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Initial revision
This commit is contained in:
Kaleb Keithley
parent
ded6147bfb
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982 changed files with 479777 additions and 0 deletions
701
ilbm/ilbmline.c
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701
ilbm/ilbmline.c
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/* $XFree86: xc/programs/Xserver/ilbm/ilbmline.c,v 3.1 1998/03/20 21:08:02 hohndel Exp $ */
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/***********************************************************
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Copyright (c) 1987 X Consortium
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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||||
copies of the Software, and to permit persons to whom the Software is
|
||||
furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
|
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all copies or substantial portions of the Software.
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||||
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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Except as contained in this notice, the name of the X Consortium shall not be
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used in advertising or otherwise to promote the sale, use or other dealings
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in this Software without prior written authorization from the X Consortium.
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Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
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All Rights Reserved
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Permission to use, copy, modify, and distribute this software and its
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documentation for any purpose and without fee is hereby granted,
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||||
provided that the above copyright notice appear in all copies and that
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||||
both that copyright notice and this permission notice appear in
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||||
supporting documentation, and that the name of Digital not be
|
||||
used in advertising or publicity pertaining to distribution of the
|
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software without specific, written prior permission.
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DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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||||
ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
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DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
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ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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SOFTWARE.
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******************************************************************/
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/* $XConsortium: ilbmline.c,v 5.18 94/04/17 20:28:26 dpw Exp $ */
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/* Modified jun 95 by Geert Uytterhoeven (Geert.Uytterhoeven@cs.kuleuven.ac.be)
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to use interleaved bitplanes instead of normal bitplanes */
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#include "X.h"
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#include "gcstruct.h"
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#include "windowstr.h"
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#include "pixmapstr.h"
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#include "regionstr.h"
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#include "scrnintstr.h"
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#include "mistruct.h"
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#include "ilbm.h"
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#include "maskbits.h"
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#include "miline.h"
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/* single-pixel lines on a color frame buffer
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NON-SLOPED LINES
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horizontal lines are always drawn left to right; we have to
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move the endpoints right by one after they're swapped.
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horizontal lines will be confined to a single band of a
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region. the code finds that band (giving up if the lower
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bound of the band is above the line we're drawing); then it
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finds the first box in that band that contains part of the
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line. we clip the line to subsequent boxes in that band.
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vertical lines are always drawn top to bottom (y-increasing.)
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this requires adding one to the y-coordinate of each endpoint
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after swapping.
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SLOPED LINES
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when clipping a sloped line, we bring the second point inside
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the clipping box, rather than one beyond it, and then add 1 to
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the length of the line before drawing it. this lets us use
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the same box for finding the outcodes for both endpoints. since
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the equation for clipping the second endpoint to an edge gives us
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1 beyond the edge, we then have to move the point towards the
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first point by one step on the major axis.
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eventually, there will be a diagram here to explain what's going
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on. the method uses Cohen-Sutherland outcodes to determine
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outsideness, and a method similar to Pike's layers for doing the
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actual clipping.
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*/
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void
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#ifdef POLYSEGMENT
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ilbmSegmentSS(pDrawable, pGC, nseg, pSeg)
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DrawablePtr pDrawable;
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GCPtr pGC;
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int nseg;
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register xSegment *pSeg;
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#else
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ilbmLineSS(pDrawable, pGC, mode, npt, pptInit)
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DrawablePtr pDrawable;
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GCPtr pGC;
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int mode; /* Origin or Previous */
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int npt; /* number of points */
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DDXPointPtr pptInit;
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#endif
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{
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int nboxInit;
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register int nbox;
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BoxPtr pboxInit;
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register BoxPtr pbox;
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#ifndef POLYSEGMENT
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register DDXPointPtr ppt; /* pointer to list of translated points */
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#endif
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unsigned int oc1; /* outcode of point 1 */
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unsigned int oc2; /* outcode of point 2 */
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PixelType *addrlBase; /* pointer to start of drawable */
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PixelType *addrl; /* address of destination pixmap */
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int nlwidth; /* width in longwords of destination pixmap */
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int xorg, yorg; /* origin of window */
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int adx; /* abs values of dx and dy */
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int ady;
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int signdx; /* sign of dx and dy */
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int signdy;
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int e, e1, e2; /* bresenham error and increments */
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int len; /* length of segment */
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int axis; /* major axis */
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int octant;
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unsigned int bias = miGetZeroLineBias(pDrawable->pScreen);
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int depthDst;
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int d;
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int auxDst;
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unsigned char *rrops;
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/* a bunch of temporaries */
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register int y1, y2;
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register int x1, x2;
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RegionPtr cclip;
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cclip = pGC->pCompositeClip;
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rrops = ((ilbmPrivGC *)(pGC->devPrivates[ilbmGCPrivateIndex].ptr))->rrops;
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pboxInit = REGION_RECTS(cclip);
