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magic/database/DBtpaint2.c

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/*
* DBtechpaint2.c --
*
* Default composition rules.
* Pretty complicated, unfortunately, so it's in a separate file.
*
* *********************************************************************
* * Copyright (C) 1985, 1990 Regents of the University of California. *
* * Permission to use, copy, modify, and distribute this *
* * software and its documentation for any purpose and without *
* * fee is hereby granted, provided that the above copyright *
* * notice appear in all copies. The University of California *
* * makes no representations about the suitability of this *
* * software for any purpose. It is provided "as is" without *
* * express or implied warranty. Export of this software outside *
* * of the United States of America may require an export license. *
* *********************************************************************
*/
#ifndef lint
static char rcsid[] __attribute__ ((unused)) = "$Header: /usr/cvsroot/magic-8.0/database/DBtpaint2.c,v 1.4 2009/12/30 13:42:33 tim Exp $";
#endif /* not lint */
#include <stdio.h>
#include <ctype.h>
#include "utils/magic.h"
#include "utils/geometry.h"
#include "utils/utils.h"
#include "tiles/tile.h"
#include "utils/hash.h"
#include "database/database.h"
#include "database/databaseInt.h"
#include "utils/tech.h"
#include "textio/textio.h"
#define SETPAINT(have,paint,plane,get) \
if (IsDefaultPaint((have), (paint)) \
&& TTMaskHasType(&DBPlaneTypes[(plane)], (have))) \
dbSetPaintEntry((have), (paint), (plane), (get))
#define SETERASE(have,erase,plane,get) \
if (IsDefaultErase((have), (erase)) \
&& TTMaskHasType(&DBPlaneTypes[(plane)], (have))) \
dbSetEraseEntry((have), (erase), (plane), (get))
LayerInfo *dbTechLpPaint;
/* Forward declarations */
extern void dbTechPaintErasePlanes();
extern void dbComposePaintAllImages();
extern void dbComposeResidues();
extern void dbComposeContacts();
extern void dbComposePaintContact();
extern void dbComposeEraseContact();
extern void dbComposeSavedRules();
extern void dbComposeCompose();
extern void dbComposeDecompose();
/*
* ----------------------------------------------------------------------------
*
* DBTechFinalCompose --
*
* Process all the contact erase/compose rules saved by DBTechAddCompose
* when it was reading in the "compose" section of a technology file.
* Also sets up the default paint/erase rules for contacts.
*
* Since by the end of this section we've processed all the painting
* rules, we initialize the tables that say which planes get affected
* by painting/erasing a given type.
*
* There's a great deal of work done here, so it's broken up into a
* number of separate procedures, each of which implements a single
* operation or default rule. Most of the work deals with painting
* and erasing contacts.
*
* Results:
* None.
*
* Side effects:
* Modifies the paint/erase tables.
* Initializes DBTypePaintPlanesTbl[] and DBTypeErasePlanesTbl[].
*
* ----------------------------------------------------------------------------
*/
void
DBTechFinalCompose()
{
TileType i;
TileTypeBitMask testmask, *rMask;
/* Default rules for painting/erasing contacts */
dbComposePaintAllImages();
dbComposeResidues();
dbComposeContacts();
/* Process rules saved from reading the "compose" section */
dbComposeSavedRules();
/* Build up exported tables */
dbTechPaintErasePlanes();
/* Adjust paint tables for any locked layers */
for (i = TT_TECHDEPBASE; i < DBNumUserLayers; i++)
if (!TTMaskHasType(&DBActiveLayerBits, i))
if (DBIsContact(i))
DBLockContact(i);
for (i = DBNumUserLayers; i < DBNumTypes; i++)
{
rMask = DBResidueMask(i);
TTMaskAndMask3(&testmask, &DBActiveLayerBits, rMask);
if (!TTMaskEqual(&testmask, rMask))
{
TTMaskClearType(&DBActiveLayerBits, i);
DBLockContact(i);
}
}
/* Diagnostic */
/* dbTechPrintPaint("DBTechFinalCompose", TRUE, FALSE); */
/* dbTechPrintPaint("DBTechFinalCompose", FALSE, FALSE); */
}
/*
* ----------------------------------------------------------------------------
*
* dbTechPaintErasePlanes --
*
* Fill in the tables telling which planes get affected
* by painting and erasing. One may take the naive view that only
* the planes on which a type is defined can be affected, but then
* one can't define arbitrary composite types.
