在PrimitiveComponent/MeshComponent实现GetBoundingBox函数

example/Basic/RenderBoundBox.cpp

@@ -231,7 +231,7 @@ private:
         CreateComponentInfo cci(GetSceneRoot());
 
         {
-            cci.mat=scale(10,10,1);
+            cci.mat=ScaleMatrix(10,10,1);
 
             rm_plane->component=CreateComponent<MeshComponent>(&cci,rm_plane->cdp);
         }
@@ -250,7 +250,7 @@ private:
     {
         CreateComponentInfo cci(GetSceneRoot());
 
-        cci.mat=rm_torus->component->GetLocalMatrix();
+        //cci.mat=rm_torus->component->GetLocalMatrix()*rm_torus->component->GetMesh()->GetBoundingBox();
 
         CreateComponent<MeshComponent>(&cci,rm_box->cdp);
 

inc/hgl/component/MeshComponent.h

@@ -101,6 +101,17 @@ public:
         return mcd->mesh;
     }
 
+    const bool GetBoundingBox(AABB &box) const override
+    {
+        Mesh *mesh=GetMesh();
+
+        if (!mesh)
+            return false;
+
+        box=mesh->GetBoundingBox();
+        return true;
+    }
+
 public:
 
     Pipeline *GetPipeline() const

inc/hgl/component/PrimitiveComponent.h

@@ -1,6 +1,8 @@
 #pragma once
 
 #include<hgl/component/SceneComponent.h>
+#include<hgl/graph/AABB.h>
+#include<hgl/graph/OBB.h>
 
 COMPONENT_NAMESPACE_BEGIN
 
@@ -15,6 +17,20 @@ public:
     using SceneComponent::SceneComponent;
 
     virtual ~PrimitiveComponent()=default;
+
+    virtual const bool GetBoundingBox(AABB &box) const =0;
+
+    const bool GetBoundingBox(OBB &box)
+    {
+        AABB aabb;
+
+        if(!GetBoundingBox(aabb))
+            return false;
+
+        box.Set(GetLocalToWorldMatrix(),aabb);
+
+        return true;
+    }
 };//class PrimitiveComponent
 
 COMPONENT_NAMESPACE_END