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![Katayama Hirofumi MZ](/assets/img/avatar_default.png)
Check if the determinant of the given transformation matrix is non-zero. If zero, the function returns DDI_ERROR without change. CORE-15554
729 lines
18 KiB
C
729 lines
18 KiB
C
/*
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* PROJECT: ReactOS win32 kernel mode subsystem
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* LICENSE: GPL - See COPYING in the top level directory
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* FILE: win32ss/gdi/ntgdi/xformobj.c
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* PURPOSE: XFORMOBJ API
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* PROGRAMMERS: Timo Kreuzer
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* Katayama Hirofumi MZ
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*/
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/** Includes ******************************************************************/
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#include <win32k.h>
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#define NDEBUG
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#include <debug.h>
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#define DOES_VALUE_OVERFLOW_LONG(x) \
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(((__int64)((long)(x))) != (x))
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/** Inline helper functions ***************************************************/
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/*
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* Inline helper to calculate pfo1 * pfo2 + pfo3 * pfo4
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*/
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FORCEINLINE
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VOID
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MulAdd(
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PFLOATOBJ pfoDest,
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PFLOATOBJ pfo1,
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PFLOATOBJ pfo2,
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PFLOATOBJ pfo3,
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PFLOATOBJ pfo4)
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{
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FLOATOBJ foTmp;
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*pfoDest = *pfo1;
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FLOATOBJ_Mul(pfoDest, pfo2);
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foTmp = *pfo3;
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FLOATOBJ_Mul(&foTmp, pfo4);
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FLOATOBJ_Add(pfoDest, &foTmp);
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}
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/*
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* Inline helper to calculate pfo1 * l2 + pfo3 * l4
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*/
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FORCEINLINE
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VOID
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MulAddLong(
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PFLOATOBJ pfoDest,
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PFLOATOBJ pfo1,
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LONG l2,
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PFLOATOBJ pfo3,
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LONG l4)
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{
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FLOATOBJ foTmp;
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*pfoDest = *pfo1;
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FLOATOBJ_MulLong(pfoDest, l2);
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foTmp = *pfo3;
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FLOATOBJ_MulLong(&foTmp, l4);
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FLOATOBJ_Add(pfoDest, &foTmp);
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}
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/*
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* Inline helper to calculate pfo1 * pfo2 - pfo3 * pfo4
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*/
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FORCEINLINE
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VOID
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MulSub(
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PFLOATOBJ pfoDest,
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PFLOATOBJ pfo1,
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PFLOATOBJ pfo2,
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PFLOATOBJ pfo3,
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PFLOATOBJ pfo4)
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{
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FLOATOBJ foTmp;
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*pfoDest = *pfo1;
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FLOATOBJ_Mul(pfoDest, pfo2);
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foTmp = *pfo3;
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FLOATOBJ_Mul(&foTmp, pfo4);
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FLOATOBJ_Sub(pfoDest, &foTmp);
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}
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/*
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* Inline helper to get the complexity hint from flAccel
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*/
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FORCEINLINE
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ULONG
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HintFromAccel(ULONG flAccel)
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{
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switch (flAccel & (XFORM_SCALE|XFORM_UNITY|XFORM_NO_TRANSLATION))
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{
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case (XFORM_SCALE|XFORM_UNITY|XFORM_NO_TRANSLATION):
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return GX_IDENTITY;
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case (XFORM_SCALE|XFORM_UNITY):
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return GX_OFFSET;
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case XFORM_SCALE:
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return GX_SCALE;
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default:
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return GX_GENERAL;
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}
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}
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/** Internal functions ********************************************************/
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ULONG
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FASTCALL
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MX_UpdateAccel(IN OUT PMATRIX pmx)
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{
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/* Copy Dx and Dy to FIX format */
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pmx->fxDx = FLOATOBJ_GetFix(&pmx->efDx);
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pmx->fxDy = FLOATOBJ_GetFix(&pmx->efDy);
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pmx->flAccel = 0;
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if (FLOATOBJ_Equal0(&pmx->efDx) &&
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FLOATOBJ_Equal0(&pmx->efDy))
