84 lines
1.9 KiB
JavaScript
84 lines
1.9 KiB
JavaScript
|
import Node from '../core/Node.js';
|
||
|
|
import AttributeNode from '../core/AttributeNode.js';
|
||
|
|
import VaryNode from '../core/VaryNode.js';
|
||
|
|
import ModelNode from '../accessors/ModelNode.js';
|
||
|
|
import MathNode from '../math/MathNode.js';
|
||
|
|
import OperatorNode from '../math/OperatorNode.js';
|
||
|
|
|
||
|
|
class PositionNode extends Node {
|
||
|
|
|
||
|
|
static GEOMETRY = 'geometry';
|
||
|
|
static LOCAL = 'local';
|
||
|
|
static WORLD = 'world';
|
||
|
|
static VIEW = 'view';
|
||
|
|
static VIEW_DIRECTION = 'viewDirection';
|
||
|
|
|
||
|
|
constructor( scope = PositionNode.LOCAL ) {
|
||
|
|
|
||
|
|
super( 'vec3' );
|
||
|
|
|
||
|
|
this.scope = scope;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
getHash( /*builder*/ ) {
|
||
|
|
|
||
|
|
return `position-${this.scope}`;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
generate( builder ) {
|
||
|
|
|
||
|
|
const scope = this.scope;
|
||
|
|
|
||
|
|
let outputNode = null;
|
||
|
|
|
||
|
|
if ( scope === PositionNode.GEOMETRY ) {
|
||
|
|
|
||
|
|
outputNode = new AttributeNode( 'position', 'vec3' );
|
||
|
|
|
||
|
|
} else if ( scope === PositionNode.LOCAL ) {
|
||
|
|
|
||
|
|
outputNode = new VaryNode( new PositionNode( PositionNode.GEOMETRY ) );
|
||
|
|
|
||
|
|
} else if ( scope === PositionNode.WORLD ) {
|
||
|
|
|
||
|
|
const vertexPositionNode = new MathNode( MathNode.TRANSFORM_DIRECTION, new ModelNode( ModelNode.WORLD_MATRIX ), new PositionNode( PositionNode.LOCAL ) );
|
||
|
|
outputNode = new VaryNode( vertexPositionNode );
|
||
|
|
|
||
|
|
} else if ( scope === PositionNode.VIEW ) {
|
||
|
|
|
||
|
|
const vertexPositionNode = new OperatorNode( '*', new ModelNode( ModelNode.VIEW_MATRIX ), new PositionNode( PositionNode.LOCAL ) );
|
||
|
|
outputNode = new VaryNode( vertexPositionNode );
|
||
|
|
|
||
|
|
} else if ( scope === PositionNode.VIEW_DIRECTION ) {
|
||
|
|
|
||
|
|
const vertexPositionNode = new MathNode( MathNode.NEGATE, new PositionNode( PositionNode.VIEW ) );
|
||
|
|
outputNode = new MathNode( MathNode.NORMALIZE, new VaryNode( vertexPositionNode ) );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return outputNode.build( builder, this.getNodeType( builder ) );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
serialize( data ) {
|
||
|
|
|
||
|
|
super.serialize( data );
|
||
|
|
|
||
|
|
data.scope = this.scope;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
deserialize( data ) {
|
||
|
|
|
||
|
|
super.deserialize( data );
|
||
|
|
|
||
|
|
this.scope = data.scope;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
export default PositionNode;
|