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//
//		            GetProportionalScreenPos
//
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#include "CKAll.h"

CKObjectDeclaration	*FillBehaviorGetProportionalScreenPosDecl();
CKERROR CreateGetProportionalScreenPosProto(CKBehaviorPrototype **);
int GetProportionalScreenPos(const CKBehaviorContext& behcontext);

CKObjectDeclaration	*FillBehaviorGetProportionalScreenPosDecl()
{
  CKObjectDeclaration *od = CreateCKObjectDeclaration("Get Proportional Screen Pos");	
  od->SetDescription("Converts a given 2d position on the screen to a proportional position.");
  /* 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>Pos X: </SPAN>X position on screen.<BR>
  <SPAN CLASS=pin>Pos Y: </SPAN>Y position on screen.<BR>
  <BR>
  <SPAN CLASS=pout>%Pos X: </SPAN>proportional X position on screen.<BR>
  <SPAN CLASS=pout>%Pos Y: </SPAN>proportional Y position on screen.<BR>
  <BR>
  eg: if the 3dview size is (400,300), and X=200,Y=150 then %X=50 and %Y=50.<BR>
  */
  /* warning:
  - the position is supposed to be given in the 3dview window.<BR>
  */
  od->SetCategory("Interface/Screen");
  od->SetType( CKDLL_BEHAVIORPROTOTYPE);
  od->SetGuid(CKGUID(0x671e53a2,0x5ba16d62));
  od->SetAuthorGuid(VIRTOOLS_GUID);
  od->SetAuthorName("Virtools");
  od->SetVersion(0x00010000);
  od->SetCreationFunction(CreateGetProportionalScreenPosProto);
  od->SetCompatibleClassId(CKCID_BEOBJECT);
  return od;
}


CKERROR CreateGetProportionalScreenPosProto(CKBehaviorPrototype **pproto)
{
  CKBehaviorPrototype *proto = CreateCKBehaviorPrototype("Get Proportional Screen Pos");
  if(!proto) return CKERR_OUTOFMEMORY;
  
  proto->DeclareInput("In");
  proto->DeclareOutput("Out");
  
  proto->DeclareInParameter("Pos X", CKPGUID_INT);
  proto->DeclareInParameter("Pos Y", CKPGUID_INT);
  proto->DeclareOutParameter("%Pos X", CKPGUID_PERCENTAGE);
  proto->DeclareOutParameter("%Pos Y", CKPGUID_PERCENTAGE);
  
  proto->SetFlags(CK_BEHAVIORPROTOTYPE_NORMAL);
  proto->SetFunction(GetProportionalScreenPos);

  *pproto = proto;
  return CK_OK;
  
}


int GetProportionalScreenPos(const CKBehaviorContext& behcontext)
{
	CKBehavior* beh = behcontext.Behavior;
	beh->ActivateInput(0, FALSE);
	
	int x, y;
	beh->GetInputParameterValue(0, &x);
	beh->GetInputParameterValue(1, &y);
	
	CKRenderContext* rc = behcontext.CurrentRenderContext;
	if(!rc) return CKBR_OK;
	
	float percx = (float)x/rc->GetWidth();
	float percy = (float)y/rc->GetHeight();
	
	beh->SetOutputParameterValue(0, &percx);
	beh->SetOutputParameterValue(1, &percy);
	
	beh->ActivateOutput(0);
	return CKBR_OK;
}