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{
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pmx->flAccel |= XFORM_NO_TRANSLATION;
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}
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if (FLOATOBJ_Equal0(&pmx->efM12) &&
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FLOATOBJ_Equal0(&pmx->efM21))
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{
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pmx->flAccel |= XFORM_SCALE;
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}
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if (FLOATOBJ_Equal1(&pmx->efM11) &&
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FLOATOBJ_Equal1(&pmx->efM22))
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{
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pmx->flAccel |= XFORM_UNITY;
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}
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if (FLOATOBJ_IsLong(&pmx->efM11) && FLOATOBJ_IsLong(&pmx->efM12) &&
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FLOATOBJ_IsLong(&pmx->efM21) && FLOATOBJ_IsLong(&pmx->efM22))
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{
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pmx->flAccel |= XFORM_INTEGER;
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}
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return HintFromAccel(pmx->flAccel);
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}
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ULONG
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NTAPI
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XFORMOBJ_UpdateAccel(
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IN OUT XFORMOBJ *pxo)
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{
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PMATRIX pmx = XFORMOBJ_pmx(pxo);
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return MX_UpdateAccel(pmx);
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}
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ULONG
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NTAPI
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XFORMOBJ_iSetXform(
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IN OUT XFORMOBJ *pxo,
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IN const XFORML *pxform)
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{
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PMATRIX pmx;
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MATRIX mxTemp;
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ULONG Hint;
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/* Check parameters */
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if (!pxo || !pxform) return DDI_ERROR;
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/* Copy members */
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FLOATOBJ_SetFloat(&mxTemp.efM11, pxform->eM11);
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FLOATOBJ_SetFloat(&mxTemp.efM12, pxform->eM12);
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FLOATOBJ_SetFloat(&mxTemp.efM21, pxform->eM21);
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FLOATOBJ_SetFloat(&mxTemp.efM22, pxform->eM22);
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FLOATOBJ_SetFloat(&mxTemp.efDx, pxform->eDx);
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FLOATOBJ_SetFloat(&mxTemp.efDy, pxform->eDy);
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/* Update accelerators and return complexity */
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Hint = MX_UpdateAccel(&mxTemp);
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/* Check whether det = (M11 * M22 - M12 * M21) is non-zero */
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if (Hint == GX_SCALE)
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{
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if (FLOATOBJ_Equal0(&mxTemp.efM11) || FLOATOBJ_Equal0(&mxTemp.efM22))
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{
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return DDI_ERROR;
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}
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}
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else if (Hint == GX_GENERAL)
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{
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if (!MX_IsInvertible(&mxTemp))
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{
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return DDI_ERROR;
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}
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}
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/* Store */
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pmx = XFORMOBJ_pmx(pxo);
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*pmx = mxTemp;
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return Hint;
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}
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/*
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* Multiplies pxo1 with pxo2 and stores the result in pxo.
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* returns complexity hint
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* | efM11 efM12 0 |
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* | efM21 efM22 0 |
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* | efDx efDy 1 |
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*/
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ULONG
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NTAPI
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XFORMOBJ_iCombine(
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IN OUT XFORMOBJ *pxo,
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IN XFORMOBJ *pxo1,
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IN XFORMOBJ *pxo2)
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{
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MATRIX mx;
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PMATRIX pmx, pmx1, pmx2;
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/* Get the source matrices */
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pmx1 = XFORMOBJ_pmx(pxo1);
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pmx2 = XFORMOBJ_pmx(pxo2);
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/* Do a 3 x 3 matrix multiplication with mx as destinantion */
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MulAdd(&mx.efM11, &pmx1->efM11, &pmx2->efM11, &pmx1->efM12, &pmx2->efM21);
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MulAdd(&mx.efM12, &pmx1->efM11, &pmx2->efM12, &pmx1->efM12, &pmx2->efM22);
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MulAdd(&mx.efM21, &pmx1->efM21, &pmx2->efM11, &pmx1->efM22, &pmx2->efM21);
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MulAdd(&mx.efM22, &pmx1->efM21, &pmx2->efM12, &pmx1->efM22, &pmx2->efM22);
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MulAdd(&mx.efDx, &pmx1->efDx, &pmx2->efM11, &pmx1->efDy, &pmx2->efM21);
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FLOATOBJ_Add(&mx.efDx, &pmx2->efDx);
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MulAdd(&mx.efDy, &pmx1->efDx, &pmx2->efM12, &pmx1->efDy, &pmx2->efM22);
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FLOATOBJ_Add(&mx.efDy, &pmx2->efDy);
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/* Copy back */
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pmx = XFORMOBJ_pmx(pxo);
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*pmx = mx;
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/* Update accelerators and return complexity */