*
* Results:
* None.
*
* Side effects:
* Fills in DBTypePaintPlanesTbl[] and DBTypeErasePlanesTbl[].
*
* ----------------------------------------------------------------------------
*/
void
dbTechPaintErasePlanes()
{
TileType t, s;
int pNum;
/* Space tiles are special: they may appear on any plane except router */
DBTypePaintPlanesTbl[TT_SPACE] = ~(PlaneNumToMaskBit(PL_ROUTER));
DBTypeErasePlanesTbl[TT_SPACE] = ~(PlaneNumToMaskBit(PL_ROUTER));
/* Skip TT_SPACE */
for (t = 1; t < DBNumTypes; t++)
{
DBTypePaintPlanesTbl[t] = DBTypeErasePlanesTbl[t] = 0;
for (pNum = PL_PAINTBASE; pNum < DBNumPlanes; pNum++)
for (s = 0; s < DBNumTypes; s++)
{
if (DBStdPaintEntry(s, t, pNum) != s)
DBTypePaintPlanesTbl[t] |= PlaneNumToMaskBit(pNum);
if (DBStdEraseEntry(s, t, pNum) != s)
DBTypeErasePlanesTbl[t] |= PlaneNumToMaskBit(pNum);
}
}
}
/*
* ----------------------------------------------------------------------------
*
* dbComposePaintAllImages --
*
* Painting the primary type of a contact layer paints its image
* over all types on each image's plane. (The only types that
* should ever be painted are primary types.)
*
* This rule is called first because it may be overridden by later
* rules, or by explicit composition rules.
*
* Only affects paint entries that haven't already been set to other
* values by explicit paint rules.
*
* Results:
* None.
*
* Side effects:
* Modifies paint/erase tables.
*
* ----------------------------------------------------------------------------
*/
void
dbComposePaintAllImages()
{
TileType tPaint, s, res;
LayerInfo *lp;
int p, n;
/* Iterate over primary types only */
for (n = 0; n < dbNumContacts; n++)
{
lp = dbContactInfo[n];
tPaint = lp->l_type;
if (tPaint >= DBNumUserLayers) continue;
for (res = TT_TECHDEPBASE; res < DBNumTypes; res++)
{
if (TTMaskHasType(&lp->l_residues, res))
{
p = DBPlane(res);
for (s = TT_TECHDEPBASE; s < DBNumTypes; s++)
if (DBPlane(s) == p)
SETPAINT(s, tPaint, p, tPaint);
if (IsDefaultPaint(TT_SPACE, tPaint))
dbSetPaintEntry(TT_SPACE, tPaint, p, tPaint);
}
}
}
}
/*
* ----------------------------------------------------------------------------
*
* dbComposeResidues --
*
* The behavior of a contact type when other, non-contact types are
* painted over it or erased from it is derived from the behavior of
* its residue types.
*
* 1. If painting doesn't affect a contact's residue on a plane,
* it doesn't affect the contact's image on that plane either.
* This allows, for example, painting metal1 over a contact
* "containing" metal1 without breaking the contact.
*
* 2. If painting or erasing a type affects a residue of a
* contact, the image's connectivity to adjacent planes
* is broken and the image is replaced by the result of
* painting or erasing over the residue.
*
* Results:
* None.
*
* Side effects:
* Modifies paint/erase tables.
