清理代码格式

src/Common/Singleton.ts

@@ -25,13 +25,13 @@ export class Singleton
      */
     static GetInstance<T>(Class: { new(): T; }): T
     {
-        let obj = this.singletonMap.get(Class);
+        let instance = this.singletonMap.get(Class);
-        if (!obj)
+        if (!instance)
         {
-            obj = new Class();
+            instance = new Class();
-            this.singletonMap.set(Class, obj);
+            this.singletonMap.set(Class, instance);
         }
-        return obj;
+        return instance;
     }
 
     /**

src/DatabaseServices/Arc.ts

@@ -615,9 +615,9 @@ export class Arc extends Curve
                 let pts = [this.StartPoint, this.EndPoint];
                 let [sp, ep] = pts;
 
-                let OldChordLengthHalf = sp.distanceTo(ep) * 0.5;
+                let oldChordLengthHalf = sp.distanceTo(ep) * 0.5;
 
-                let arcHeight = OldChordLengthHalf * this.Bul;
+                let arcHeight = oldChordLengthHalf * this.Bul;
 
                 pts[index].add(vec);
 

src/DatabaseServices/Polyline.ts

@@ -1042,14 +1042,14 @@ export class Polyline extends Curve
                     let notChangeP = this.GetPointAtParam(nextIndex);
 
                     //原先的弦长的一半
-                    let OldChordLengthHalf = needChangeP.distanceTo(notChangeP) * 0.5;
+                    let oldChordLengthHalf = needChangeP.distanceTo(notChangeP) * 0.5;
 
                     //弓高
-                    let arcHeight = OldChordLengthHalf * d.bul;
+                    let arcHeight = oldChordLengthHalf * d.bul;
 
                     needChangeP.add(vec);
 
-                    let newChordLengthHalf = (needChangeP.distanceTo(notChangeP) * 0.5);
+                    let newChordLengthHalf = needChangeP.distanceTo(notChangeP) * 0.5;
 
                     d.bul = arcHeight / newChordLengthHalf;
                 }