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-rw-r--r--xorg-server/hw/xfree86/xf4bpp/mfbline.c976
1 files changed, 0 insertions, 976 deletions
diff --git a/xorg-server/hw/xfree86/xf4bpp/mfbline.c b/xorg-server/hw/xfree86/xf4bpp/mfbline.c
deleted file mode 100644
index d2d4e0b0e..000000000
--- a/xorg-server/hw/xfree86/xf4bpp/mfbline.c
+++ /dev/null
@@ -1,976 +0,0 @@
-/***********************************************************
-
-Copyright (c) 1987 X Consortium
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-
-Except as contained in this notice, the name of the X Consortium shall not be
-used in advertising or otherwise to promote the sale, use or other dealings
-in this Software without prior written authorization from the X Consortium.
-
-
-Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
-
- All Rights Reserved
-
-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 and that
-both that copyright notice and this permission notice appear in
-supporting documentation, and that the name of Digital not be
-used in advertising or publicity pertaining to distribution of the
-software without specific, written prior permission.
-
-DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
-ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
-DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
-ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
-WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
-SOFTWARE.
-
-******************************************************************/
-/* GJA -- modified this file for vga16 */
-
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#endif
-
-#include <stdlib.h>
-
-#include "xf4bpp.h"
-#include "OScompiler.h"
-#include "mfbmap.h"
-#include "mfb.h"
-#include "maskbits.h"
-#include "mi.h"
-#include "miline.h"
-#include "vgaVideo.h"
-#include "wm3.h"
-
-#include "xf86str.h" /* for pScrn->vtSema */
-extern ScrnInfoPtr *xf86Screens;
-
-/* single-pixel lines on a color frame buffer
-
- NON-SLOPED LINES
- horizontal lines are always drawn left to right; we have to
-move the endpoints right by one after they're swapped.
- horizontal lines will be confined to a single band of a
-region. the code finds that band (giving up if the lower
-bound of the band is above the line we're drawing); then it
-finds the first box in that band that contains part of the
-line. we clip the line to subsequent boxes in that band.
- vertical lines are always drawn top to bottom (y-increasing.)
-this requires adding one to the y-coordinate of each endpoint
-after swapping.
-
- SLOPED LINES
- when clipping a sloped line, we bring the second point inside
-the clipping box, rather than one beyond it, and then add 1 to
-the length of the line before drawing it. this lets us use
-the same box for finding the outcodes for both endpoints. since
-the equation for clipping the second endpoint to an edge gives us
-1 beyond the edge, we then have to move the point towards the
-first point by one step on the major axis.
- eventually, there will be a diagram here to explain what's going
-on. the method uses Cohen-Sutherland outcodes to determine
-outsideness, and a method similar to Pike's layers for doing the
-actual clipping.
-
-*/
-#ifdef POLYSEGMENT
-static void DoV16SegmentSS(
- DrawablePtr, GCPtr, int, xSegment*
-);
-
-void
-xf4bppSegmentSS (pDrawable, pGC, nseg, pSeg)
- DrawablePtr pDrawable;
- GCPtr pGC;
- int nseg;
- register xSegment *pSeg;
-{
- if ( ! xf86Screens[pDrawable->pScreen->myNum]->vtSema ) {
- miPolySegment(pDrawable, pGC, nseg, pSeg);
- } else {
- DO_WM3(pGC,DoV16SegmentSS (pDrawable, pGC, nseg, pSeg));
- }
-}
-
-#else
-static void DoV16LineSS(
- DrawablePtr, GCPtr, int, int, DDXPointPtr
-);
-
-void
-xf4bppLineSS (pDrawable, pGC, mode, npt, pptInit)
- DrawablePtr pDrawable;
- GCPtr pGC;
- int mode; /* Origin or Previous */
- int npt; /* number of points */
- DDXPointPtr pptInit;
-{
- if ( ! xf86Screens[pDrawable->pScreen->myNum]->vtSema ) {
- miZeroLine(pDrawable, pGC, mode, npt, pptInit);
- } else {
- DO_WM3(pGC,DoV16LineSS (pDrawable, pGC, mode, npt, pptInit));
- }
-}
-#endif
-
-static void
-#ifdef POLYSEGMENT
-DoV16SegmentSS (pDrawable, pGC, nseg, pSeg)
- DrawablePtr pDrawable;
- GCPtr pGC;
- int nseg;
- register xSegment *pSeg;