*
* ----------------------------------------------------------------------------
*/
void
dbComposeResidues()
{
LayerInfo *lp;
TileType s, res;
int n;
/* Painting that doesn't affect the residue doesn't affect the contact. */
for (n = 0; n < dbNumContacts; n++)
{
lp = dbContactInfo[n];
for (res = TT_TECHDEPBASE; res < DBNumUserLayers; res++)
{
if (TTMaskHasType(&lp->l_residues, res))
{
for (s = TT_TECHDEPBASE; s < DBNumUserLayers; s++)
if (!PAINTAFFECTS(res, s))
SETPAINT(lp->l_type, s, DBPlane(res), lp->l_type);
}
}
}
}
/*
* ----------------------------------------------------------------------------
*
* dbComposeContacts --
*
* This procedure handles the rules for composition of contact types.
* We look at the results of painting each type of contact in
* dbContactInfo[] over all other contact types.
*
* Results:
* None.
*
* Side effects:
* Modifies paint/erase tables.
*
* ----------------------------------------------------------------------------
*/
void
dbComposeContacts()
{
LayerInfo *lpImage, *lpPaint;
int m, pNum;
TileTypeBitMask *rmask;
TileType n, ttype, itype, presult, eresult;
for (m = 0; m < dbNumContacts; m++)
{
lpImage = dbContactInfo[m]; /* Existing contact image */
for (n = TT_TECHDEPBASE; n < DBNumUserLayers; n++)
{
lpPaint = &dbLayerInfo[n]; /* Layer being painted or erased */
if (lpImage->l_type != n)
dbComposePaintContact(lpImage, lpPaint);
dbComposeEraseContact(lpImage, lpPaint);
}
}
/* For stacking types, determine the result of painting or erasing */
/* each stacking type by applying the paint and erase results of */
/* each of its residues in sequence. */
for (itype = 0; itype < DBNumTypes; itype++)
{
for (n = DBNumUserLayers; n < DBNumTypes; n++)
{
lpPaint = &dbLayerInfo[n]; /* Layer being painted or erased */
rmask = &lpPaint->l_residues;
for (pNum = PL_TECHDEPBASE; pNum < DBNumPlanes; pNum++)
{
presult = eresult = itype;
for (ttype = TT_TECHDEPBASE; ttype < DBNumUserLayers; ttype++)
if (TTMaskHasType(rmask, ttype))
{
presult = DBStdPaintEntry(presult, ttype, pNum);
eresult = DBStdEraseEntry(eresult, ttype, pNum);
}
SETPAINT(itype, n, pNum, presult);
SETERASE(itype, n, pNum, eresult);
}
}
}
}
/*
* ----------------------------------------------------------------------------
* dbComposePaintContact --
*
* Construct the painting rules for painting type lpPaint over
* the contact image lpImage.
* ----------------------------------------------------------------------------
*/
void
dbComposePaintContact(lpImage, lpPaint)
LayerInfo *lpImage, *lpPaint;
{
int pNum;
PlaneMask pmask, pshared;
LayerInfo *lp;
TileTypeBitMask rmask, cmask;
TileType newtype, ptype, itype;
bool overlap;
/*
* If the residues of lpImage and lpPaint can be merged without
* affecting any of the layers, then we merge them, and look for
* any contact matching the merged residues. If none is found,
* and the planes do not overlap, then just paint the new
* contact. If they cannot be merged, then the original contact
* is dissolved and replaced by its residues.
*/
pmask = lpImage->l_pmask & lpPaint->l_pmask;
overlap = (pmask == 0) ? FALSE : TRUE;
if (overlap)
{
for (pNum = PL_TECHDEPBASE; pNum < DBNumPlanes; pNum++)
{
if (PlaneMaskHasPlane(pmask, pNum))
{
ptype = DBPlaneToResidue(lpPaint->l_type, pNum);
itype = DBPlaneToResidue(lpImage->l_type, pNum);
if (ptype != itype)
break;
}
}
if (pNum == DBNumPlanes)
{
/* Residues are compatible; check for a contact type with */
/* the merged residues (explicitly defined stacked contact */
/* type) */
TTMaskZero(&rmask);
TTMaskSetMask3(&rmask, &lpImage->l_residues, &lpPaint->l_residues);
dbTechMatchResidues(&rmask, &cmask, TRUE);
/* Implicitly-defined stacking types override any */
/* explicitly-defined types, or havoc results. */
/* This allows one to create a type such as "pad" */
/* having the same residues as "m123c" without */
/* magic confusing them in the paint tables. */
newtype = DBTechFindStacking(lpImage->l_type, lpPaint->l_type);
if (TTMaskIsZero(&cmask) || (newtype != -1))
{
/* If there is a stacking contact type, use it */
if (newtype >= DBNumUserLayers)
{
pshared = lpImage->l_pmask & lpPaint->l_pmask;
for (pNum = PL_TECHDEPBASE; pNum < DBNumPlanes; pNum++)
if (PlaneMaskHasPlane(pshared, pNum))
SETPAINT(lpImage->l_type, lpPaint->l_type,
pNum, newtype);
}
else if (lpPaint->l_isContact && (lpImage->l_type < DBNumUserLayers))
{
/* Original contact is replaced by the new one where
* the planes overlap, and is dissolved into its
* residues where they don't.