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return XFORMOBJ_UpdateAccel(pxo);
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}
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ULONG
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NTAPI
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XFORMOBJ_iCombineXform(
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IN OUT XFORMOBJ *pxo,
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IN XFORMOBJ *pxo1,
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IN XFORML *pxform,
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IN BOOL bLeftMultiply)
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{
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MATRIX mx;
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XFORMOBJ xo2;
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XFORMOBJ_vInit(&xo2, &mx);
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XFORMOBJ_iSetXform(&xo2, pxform);
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if (bLeftMultiply)
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{
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return XFORMOBJ_iCombine(pxo, &xo2, pxo1);
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}
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else
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{
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return XFORMOBJ_iCombine(pxo, pxo1, &xo2);
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}
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}
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BOOL FASTCALL
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MX_IsInvertible(IN PMATRIX pmx)
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{
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FLOATOBJ foDet;
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MulSub(&foDet, &pmx->efM11, &pmx->efM22, &pmx->efM12, &pmx->efM21);
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return !FLOATOBJ_Equal0(&foDet);
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}
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VOID FASTCALL
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MX_Set0(OUT PMATRIX pmx)
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{
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FLOATOBJ_Set0(&pmx->efM11);
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FLOATOBJ_Set0(&pmx->efM12);
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FLOATOBJ_Set0(&pmx->efM21);
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FLOATOBJ_Set0(&pmx->efM22);
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FLOATOBJ_Set0(&pmx->efDx);
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FLOATOBJ_Set0(&pmx->efDy);
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}
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/*
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* A^-1 = adj(A) / det(AT)
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* A^-1 = 1/(a*d - b*c) * (a22,-a12,a21,-a11)
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*/
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ULONG
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NTAPI
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XFORMOBJ_iInverse(
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OUT XFORMOBJ *pxoDst,
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IN XFORMOBJ *pxoSrc)
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{
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PMATRIX pmxDst, pmxSrc;
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FLOATOBJ foDet;
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XFORM xformSrc;
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pmxDst = XFORMOBJ_pmx(pxoDst);
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pmxSrc = XFORMOBJ_pmx(pxoSrc);
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XFORMOBJ_iGetXform(pxoSrc, (XFORML*)&xformSrc);
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/* det = M11 * M22 - M12 * M21 */
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MulSub(&foDet, &pmxSrc->efM11, &pmxSrc->efM22, &pmxSrc->efM12, &pmxSrc->efM21);
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if (FLOATOBJ_Equal0(&foDet))
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{
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/* Determinant is 0! */
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return DDI_ERROR;
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}
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/* Calculate adj(A) / det(A) */
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pmxDst->efM11 = pmxSrc->efM22;
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FLOATOBJ_Div(&pmxDst->efM11, &foDet);
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pmxDst->efM22 = pmxSrc->efM11;
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FLOATOBJ_Div(&pmxDst->efM22, &foDet);
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/* The other 2 are negative, negate foDet for that */
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FLOATOBJ_Neg(&foDet);
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pmxDst->efM12 = pmxSrc->efM12;
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FLOATOBJ_Div(&pmxDst->efM12, &foDet);
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pmxDst->efM21 = pmxSrc->efM21;
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FLOATOBJ_Div(&pmxDst->efM21, &foDet);
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/* Calculate the inverted x shift: Dx' = -Dx * M11' - Dy * M21' */
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pmxDst->efDx = pmxSrc->efDx;
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FLOATOBJ_Neg(&pmxDst->efDx);
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MulSub(&pmxDst->efDx, &pmxDst->efDx, &pmxDst->efM11, &pmxSrc->efDy, &pmxDst->efM21);
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/* Calculate the inverted y shift: Dy' = -Dy * M22' - Dx * M12' */
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pmxDst->efDy = pmxSrc->efDy;
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FLOATOBJ_Neg(&pmxDst->efDy);
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MulSub(&pmxDst->efDy, &pmxDst->efDy, &pmxDst->efM22, &pmxSrc->efDx, &pmxDst->efM12);
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/* Update accelerators and return complexity */
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return XFORMOBJ_UpdateAccel(pxoDst);
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}
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/*!
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* \brief Transforms fix-point coordinates in an array of POINTL structures using
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* the transformation matrix from the XFORMOBJ.
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*
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* \param pxo - Pointer to the XFORMOBJ
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*
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* \param cPoints - Number of coordinates to transform
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*
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* \param pptIn - Pointer to an array of POINTL structures containing the
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* source coordinates.
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*
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* \param pptOut - Pointer to an array of POINTL structures, receiving the
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* transformed coordinates. Can be the same as pptIn.
