ i ] = MathUtils.lerp( minElementValue, maxElementValue, Math.random() );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
const nodeType = this.getNodeType( builder );
|
||
|
|
|
||
|
|
output = buffer( array, 'vec4', object.count ).element( instanceIndex ).convert( nodeType );
|
||
|
|
//output = bufferAttribute( array, 'vec4', 4, 0 ).convert( nodeType );
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
output = float( 0 );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return output;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
export default RangeNode;
|
||
|
|
|
||
|
|
export const range = nodeProxy( RangeNode );
|
||
|
|
|
||
|
|
addNodeClass( 'RangeNode', RangeNode );
|