/////////////////////////////////////////////////////
/////////////////////////////////////////////////////
//
//		            GetLayerSquare
//
/////////////////////////////////////////////////////
/////////////////////////////////////////////////////

//#include "precomp.h"
#include "CKAll.h"

CKObjectDeclaration	*FillBehaviorGetLayerSquareDecl();
CKERROR CreateGetLayerSquareProto(CKBehaviorPrototype **);
int GetLayerSquare(const CKBehaviorContext& behcontext);

CKObjectDeclaration	*FillBehaviorGetLayerSquareDecl()
{
	CKObjectDeclaration *od = CreateCKObjectDeclaration("Get Square From 3D Pos");
	od->SetDescription("Gets the value of a square");
	/* rem:
	<SPAN CLASS=in>In : </SPAN>triggers the process.<BR>
	<SPAN CLASS=out>Out : </SPAN>is activated when the process is completed.<BR>
	<BR>
	<SPAN CLASS=pin>Pos3d : </SPAN>3d position to be converted into a 2d position in the affected grid.<BR>
	<SPAN CLASS=pin>Ref : </SPAN>basis in which the 3d position is expressed.<BR>
	<SPAN CLASS=pin>Layer : </SPAN>Layer to be considered.<BR>
	<BR>
	<SPAN CLASS=pout>Value : </SPAN>Value to be retrieved.<BR>
	<BR><BR>
	Remember, if you want to express an object position just set the referential as your object, and let 3dpos to (0,0,0)
	*/														  
	/* warning:
	- by now the only possible values are bound to a 0-255 range.<BR>
	*/
	od->SetType( CKDLL_BEHAVIORPROTOTYPE );
	od->SetCategory("Grids/Basic");
	od->SetGuid(CKGUID(0xa376e0,0x326609e6));
	od->SetAuthorGuid(VIRTOOLS_GUID);
	od->SetAuthorName("Virtools");
	od->SetVersion(0x00010000);
	od->SetCreationFunction(CreateGetLayerSquareProto);
	od->SetCompatibleClassId(CKCID_BEOBJECT);
	return od;
}


CKERROR CreateGetLayerSquareProto(CKBehaviorPrototype **pproto)
{
  CKBehaviorPrototype *proto = CreateCKBehaviorPrototype("Get Square From 3D Pos");
  if(!proto) return CKERR_OUTOFMEMORY;
  
  proto->DeclareInput("In");
  proto->DeclareOutput("Out");
  
	proto->DeclareInParameter("Pos3d", CKPGUID_VECTOR, "0,0,0" );
	proto->DeclareInParameter("Ref", CKPGUID_3DENTITY );
  proto->DeclareInParameter("Layer", CKPGUID_LAYERTYPE, DEFAULT_LAYER_NAME );

  proto->DeclareOutParameter("Value", CKPGUID_INT, "255" );
  
  proto->SetFlags(CK_BEHAVIORPROTOTYPE_NORMAL);
  proto->SetFunction(GetLayerSquare);
  
  *pproto = proto;
  return CK_OK;
}


int GetLayerSquare(const CKBehaviorContext& behcontext)
{
	CKBehavior* beh = behcontext.Behavior;
	CKContext* ctx	= behcontext.Context;
	
	beh->ActivateInput(0, FALSE);
	beh->ActivateOutput(0);
	
	//_________________________________/ Retrieve Inputs
	VxVector pos(0,0,0);
	beh->GetInputParameterValue(0, &pos);
	
	CK3dEntity *ref = (CK3dEntity *)beh->GetInputParameterObject(1);
	
	int layer_type=1;
	beh->GetInputParameterValue(2, &layer_type);
	
	//_________________________________/ Get Preferred Grid
	CKGridManager *gm = (CKGridManager *) ctx->GetManagerByGuid(GRID_MANAGER_GUID);
	CKGrid *grid = gm->GetPreferredGrid( &pos, ref);
	
	int value=0;

	if( grid ){
		CKLayer *layer = grid->GetLayer( layer_type );
		if( layer ){
			
			VxVector tmp;
			grid->InverseTransform(&tmp, &pos, ref);
			
			int x = (int)tmp.x;
			int y = (int)tmp.z;
			
			layer->GetValue(x, y, &value);
			
		}
	}
	
	beh->SetOutputParameterValue(0, &value);
	
	return CKBR_OK;
}