-#else
-DoV16LineSS (pDrawable, pGC, mode, npt, pptInit)
- DrawablePtr pDrawable;
- 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
-
- unsigned int oc1; /* outcode of point 1 */
- unsigned int oc2; /* outcode of point 2 */
-
- PixelType *addrlBase; /* pointer to start of drawable */
-#ifndef POLYSEGMENT
- PixelType *addrl; /* address of destination pixmap */
-#endif
- int nlwidth; /* width in longwords of destination pixmap */
- 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);
-
- /* a bunch of temporaries */
- register int y1, y2;
- register int x1, x2;
- RegionPtr cclip;
-#ifndef POLYSEGMENT
- int alu = pGC->alu; /* GJA */
-#endif
-
- if (!(pGC->planemask & 0x0F))
- return;
-
- cclip = pGC->pCompositeClip;
- pboxInit = REGION_RECTS(cclip);
- nboxInit = REGION_NUM_RECTS(cclip);
-
- nlwidth = BYTES_PER_LINE(pDrawable) >> 2; /* GJA */
- addrlBase = (PixelType *)VIDBASE(pDrawable); /* GJA */
-
- 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
-
- if (x1 == x2) /* vertical line */
- {
- /* make the line go top to bottom of screen, keeping
- endpoint semantics
- */
- if (y1 > y2)
- {
- register int tmp;
-
- tmp = y2;
- y2 = y1 + 1;
- y1 = tmp + 1;
-#ifdef POLYSEGMENT
- if (pGC->capStyle != CapNotLast)
- y1--;
-#endif
- }
-#ifdef POLYSEGMENT
- else if (pGC->capStyle != CapNotLast)
- y2++;
-#endif
- /* get to first band that might contain part of line */
- while ((nbox) && (pbox->y2 <= y1))
- {
- pbox++;
- nbox--;
- }
-
- if (nbox)
- {
- /* stop when lower edge of box is beyond end of line */
- while((nbox) && (y2 >= pbox->y1))
- {
- if ((x1 >= pbox->x1) && (x1 < pbox->x2))
- {
- int y1t, y2t;
- /* this box has part of the line in it */
- y1t = max(y1, pbox->y1);
- y2t = min(y2, pbox->y2);
- if (y1t != y2t)
- {
- xf4bppVertS (addrlBase, nlwidth,
- x1, y1t, y2t-y1t);
- }
- }
- nbox--;
- pbox++;
- }
- }
-#ifndef POLYSEGMENT
- y2 = ppt->y + yorg;
-#endif
- }
- else if (y1 == y2) /* horizontal line */
- {
- /* force line from left to right, keeping
- endpoint semantics
- */
- if (x1 > x2)
- {
- register int tmp;
-
- tmp = x2;
- x2 = x1 + 1;
- x1 = tmp + 1;
-#ifdef POLYSEGMENT
- if (pGC->capStyle != CapNotLast)
- x1--;
-#endif
- }
-#ifdef POLYSEGMENT
- else if (pGC->capStyle != CapNotLast)
- x2++;
-#endif
-
- /* find the correct band */
- while( (nbox) && (pbox->y2 <= y1))
- {
- pbox++;
- nbox--;
- }
-
- /* try to draw the line, if we haven't gone beyond it */
- if ((nbox) && (pbox->y1 <= y1))
- {
- int tmp;
-
- /* when we leave this band, we're done */
- tmp = pbox->y1;
- while((nbox) && (pbox->y1 == tmp))
- {
- int x1t, x2t;
-
- if (pbox->x2 <= x1)
- {
- /* skip boxes until one might contain start point */
- nbox--;
- pbox++;
- continue;
- }
-
- /* stop if left of box is beyond right of line */
- if (pbox->x1 >= x2)
- {
- nbox = 0;
- break;
- }
-
- x1t = max(x1, pbox->x1);
- x2t = min(x2, pbox->x2);
- if (x1t != x2t)
- {
- xf4bppHorzS (addrlBase, nlwidth,
- x1t, y1, x2t-x1t);
- }
- nbox--;
- pbox++;
- }
- }
-#ifndef POLYSEGMENT
- x2 = ppt->x + xorg;
-#endif
- }
- else /* sloped line */
- {
- 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;
- }
- else
- {
- axis = Y_AXIS;
- e1 = adx << 1;
- e2 = e1 - (ady << 1);
- e = e1 - 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)
- {
- if (axis == X_AXIS)
- len = adx;
- else
- len = ady;
-#ifdef POLYSEGMENT
- if (pGC->capStyle != CapNotLast)
- len++;
-#endif
- xf4bppBresS (addrlBase, nlwidth,
- signdx, signdy, axis, x1, y1,
- e, e1, e2, len);
- break;
- }
- else if (oc1 & oc2)
- {
- pbox++;
- }
- else
- {
- 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;
- }
-
- 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;
- xf4bppBresS (addrlBase, nlwidth,
- signdx, signdy, axis, new_x1, new_y1,
- err, e1, e2, len);
- }
- 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)))
- {
- PixelType _mask;
-
- if (alu == RROP_BLACK)
- _mask = mfbGetrmask(x2 & PIM);
- else
- _mask = mfbGetmask(x2 & PIM);
-
- nbox = nboxInit;
- pbox = pboxInit;
- while (nbox--)
- {
- if ((x2 >= pbox->x1) &&
- (y2 >= pbox->y1) &&
- (x2 < pbox->x2) &&
- (y2 < pbox->y2))
- {
- addrl = mfbScanline(addrlBase, x2, y2, nlwidth);
- UPDRW(addrl,_mask);
- break;
- }
- else
- pbox++;
- }
- }
-#endif
-}
-
-/*
- * Draw dashed 1-pixel lines.
