!1662 优化:矩形灯增加夹点 拉伸 捕捉

src/DatabaseServices/Lights/RectAreaLight.ts

@@ -1,5 +1,6 @@
-import { Group, Matrix4, Object3D, RectAreaLight as TRectAreaLight, Vector3 } from "three";
+import { Box3, Group, Matrix4, Object3D, RectAreaLight as TRectAreaLight, Vector3 } from "three";
 import { UpdateDraw } from "../../Common/Status";
+import { equalv3, YAxis, ZeroVec } from "../../Geometry/GeUtils";
 import { RenderType } from "../../GraphicsSystem/RenderType";
 import { AutoRecord } from "../AutoRecord";
 import { Factory } from "../CADFactory";
@@ -8,6 +9,8 @@ import { ObjectId } from "../ObjectId";
 import { Light } from "./Light";
 import { RectAreaLightHelper } from "./RectAreaLightHelper";
 
+const TARGET_DISTANCE = -1000;
+
 @Factory
 export class RectAreaLight extends Light
 {
@@ -25,7 +28,6 @@ export class RectAreaLight extends Light
     @AutoRecord BarnDoorAngle: number = 90;//0-90   挡光板角度
     @AutoRecord BarnDoorLength: number = 20;//0-100 挡光板长度
     @AutoRecord SourceTexture: ObjectId;//Texture 源纹理 默认无 可以追加一张贴图
-
     protected _ShowHelper = true;
 
     get Target()
@@ -47,15 +49,73 @@ export class RectAreaLight extends Light
     }
     GetGripPoints(): Array<Vector3>
     {
-        return [this.Position, this._Target];
+        let heightHalf = this._Height * 0.5;
+        let widthHalf = this.Width * 0.5;
+        let pos = this.Position;
+
+        let pts: Vector3[] = [
+            new Vector3(-widthHalf, -heightHalf, 0).applyMatrix4(this.OCSNoClone),
+            new Vector3(widthHalf, -heightHalf, 0).applyMatrix4(this.OCSNoClone),
+            new Vector3(widthHalf, heightHalf, 0).applyMatrix4(this.OCSNoClone),
+            new Vector3(-widthHalf, heightHalf, 0).applyMatrix4(this.OCSNoClone),
+            pos,
+            pos.clone().add(this.Normal.multiplyScalar(TARGET_DISTANCE))
+        ];
+        return pts;
     }
     MoveGripPoints(indexList: number[], vec: Vector3)
     {
+        let vecInv = vec.clone().applyMatrix4(this.OCSInv.setPosition(0, 0, 0));
+        if (equalv3(vecInv, ZeroVec, 1e-4)) return;
+
         this.WriteAllObjectRecord();
-        if (indexList[0] === 0)
+
+        let heightHalf = this._Height * 0.5;
+        let widthHalf = this.Width * 0.5;
+        let pts: Vector3[] = [
+            new Vector3(-widthHalf, -heightHalf, 0),
+            new Vector3(widthHalf, -heightHalf, 0),
+            new Vector3(widthHalf, heightHalf, 0),
+            new Vector3(-widthHalf, heightHalf, 0),
+        ];
+
+        let i = indexList[0];
+        if (i < 4)
+        {
+            pts[i].add(vecInv);
+
+            let newBox = new Box3;
+            if (i === 0 || i === 2)
+                newBox.setFromPoints([pts[0], pts[2]]);
+            else
+                newBox.setFromPoints([pts[1], pts[3]]);
+
+            //变量复用
+            let size = newBox.getSize(new Vector3);
+            this._Width = size.x;
+            this._Height = size.y;
+
+            //新的中心
+            let center = newBox.getCenter(size);
+            center.setZ(0);
+
+            center.applyMatrix4(this.OCSNoClone);
+
+            this._Matrix.setPosition(center);
+            this.Update();
+        }
+        else if (i === 4)
+        {
             this.Position = this.Position.add(vec);
-        else
-            this.Target = this.Target.add(vec);
+            this.Update(UpdateDraw.Matrix);
+        }
+        else if (i === 5)
+        {
+            let target = pts[0].setFromMatrixPosition(this._Matrix).add(this.Normal.multiplyScalar(TARGET_DISTANCE)).add(vec);
+            target.applyMatrix4(this.OCSInv).negate().applyMatrix4(this.OCSNoClone);
+            this._Matrix.lookAt(target, this.Position, YAxis);
+            this.Update(UpdateDraw.Matrix);
+        }
     }
     get Height()
     {
@@ -92,6 +152,7 @@ export class RectAreaLight extends Light
         this.UpdateDrawObject(renderType, lightGroup);
         return lightGroup;
     }
+
     UpdateDrawObject(type: RenderType, obj: Object3D)
     {
         let light = obj.children[0] as TRectAreaLight;
@@ -99,10 +160,9 @@ export class RectAreaLight extends Light
         light.width = this._Width;
         light.height = this._Height;
         light.color.copy(this.Color);
-        light.lookAt(this._Target);
         // light.castShadow = true;//threejs没有支持这个影子
 
-        if (this._ShowHelper || true)
+        if (this._ShowHelper)
         {
             let help: RectAreaLightHelper;
             if (obj.children.length === 1)
@@ -115,12 +175,8 @@ export class RectAreaLight extends Light
 
             help.updateMatrixWorld();
         }
-        else
-        {
-            if (obj.children.length > 1)
-                obj.children[1].visible = false;
-        }
     }
+
     protected _ReadFile(file: CADFiler)
     {
         super._ReadFile(file);
@@ -137,6 +193,7 @@ export class RectAreaLight extends Light
             this.BarnDoorLength = file.Read();
             this.SourceTexture = file.Read();
         }
+
     }
     //对象将自身数据写入到文件.
     WriteFile(file: CADFiler)