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nboxInit = REGION_NUM_RECTS(cclip);
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ilbmGetPixelWidthAuxDepthAndPointer(pDrawable, nlwidth, auxDst, depthDst,
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addrlBase);
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xorg = pDrawable->x;
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yorg = pDrawable->y;
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#ifdef POLYSEGMENT
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while (nseg--)
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#else
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ppt = pptInit;
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x2 = ppt->x + xorg;
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y2 = ppt->y + yorg;
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while (--npt)
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#endif
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{
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nbox = nboxInit;
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pbox = pboxInit;
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#ifdef POLYSEGMENT
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x1 = pSeg->x1 + xorg;
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y1 = pSeg->y1 + yorg;
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x2 = pSeg->x2 + xorg;
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y2 = pSeg->y2 + yorg;
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pSeg++;
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#else
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x1 = x2;
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y1 = y2;
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++ppt;
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if (mode == CoordModePrevious) {
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xorg = x1;
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yorg = y1;
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}
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x2 = ppt->x + xorg;
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y2 = ppt->y + yorg;
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#endif
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if (x1 == x2) /* vertical line */
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{
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/* make the line go top to bottom of screen, keeping
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endpoint semantics
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*/
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if (y1 > y2) {
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register int tmp;
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tmp = y2;
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y2 = y1 + 1;
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y1 = tmp + 1;
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#ifdef POLYSEGMENT
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if (pGC->capStyle != CapNotLast)
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y1--;
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#endif
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}
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#ifdef POLYSEGMENT
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else if (pGC->capStyle != CapNotLast)
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y2++;
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#endif
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/* get to first band that might contain part of line */
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while ((nbox) && (pbox->y2 <= y1)) {
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pbox++;
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nbox--;
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}
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if (nbox) {
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/* stop when lower edge of box is beyond end of line */
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while ((nbox) && (y2 >= pbox->y1)) {
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if ((x1 >= pbox->x1) && (x1 < pbox->x2)) {
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int y1t, y2t;
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/* this box has part of the line in it */
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y1t = max(y1, pbox->y1);
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y2t = min(y2, pbox->y2);
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if (y1t != y2t)
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ilbmVertS(addrlBase, nlwidth, auxDst, depthDst, x1, y1t,
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y2t-y1t, rrops); /* @@@ NEXT PLANE PASSED @@@ */
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}
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nbox--;
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pbox++;
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}
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}
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#ifndef POLYSEGMENT
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y2 = ppt->y + yorg;
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#endif
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} else if (y1 == y2) /* horizontal line */ {
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/* force line from left to right, keeping
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endpoint semantics
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*/
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if (x1 > x2) {
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register int tmp;
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tmp = x2;
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x2 = x1 + 1;
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x1 = tmp + 1;
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#ifdef POLYSEGMENT
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if (pGC->capStyle != CapNotLast)
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x1--;
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#endif
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}
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#ifdef POLYSEGMENT
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else if (pGC->capStyle != CapNotLast)
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x2++;
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#endif
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/* find the correct band */
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while ((nbox) && (pbox->y2 <= y1)) {
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pbox++;
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nbox--;
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}
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/* try to draw the line, if we haven't gone beyond it */
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if ((nbox) && (pbox->y1 <= y1)) {
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int tmp;
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/* when we leave this band, we're done */
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tmp = pbox->y1;
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while ((nbox) && (pbox->y1 == tmp)) {
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int x1t, x2t;
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if (pbox->x2 <= x1) {
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/* skip boxes until one might contain start point */
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nbox--;
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pbox++;
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continue;
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}
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/* stop if left of box is beyond right of line */
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if (pbox->x1 >= x2) {
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nbox = 0;
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break;
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}
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x1t = max(x1, pbox->x1);
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x2t = min(x2, pbox->x2);
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if (x1t != x2t)
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ilbmHorzS(addrlBase, nlwidth, auxDst, depthDst, x1t, y1,
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x2t-x1t, rrops); /* @@@ NEXT PLANE PASSED @@@ */
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nbox--;
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pbox++;
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}
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}
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#ifndef POLYSEGMENT
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x2 = ppt->x + xorg;
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#endif
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}
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else /* sloped line */
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{
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CalcLineDeltas(x1, y1, x2, y2, adx, ady,
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signdx, signdy, 1, 1, octant);
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if (adx > ady) {
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axis = X_AXIS;
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e1 = ady << 1;
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e2 = e1 - (adx << 1);
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e = e1 - adx;
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} else {
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axis = Y_AXIS;
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e1 = adx << 1;
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e2 = e1 - (ady << 1);
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e = e1 - ady;
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SetYMajorOctant(octant);
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}
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|
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FIXUP_ERROR(e, octant, bias);
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/* we have bresenham parameters and two points.
