You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
85 lines
2.5 KiB
85 lines
2.5 KiB
6 months ago
|
import { addNodeMaterial } from './NodeMaterial.js';
|
||
|
|
import { transformedNormalView } from '../accessors/NormalNode.js';
|
||
|
|
import { positionViewDirection } from '../accessors/PositionNode.js';
|
||
|
|
import PhysicalLightingModel from '../functions/PhysicalLightingModel.js';
|
||
|
|
import MeshPhysicalNodeMaterial from './MeshPhysicalNodeMaterial.js';
|
||
|
|
import { float, vec3 } from '../shadernode/ShaderNode.js';
|
||
|
|
|
||
|
|
class SSSLightingModel extends PhysicalLightingModel {
|
||
|
|
|
||
|
|
constructor( useClearcoat, useSheen, useIridescence, useSSS ) {
|
||
|
|
|
||
|
|
super( useClearcoat, useSheen, useIridescence );
|
||
|
|
|
||
|
|
this.useSSS = useSSS;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
direct( { lightDirection, lightColor, reflectedLight }, stack, builder ) {
|
||
|
|
|
||
|
|
if ( this.useSSS === true ) {
|
||
|
|
|
||
|
|
const material = builder.material;
|
||
|
|
|
||
|
|
const { thicknessColorNode, thicknessDistortionNode, thicknessAmbientNode, thicknessAttenuationNode, thicknessPowerNode, thicknessScaleNode } = material;
|
||
|
|
|
||
|
|
const scatteringHalf = lightDirection.add( transformedNormalView.mul( thicknessDistortionNode ) ).normalize();
|
||
|
|
const scatteringDot = float( positionViewDirection.dot( scatteringHalf.negate() ).saturate().pow( thicknessPowerNode ).mul( thicknessScaleNode ) );
|
||
|
|
const scatteringIllu = vec3( scatteringDot.add( thicknessAmbientNode ).mul( thicknessColorNode ) );
|
||
|
|
|
||
|
|
reflectedLight.directDiffuse.addAssign( scatteringIllu.mul( thicknessAttenuationNode.mul( lightColor ) ) );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
super.direct( { lightDirection, lightColor, reflectedLight }, stack, builder );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
class MeshSSSNodeMaterial extends MeshPhysicalNodeMaterial {
|
||
|
|
|
||
|
|
constructor( parameters ) {
|
||
|
|
|
||
|
|
super( parameters );
|
||
|
|
|
||
|
|
this.thicknessColorNode = null;
|
||
|
|
this.thicknessDistortionNode = float( 0.1 );
|
||
|
|
this.thicknessAmbientNode = float( 0.0 );
|
||
|
|
this.thicknessAttenuationNode = float( .1 );
|
||
|
|
this.thicknessPowerNode = float( 2.0 );
|
||
|
|
this.thicknessScaleNode = float( 10.0 );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
get useSSS() {
|
||
|
|
|
||
|
|
return this.thicknessColorNode !== null;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
setupLightingModel( /*builder*/ ) {
|
||
|
|
|
||
|
|
return new SSSLightingModel( this.useClearcoat, this.useSheen, this.useIridescence, this.useSSS );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
copy( source ) {
|
||
|
|
|
||
|
|
this.thicknessColorNode = source.thicknessColorNode;
|
||
|
|
this.thicknessDistortionNode = source.thicknessDistortionNode;
|
||
|
|
this.thicknessAmbientNode = source.thicknessAmbientNode;
|
||
|
|
this.thicknessAttenuationNode = source.thicknessAttenuationNode;
|
||
|
|
this.thicknessPowerNode = source.thicknessPowerNode;
|
||
|
|
this.thicknessScaleNode = source.thicknessScaleNode;
|
||
|
|
|
||
|
|
return super.copy( source );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
export default MeshSSSNodeMaterial;
|
||
|
|
|
||
|
|
addNodeMaterial( 'MeshSSSNodeMaterial', MeshSSSNodeMaterial );
|