bi1指向目标

src/app/babylonjs/FireTruck.ts

@@ -132,7 +132,6 @@ export class FireTruck {
         } else if (this.input.C) {
             this.RotateBi6(this.deltaTime);
         } else if (this.targetPoint != null) {
-
             switch (this.armActionState) {
                 case ArmActionState.Bi:
                     this.AutoRotateBi();
@@ -178,7 +177,7 @@ export class FireTruck {
     public AutoRotateBi() {
 
         let biPos_xz = this.Bi.absolutePosition.clone();
-        biPos_xz.y = 0; //只需指向目标点在xz平面的投影即可
+        biPos_xz.y = this.targetPoint.y; //只需指向目标点在xz平面的投影即可
 
         const v1 = this.targetPoint.subtract(biPos_xz).normalize();//归一化，因为要用到叉乘的结果做速度
         const v2 = this.Bi.forward;
@@ -189,6 +188,7 @@ export class FireTruck {
         const cross = Vector3.Cross(v1, v2);//叉积的结果，表示v1\v2平面的法线向量，大小为v1\v2夹角的sin值(v1v2都是单位向量的前提下)
         const sinA = cross.y;//因为,x、z都为0，y直接表示两者的sin值
 
+        console.log(cosA);
         if ((1 - Math.abs(cosA)) <= 0.00001) {//因为0度与180度的sin值都为0，不可判断是否到位，要用cos值
             this.armActionState = ArmActionState.Bi1;
         }
@@ -331,12 +331,13 @@ export class FireTruck {
 
         const v1 = (this.targetPoint.subtract(this.Bi1.absolutePosition)).normalize();
         const v2 = this.Bi1.forward.normalize();
-        const sinA = Vector3.Cross(v1, v2);
-        // console.log(sinA);
 
-        let rotateDir = sinA.x > 0 ? -1 : 1;
+        const sinA = Vector3.Cross(v1, v2);//叉乘结果，反应速度
+
+        let rotateDir = v1.y - v2.y < 0 ? 1 : -1;//y向量差值，表示需要旋转的方向
+
+
         let loaclSpeed = sinA.length() * rotateDir;
-        // console.log(loaclSpeed, "speed");
 
         this.RotateBi1(loaclSpeed);
 

src/app/babylonjs/babylonjs.component.ts

@@ -65,7 +65,10 @@ export class BabylonjsComponent implements OnInit {
     scene.onPointerDown = (evt: PointerEvent, pickInfo: PickingInfo, type: PointerEventTypes) => {
       if (evt.button == 2 && pickInfo.hit) {
         sphere.position = pickInfo.pickedPoint;
-        fireTruck.setTarget(sphere.absolutePosition);
+        // setTimeout(() => {
+        fireTruck.setTarget(pickInfo.pickedPoint);
+        // }, 100);
+
       }
     }
     window.addEventListener("keydown", (ev) => {