- */
-
-#ifdef POLYSEGMENT
-static void DoV16SegmentSD(
- DrawablePtr, GCPtr, int, xSegment*
-);
-
-void
-xf4bppSegmentSD (pDrawable, pGC, nseg, pSeg)
- DrawablePtr pDrawable;
- GCPtr pGC;
- int nseg;
- register xSegment *pSeg;
-{
- if ( ! xf86Screens[pDrawable->pScreen->myNum]->vtSema ) {
- miPolySegment(pDrawable, pGC, nseg, pSeg);
- } else {
- DO_WM3(pGC,DoV16SegmentSD (pDrawable, pGC, nseg, pSeg));
- }
-}
-
-#else
-static void DoV16LineSD(
- DrawablePtr, GCPtr, int, int, DDXPointPtr
-);
-
-void
-xf4bppLineSD (pDrawable, pGC, mode, npt, pptInit)
- DrawablePtr pDrawable;
- GCPtr pGC;
- int mode; /* Origin or Previous */
- int npt; /* number of points */
- DDXPointPtr pptInit;
-{
- if ( ! xf86Screens[pDrawable->pScreen->myNum]->vtSema ) {
- miZeroDashLine(pDrawable, pGC, mode, npt, pptInit);
- } else {
- DO_WM3(pGC,DoV16LineSD (pDrawable, pGC, mode, npt, pptInit));
- }
-}
-#endif
-
-static void
-#ifdef POLYSEGMENT
-DoV16SegmentSD (pDrawable, pGC, nseg, pSeg)
- DrawablePtr pDrawable;
- register GCPtr pGC;
- int nseg;
- register xSegment *pSeg;
-#else
-DoV16LineSD( 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 *addrl; /* address of destination pixmap */
- int nlwidth; /* width in longwords of destination pixmap */
- 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;
- int fgink, bgink; /* GJA */
- unsigned char *pDash;
- int dashOffset;
- int numInDashList;
- int dashIndex;
- int isDoubleDash;
- int dashIndexTmp, dashOffsetTmp;
- int unclippedlen;
-
- if (!(pGC->planemask & 0x0F))
- return;
-
- cclip = pGC->pCompositeClip;
- fgink = bgink = pGC->fgPixel; /* GJA */
- pboxInit = REGION_RECTS(cclip);
- nboxInit = REGION_NUM_RECTS(cclip);
-
- nlwidth = BYTES_PER_LINE(pDrawable) >> 2; /* GJA */
- addrl = (PixelType *)VIDBASE(pDrawable); /* GJA */
-
- /* 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)
- bgink = pGC->bgPixel; /* GJA */
-
- 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;
- xf4bppBresD (pDrawable, fgink, bgink,
- &dashIndexTmp, pDash, numInDashList,
- &dashOffsetTmp, isDoubleDash,
- addrl, nlwidth,
- signdx, signdy, axis, x1, y1,
- e, e1, e2, unclippedlen);
- break;
-#else
- xf4bppBresD (pDrawable, fgink, bgink,
- &dashIndex, pDash, numInDashList,
- &dashOffset, isDoubleDash,
- addrl, nlwidth,
- signdx, signdy, axis, x1, y1,
- e, e1, e2, unclippedlen);
- 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;
- xf4bppBresD (pDrawable, fgink, bgink,
- &dashIndexTmp, pDash, numInDashList,
- &dashOffsetTmp, isDoubleDash,
- addrl, nlwidth,
- signdx, signdy, axis, new_x1, new_y1,
- err, e1, e2, len);
- }
- 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))
- {
- unsigned long _mask;
-
- _mask = mfbGetmask(x2 & PIM);
- addrl = mfbScanline(addrl, x2, y2, nlwidth);
- UPDRW(addrl,_mask);
- break;
- }
- else
- pbox++;
- }
- }
-#endif
-}
-
-
-#if 0
-#ifndef POLYSEGMENT
-/*
- the clipping code could be cleaned up some; most of its
-mess derives from originally being inline in the line code,
-then pulled out to make clipping dashes easier.
-*/
-
-int
-mfbClipLine(pbox, box,
- ppt1Orig, ppt1, ppt2,
- adx, ady, signdx, signdy, axis,
- pclip1, pclip2)
-BoxPtr pbox; /* box to clip to */
-BoxRec box; /* box to do calculations with */
-DDXPointPtr ppt1Orig, ppt1, ppt2;
-int adx, ady;
-int signdx, signdy;
-register int axis;
-int *pclip1, *pclip2;
-{
- DDXPointRec pt1Orig, pt1, pt2;
- register int swapped = 0;
- int clipDone = 0;
- register unsigned int utmp;
- register int oc1, oc2;
- int clip1, clip2;
-
- pt1Orig = *ppt1Orig;
- pt1 = *ppt1;
- pt2 = *ppt2;
- clip1 = 0;
- clip2 = 0;
-
- do
- {
- oc1 = 0;
- oc2 = 0;
- OUTCODES(oc1, pt1.x, pt1.y, pbox);
- OUTCODES(oc2, pt2.x, pt2.y, pbox);
-
- if (oc1 & oc2)
- clipDone = -1;
- else if ((oc1 | oc2) == 0)
- {
- clipDone = 1;
- if (swapped)
- {
- SWAPPT(pt1, pt2);
- SWAPINT(oc1, oc2);
- SWAPINT(clip1, clip2);
- }
- }
- else /* have to clip */
- {
- /* only clip one point at a time */
- if (!oc1)
- {
- SWAPPT(pt1, pt2);
- SWAPINT(oc1, oc2);
- SWAPINT(clip1, clip2);
- swapped = !swapped;
- }
-
- clip1 |= oc1;
- if (oc1 & OUT_LEFT)
- {
- pt1.x = box.x1;
- utmp = abs(box.x1 - pt1Orig.x);
- utmp *= ady;
- if(axis==X_AXIS)
- {
- pt1.y = pt1Orig.y + SignTimes(signdy, round(utmp, adx));
- }
- else
- {
- utmp <<= 1;
- if (swapped)
- utmp += ady;
- else
- utmp -= ady;
- pt1.y = pt1Orig.y + SignTimes(signdy, ceiling(utmp, 2*adx));
- if (swapped)
- pt1.y -= signdy;
- }
- }
- else if (oc1 & OUT_ABOVE)
- {
- pt1.y = box.y1;
- utmp = abs(box.y1 - pt1Orig.y);
- utmp *= adx;
- if (axis == Y_AXIS)
- {
- pt1.x = pt1Orig.x + SignTimes(signdx, round(utmp, ady));
- }
- else
- {
- utmp <<= 1;
- if (swapped)
- utmp += adx;
- else
- utmp -= adx;
- pt1.x = pt1Orig.x + SignTimes(signdx, ceiling(utmp, 2*ady));
- if (swapped)
- pt1.x -= signdx;
- }
- }
- else if (oc1 & OUT_RIGHT)
- {
- pt1.x = box.x2;
- utmp = abs(pt1Orig.x - box.x2);
- utmp *= ady;
- if (axis == X_AXIS)
- {
- pt1.y = pt1Orig.y + SignTimes(signdy, round(utmp, adx));
- }
- else
- {
- utmp <<= 1;
- if (swapped)
- utmp += ady;
- else
- utmp -= ady;
- pt1.y = pt1Orig.y + SignTimes(signdy, ceiling(utmp, 2*adx));
- if (swapped)
- pt1.y -= signdy;
- }
- }
- else if (oc1 & OUT_BELOW)
- {
- pt1.y = box.y2;
- utmp = abs(pt1Orig.y - box.y2);
- utmp *= adx;
- if (axis == Y_AXIS)
- {
- pt1.x = pt1Orig.x + SignTimes(signdx, round(utmp, ady));
- }
- else
- {
- utmp <<= 1;
- if (swapped)
- utmp += adx;
- else
- utmp -= adx;
- pt1.x = pt1Orig.x + SignTimes(signdx, ceiling(utmp, 2*ady));
- if (swapped)
- pt1.x -= signdx;
- }
- }
- } /* else have to clip */
- } while(!clipDone);
- *ppt1 = pt1;
- *ppt2 = pt2;
- *pclip1 = clip1;
- *pclip2 = clip2;
-
- return clipDone;
-}
-#endif
-#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 19:17:34 +0000