修复双面编号问题

src/ColorPalette.ts

@@ -1,5 +1,5 @@
 import * as THREE from 'three';
-import { LineBasicMaterial, MeshBasicMaterial, Color } from 'three';
+import { Color, LineBasicMaterial, MeshBasicMaterial } from 'three';
 const ColorPalette = [
     [255, 0, 0, 255],    //----- 0 - lets make it red for an example
     //[255, 255, 255, 255],//----- 0 - ByBlock - White
@@ -284,7 +284,7 @@ export class ColorMaterial
     {
         if (this.m_BasicMaterialMap.has(index))
             return this.m_BasicMaterialMap.get(index);
-        let mat = new MeshBasicMaterial({ color: this.GetColor(index) });
+        let mat = new MeshBasicMaterial({ color: this.GetColor(index), side: THREE.DoubleSide });
         this.m_BasicMaterialMap.set(index, mat);
         return mat;
     }

src/SimpleBoard.ts

@@ -178,7 +178,7 @@ export class SimpleBoard
             text.applyMatrix4(new Matrix4().setPosition(position));
         }
 
-        text.CreateDoubleMesh(this._BoardType === BoardType.Layer);
+        // text.CreateDoubleMesh(this._BoardType === BoardType.Layer);
 
         return text;
     }