Fixed the SPS BBox computation on computeBoundingBox = true

src/Particles/babylon.solidParticleSystem.ts

@@ -669,7 +669,7 @@ module BABYLON {
             }
             if (this._computeBoundingBox) {
                 this.mesh._boundingInfo = new BoundingInfo(this._minimum, this._maximum);
-                this.mesh._boundingInfo.boundingBox.setWorldMatrix(this.mesh._worldMatrix);
+                this.mesh._boundingInfo.update(this.mesh._worldMatrix);
             }
             this.afterUpdateParticles(start, end, update);
         }
@@ -909,4 +909,4 @@ module BABYLON {
         public afterUpdateParticles(start?: number, stop?: number, update?: boolean): void {
         }
     }
-}
+}