preact

frontend/node_modules/three/examples/jsm/nodes/materials/MeshMatcapNodeMaterial.js

@@ -0,0 +1,52 @@
+import NodeMaterial, { addNodeMaterial } from './NodeMaterial.js';
+import { materialReference } from '../accessors/MaterialReferenceNode.js';
+import { diffuseColor } from '../core/PropertyNode.js';
+import { vec3 } from '../shadernode/ShaderNode.js';
+import { MeshMatcapMaterial } from 'three';
+import { mix } from '../math/MathNode.js';
+import { matcapUV } from '../utils/MatcapUVNode.js';
+
+const defaultValues = new MeshMatcapMaterial();
+
+class MeshMatcapNodeMaterial extends NodeMaterial {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isMeshMatcapNodeMaterial = true;
+
+		this.lights = false;
+
+		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;
+
+addNodeMaterial( 'MeshMatcapNodeMaterial', MeshMatcapNodeMaterial );