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all we have to do now is clip and draw.
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*/
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while (nbox--) {
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oc1 = 0;
|
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oc2 = 0;
|
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OUTCODES(oc1, x1, y1, pbox);
|
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OUTCODES(oc2, x2, y2, pbox);
|
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if ((oc1 | oc2) == 0) {
|
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if (axis == X_AXIS)
|
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len = adx;
|
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else
|
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len = ady;
|
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#ifdef POLYSEGMENT
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if (pGC->capStyle != CapNotLast)
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len++;
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#endif
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ilbmBresS(addrlBase, nlwidth, auxDst, depthDst, signdx, signdy,
|
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axis, x1, y1, e, e1, e2, len, rrops); /* @@@ NEXT PLANE PASSED @@@ */
|
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break;
|
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} else if (oc1 & oc2) {
|
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pbox++;
|
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} else {
|
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int new_x1 = x1, new_y1 = y1, new_x2 = x2, new_y2 = y2;
|
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int clip1 = 0, clip2 = 0;
|
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int clipdx, clipdy;
|
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int err;
|
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|
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if (miZeroClipLine(pbox->x1, pbox->y1, pbox->x2-1,
|
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pbox->y2-1,
|
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&new_x1, &new_y1, &new_x2, &new_y2,
|
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adx, ady, &clip1, &clip2,
|
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octant, bias, oc1, oc2) == -1) {
|
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pbox++;
|
||||
continue;
|
||||
}
|
||||
|
||||
if (axis == X_AXIS)
|
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len = abs(new_x2 - new_x1);
|
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else
|
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len = abs(new_y2 - new_y1);
|
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#ifdef POLYSEGMENT
|
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if (clip2 != 0 || pGC->capStyle != CapNotLast)
|
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len++;
|
||||
#else
|
||||
len += (clip2 != 0);
|
||||
#endif
|
||||
if (len) {
|
||||
/* unwind bresenham error term to first point */
|
||||
if (clip1) {
|
||||
clipdx = abs(new_x1 - x1);
|
||||
clipdy = abs(new_y1 - y1);
|
||||
if (axis == X_AXIS)
|
||||
err = e+((clipdy*e2) + ((clipdx-clipdy)*e1));
|
||||
else
|
||||
err = e+((clipdx*e2) + ((clipdy-clipdx)*e1));
|
||||
}
|
||||
else
|
||||
err = e;
|
||||
ilbmBresS(addrlBase, nlwidth, auxDst, depthDst, signdx,
|
||||
signdy, axis, new_x1, new_y1, err, e1, e2, len,
|
||||
rrops); /* @@@ NEXT PLANE PASSED @@@ */
|
||||
}
|
||||
pbox++;
|
||||
}
|
||||
} /* while (nbox--) */
|
||||
} /* sloped line */
|
||||
} /* while (nline--) */
|
||||
|
||||
#ifndef POLYSEGMENT
|
||||
|
||||
/* paint the last point if the end style isn't CapNotLast.
|
||||
(Assume that a projecting, butt, or round cap that is one
|
||||
pixel wide is the same as the single pixel of the endpoint.)