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*
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* \return TRUE if the operation was successful, FALSE if any of the calculations
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* caused an integer overflow.
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*
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* \note If the function returns FALSE, it might still have written to the
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* output buffer. If pptIn and pptOut are equal, the source coordinates
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* might have been partly overwritten!
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*/
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static
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BOOL
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NTAPI
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XFORMOBJ_bXformFixPoints(
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_In_ XFORMOBJ *pxo,
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_In_ ULONG cPoints,
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_In_reads_(cPoints) PPOINTL pptIn,
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_Out_writes_(cPoints) PPOINTL pptOut)
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{
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PMATRIX pmx;
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INT i;
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FLOATOBJ fo1, fo2;
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FLONG flAccel;
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LONG lM11, lM12, lM21, lM22, lTemp;
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register LONGLONG llx, lly;
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pmx = XFORMOBJ_pmx(pxo);
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flAccel = pmx->flAccel;
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if ((flAccel & (XFORM_SCALE|XFORM_UNITY)) == (XFORM_SCALE|XFORM_UNITY))
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{
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/* Identity transformation */
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RtlCopyMemory(pptOut, pptIn, cPoints * sizeof(POINTL));
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}
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else if (flAccel & XFORM_INTEGER)
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{
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if (flAccel & XFORM_UNITY)
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{
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/* 1-scale integer transform, get the off-diagonal elements */
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if (!FLOATOBJ_bConvertToLong(&pmx->efM12, &lM12) ||
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!FLOATOBJ_bConvertToLong(&pmx->efM21, &lM21))
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{
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NT_ASSERT(FALSE);
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return FALSE;
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}
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i = cPoints - 1;
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do
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{
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/* Calculate x in 64 bit and check for overflow */
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llx = Int32x32To64(pptIn[i].y, lM21) + pptIn[i].x;
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if (DOES_VALUE_OVERFLOW_LONG(llx))
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{
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return FALSE;
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}
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/* Calculate y in 64 bit and check for overflow */
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lly = Int32x32To64(pptIn[i].x, lM12) + pptIn[i].y;
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if (DOES_VALUE_OVERFLOW_LONG(lly))
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{
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return FALSE;
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}
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/* Write back the results */
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pptOut[i].x = (LONG)llx;
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pptOut[i].y = (LONG)lly;
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}
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while (--i >= 0);
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}
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else if (flAccel & XFORM_SCALE)
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{
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/* Diagonal integer transform, get the diagonal elements */
