#include<hgl/WorkManager.h>
#include"Gizmo.h"
#include<hgl/graph/Ray.h>

using namespace hgl;
using namespace hgl::graph;

const Vector3f GizmoPosition(0,0,0);


///**
//* 一种永远转向正面的变换节点
//*/
//class TransformBillboard:public TransformBase
//{
//    CameraInfo *camera_info=nullptr;
//    bool face_to_camera=false;
//
//    ViewportInfo *viewport_info=nullptr;
//    float fixed_scale=1.0;
//
//public:
//
//    virtual void SetCameraInfo  (CameraInfo *   ci  ){camera_info   =ci;}
//    virtual void SetViewportInfo(ViewportInfo * vi  ){viewport_info =vi;}
//
//    virtual void SetFaceToCamera(bool           ftc ){face_to_camera=ftc;}
//    virtual void SetFixedScale  (const float    size){fixed_scale   =size;}
//
//    virtual bool RefreshTransform(const Transform &tf=IdentityTransform) override
//    {
//        if(!camera_info)
//        {
//            return SceneNode::RefreshTransform(tf);
//        }
//
//        if(face_to_camera)
//        {
//            LocalTransform.SetRotation(CalculateFacingRotationQuat(GetWorldPosition(),camera_info->view,AxisVector::X));
//        }
//
//        if(viewport_info)
//        {
//            const float screen_height=viewport_info->GetViewportHeight();
//
//            const Vector4f pos=camera_info->Project(GetWorldPosition());
//
//            LocalTransform.SetScale(pos.w*fixed_scale/screen_height);
//        }
//
//        return SceneNode::RefreshTransform(tf);
//    }
//};//class BillboardSceneNode:public SceneNode

class TestApp:public WorkObject
{
    SceneNode *sm_move=nullptr;
    //StaticMesh *sm_rotate=nullptr;
    //StaticMesh *sm_scale=nullptr;

private:

    bool InitGizmo()
    {
        if(!InitGizmoResource(GetRenderFramework()))
            return(false);

        sm_move     =GetGizmoMoveNode();
        //sm_rotate   =GetGizmoRotateStaticMesh();
        //sm_scale    =GetGizmoScaleStaticMesh();

        return(true);
    }

    void InitGizmoSceneTree()
    {
        SceneNode *root=GetSceneRoot();

        root->Add(Duplication(sm_move));
        //root.Add(Duplication(sm_rotate->GetScene()));
        //root.CreateSubNode(sm_scale->GetScene());
    }

public:

    bool Init() override
    {
        if(!InitGizmo())
            return(false);

        InitGizmoSceneTree();

        CameraControl *camera_control=GetCameraControl();

        camera_control->SetPosition(Vector3f(32,32,32));
        camera_control->SetTarget(Vector3f(0,0,0));

        return(true);
    }

    using WorkObject::WorkObject;

    ~TestApp()
    {
        FreeGizmoResource();
    }
    
    //void BuildCommandBuffer(uint32 index) override
    //{
    //    camera_control->Refresh();
    //    
    //    const CameraInfo *ci=camera_control->GetCameraInfo();
    //    const ViewportInfo *vi=GetViewportInfo();

    //    const float screen_height=vi->GetViewportHeight();

    //    const Vector4f pos=ci->Project(GizmoPosition);

    //    //{
    //    //    Transform tm;

    //    //    tm.SetScale(pos.w*16.0f/screen_height);

    //    //    root.SetLocalTransform(tm);
    //    //}
    //}
};//class TestApp:public WorkObject

int os_main(int,os_char **)
{
    return RunFramework<TestApp>(OS_TEXT("Gizmo"),1280,720);
}