|
||||
*/
|
||||
|
||||
if ((pGC->capStyle != CapNotLast) &&
|
||||
((ppt->x + xorg != pptInit->x + pDrawable->x) ||
|
||||
(ppt->y + yorg != pptInit->y + pDrawable->y) ||
|
||||
(ppt == pptInit + 1))) {
|
||||
nbox = nboxInit;
|
||||
pbox = pboxInit;
|
||||
while (nbox--) {
|
||||
if ((x2 >= pbox->x1) && (y2 >= pbox->y1) && (x2 < pbox->x2) &&
|
||||
(y2 < pbox->y2)) {
|
||||
for (d = 0; d < depthDst; d++) {
|
||||
addrl = ilbmScanline(addrlBase, x2, y2, auxDst);
|
||||
addrlBase += nlwidth; /* @@@ NEXT PLANE @@@ */
|
||||
|
||||
switch (rrops[d]) {
|
||||
case RROP_BLACK:
|
||||
*addrl &= rmask[x2 & PIM];
|
||||
break;
|
||||
case RROP_WHITE:
|
||||
*addrl |= mask[x2 & PIM];
|
||||
break;
|
||||
case RROP_INVERT:
|
||||
*addrl ^= mask[x2 & PIM];
|
||||
break;
|
||||
case RROP_NOP:
|
||||
break;
|
||||
} /* switch */
|
||||
} /* for (d = ...) */
|
||||
break;
|
||||
} else
|
||||
pbox++;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
* Draw dashed 1-pixel lines.
|
||||
*/
|
||||
|
||||
void
|
||||
#ifdef POLYSEGMENT
|
||||
ilbmSegmentSD(pDrawable, pGC, nseg, pSeg)
|
||||
DrawablePtr pDrawable;
|
||||
register GCPtr pGC;
|
||||
int nseg;
|
||||
register xSegment *pSeg;
|
||||
#else
|
||||
ilbmLineSD(pDrawable, pGC, mode, npt, pptInit)
|
||||
DrawablePtr pDrawable;
|
||||
register GCPtr pGC;
|
||||
int mode; /* Origin or Previous */
|
||||
int npt; /* number of points */
|
||||
DDXPointPtr pptInit;
|
||||
#endif
|
||||
{
|
||||
int nboxInit;
|
||||
register int nbox;
|
||||
BoxPtr pboxInit;
|
||||
register BoxPtr pbox;
|
||||
#ifndef POLYSEGMENT
|
||||
register DDXPointPtr ppt; /* pointer to list of translated points */
|
||||
#endif
|
||||
|
||||
register unsigned int oc1; /* outcode of point 1 */
|
||||
register unsigned int oc2; /* outcode of point 2 */
|
||||
|
||||
PixelType *addrlBase; /* address of destination pixmap */
|
||||
PixelType *addrl;
|
||||
int nlwidth; /* width in longwords of destination pixmap */
|
||||
int auxDst;
|
||||
int depthDst;
|
||||
int xorg, yorg; /* origin of window */
|
||||
|
||||
int adx; /* abs values of dx and dy */
|
||||
int ady;
|
||||
int signdx; /* sign of dx and dy */
|
||||
int signdy;
|
||||
int e, e1, e2; /* bresenham error and increments */
|
||||
int len; /* length of segment */
|
||||
int axis; /* major axis */
|
||||
int octant;
|
||||
unsigned int bias = miGetZeroLineBias(pDrawable->pScreen);
|
||||
int x1, x2, y1, y2;
|
||||
RegionPtr cclip;
|
||||
unsigned char *rrops;
|
||||
unsigned char bgrrops[AFB_MAX_DEPTH];
|
||||
unsigned char *pDash;
|
||||
int dashOffset;
|
||||
int numInDashList;
|
||||
int dashIndex;
|
||||
int isDoubleDash;
|
||||
int dashIndexTmp, dashOffsetTmp;
|
||||
int unclippedlen;
|
||||
int d;
|
||||
|
||||
cclip = pGC->pCompositeClip;
|
||||
rrops = ((ilbmPrivGC *)(pGC->devPrivates[ilbmGCPrivateIndex].ptr))->rrops;
|
||||
pboxInit = REGION_RECTS(cclip);
|
||||
nboxInit = REGION_NUM_RECTS(cclip);
|
||||
|
||||
