/*
* Copyright (c) <2017> Side Effects Software Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
*/

#pragma once

#include "HoudiniGeoPartObject.h"
#include "HoudiniCookHandler.h"

class UStaticMesh;
class AActor;
class USceneComponent;

struct HOUDINIENGINERUNTIME_API FHoudiniEngineInstancerUtils
{
    public:

	static bool CreateAllInstancers(
	    FHoudiniCookParams& HoudiniCookParams,
	    const HAPI_NodeId& AssetId,
	    const TArray< FHoudiniGeoPartObject > & FoundInstancers,
	    TMap< FHoudiniGeoPartObject, UStaticMesh * > & StaticMeshes,
	    USceneComponent* ParentComponent,
	    TMap< FHoudiniGeoPartObject, USceneComponent * >& Instancers,
	    TMap< FHoudiniGeoPartObject, USceneComponent * >& NewInstancers );

	static bool GetInstancedObjectsAndTransforms(
	    const FHoudiniGeoPartObject& HoudiniGeoPartObject, const HAPI_NodeId& AssetId,
	    TArray< FHoudiniGeoPartObject >& InstancedGeoParts, TArray< TArray< FTransform > >& InstancedGeoPartsTransforms,
	    TArray< UObject *>& InstancedObjects, TArray< TArray< FTransform > >& InstancedObjectsTransforms );

	static bool GetPackedPrimInstancerObjectsAndTransforms(
	    const FHoudiniGeoPartObject& HoudiniGeoPartObject,
	    TArray< FHoudiniGeoPartObject >& InstancedGeoPart,
	    TArray< TArray< FTransform > >& InstancedTransforms );

	static bool GetUnrealAttributeInstancerObjectsAndTransforms(
	    const FHoudiniGeoPartObject& HoudiniGeoPartObject,
	    const HAPI_NodeId& AssetId,
	    TArray< UObject *>& InstancedObjects,
	    TArray< TArray< FTransform > >& InstancedTransforms );

	static bool CreateInstancerComponent(
	    UObject* InstancedObject,
	    const TArray< FTransform >& InstancedObjectTransforms,
	    const FHoudiniGeoPartObject& InstancerGeoPartObject,
	    USceneComponent* ParentComponent,
	    USceneComponent*& CreatedInstancedComponent );

	static bool CreateInstancedStaticMeshComponent(	    
	    UStaticMesh* StaticMesh,
	    const TArray< FTransform >& InstancedObjectTransforms,
	    const FHoudiniGeoPartObject& InstancerGeoPartObject,
	    USceneComponent* ParentComponent,
	    USceneComponent*& CreatedInstancerComponent,
	    UMaterialInterface * InstancerMaterial = nullptr );

	static bool CreateInstancedActorComponent(
	    UObject* InstancedObject,
	    const TArray< FTransform >& InstancedObjectTransforms,
	    const FHoudiniGeoPartObject& InstancerGeoPartObject,
	    USceneComponent* ParentComponent,
	    USceneComponent*& CreatedInstancedComponent );
};