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node_modules/three/src/materials/nodes/MeshMatcapNodeMaterial.js

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+import NodeMaterial from './NodeMaterial.js';
+import { materialReference } from '../../nodes/accessors/MaterialReferenceNode.js';
+import { diffuseColor } from '../../nodes/core/PropertyNode.js';
+import { vec3 } from '../../nodes/tsl/TSLBase.js';
+import { mix } from '../../nodes/math/MathNode.js';
+import { matcapUV } from '../../nodes/utils/MatcapUVNode.js';
+
+import { MeshMatcapMaterial } from '../MeshMatcapMaterial.js';
+
+const _defaultValues = /*@__PURE__*/ new MeshMatcapMaterial();
+
+class MeshMatcapNodeMaterial extends NodeMaterial {
+
+	static get type() {
+
+		return 'MeshMatcapNodeMaterial';
+
+	}
+
+	constructor( parameters ) {
+
+		super();
+
+		this.lights = false;
+
+		this.isMeshMatcapNodeMaterial = true;
+
+		this.setDefaultValues( _defaultValues );
+
+		this.setValues( parameters );
+
+	}
+
+	setupVariants( builder ) {
+
+		const uv = matcapUV;
+
+		let matcapColor;
+
+		if ( builder.material.matcap ) {
+
+			matcapColor = materialReference( 'matcap', 'texture' ).context( { getUV: () => uv } );
+
+		} else {
+
+			matcapColor = vec3( mix( 0.2, 0.8, uv.y ) ); // default if matcap is missing
+
+		}
+
+		diffuseColor.rgb.mulAssign( matcapColor.rgb );
+
+	}
+
+}
+
+
+export default MeshMatcapNodeMaterial;