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if (!FLOATOBJ_bConvertToLong(&pmx->efM11, &lM11) ||
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!FLOATOBJ_bConvertToLong(&pmx->efM22, &lM22))
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{
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NT_ASSERT(FALSE);
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return FALSE;
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}
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i = cPoints - 1;
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do
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{
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/* Calculate x in 64 bit and check for overflow */
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llx = Int32x32To64(pptIn[i].x, lM11);
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if (DOES_VALUE_OVERFLOW_LONG(llx))
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{
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return FALSE;
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}
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/* Calculate y in 64 bit and check for overflow */
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lly = Int32x32To64(pptIn[i].y, lM22);
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if (DOES_VALUE_OVERFLOW_LONG(lly))
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{
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return FALSE;
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}
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/* Write back the results */
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pptOut[i].x = (LONG)llx;
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pptOut[i].y = (LONG)lly;
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}
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while (--i >= 0);
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}
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else
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{
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/* Full integer transform */
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if (!FLOATOBJ_bConvertToLong(&pmx->efM11, &lM11) ||
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!FLOATOBJ_bConvertToLong(&pmx->efM12, &lM12) ||
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!FLOATOBJ_bConvertToLong(&pmx->efM21, &lM21) ||
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!FLOATOBJ_bConvertToLong(&pmx->efM22, &lM22))
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{
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NT_ASSERT(FALSE);
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return FALSE;
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}
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i = cPoints - 1;
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do
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{
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/* Calculate x in 64 bit and check for overflow */
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llx = Int32x32To64(pptIn[i].x, lM11);
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llx += Int32x32To64(pptIn[i].y, lM21);
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if (DOES_VALUE_OVERFLOW_LONG(llx))
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{
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return FALSE;
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}
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/* Calculate y in 64 bit and check for overflow */
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lly = Int32x32To64(pptIn[i].y, lM22);
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lly += Int32x32To64(pptIn[i].x, lM12);
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if (DOES_VALUE_OVERFLOW_LONG(lly))
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{
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return FALSE;
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}
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/* Write back the results */
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pptOut[i].x = (LONG)llx;
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pptOut[i].y = (LONG)lly;
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}
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while (--i >= 0);
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}
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}
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else if (flAccel & XFORM_UNITY)
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{
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/* 1-scale transform */
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i = cPoints - 1;
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do
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{
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/* Calculate x in 64 bit and check for overflow */
