提交吸附功能

src/app/babylon/controller/scene-manager.ts

@@ -61,6 +61,8 @@ import { LoadTool } from '../tool/load-tool';
 
 //场景管理器
 export class SceneManager {
+
+
   //----------------Camera-----------------\\
 
   public engine: Engine;
@@ -875,11 +877,20 @@ export class SceneManager {
 
     ModeManager.log("吸附模型" + target);
 
-    let targetRoot = SceneManager.getRootTransformNode(target);
+    let targetRoot = SceneManager.getRootTransformNode(target) as AbstractMesh;
 
     if (mover == targetRoot) {
       return;
     }
+
+    //先通过吸附点吸附
+    let byAdsorbPoint = BabylonTool.adsorb2MeshByPoint(mover, targetRoot, "WAI")
+
+    //完成吸附了
+    if (byAdsorbPoint) {
+      return;
+    }
+
     let aimPos_y: number = 0;
 
     let direction = 0.5;

src/app/babylon/tool/babylon-tool.ts

@@ -10,6 +10,7 @@ import {
   ISceneLoaderPluginAsync,
   ISceneLoaderProgressEvent,
   Mesh,
+  Node,
   NodeMaterial,
   PBRMaterial,
   QuadraticEase,
@@ -537,6 +538,56 @@ export class BabylonTool {
   }
 
 
+  /**
+   * 根据特殊节点名匹配，吸附两个mesh
+   * 现在移动者身上找到包含key的节点，然后以此节点名去目标者身上找对齐的节点
+   * @param mover 移动者
+   * @param targetRoot 目标者
+   * @param key 特殊字符串
+   */
+  public static adsorb2MeshByPoint(mover: AbstractMesh, targetRoot: AbstractMesh, key: string) {
+    //吸附成功
+    let isSuccess = false;
+    //找到移动者的对齐点
+
+    let moverAdsorbNode = BabylonTool.getNodeContainKey(mover, key);
+
+    if (moverAdsorbNode != null && moverAdsorbNode.length > 0 && targetRoot instanceof Mesh) {
+      let moverAdsorbPoint = moverAdsorbNode[0] as AbstractMesh;
+      let aimNode = BabylonTool.getNodeContainKey(targetRoot, moverAdsorbPoint.name);
+      if (aimNode != null && aimNode.length > 0) {
+        let aimAdsorbPoint = aimNode[0] as AbstractMesh;
+        let aimPos = aimAdsorbPoint.getAbsolutePosition();
+
+        //世界坐标下，移动者的吸附点相对于根节点的偏移
+        let moverLocalPos = moverAdsorbPoint.getAbsolutePosition().subtract(mover.getAbsolutePosition());
+        let moverNewPos = aimPos.subtract(moverLocalPos);
+        mover.setAbsolutePosition(moverNewPos);
+
+        isSuccess = true;
+      }
+    }
+    return isSuccess;
+  }
+
+  /**
+   * 获取包含某关键字的子节点
+   * 特殊字符：Adsorb_
+   * @param mesh 
+   */
+  public static getNodeContainKey(mesh: AbstractMesh, key: string) {
+    let moverAdsorbNode = mesh.getChildren((node: Node) => {
+      if (TsTool.stringContain(node.name, key)) {
+        return true;
+      }
+      else {
+        return false;
+      }
+    }, false)
+    return moverAdsorbNode;
+  }
+
+
 }
 
 //输入提示界面