* In this condition, the residues of image must be
* non-contact types.
*/
for (itype = TT_TECHDEPBASE; itype < DBNumUserLayers; itype++)
{
if (TTMaskHasType(&lpImage->l_residues, itype))
{
if (TTMaskHasType(&lpPaint->l_residues, itype))
{
SETPAINT(lpImage->l_type, lpPaint->l_type,
DBPlane(itype), lpPaint->l_type);
}
else
{
SETPAINT(lpImage->l_type, lpPaint->l_type,
DBPlane(itype), itype);
}
}
}
}
else if (lpPaint->l_isContact &&
!TTMaskHasType(&lpImage->l_residues, lpPaint->l_type))
{
/* Original contact is replaced by the new one where
* the planes overlap, and is dissolved into its
* residues where they don't.
* In this condition, the residues of image are contact
* types.
*/
for (itype = TT_TECHDEPBASE; itype < DBNumUserLayers; itype++)
{
if (TTMaskHasType(&lpImage->l_residues, itype))
{
if (TTMaskHasType(&lpPaint->l_residues, itype))
{
SETPAINT(lpImage->l_type, lpPaint->l_type,
DBPlane(itype), lpPaint->l_type);
}
}
}
}
else
{
/* Painting a residue type on top of a contact */
/* with a compatible residue does nothing, as does */
/* painting one of the types of a stacked contact */
/* on the stacking contact type. In the plane of */
/* the image type, this is non-default behavior. */
SETPAINT(lpImage->l_type, lpPaint->l_type,
DBPlane(lpImage->l_type), lpImage->l_type);
}
}
else
{
/* Presumably there is at most one contact type here */
for (newtype = TT_TECHDEPBASE; newtype < DBNumUserLayers; newtype++)
{
if (TTMaskHasType(&cmask, newtype))
{
lp = &dbLayerInfo[newtype];
for (pNum = PL_TECHDEPBASE; pNum < DBNumPlanes; pNum++)
if (PlaneMaskHasPlane(lp->l_pmask, pNum))
SETPAINT(lpImage->l_type, lpPaint->l_type,
pNum, newtype);
break;
}
}
}
}
else
{
/* Image and paint types overlap in a plane, but */
/* residues are not compatible. Replace image with the */
/* residues of image, except on the overlapping plane. */
for (ptype = TT_TECHDEPBASE; ptype < DBNumUserLayers; ptype++)
if (TTMaskHasType(&lpImage->l_residues, ptype))
if (ptype != itype)
SETPAINT(lpImage->l_type, lpPaint->l_type,
DBPlane(ptype), ptype);
}
}
else if (lpPaint->l_isContact)
{
/* No overlapping planes, and both paint & image types are contacts */
TTMaskZero(&rmask);
TTMaskSetMask3(&rmask, &lpImage->l_residues, &lpPaint->l_residues);
dbTechMatchResidues(&rmask, &cmask, TRUE);
if (!TTMaskIsZero(&cmask))
{
/* Replace image with the new contact type */
for (newtype = TT_TECHDEPBASE; newtype < DBNumUserLayers; newtype++)
{
if (TTMaskHasType(&cmask, newtype))
{
lp = &dbLayerInfo[newtype];
for (pNum = PL_TECHDEPBASE; pNum < DBNumPlanes; pNum++)
if (PlaneMaskHasPlane(lp->l_pmask, pNum))
SETPAINT(lpImage->l_type, lpPaint->l_type,
pNum, newtype);
}
}
}
/* else default paint/erase behavior */
}
}
/*
* ----------------------------------------------------------------------------
*
* dbComposeSubsetResidues --
*
* Create a mask of all contact types whose residues are subsets
* of the "have" type but are not supersets of the "erase" type.
