// $Id: ndbldpth.cpp 1282 2006-06-09 09:46:49Z alex $ // NodeBlendPath implementation. This file controls the tree node 'mouldpath' // which is the shape of the mould for perspective and envelope shapes. /* @@tag:xara-cn@@ DO NOT MODIFY THIS LINE ================================XARAHEADERSTART=========================== Xara LX, a vector drawing and manipulation program. Copyright (C) 1993-2006 Xara Group Ltd. Copyright on certain contributions may be held in joint with their respective authors. See AUTHORS file for details. LICENSE TO USE AND MODIFY SOFTWARE ---------------------------------- This file is part of Xara LX. Xara LX is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License version 2 as published by the Free Software Foundation. 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The additional rights are to use, modify, and distribute the software together with the wxWidgets library, the wxXtra library, and the "CDraw" library and any other such library that any version of Xara LX relased by Xara Group Ltd requires in order to compile and execute, including the static linking of that library to XaraLX. In the case of the "CDraw" library, you may satisfy obligation under the GNU General Public License to provide source code by providing a binary copy of the library concerned and a copy of the license accompanying it. Nothing in this section restricts any of the rights you have under the GNU General Public License. SCOPE OF LICENSE ---------------- This license applies to this program (XaraLX) and its constituent source files only, and does not necessarily apply to other Xara products which may in part share the same code base, and are subject to their own licensing terms. 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Xara Group Ltd, Gaddesden Place, Hemel Hempstead, HP2 6EX, UK. http://www.xara.com/ =================================XARAHEADEREND============================ */ /* */ #include "camtypes.h" #include "blobs.h" //#include "rndrgn.h" - in camtypes.h [AUTOMATICALLY REMOVED] //#include "app.h" - in camtypes.h [AUTOMATICALLY REMOVED] #include "nodeblnd.h" #include "objchge.h" //#include "undoop.h" - in camtypes.h [AUTOMATICALLY REMOVED] #include "ndbldpth.h" //#include "tool.h" - in camtypes.h [AUTOMATICALLY REMOVED] //#include "ngcore.h" // NameGallery, for stretching functionality //#include "aw_eps.h" //#include "nativeps.h" // The old style EPS native filter, used in v1.1 //#include "app.h" #include "cxftags.h" //#include "cxfrec.h" - in camtypes.h [AUTOMATICALLY REMOVED] //#include "camfiltr.h" - in camtypes.h [AUTOMATICALLY REMOVED] //#include "tim.h" //#include "becomea.h" - in camtypes.h [AUTOMATICALLY REMOVED] #include "ophist.h" DECLARE_SOURCE("$Revision: 1282 $"); CC_IMPLEMENT_DYNCREATE(NodeBlendPath,NodePath); CC_IMPLEMENT_DYNCREATE(InitNodeBlendPathAction,Action); // Declare smart memory handling in Debug builds #define new CAM_DEBUG_NEW // Uncomment this #define out if you want the code to cache the points it reads from the path // in the function GetPointAtDistance() // The reason it's been taken out is because the CMap<> template class seems to clash with the // CAM_DEBUG_NEW mechanism, resulting in potential memory corruption. #define NBP_CACHEPOINTATDISTANCE /********************************************************************************************* > NodeBlendPath::NodeBlendPath() Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Purpose: This constructor creates a NodeBlendPath linked to no other, with all status flags false and an uninitialised bounding rectangle. **********************************************************************************************/ NodeBlendPath::NodeBlendPath(): NodePath() { m_pCachedPointsAtDistance = NULL; // Reuse the "Initialise cache" call DestroyCachedInformation(); m_Index = 0; } /*********************************************************************************************** > void NodeBlendPath::NodeBlendPath ( Node* ContextNode, AttachNodeDirection Direction, BOOL Locked = FALSE, BOOL Mangled = FALSE, BOOL Marked = FALSE, BOOL Selected = FALSE, ) Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: ContextNode: Pointer to a node which this node is to be attached to. Direction: Specifies the direction in which this node is to be attached to the ContextNode. The values this variable can take are as follows: PREV : Attach node as a previous sibling of the context node NEXT : Attach node as a next sibling of the context node FIRSTCHILD: Attach node as the first