ilbmGetPixelWidthAuxDepthAndPointer(pDrawable, nlwidth, auxDst, depthDst,
|
||||
addrlBase);
|
||||
|
||||
/* compute initial dash values */
|
||||
|
||||
pDash = (unsigned char *) pGC->dash;
|
||||
numInDashList = pGC->numInDashList;
|
||||
isDoubleDash = (pGC->lineStyle == LineDoubleDash);
|
||||
dashIndex = 0;
|
||||
dashOffset = 0;
|
||||
miStepDash ((int)pGC->dashOffset, &dashIndex, pDash,
|
||||
numInDashList, &dashOffset);
|
||||
|
||||
if (isDoubleDash)
|
||||
ilbmReduceRop (pGC->alu, pGC->bgPixel, pGC->planemask, pGC->depth,
|
||||
bgrrops);
|
||||
|
||||
xorg = pDrawable->x;
|
||||
yorg = pDrawable->y;
|
||||
#ifdef POLYSEGMENT
|
||||
while (nseg--)
|
||||
#else
|
||||
ppt = pptInit;
|
||||
x2 = ppt->x + xorg;
|
||||
y2 = ppt->y + yorg;
|
||||
while (--npt)
|
||||
#endif
|
||||
{
|
||||
nbox = nboxInit;
|
||||
pbox = pboxInit;
|
||||
|
||||
#ifdef POLYSEGMENT
|
||||
x1 = pSeg->x1 + xorg;
|
||||
y1 = pSeg->y1 + yorg;
|
||||
x2 = pSeg->x2 + xorg;
|
||||
y2 = pSeg->y2 + yorg;
|
||||
pSeg++;
|
||||
#else
|
||||
x1 = x2;
|
||||
y1 = y2;
|
||||
++ppt;
|
||||
if (mode == CoordModePrevious) {
|
||||
xorg = x1;
|
||||
yorg = y1;
|
||||
}
|
||||
x2 = ppt->x + xorg;
|
||||
y2 = ppt->y + yorg;
|
||||
#endif
|
||||
|
||||
CalcLineDeltas(x1, y1, x2, y2, adx, ady, signdx, signdy,
|
||||
1, 1, octant);
|
||||
|
||||
if (adx > ady) {
|
||||
axis = X_AXIS;
|
||||
e1 = ady << 1;
|
||||
e2 = e1 - (adx << 1);
|
||||
e = e1 - adx;
|
||||
unclippedlen = adx;
|
||||
} else {
|
||||
axis = Y_AXIS;
|
||||
e1 = adx << 1;
|
||||
e2 = e1 - (ady << 1);
|
||||
e = e1 - ady;
|
||||
unclippedlen = ady;
|
||||
SetYMajorOctant(octant);
|
||||
}
|
||||
|
||||
FIXUP_ERROR(e, octant, bias);
|
||||
|
||||
/* we have bresenham parameters and two points.
|
||||
all we have to do now is clip and draw.
|
||||
*/
|
||||
|
||||
while (nbox--) {
|
||||
oc1 = 0;
|
||||
oc2 = 0;
|
||||
OUTCODES(oc1, x1, y1, pbox);
|
||||
OUTCODES(oc2, x2, y2, pbox);
|
||||
if ((oc1 | oc2) == 0) {
|
||||
#ifdef POLYSEGMENT
|
||||
if (pGC->capStyle != CapNotLast)
|
||||
unclippedlen++;
|
||||
dashIndexTmp = dashIndex;
|
||||
dashOffsetTmp = dashOffset;
|
||||
ilbmBresD(&dashIndexTmp, pDash, numInDashList, &dashOffsetTmp,
|
||||
isDoubleDash, addrlBase, nlwidth, auxDst, depthDst,
|
||||
signdx, signdy, axis, x1, y1, e, e1, e2, unclippedlen,
|
||||
rrops, bgrrops); /* @@@ NEXT PLANE PASSED @@@ */
|
||||
break;
|
||||
#else
|
||||
ilbmBresD(&dashIndex, pDash, numInDashList, &dashOffset,
|
||||
isDoubleDash, addrlBase, nlwidth, auxDst, depthDst,
|
||||
signdx, signdy, axis, x1, y1, e, e1, e2, unclippedlen,
|
||||
rrops, bgrrops); /* @@@ NEXT PLANE PASSED @@@ */
|
||||
goto dontStep;
|
||||
#endif
|
||||
} else if (oc1 & oc2) {
|
||||
pbox++;
|
||||
} else /* have to clip */ {
|
||||
int new_x1 = x1, new_y1 = y1, new_x2 = x2, new_y2 = y2;
|
||||
int clip1 = 0, clip2 = 0;
|
||||
int clipdx, clipdy;
|
||||
int err;
|
||||
|
||||
if (miZeroClipLine(pbox->x1, pbox->y1, pbox->x2-1, pbox->y2-1,
|
||||
