add credit (#2802)

src/extensions/core/load3d/conditional-lines/ColoredShadowMaterial.js

@@ -1,3 +1,7 @@
+/*
+Taken from: https://github.com/gkjohnson/threejs-sandbox/tree/master/conditional-lines
+under MIT license
+ */
 import { Color, ShaderLib, ShaderMaterial, UniformsUtils } from 'three'
 
 export class ColoredShadowMaterial extends ShaderMaterial {

src/extensions/core/load3d/conditional-lines/ConditionalEdgesGeometry.js

@@ -1,3 +1,7 @@
+/*
+Taken from: https://github.com/gkjohnson/threejs-sandbox/tree/master/conditional-lines
+under MIT license
+ */
 import { BufferAttribute, BufferGeometry, Triangle, Vector3 } from 'three'
 
 const vec0 = new Vector3()

src/extensions/core/load3d/conditional-lines/ConditionalEdgesShader.js

@@ -1,3 +1,7 @@
+/*
+Taken from: https://github.com/gkjohnson/threejs-sandbox/tree/master/conditional-lines
+under MIT license
+ */
 import { Color } from 'three'
 
 export const ConditionalEdgesShader = {

src/extensions/core/load3d/conditional-lines/Lines2/ConditionalLineMaterial.js

@@ -1,3 +1,7 @@
+/*
+Taken from: https://github.com/gkjohnson/threejs-sandbox/tree/master/conditional-lines
+under MIT license
+ */
 import { ShaderMaterial, UniformsLib, UniformsUtils, Vector2 } from 'three'
 import { LineMaterial } from 'three/examples/jsm/lines/LineMaterial'
 

src/extensions/core/load3d/conditional-lines/Lines2/ConditionalLineSegmentsGeometry.js

@@ -1,3 +1,7 @@
+/*
+Taken from: https://github.com/gkjohnson/threejs-sandbox/tree/master/conditional-lines
+under MIT license
+ */
 import * as THREE from 'three'
 import { LineSegmentsGeometry } from 'three/examples/jsm/lines/LineSegmentsGeometry.js'
 

src/extensions/core/load3d/conditional-lines/OutsideEdgesGeometry.js

@@ -1,3 +1,7 @@
+/*
+Taken from: https://github.com/gkjohnson/threejs-sandbox/tree/master/conditional-lines
+under MIT license
+ */
 import { BufferAttribute, BufferGeometry, Vector3 } from 'three'
 
 const vec = new Vector3()