child of the context node LASTCHILD : Attach node as a last child of the context node The remaining inputs specify the status of the node: Locked: Is node locked ? Mangled: Is node mangled ? Marked: Is node marked ? Selected: Is node selected ? Outputs: - Returns: - Purpose: This method initialises the node and links it to ContextNode in the direction specified by Direction. All necessary tree links are updated. Errors: An assertion error will occur if ContextNode is NULL ***********************************************************************************************/ NodeBlendPath::NodeBlendPath(Node* ContextNode, AttachNodeDirection Direction, BOOL Locked, BOOL Mangled, BOOL Marked, BOOL Selected ):NodePath(ContextNode, Direction, Locked, Mangled, Marked, Selected) { m_pCachedPointsAtDistance = NULL; // Reuse the "Destroy cache" call DestroyCachedInformation(); m_Index = 0; } /********************************************************************************************* > NodeBlendPath::~NodeBlendPath() Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Purpose: Destructor for Node MouldPath. This does nothing at present. **********************************************************************************************/ NodeBlendPath::~NodeBlendPath() { // Reuse the "Destroy cache" call DestroyCachedInformation(); } /*********************************************************************************************** > virtual Node* NodeBlendPath::SimpleCopy() Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Returns: Pointer to a Node Purpose: Makes a copy of all the data in the node ***********************************************************************************************/ Node* NodeBlendPath::SimpleCopy() { NodeBlendPath* NodeCopy = new NodeBlendPath(); if (NodeCopy) CopyNodeContents(NodeCopy); return NodeCopy; } /*********************************************************************************************** > void NodeBlendPath::CopyNodeContents(NodeBlendPath* NodeCopy) Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: NodeCopy - The node to copy Purpose: Copies the data in the node by first calling the base class to get it to copy its stuff, and then copying its own stuff Scope: protected SeeAlso: NodeRenderableInk::CopyNodeContents ***********************************************************************************************/ void NodeBlendPath::CopyNodeContents( NodeBlendPath* NodeCopy) { NodePath::CopyNodeContents( NodeCopy ); //Copy contents specific to derived class here } /*********************************************************************************************** > BOOL NodeBlendPath::CopyNodePath(NodePath* pNodePathToCopy) Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: pNodePathToCopy Purpose: Copies the data in the node by first calling the base class to get it to copy its stuff, and then copying its own stuff Scope: protected SeeAlso: NodeRenderableInk::CopyNodeContents ***********************************************************************************************/ BOOL NodeBlendPath::CopyNodePath(NodePath* pNodePathToCopy) { ERROR2IF(pNodePathToCopy == NULL,FALSE,"NULL NodePath ptr"); BOOL ok = SetUpPath(); if (ok) ok = InkPath.MergeTwoPaths(pNodePathToCopy->InkPath); return ok; } /*********************************************************************************************** > void NodeBlendPath::PolyCopyNodeContents(NodeRenderable* pNodeCopy) Author: Phil_Martin (Xara Group Ltd) Created: 18/12/2003 Outputs: - Purpose: Polymorphically copies the contents of this node to another Errors: An assertion failure will occur if NodeCopy is NULL Scope: protected ***********************************************************************************************/ void NodeBlendPath::PolyCopyNodeContents(NodeRenderable* pNodeCopy) { ENSURE(pNodeCopy, "Trying to copy a node's contents into a NULL node"); ENSURE(IS_A(pNodeCopy, NodeBlendPath), "PolyCopyNodeContents given wrong dest node type"); if (IS_A(pNodeCopy, NodeBlendPath)) CopyNodeContents((NodeBlendPath*)pNodeCopy); } /*********************************************************************************************** > virtual void NodeBlendPath::Render(RenderRegion* pRRegion) Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: Pointer to a render region Purpose: Overrides inherited function to do nothing. ***********************************************************************************************/ void NodeBlendPath::Render(RenderRegion* pRender) { //if (!InsideBlend()) NodePath::Render(pRender); } /******************************************************************************************** > virtual void NodeBlendPath::RenderEorDrag( RenderRegion* pRender ) Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: pRender - A Pointer to the current RenderRegion Purpose: Overrides inherited function to do nothing. ********************************************************************************************/ void NodeBlendPath::RenderEorDrag( RenderRegion* pRender ) { //if (!InsideBlend()) BlobManager* pBlobMan = GetApplication()->GetBlobManager(); BlobStyle CurrBlobs = pBlobMan->GetCurrentInterest(); if (CurrBlobs.Object) NodePath::RenderEorDrag(pRender); } /******************************************************************************************** > virtual void NodeBlendPath::RenderObjectBlobs(RenderRegion* pRender) Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: pRender - The region to render the blobs into Purpose: Draws the paths object blobs into the render region supplied ********************************************************************************************/ void NodeBlendPath::RenderObjectBlobs(RenderRegion* pRender) { // if (Tool::GetCurrentID() == TOOLID_BEZTOOL) NodePath::RenderObjectBlobs(pRender); // else // { // set our eor colour. // pRender->SetLineColour(BLACK); // render the path // pRender->DrawPath(&InkPath); // call the parent class render function // NodePath::RenderObjectBlobs(pRender); // } } void NodeBlendPath::RenderBlendBlobs(RenderRegion* pRender) { NodePath::RenderObjectBlobs(pRender); } /******************************************************************************************** > DocRect NodeBlendPath::GetBoundingRect(BOOL DontUseAttrs=FALSE, BOOL HitTest=FALSE) Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: DontUseAttrs - TRUE if you don't want to use the nodes attrs to calculate the bounding rect (defaults will be used). Defaults to FALSE. HitTest - TRUE if being called during HitTest Returns: A null rectangle Purpose: Returns a completely null rectangle ********************************************************************************************/ DocRect NodeBlendPath::GetBoundingRect(BOOL DontUseAttrs, BOOL HitTest) { /* Tricky problems: (1) When importing, the importer translates the imported picture to centre around the drop point. Unfortunately it calls us to find our bbox. We don't have a bbox until the moulder nodes are built, which is not until PostImport time so the importer does a Translate = (Drop - Center) which is X = (0 - C), BAD. So we must return a bbox if their is no moulder in the mould! Nasty Showstopper fix */ /* if (InsideBlend()) { // if there is a moulder node to contribute a bbox if (FindNext(CC_RUNTIME_CLASS(NodeMoulder))) { // Then we dont contribute anything! DocRect Rect; return Rect; } } */ // Otherwise we do. return NodePath::GetBoundingRect(DontUseAttrs); } /******************************************************************************************** > BOOL NodeBlendPath::InsideBlend() Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: - Returns: TRUE if this blend path is inside a blend object ie its immediate parent is a blend object Purpose: Determins whether the immediate parent of this node blend path object is a blend object. ********************************************************************************************/ BOOL NodeBlendPath::InsideBlend() { Node* p = FindParent(); if (p) { if (IS_A(p, NodeBlend)) return TRUE; if (IS_A(p, NodeHidden)) return TRUE; } return FALSE; } /********************************************************************************************* > BOOL NodeBlendPath::ExportRender(RenderRegion* pRegion) Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: pRegion = ptr to the export render region to export to Outputs: Returns: TRUE if ok, FALSE if something went wrong Purpose: Called after this node and all of its children have been rendered to the export region. This outputs the "end mould" command. Supports ArtWorks EPS and Camelot EPS Errors: **********************************************************************************************/ BOOL NodeBlendPath::ExportRender(RenderRegion* pRegion) { /*#ifdef DO_EXPORT if (pRegion->IS_KIND_OF(NativeRenderRegion)) return ExportCAMEPS(pRegion); if (pRegion->IS_KIND_OF(ArtWorksEPSRenderRegion)) return ExportAWEPS(pRegion); #endif */ return FALSE; } /********************************************************************************************* BOOL