&new_x1, &new_y1, &new_x2, &new_y2,
|
||||
adx, ady, &clip1, &clip2,
|
||||
octant, bias, oc1, oc2) == -1) {
|
||||
pbox++;
|
||||
continue;
|
||||
}
|
||||
dashIndexTmp = dashIndex;
|
||||
dashOffsetTmp = dashOffset;
|
||||
if (clip1) {
|
||||
int dlen;
|
||||
|
||||
if (axis == X_AXIS)
|
||||
dlen = abs(new_x1 - x1);
|
||||
else
|
||||
dlen = abs(new_y1 - y1);
|
||||
miStepDash (dlen, &dashIndexTmp, pDash,
|
||||
numInDashList, &dashOffsetTmp);
|
||||
}
|
||||
if (axis == X_AXIS)
|
||||
len = abs(new_x2 - new_x1);
|
||||
else
|
||||
len = abs(new_y2 - new_y1);
|
||||
#ifdef POLYSEGMENT
|
||||
if (clip2 != 0 || pGC->capStyle != CapNotLast)
|
||||
len++;
|
||||
#else
|
||||
len += (clip2 != 0);
|
||||
#endif
|
||||
if (len) {
|
||||
/* unwind bresenham error term to first point */
|
||||
if (clip1) {
|
||||
clipdx = abs(new_x1 - x1);
|
||||
clipdy = abs(new_y1 - y1);
|
||||
if (axis == X_AXIS)
|
||||
err = e+((clipdy*e2) + ((clipdx-clipdy)*e1));
|
||||
else
|
||||
err = e+((clipdx*e2) + ((clipdy-clipdx)*e1));
|
||||
}
|
||||
else
|
||||
err = e;
|
||||
ilbmBresD(&dashIndexTmp, pDash, numInDashList, &dashOffsetTmp,
|
||||
isDoubleDash, addrlBase, nlwidth, auxDst, depthDst,
|
||||
signdx, signdy, axis, new_x1, new_y1, err, e1, e2,
|
||||
len, rrops, bgrrops); /* @@@ NEXT PLANE PASSED @@@ */
|
||||
}
|
||||
pbox++;
|
||||
}
|
||||
} /* while (nbox--) */
|
||||
#ifndef POLYSEGMENT
|
||||
/*
|
||||
* walk the dash list around to the next line
|
||||
*/
|
||||
miStepDash (unclippedlen, &dashIndex, pDash,
|
||||
numInDashList, &dashOffset);
|
||||
dontStep: ;
|
||||
#endif
|
||||
} /* while (nline--) */
|
||||
|
||||
#ifndef POLYSEGMENT
|
||||
/* paint the last point if the end style isn't CapNotLast.
|
||||
(Assume that a projecting, butt, or round cap that is one
|
||||
pixel wide is the same as the single pixel of the endpoint.)
|
||||
*/
|
||||
|
||||
if ((pGC->capStyle != CapNotLast) &&
|
||||
((dashIndex & 1) == 0 || isDoubleDash) &&
|
||||
((ppt->x + xorg != pptInit->x + pDrawable->x) ||
|
||||
(ppt->y + yorg != pptInit->y + pDrawable->y) ||
|
||||
(ppt == pptInit + 1))) {
|
||||
nbox = nboxInit;
|
||||
pbox = pboxInit;
|
||||
while (nbox--) {
|
||||
if ((x2 >= pbox->x1) && (y2 >= pbox->y1) && (x2 < pbox->x2) &&
|
||||
(y2 < pbox->y2)) {
|
||||
int rop;
|
||||
|
||||
for (d = 0; d < depthDst; d++) {
|
||||
addrl = ilbmScanline(addrlBase, x2, y2, auxDst);
|
||||
addrlBase += nlwidth; /* @@@ NEXT PLANE @@@ */
|
||||
|
||||
rop = rrops[d];
|
||||
if (dashIndex & 1)
|
||||
rop = bgrrops[d];
|
||||
|
||||
switch (rop) {
|
||||
case RROP_BLACK:
|
||||
*addrl &= rmask[x2 & PIM];
|
||||
break;
|
||||
case RROP_WHITE:
|
||||
*addrl |= mask[x2 & PIM];
|
||||
break;
|
||||
|
||||
case RROP_INVERT:
|
||||
*addrl ^= mask[x2 & PIM];
|
||||
break;
|
||||
|
||||
case RROP_NOP:
|
||||
break;
|
||||
}
|
||||
} /* for (d = ...) */
|
||||
break;
|
||||
} else
|
||||
pbox++;
|
||||
}
|
||||
}
|
||||
#endif
|
||||
}
|
||||
Loading…
Reference in a new issue