功能:矩形光的拉伸实现

src/DatabaseServices/Entity/Entity.ts

@@ -7,6 +7,7 @@ import { UpdateDraw } from '../../Common/Status';
 import { ObjectSnapMode } from '../../Editor/ObjectSnapMode';
 import { Box3Ext } from '../../Geometry/Box';
 import { equaln, equalv3, GetBox, IdentityMtx4, UpdateBoundingSphere } from '../../Geometry/GeUtils';
+import { Vec3 } from '../../Geometry/IVec3';
 import { IntersectOption } from '../../GraphicsSystem/IntersectWith';
 import { RenderType } from '../../GraphicsSystem/RenderType';
 import { AutoRecord } from '../AutoRecord';
@@ -179,6 +180,22 @@ export class Entity extends CADObject
         return new Vector3().setFromMatrixPosition(this._Matrix);
     }
 
+    Move(v: Vec3)
+    {
+        if (equaln(v.x, 0) && equaln(v.y, 0) && equaln(v.z, 0)) return;
+
+        this.WriteAllObjectRecord();
+
+        this._Matrix.elements[12] += v.x;
+        this._Matrix.elements[13] += v.y;
+        this._Matrix.elements[14] += v.z;
+
+        this._SpaceOCS.elements[12] += v.x;
+        this._SpaceOCS.elements[13] += v.y;
+        this._SpaceOCS.elements[14] += v.z;
+        this.Update(UpdateDraw.Matrix);
+    }
+
     set Position(pt: Vector3)
     {
         let moveX = pt.x - this._Matrix.elements[12];

src/DatabaseServices/Lights/RectAreaLight.ts

@@ -10,7 +10,7 @@ import { ObjectId } from "../ObjectId";
 import { Light } from "./Light";
 import { RectAreaLightHelper } from "./RectAreaLightHelper";
 
-const TARGET_DISTANCE = -1000;
+const TARGET_DISTANCE = -100;
 
 @Factory
 export class RectAreaLight extends Light
@@ -54,10 +54,10 @@ export class RectAreaLight extends Light
         let pos = this.Position;
 
         let pts: Vector3[] = [
-            new Vector3(-widthHalf, -heightHalf, 0).applyMatrix4(this.OCSNoClone),
+            new Vector3(-widthHalf, -heightHalf, 0).applyMatrix4(this.OCSNoClone),//左下
-            new Vector3(widthHalf, -heightHalf, 0).applyMatrix4(this.OCSNoClone),
+            new Vector3(widthHalf, -heightHalf, 0).applyMatrix4(this.OCSNoClone),//右下
-            new Vector3(widthHalf, heightHalf, 0).applyMatrix4(this.OCSNoClone),
+            new Vector3(widthHalf, heightHalf, 0).applyMatrix4(this.OCSNoClone),//右上
-            new Vector3(-widthHalf, heightHalf, 0).applyMatrix4(this.OCSNoClone),
+            new Vector3(-widthHalf, heightHalf, 0).applyMatrix4(this.OCSNoClone),//左上
             pos,
             pos.clone().add(this.Normal.multiplyScalar(TARGET_DISTANCE))
         ];
@@ -111,12 +111,94 @@ export class RectAreaLight extends Light
         }
         else if (i === 5)
         {
-            this.Target = this.Target.add(vec);
+            let target = this.Position.add(this.Normal.multiplyScalar(TARGET_DISTANCE)).add(vec);
+            this.Target = target;
             this.lookAtTarget();
         }
     }
+
+    GetStretchPoints()
+    {
+        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),//左下
+            new Vector3(widthHalf, -heightHalf, 0).applyMatrix4(this.OCSNoClone),//右下
+            new Vector3(widthHalf, heightHalf, 0).applyMatrix4(this.OCSNoClone),//右上
+            new Vector3(-widthHalf, heightHalf, 0).applyMatrix4(this.OCSNoClone),//左上
+            pos.clone().add(this.Normal.multiplyScalar(TARGET_DISTANCE))
+        ];
+        return pts;
+    }
+    MoveStretchPoints(ids: number[], vec: Vector3)
+    {
+        if (ids.length === 4 || ids.length === 3)
+        {
+            this.Move(vec);
+            return;
+        }
+        else if (ids.length === 1)
+        {
+            let i = ids[0];
+            if (i < 4)
+                this.MoveGripPoints(ids, vec);
+            else
+                this.MoveGripPoints([5], vec);
+        }
+        else//===2
+        {
+            ids.sort((a1, a2) => a1 - a2);
+            let inv = this.OCSInv.setPosition(0, 0, 0);
+            vec = vec.clone().applyMatrix4(inv);
+            let ocs = inv.copy(this._Matrix).setPosition(0, 0, 0);
+
+            if (ids[0] === 0)
+            {
+                if (ids[1] === 1)//下
+                {
+                    vec.x = 0;
+                    vec.z = 0;
+                    vec.applyMatrix4(ocs);
+
+                    this.MoveGripPoints([0], vec);
+                }
+                else if (ids[1] === 3)//左
+                {
+                    vec.y = 0;
+                    vec.z = 0;
+                    vec.applyMatrix4(ocs);
+                    this.MoveGripPoints([0], vec);
+                }
+            }
+            else if (ids[0] === 1)
+            {
+                if (ids[1] === 2)//右
+                {
+                    vec.y = 0;
+                    vec.z = 0;
+                    vec.applyMatrix4(ocs);
+                    this.MoveGripPoints([1], vec);
+                }
+            }
+            else if (ids[0] === 2)
+            {
+                if (ids[1] === 3)//上
+                {
+                    vec.x = 0;
+                    vec.z = 0;
+                    vec.applyMatrix4(ocs);
+
+                    this.MoveGripPoints([2], vec);
+                }
+            }
+        }
+    }
+
     lookAtTarget()
     {
+        this.WriteAllObjectRecord();
         this._Matrix.lookAt(this.Position, this.Target, YAxis);
         this.Update(UpdateDraw.Matrix);
     }

src/Editor/GripDragServices.ts

@@ -7,6 +7,7 @@ import { MouseKey } from '../Common/KeyEnum';
 import { GetEntity } from '../Common/Utils';
 import { Entity } from '../DatabaseServices/Entity/Entity';
 import { Line } from '../DatabaseServices/Entity/Line';
+import { RectAreaLight } from '../DatabaseServices/Lights/RectAreaLight';
 import { SpotLight } from '../DatabaseServices/Lights/SpotLight';
 import { BufferGeometryUtils } from '../Geometry/BufferGeometryUtils';
 import { isParallelTo, isPerpendicularityTo, SnapPoint } from '../Geometry/GeUtils';
@@ -161,6 +162,10 @@ export class GripDragServices implements EditorService
                 {
                     baseP = snapIndexMap[0].ent.Position;
                 }
+                else if (snapIndexMap[0].ent instanceof RectAreaLight && snapIndexMap[0].indexArr[0] === 5)
+                {
+                    baseP = snapIndexMap[0].ent.Position;
+                }
             }
 
             //修改UCS