NodeBlendPath::ExportCAMEPS(RenderRegion* pRegion) Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: pRegion = a pointer to a Camelot EPS render region Returns: TRUE if we've rendered the object FALSE if we want the caller to render the object Purpose: Export delimiter tokens for this particular object. The format is defined as csmp path description cemp **********************************************************************************************/ BOOL NodeBlendPath::ExportCAMEPS(RenderRegion* pRegion) { /*#ifdef DO_EXPORT EPSExportDC *pDC = (EPSExportDC *) pRegion->GetRenderDC(); // If we're hanging around in a mould then export the correct tokens if (!InsideBlend()) { NodePath::Render(pRegion); } else { pDC->OutputToken("csmp"); // Camelot "start mould path" token pDC->OutputNewLine(); // Call the parent class NodePath::Render(pRegion); pDC->OutputToken("cemp"); // Camelot "start mould path" token pDC->OutputNewLine(); } #endif */ return TRUE; } /********************************************************************************************* BOOL NodeBlendPath::ExportAWEPS(RenderRegion* pRegion) Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: pRegion = a pointer to a Camelot EPS render region Returns: TRUE if we've rendered the object FALSE if we want the caller to render the object Purpose: Overrides the standard call to Obj->Render so we can render the path as we would like **********************************************************************************************/ BOOL NodeBlendPath::ExportAWEPS(RenderRegion* pRegion) { // just return false for the moment until we write our // proper random AWEPS path render function return FALSE; } /******************************************************************************************** > virtual BOOL NodeBlendPath::AllowOp(ObjChangeParam* pParam, BOOL SetOpPermissionState, BOOL DoPreTriggerEdit = TRUE) Author: Mark_Neves (Xara Group Ltd) 20/01/2000 Created: 29/4/99 Inputs: pParam - pointer to the change parameter object SetOpPermissionState - TRUE to set the Nodes permission flags DoPreTriggerEdit - if TRUE then calls NameGallery::PreTriggerEdit. *Must* be TRUE if the calling Op may make any nodes change their bounds, eg move, line width, cut. Use TRUE if unsure. Returns: TRUE if the operation can proceede, FALSE to stop it Purpose: To get node paths inside blend objects to reformat themselves correctly when their paths change. Also see: NodeBlendPath::OnEdited() ********************************************************************************************/ BOOL NodeBlendPath::AllowOp(ObjChangeParam* pParam, BOOL SetOpPermissionState, BOOL DoPreTriggerEdit) { BOOL ok = TRUE; if (SetOpPermissionState) ok = OnEdited(pParam); if (ok) ok = NodePath::AllowOp(pParam,SetOpPermissionState,DoPreTriggerEdit); return ok; } /******************************************************************************************** > virtual BOOL NodeBlendPath::OnEdited(ObjChangeParam* pParam) Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: pParam - pointer to the change parameter object Returns: TRUE if ok, FALSE if not Purpose: Informs the blend path it has been edited. It records an action that destroys the cached information held by this node. Also see: NodeBlendPath::AllowOp() ********************************************************************************************/ BOOL NodeBlendPath::OnEdited(ObjChangeParam* pParam) { ERROR2IF(pParam == NULL,FALSE,"Null param ptr"); BOOL ok = TRUE; // Always destroy the cached info whenever anyone's doing something to this node. // When an undoable operation is being performed, this is done by the InitNodeBlendPathAction class UndoableOperation* pOp=pParam->GetOpPointer(); if (pOp) ok = (InitNodeBlendPathAction::Init(pOp,pOp->GetUndoActionList(),this)!=AC_FAIL); else DestroyCachedInformation(); return ok; } /******************************************************************************************** > virtual BOOL NodeBlendPath::DoBecomeA(BecomeA* pBecomeA) Author: Chris_Snook (Xara Group Ltd) Created: 16/10/00 Inputs: pBecomeA = ptr to info class containing everything a node needs to be able to become something else Outputs: - Returns: TRUE if successful, FALSE otherwise Purpose: Actually tries to change the node into a different node type. This responds to BECOMEA_PASSBACK reason by making a duplicate NodeBlendPath and passing it to the pfnPassBack func provided in the pBecomeA class. This responds to BECOMEA_REPLACE by making a duplicate NodePath (not NodeBlendPath) and inserting into the tree. Errors: - SeeAlso: NodePath::DoBecomeA() ********************************************************************************************/ BOOL NodeBlendPath::DoBecomeA(BecomeA* pBecomeA) { // Check for a NULL entry param ERROR2IF_PF(pBecomeA == NULL,FALSE,("pBecomeA is NULL")); // This lump checks that the Reason is one that we understand // It also makes sure that we don't have a NULL UndoOp ptr BOOL ValidReason = (pBecomeA->GetReason() == BECOMEA_REPLACE || pBecomeA->GetReason() == BECOMEA_PASSBACK); ERROR2IF_PF(!ValidReason,FALSE,("Unkown BecomeA reason %d",pBecomeA->GetReason())); BOOL Success = TRUE; // Our success flag (Important that this defaults to TRUE) NodePath* pNewNodePath = NULL; // Ptr to a new NodePath, if we get to make one. if (pBecomeA->BAPath()) { switch (pBecomeA->GetReason()) { case BECOMEA_REPLACE: { // we need to be a NodePath .... // Make a copy of the NodePath of this NodeBlendPath CALL_WITH_FAIL(((pNewNodePath = (NodePath*)NodePath::SimpleCopy ()) != NULL), pBecomeA->GetUndoOp(), Success); if (Success) { // MUST now copy our children since we need to copy any attributes the path has appllied to it CopyChildAttrs (pNewNodePath); UndoableOperation* pUndoOp = pBecomeA->GetUndoOp(); // NOT sure if its valid to not have one of these (seems to be assumed in other places) // so for now this ERROR2 will fire if there isn't one .... // ERROR2IF(pUndoOp == NULL, FALSE, "No op pointer in NodeBlendPath::DoBecomeA"); if (pUndoOp) { // hide the text story NodeHidden* pNodeHidden; if (pUndoOp->DoHideNode(this,FALSE,&pNodeHidden)==FALSE) Success = FALSE; // Insert the NodeGroup next to the old hidden TextStory if (!pUndoOp->DoInsertNewNode(pNewNodePath,pNodeHidden,NEXT,FALSE,FALSE,FALSE,FALSE)) Success = FALSE; } else { pNewNodePath->AttachNode(this, NEXT); } if (Success) pBecomeA->PassBack(pNewNodePath,this); if (!pUndoOp) { CascadeDelete(); delete this; } } } break; case BECOMEA_PASSBACK : { // we need to be a NodePath .... // Make a copy of the NodePath of this NodeBlendPath CALL_WITH_FAIL(((pNewNodePath = (NodePath*)SimpleCopy()) != NULL), pBecomeA->GetUndoOp(), Success); // If successful, pass it back with my attribute map if (Success) Success = pBecomeA->PassBack(pNewNodePath,this); } break; default: break; } } if (!Success) { if (pNewNodePath != NULL) { // Delete all the NodePath's children (if it has any) and unlink it from the tree (if it's linked) // This is all done by CascadeDelete() pNewNodePath->CascadeDelete(); delete pNewNodePath; pNewNodePath = NULL; } } return Success; } /******************************************************************************************** > virtual INT32 NodeBlendPath::ComplexCopy(CopyStage Stage, Range& RangeToCopy, Node** pOutput) Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: Stage - COPYOBJECT if we should make a copy - COPYFINISHED once the entire copy operation has completed RangeToCopy - Describes the range which is currently being copied. pOutput - a pointer to a pointer to a node. Set this pointer to point at the tree copy Returns: -1 = The routine failed to make a copy. 0 = No copy has been made. +1 = pOutput points to the copy. Purpose: If the copystage is COPYOBJECT, The node has been called to copy itself and do what ever it needs to to make a sensible copy of other items such as attributes. The caller (CopyObjects) will not deep copy this node (as this is a complex copy and it expects the handler to know what its doing). In this case the NodeBlendPath object needs to turn itself into a node path. SeeAlso Node::ComplexCopy(), CopyObjects() ********************************************************************************************/ INT32 NodeBlendPath::ComplexCopy(CopyStage Stage, Range& RangeToCopy, Node** pOutput) { ERROR2IF(pOutput==NULL,FALSE,"NodeBlendPath::ComplexCopy() called with NULL output pointer!"); switch (Stage) { case COPYOBJECT: { // we've been asked to make a copy of ourselves NodePath* NodeCopy = CreateNodePathCopy(); if (NodeCopy != NULL) { (*pOutput) = NodeCopy; return 1; } break; } case COPYFINISHED: return 0; break; } return -1; } /******************************************************************************************** > NodePath* NodeBlendPath::CreateNodePathCopy() Author: Mark_Neves (Xara Group Ltd) Created: 10/5/99 Inputs: - Returns: ptr to a NodePath equivalent, or NULL if it fails Purpose: Creates a NodePath that contains the exact same definition. SeeAlso: - ********************************************************************************************/ NodePath* NodeBlendPath::CreateNodePathCopy() { // we've been asked to make a copy of ourselves NodePath* pCopy = new NodePath; if (pCopy != NULL) NodePath::CopyNodeContents(pCopy); return pCopy; } /******************************************************************************************** > virtual BOOL NodeBlendPath::WritePreChildrenWeb(BaseCamelotFilter* pFilter) Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: pFilter = ptr to the filter Returns: TRUE if record is written, FALSE if not Purpose: Writes the mould path record to the filter SeeAlso: - ********************************************************************************************/ BOOL NodeBlendPath::WritePreChildrenWeb(BaseCamelotFilter* pFilter) { ERROR2IF(pFilter == NULL,FALSE,"NULL filter param"); INT32 NumCoords = InkPath.GetNumCoords(); INT32 RecordSize = sizeof(INT32)+(sizeof(PathVerb)*NumCoords)+(sizeof(DocCoord)*NumCoords); CamelotFileRecord Rec(pFilter,TAG_BLEND_PATH,RecordSize); BOOL ok = Rec.Init(); if (ok) ok = Rec.WritePath(&InkPath); if (ok) ok = pFilter->Write(&Rec); if (ok) { CamelotFileRecord FilledRec(pFilter, TAG_NODEBLENDPATH_FILLED, sizeof(INT32)); ok = FilledRec.Init(); if (ok) { INT32 Filled = InkPath.IsFilled; ok = FilledRec.WriteINT32(Filled); if (ok) ok = pFilter->Write(&FilledRec); } } if (!ok) pFilter->GotError(_R(IDE_FILE_WRITE_ERROR)); return ok; } //-------------------------------------------------------------- // See NodeBlendPath::WritePreChildrenWeb(BaseCamelotFilter* pFilter) // BOOL NodeBlendPath::WritePreChildrenNative(BaseCamelotFilter* pFilter) { return WritePreChildrenWeb(pFilter); } /******************************************************************************************** > void NodeBlendPath::DestroyCachedInformation() Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: - Returns: - Purpose: Destroys any cached information the node may be storing about the path, such as it's length. Should be called whenever the node is edited, for example. SeeAlso: - ********************************************************************************************/ void NodeBlendPath::DestroyCachedInformation() { m_CachedPathLength = -1.0; if (m_pCachedPointsAtDistance != NULL) { m_pCachedPointsAtDistance->RemoveAll(); delete m_pCachedPointsAtDistance; m_pCachedPointsAtDistance = NULL; } } /******************************************************************************************** > double NodeBlendPath::GetPathLength() Author: Mark_Neves (Xara Group Ltd) Created: 29/4/99 Inputs: - Returns: The length of the path stored in this NodeBlendPath Purpose: Access function to underlying Path function Also allows the NodeBlendPath to do a bit of caching SeeAlso: - ********************************************************************************************/ double NodeBlendPath::GetPathLength() { if (m_CachedPathLength < 0) m_CachedPathLength = InkPath.GetPathLength(); return m_CachedPathLength; } /******************************************************************************************** > BOOL NodeBlendPath::GetPointAtDistance(MILLIPOINT Distance, DocCoord* pPoint) Author: Mark_Neves (Xara Group Ltd) Created: 30/4/99 Inputs: Distance = a length along the path Outputs: pPoint = the coordinate of the point that distance along the path pTangent = tangent at this point (can be NULL) Returns: TRUE/FALSE for success/failure Purpose: Gets the coordinate of a point a certain distance along this path Calls the underlying Path class function This wrapper allows us to do any caching, if we get round to it. ********************************************************************************************/ BOOL NodeBlendPath::GetPointAtDistance(MILLIPOINT Distance, DocCoord* pPoint, double* pTangent) { ERROR2IF(pPoint == NULL,FALSE,"NULL pPoint param"); BOOL Found = FALSE; #ifdef NBP_CACHEPOINTATDISTANCE CPathPointInfo PointInfo; if (m_pCachedPointsAtDistance == NULL) { m_pCachedPointsAtDistance = new CMap; // if (m_pCachedPointsAtDistance != NULL) // m_pCachedPointsAtDistance->InitHashTable(1277); // Init hash table size to a suitably large prime number } if (m_pCachedPointsAtDistance != NULL) { Found = m_pCachedPointsAtDistance->Lookup(Distance,PointInfo); //if (Found) // TRACEUSER( "Diccon", _T("Point %d, %d found in cache\n"), PointInfo.m_Point.x, PointInfo.m_Point.y); } if (!Found) { if (InkPath.GetPointAtDistance(Distance,&PointInfo.m_Point,&PointInfo.m_Tangent)) { if (m_pCachedPointsAtDistance != NULL) m_pCachedPointsAtDistance->SetAt(Distance,PointInfo); // TRACEUSER( "Diccon", _T("Point %d, %d found from line\n"), PointInfo.m_Point.x, PointInfo.m_Point.y); Found = TRUE; } } if (Found) { *pPoint = PointInfo.m_Point; if (pTangent) *pTangent = PointInfo.m_Tangent; } #else double Tangent = 0.0; if (InkPath.GetPointAtDistance(Distance,pPoint,&Tangent)) { if (pTangent) *pTangent = Tangent; Found = TRUE; } #endif // NBP_CACHEPOINTATDISTANCE // if (Found == FALSE) // TRACEUSER( "Diccon", _T("Not found at distance %d\n"), Distance); return Found; } /******************************************************************************************** > UINT32 NodeBlendPath::GetPathIndex() Author: Diccon_Yamanaka (Xara Group Ltd) Created: 23/9/99 Inputs: - Returns: The index number of this nodeblendpath Purpose: To find out which NBP this is. SeeAlso: - ********************************************************************************************/ UINT32 NodeBlendPath::GetPathIndex() { return m_Index; } /******************************************************************************************** > INT32 NodeBlendPath::SetPathIndex() Author: Diccon_Yamanaka (Xara Group Ltd) Created: 23/9/99 Inputs: - Returns: The index number of this nodeblendpath, or -1 if it fails Purpose: Sets the index of this NBP by finding out how many NBP's already exist in the parent nodeblend SeeAlso: - ********************************************************************************************/ INT32 NodeBlendPath::SetPathIndex() { Node* pParent = ((Node*)this)->FindParent(); if ((pParent == NULL) || (!pParent->IS_KIND_OF(NodeBlend))) { ERROR3("Path has no parent, or it is not a nodeblend"); return -1; } UINT32 Index = ((NodeBlend*)pParent)->GetNumNodeBlendPaths(); m_Index = Index; return (INT32)Index; } /*********************************************************************************************** > virtual BOOL NodeBlendPath::IsANodeBlendPath() Author: Diccon_Yamanaka (Xara Group Ltd) Created: 14/11/99 Inputs: - Purpose: virtual identifier function ***********************************************************************************************/ BOOL NodeBlendPath::IsANodeBlendPath() { return TRUE; } //------------------------------------------------------------------------------------------ //------------------------------------------------------------------------------------------ //------------------------------------------------------------------------------------------ /******************************************************************************************** > ActionCode InitNodeBlendPathAction::Init(UndoableOperation* pOp,ActionList* pActionList,NodeBlend* pThisNodeBlend) Author: Mark_Neves (Xara Group Ltd) Created: 4/5/99 Inputs: pOp = ptr to the operation to which this action belongs pNodeBlendPath = ptr to blend path node involved pActionList = ptr to action list to which this action should be added Outputs: - Returns: ActionCode, one of AC_OK, AC_NO_RECORD or AC_FAIL Purpose: Simply destroys the cached information for this blend path Errors: - SeeAlso: Action::Init() ********************************************************************************************/ ActionCode InitNodeBlendPathAction::Init(UndoableOperation* pOp,ActionList* pActionList,NodeBlendPath* pNodeBlendPath) { ERROR2IF(pOp == NULL,AC_FAIL,"No undo op ptr given"); ERROR2IF(pActionList == NULL,AC_FAIL,"No action list given"); ERROR2IF(pNodeBlendPath == NULL,AC_FAIL,"No blend path node given"); UINT32 ActSize = sizeof(InitNodeBlendPathAction); InitNodeBlendPathAction* pNewAction; ActionCode Ac = Action::Init(pOp,pActionList,ActSize,CC_RUNTIME_CLASS(InitNodeBlendPathAction),(Action**)&pNewAction); if (Ac != AC_FAIL && pNewAction != NULL) { pNewAction->m_pNodeBlendPath = pNodeBlendPath; pNodeBlendPath->DestroyCachedInformation(); } return Ac; } /******************************************************************************************** > ActionCode InitNodeBlendPathAction::Execute(); Author: Mark_Neves (Xara Group Ltd) Created: 4/5/99 Inputs: - Outputs: - Returns: ActionCode, one of AC_OK, AC_NO_RECORD or AC_FAIL Purpose: Executes the action. Destroys the blend path node's cached info Errors: - SeeAlso: Action::Init() ********************************************************************************************/ ActionCode InitNodeBlendPathAction::Execute() { if (pOperation->IS_KIND_OF(UndoableOperation)) return InitNodeBlendPathAction::Init((UndoableOperation*)pOperation,pOppositeActLst,m_pNodeBlendPath); else { ERROR3("InitNodeBlendPathAction::Execute() called with op that's not an undoable op"); return AC_FAIL; } }