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|
fo1 = pmx->efM21;
|
|
FLOATOBJ_MulLong(&fo1, pptIn[i].y);
|
|
if (!FLOATOBJ_bConvertToLong(&fo1, &lTemp))
|
|
{
|
|
return FALSE;
|
|
}
|
|
llx = (LONGLONG)pptIn[i].x + lTemp;
|
|
if (DOES_VALUE_OVERFLOW_LONG(llx))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
/* Calculate y in 64 bit and check for overflow */
|
|
fo2 = pmx->efM12;
|
|
FLOATOBJ_MulLong(&fo2, pptIn[i].x);
|
|
if (!FLOATOBJ_bConvertToLong(&fo2, &lTemp))
|
|
{
|
|
return FALSE;
|
|
}
|
|
lly = (LONGLONG)pptIn[i].y + lTemp;
|
|
if (DOES_VALUE_OVERFLOW_LONG(lly))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
/* Write back the results */
|
|
pptOut[i].x = (LONG)llx;
|
|
pptOut[i].y = (LONG)lly;
|
|
}
|
|
while (--i >= 0);
|
|
}
|
|
else if (flAccel & XFORM_SCALE)
|
|
{
|
|
/* Diagonal float transform */
|
|
i = cPoints - 1;
|
|
do
|
|
{
|
|
fo1 = pmx->efM11;
|
|
FLOATOBJ_MulLong(&fo1, pptIn[i].x);
|
|
if (!FLOATOBJ_bConvertToLong(&fo1, &pptOut[i].x))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
fo2 = pmx->efM22;
|
|
FLOATOBJ_MulLong(&fo2, pptIn[i].y);
|
|
if (!FLOATOBJ_bConvertToLong(&fo2, &pptOut[i].y))
|
|
{
|
|
return FALSE;
|
|
}
|
|
}
|
|
while (--i >= 0);
|
|
}
|
|
else
|
|
{
|
|
/* Full float transform */
|
|
i = cPoints - 1;
|
|
do
|
|
{
|
|
/* Calculate x as FLOATOBJ */
|
|
MulAddLong(&fo1, &pmx->efM11, pptIn[i].x, &pmx->efM21, pptIn[i].y);
|
|
|
|
/* Calculate y as FLOATOBJ */
|
|
MulAddLong(&fo2, &pmx->efM12, pptIn[i].x, &pmx->efM22, pptIn[i].y);
|
|
|
|
if (!FLOATOBJ_bConvertToLong(&fo1, &pptOut[i].x))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
if (!FLOATOBJ_bConvertToLong(&fo2, &pptOut[i].y))
|
|
{
|
|
return FALSE;
|
|
}
|
|
}
|
|
while (--i >= 0);
|
|
}
|
|
|
|
if (!(pmx->flAccel & XFORM_NO_TRANSLATION))
|
|
{
|
|
/* Translate points */
|
|
i = cPoints - 1;
|
|
do
|
|
{
|
|
llx = (LONGLONG)pptOut[i].x + pmx->fxDx;
|
|
if (DOES_VALUE_OVERFLOW_LONG(llx))
|
|
{
|
|
return FALSE;
|
|
}
|
|
pptOut[i].x = (LONG)llx;
|
|
|
|
lly = (LONGLONG)pptOut[i].y + pmx->fxDy;
|
|
if (DOES_VALUE_OVERFLOW_LONG(lly))
|
|
{
|
|
return FALSE;
|
|
}
|
|
pptOut[i].y = (LONG)lly;
|
|
}
|
|
while (--i >= 0);
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/** Public functions **********************************************************/
|
|
|
|
// www.osr.com/ddk/graphics/gdifncs_0s2v.htm
|
|
ULONG
|
|
APIENTRY
|
|
XFORMOBJ_iGetXform(
|
|
IN XFORMOBJ *pxo,
|
|
OUT XFORML *pxform)
|
|
{
|
|
PMATRIX pmx = XFORMOBJ_pmx(pxo);
|
|
|
|
/* Check parameters */
|
|
if (!pxo || !pxform)
|
|
{
|
|
return DDI_ERROR;
|
|
}
|
|
|
|
/* Copy members */
|
|
pxform->eM11 = FLOATOBJ_GetFloat(&pmx->efM11);
|
|
pxform->eM12 = FLOATOBJ_GetFloat(&pmx->efM12);
|
|
pxform->eM21 = FLOATOBJ_GetFloat(&pmx->efM21);
|
|
pxform->eM22 = FLOATOBJ_GetFloat(&pmx->efM22);
|
|
pxform->eDx = FLOATOBJ_GetFloat(&pmx->efDx);
|
|
pxform->eDy = FLOATOBJ_GetFloat(&pmx->efDy);
|
|
|
|
/* Return complexity hint */
|
|
return HintFromAccel(pmx->flAccel);
|
|
}
|
|
|
|
|
|
// www.osr.com/ddk/graphics/gdifncs_5ig7.htm
|
|
ULONG
|
|
APIENTRY
|
|
XFORMOBJ_iGetFloatObjXform(
|
|
IN XFORMOBJ *pxo,
|
|
OUT FLOATOBJ_XFORM *pxfo)
|
|
{
|
|
PMATRIX pmx = XFORMOBJ_pmx(pxo);
|
|
|
|
/* Check parameters */
|
|
if (!pxo || !pxfo)
|
|
{
|
|
return DDI_ERROR;
|
|
}
|
|
|
|
/* Copy members */
|
|
pxfo->eM11 = pmx->efM11;
|
|
pxfo->eM12 = pmx->efM12;
|
|
pxfo->eM21 = pmx->efM21;
|
|
pxfo->eM22 = pmx->efM22;
|
|
pxfo->eDx = pmx->efDx;
|
|
pxfo->eDy = pmx->efDy;
|
|
|
|
/* Return complexity hint */
|
|
return HintFromAccel(pmx->flAccel);
|
|
}
|
|
|
|
|
|
// www.osr.com/ddk/graphics/gdifncs_027b.htm
|
|
BOOL
|
|
APIENTRY
|
|
XFORMOBJ_bApplyXform(
|
|
IN XFORMOBJ *pxo,
|
|
IN ULONG iMode,
|
|
IN ULONG cPoints,
|
|
IN PVOID pvIn,
|
|
OUT PVOID pvOut)
|
|
{
|
|
MATRIX mx;
|
|
XFORMOBJ xoInv;
|
|
PPOINTL pptlIn, pptlOut;
|
|
INT i;
|
|
|
|
/* Check parameters */
|
|
if (!pxo || !pvIn || !pvOut || cPoints < 1)
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
/* Use inverse xform? */
|
|
if (iMode == XF_INV_FXTOL || iMode == XF_INV_LTOL)
|
|
{
|
|
XFORMOBJ_vInit(&xoInv, &mx);
|
|
if (XFORMOBJ_iInverse(&xoInv, pxo) == DDI_ERROR)
|
|
{
|
|
return FALSE;
|
|
}
|
|
pxo = &xoInv;
|
|
}
|
|
|
|
/* Convert POINTL to POINTFIX? */
|
|
if (iMode == XF_LTOFX || iMode == XF_LTOL || iMode == XF_INV_LTOL)
|
|
{
|
|
pptlIn = pvIn;
|
|
pptlOut = pvOut;
|
|
for (i = cPoints - 1; i >= 0; i--)
|
|
{
|
|
pptlOut[i].x = LONG2FIX(pptlIn[i].x);
|
|
pptlOut[i].y = LONG2FIX(pptlIn[i].y);
|
|
}
|
|
|
|
/* The input is in the out buffer now! */
|
|
pvIn = pvOut;
|
|
}
|
|
|
|
/* Do the actual fixpoint transformation */
|
|
if (!XFORMOBJ_bXformFixPoints(pxo, cPoints, pvIn, pvOut))
|
|
{
|
|
return FALSE;
|
|
}
|
|
|
|
/* Convert POINTFIX to POINTL? */
|
|
if (iMode == XF_INV_FXTOL || iMode == XF_INV_LTOL || iMode == XF_LTOL)
|
|
{
|
|
pptlOut = pvOut;
|
|
for (i = cPoints - 1; i >= 0; i--)
|
|
{
|
|
pptlOut[i].x = FIX2LONG(pptlOut[i].x);
|
|
pptlOut[i].y = FIX2LONG(pptlOut[i].y);
|
|
}
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* EOF */
|