*
* Results:
* True if residues of types in outMask overlap, False if not.
*
* Side Effects:
* outMask is filled with the mask of types.
*
* ----------------------------------------------------------------------------
*/
bool
dbComposeSubsetResidues(lpImage, lpErase, outMask)
LayerInfo *lpImage, *lpErase;
TileTypeBitMask *outMask;
{
TileTypeBitMask ires;
TileTypeBitMask smask, overlapmask;
LayerInfo *li;
int n;
bool rval = FALSE;
/* The residues of lpImage must themselves be decomposed if lpImage */
/* is a stacking type. */
TTMaskZero(&ires);
if (lpImage->l_type >= DBNumUserLayers)
{
for (n = 0; n < dbNumContacts; n++)
{
li = dbContactInfo[n];
if (TTMaskHasType(&lpImage->l_residues, li->l_type))
TTMaskSetMask(&ires, &li->l_residues);
}
}
else
TTMaskSetMask(&ires, &lpImage->l_residues);
/*
* Generate a mask of all contact types whose residue masks are
* subsets of the residues of lpImage. These are all types
* which contain no residues that are not part of lpImage.
*/
TTMaskZero(outMask);
TTMaskZero(&overlapmask);
for (n = 0; n < dbNumContacts; n++)
{
li = dbContactInfo[n];
TTMaskAndMask3(&smask, &li->l_residues, &ires);
if (TTMaskEqual(&smask, &li->l_residues))
{
/* The residues of type cannot be a superset of the */
/* residues of the erase type */
TTMaskAndMask3(&smask, &li->l_residues, &lpErase->l_residues);
if (!TTMaskEqual(&smask, &lpErase->l_residues))
{
TTMaskSetType(outMask, li->l_type);
/* Check if the residues of type overlap one of */
/* the types already generated. */
TTMaskAndMask3(&smask, &overlapmask, &li->l_residues);
if (TTMaskIsZero(&smask))
TTMaskSetMask(&overlapmask, &li->l_residues);
else
rval = TRUE;
}
}
}
return rval;
}
/*
* ----------------------------------------------------------------------------
* dbComposeEraseContact --
*
* Construct the erasing rules for erasing type lpErase from
* the contact image lpImage.
* ----------------------------------------------------------------------------
*/
void
dbComposeEraseContact(lpImage, lpErase)
LayerInfo *lpImage, *lpErase;
{
int pNum;
PlaneMask pmask;
LayerInfo *lp;
TileTypeBitMask cmask;
TileType itype;
bool overlap;
/* The erased planes generally end up with space, so we generate */
/* space as default behavior. This may be altered in specific */
/* cases, below. */
/* The specific check for lpImage as a stacking contact is not */
/* necessary, but prevents generation of non-default rules in */
/* cases which cannot occur. */
for (pNum = PL_TECHDEPBASE; pNum < DBNumPlanes; pNum++)
if (PlaneMaskHasPlane(lpErase->l_pmask, pNum))
if ((lpImage->l_type < DBNumUserLayers)
|| (pNum == DBPlane(lpImage->l_type)))
SETERASE(lpImage->l_type, lpErase->l_type, pNum, TT_SPACE);
/* Erasing self should always leave space; otherwise */
/* the "undo" records aren't symmetric, which screws */
/* everything up. */
if (lpImage->l_type == lpErase->l_type) return;
/* If planes of HAVE and ERASE types don't overlap, we can erase */
/* the ERASE type without affecting the image, so we're done. */
pmask = lpImage->l_pmask & lpErase->l_pmask;
overlap = (pmask == 0) ? FALSE : TRUE;
