Camelot: AddPressurePointsAction Class Reference

This is the function which creates an instance of this action. If there is no room in the undo buffer (which is determined by the base class Init function called within) the function will either return AC_NO_RECORD which means the operation can continue, but no undo information needs to be stored, or AC_OK which means the operation should continue AND record undo information. If the function returns AC_FAIL, there was not enough memory to record the undo information, and the user has decided not to continue with the operation.

06022 {
06023     ERROR2IF(pAttrBrush == NULL,AC_FAIL,"pAttrBrush is NULL");
06024 
06025     // just check that we do actually have a pressure brush attribute, if not then just quit
06026     if (!pAttrBrush->ContainsPressureCache())
06027         return AC_OK;
06028     // Get the attribute value, just to make sure
06029     BrushAttrValue* pVal = (BrushAttrValue*)pAttrBrush->GetAttributeValue();
06030     if (pVal == NULL)
06031         return AC_FAIL;
06032 
06033     // make the new action
06034     UINT32 ActSize = sizeof(AddPressurePointsAction);
06035     AddPressurePointsAction* pNewAction;
06036     ActionCode Ac = Action::Init(pOp,pActionList,ActSize,CC_RUNTIME_CLASS(AddPressurePointsAction),(Action**)&pNewAction);
06037     *ppNewAction = pNewAction;
06038 
06039     if (Ac != AC_FAIL)
06040     {
06041         // if the CSampleData is NULL then we are removing points
06042         if (pNewPoints == NULL)
06043         {
06044             //allocate a new list to store the deleted points in
06045             pNewPoints = new CSampleData;
06046             if (pNewPoints == NULL)
06047             {
06048                 delete pNewAction;
06049                 return AC_FAIL;
06050             }
06051             // initialise the array
06052             if (!pNewPoints->InitialiseData(NumPoints))
06053             {
06054                 delete pNewAction;
06055                 delete pNewPoints;
06056                 return AC_FAIL;
06057             }
06058 
06059             pVal->DeletePressurePoints(StartIndex, NumPoints, pNewPoints->GetSampleArray());
06060             // we must calculate num items ourselves
06061             pNewPoints->SetNumItemsFromArraySize();
06062         }
06063         // otherwise we are adding
06064         else
06065         {   
06066             pNewPoints->ClipArray(NumPoints);
06067             pVal->AddPressurePoints(pNewPoints, StartIndex);
06068             NumPoints = (UINT32)pNewPoints->GetNumItems();
06069             
06070             delete pNewPoints;
06071             pNewPoints = NULL;
06072         }
06073         pNewAction->m_pAttrBrush = pAttrBrush;
06074         pNewAction->m_pPressureSampler = pNewPoints;
06075         pNewAction->m_StartIndex = StartIndex;
06076         pNewAction->m_NumPoints = NumPoints;
06077         
06078         pAttrBrush->ClearCachedRect();
06079 
06080         // tell the attr we are changing the list, so don't reposition
06081         pVal->SetPressureUpdateType(UPDATE_LISTANDPOSITION);
06082         
06083     //  TRACEUSER( "Diccon", _T("Start = %d, End = %d\n"), StartDistance, pNewAction->m_EndDistance);
06084 
06085         
06086     }
06087     return Ac;
06088     
06089 }


Public Member Functions
	AddPressurePointsAction ()
	Constructor for the action.
	~AddPressurePointsAction ()
	destructor for the action
virtual ActionCode	Execute ()
	Executes the action. This will reset the num blend steps in pThisNodeBrush to OldNumSteps, after creating another action to record the current num steps of pThisNodeBrush.
Static Public Member Functions
static ActionCode	Init (Operation pOp, ActionList pActionList, AttrBrushType pAttrBrush, CSampleData pNewPoints, UINT32 StartIndex, size_t NumPoints, AddPressurePointsAction **NewAction)
	This is the function which creates an instance of this action. If there is no room in the undo buffer (which is determined by the base class Init function called within) the function will either return AC_NO_RECORD which means the operation can continue, but no undo information needs to be stored, or AC_OK which means the operation should continue AND record undo information. If the function returns AC_FAIL, there was not enough memory to record the undo information, and the user has decided not to continue with the operation.
Public Attributes
AttrBrushType *	m_pAttrBrush
CSampleData *	m_pPressureSampler
MILLIPOINT	m_StartIndex
size_t	m_NumPoints

AddPressurePointsAction Class Reference

Public Member Functions

Static Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation