修改偏移的交互.

src/Add-on/Offset.ts

@@ -72,7 +72,7 @@ export class Command_TestOffset implements Command
                 {
                     if (lastpls) lastpls.forEach(cu => cu.Erase());
                     let dir = GetPointAtCurveDir(cu, p) ? 1 : -1
-                    lastpls = cu.GetOffsetCurves(p.distanceTo(cu.GetClosestPointTo(p, !cu.IsClose)) * dir);
+                    lastpls = cu.GetOffsetCurves(p.distanceTo(cu.GetClosestPointTo(p, false)) * dir);
 
                     lastpls.forEach((offCur) =>
                     {

src/Add-on/OffsetX.ts

@@ -2,7 +2,9 @@ import { app } from "../ApplicationServices/Application";
 import { Polyline } from "../DatabaseServices/Polyline";
 import { Command } from "../Editor/CommandMachine";
 import { PromptStatus } from "../Editor/PromptResult";
+import { Vector3 } from "three";
 
+const autoDis = true;
 
 //无限内偏移
 export class OffsetX implements Command
@@ -15,25 +17,36 @@ export class OffsetX implements Command
         let pl = ssRes.Entity as Polyline;
         if (!pl) return;
 
-        let disRes = await app.m_Editor.GetDistance({
-            Msg: "指定偏移距离:",
-            KeyWordList: [{ msg: "通过", key: "T" }],
-            Default: this.offsetDis
-        });
-
-        if (disRes.Status != PromptStatus.OK) return;
-        this.offsetDis = disRes.Value;
-        let dis = -this.offsetDis;
-        if (pl.IsClockWise) dis = -dis;
-
-        let disRes1 = await app.m_Editor.GetDistance({
-            Msg: "步长:",
-            KeyWordList: [{ msg: "通过", key: "T" }],
-            Default: 1
-        });
-
-        if (disRes1.Status != PromptStatus.OK) return;
-        let step = disRes1.Value;
+        let dis: number, step: number;
+
+        if (autoDis)
+        {
+            this.offsetDis = 1.2 * Math.max(...pl.BoundingBox.getSize(new Vector3()).toArray());
+            dis = -this.offsetDis;
+            step = this.offsetDis / 20;
+        }
+        else
+        {
+            let disRes = await app.m_Editor.GetDistance({
+                Msg: "指定偏移距离:",
+                KeyWordList: [{ msg: "通过", key: "T" }],
+                Default: this.offsetDis
+            });
+
+            if (disRes.Status != PromptStatus.OK) return;
+            this.offsetDis = disRes.Value;
+            dis = -this.offsetDis;
+            if (pl.IsClockWise) dis = -dis;
+
+            let disRes1 = await app.m_Editor.GetDistance({
+                Msg: "步长:",
+                KeyWordList: [{ msg: "通过", key: "T" }],
+                Default: 1
+            });
+
+            if (disRes1.Status != PromptStatus.OK) return;
+            step = disRes1.Value;
+        }
 
         // let step = 0.5;
         let offRes: Polyline[] = [];