if (!overlap) return;
/* Find what contacts are subsets of this one and generate a mask */
/* of the types that might be left over after erasing this one. */
/* If those types overlap, leave the existing type alone. If they */
/* don't, then paint them. */
overlap = dbComposeSubsetResidues(lpImage, lpErase, &cmask);
if (overlap)
{
for (pNum = PL_TECHDEPBASE; pNum < DBNumPlanes; pNum++)
if (PlaneMaskHasPlane(lpImage->l_pmask, pNum))
// SETERASE(lpImage->l_type, lpErase->l_type, pNum, TT_SPACE);
SETERASE(lpImage->l_type, lpErase->l_type, pNum, lpImage->l_type);
}
else
{
pmask = lpImage->l_pmask & (~(lpErase->l_pmask));
for (itype = TT_TECHDEPBASE; itype < DBNumTypes; itype++)
if (TTMaskHasType(&cmask, itype))
{
lp = &dbLayerInfo[itype];
pmask &= ~(lp->l_pmask);
for (pNum = PL_TECHDEPBASE; pNum < DBNumPlanes; pNum++)
if (PlaneMaskHasPlane(lp->l_pmask, pNum))
if ((lpImage->l_type < DBNumUserLayers)
|| (pNum == DBPlane(lpImage->l_type)))
SETERASE(lpImage->l_type, lpErase->l_type, pNum, itype);
}
/* If there are any planes in the image which have not been */
/* accounted for, then we decompose these into the residues */
/* of the image. */
for (pNum = PL_TECHDEPBASE; pNum < DBNumPlanes; pNum++)
if (PlaneMaskHasPlane(pmask, pNum))
{
itype = DBPlaneToResidue(lpImage->l_type, pNum);
SETERASE(lpImage->l_type, lpErase->l_type, pNum, itype);
}
}
/* Diagnostic (to be removed or commented out) */
/*
if (!TTMaskIsZero(&cmask))
{
TxPrintf("Have %s, Erase %s: ", DBTypeLongNameTbl[lpImage->l_type],
DBTypeLongNameTbl[lpErase->l_type]);
for (itype = TT_TECHDEPBASE; itype < DBNumTypes; itype++)
if (TTMaskHasType(&cmask, itype))
TxPrintf("%s ", DBTypeLongNameTbl[itype]);
if (overlap)
TxPrintf("overlapping");
TxPrintf("\n");
}
*/
}
/*
* ----------------------------------------------------------------------------
* DBLockContact --
*
* This procedure modifies the erase tables so that the specified contact
* type cannot be erased by erasing one of its residues, which is the default
* behavior.
* ----------------------------------------------------------------------------
*/
void
DBLockContact(ctype)
TileType ctype;
{
LayerInfo *lpImage, *lpPaint;
TileType c, n, itype, eresult;
TileTypeBitMask *rmask;
int m, pNum;
/* Have type, Erase * --> Result is type */
lpPaint = &dbLayerInfo[ctype];
for (n = TT_TECHDEPBASE; n < DBNumTypes; n++)
{
if (n == ctype) continue;
/* Avoid the case, e.g., if ctype is pc+v, then pc+v - pc = v */
/* is still valid if pc is an active layer. */
if (ctype >= DBNumUserLayers)
{
rmask = DBResidueMask(ctype);
if (TTMaskHasType(rmask, n))
if (TTMaskHasType(&DBActiveLayerBits, n))
continue;
}
for (pNum = PL_TECHDEPBASE; pNum < DBNumPlanes; pNum++)
if (PlaneMaskHasPlane(lpPaint->l_pmask, pNum))
SETERASE(ctype, n, pNum, ctype);
}
}
/*
* ----------------------------------------------------------------------------
* DBUnlockContact --
*
* This procedure reverses the operation of DBLockContact, allowing a contact
* to be erased by erasing one of its residues. This is the same code as
* dbComposeContacts(), for a single contact type.
* ----------------------------------------------------------------------------
*/
void
DBUnlockContact(ctype)
TileType ctype;
{
LayerInfo *lpImage, *lpPaint;
TileType n, itype, eresult;
TileTypeBitMask *rmask;
int m, pNum;
lpImage = &dbLayerInfo[ctype];
for (n = TT_TECHDEPBASE; n < DBNumUserLayers; n++)
{
lpPaint = &dbLayerInfo[n];
dbComposeEraseContact(lpImage, lpPaint);
}
/* To be done (maybe): revert rules for stacked contact types */
}
/*
* ----------------------------------------------------------------------------
*
* dbComposeSavedRules --
*
* Process all the contact compose/decompose rules saved
* when the compose section of the tech file was read.
* Each pair on the RHS of one of these rules must contain
* exactly one contact type that spans the same set of planes
* as the image type.
*
* Results:
* None.
*
* Side effects:
* Modifies entries in the paint and erase tables.
*
* ----------------------------------------------------------------------------
*/
void
dbComposeSavedRules()
{
LayerInfo *lpContact;
TileType imageType;
TypePair *pair;
Rule *rule;
int n;
for (n = 0; n < dbNumSavedRules; n++)
{
rule = &dbSavedRules[n];
lpContact = &dbLayerInfo[rule->r_result];
imageType = lpContact->l_type;
for (pair = rule->r_pairs; pair < &rule->r_pairs[rule->r_npairs];
pair++)
{
dbComposeDecompose(imageType, pair->rp_a, pair->rp_b);
dbComposeDecompose(imageType, pair->rp_b, pair->rp_a);
if (rule->r_ruleType == RULE_COMPOSE)
{
dbComposeCompose(imageType, pair->rp_a, pair->rp_b);
dbComposeCompose(imageType, pair->rp_b, pair->rp_a);
}
}
}
}
/*
* ----------------------------------------------------------------------------
* dbComposeDecompose --
*
* Painting componentType over imageType is a no-op.
* Erasing componentType from imageType gives either the image of
* remainingType, if one exists on DBPlane(imageType), or else
* gives the residue of imageType.
*
* Results:
* None.
*
* Side effects:
* Modifies the paint/erase tables as described above.
* Indicates that these modifications are not default
* rules by setting the corresponding bits in the tables
* dbNotDefaultPaintTbl[] and dbNotDefaultEraseTbl[].
* ----------------------------------------------------------------------------
*/
void
dbComposeDecompose(imageType, componentType, remainingType)
TileType imageType;
TileType componentType;
TileType remainingType;
{
int pNum = DBPlane(imageType);
TileType resultType;
/* Painting componentType is a no-op */
dbSetPaintEntry(imageType, componentType, pNum, imageType);
TTMaskSetType(&dbNotDefaultPaintTbl[imageType], componentType);
/* Which residue belongs to the plane pNum? */
resultType = DBPlaneToResidue(imageType, pNum);
/*
* Erasing componentType gives remainingType or breaks
* imageType's contact.
*/
dbSetEraseEntry(imageType, componentType, pNum, resultType);
TTMaskSetType(&dbNotDefaultEraseTbl[imageType], componentType);
}
/*
* ----------------------------------------------------------------------------
* dbComposeCompose --
*
* Painting paintType over existingType gives imageType.
*
* Results:
* None.
*
* Side effects:
* Modifies the paint/erase tables as described above.
* Indicates that these modifications are not default
* rules by setting the corresponding bits in the tables
* dbNotDefaultPaintTbl[] and dbNotDefaultEraseTbl[].
* ----------------------------------------------------------------------------
*/
void
dbComposeCompose(imageType, existingType, paintType)
TileType imageType;
TileType existingType;
TileType paintType;
{
int pNum = DBPlane(imageType);
if (PlaneMaskHasPlane(LayerPlaneMask(existingType), pNum))
{
dbSetPaintEntry(existingType, paintType, pNum, imageType);
TTMaskSetType(&dbNotDefaultPaintTbl[existingType], paintType);
}
}
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