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authorReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
committerReinhard Tartler <siretart@tauware.de>2011-10-10 17:43:39 +0200
commitf4092abdf94af6a99aff944d6264bc1284e8bdd4 (patch)
tree2ac1c9cc16ceb93edb2c4382c088dac5aeafdf0f /nx-X11/programs/Xserver/ilbm/ilbmzerarc.c
parenta840692edc9c6d19cd7c057f68e39c7d95eb767d (diff)
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Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1
Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository
Diffstat (limited to 'nx-X11/programs/Xserver/ilbm/ilbmzerarc.c')
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diff --git a/nx-X11/programs/Xserver/ilbm/ilbmzerarc.c b/nx-X11/programs/Xserver/ilbm/ilbmzerarc.c
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+++ b/nx-X11/programs/Xserver/ilbm/ilbmzerarc.c
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+/* $XFree86: xc/programs/Xserver/ilbm/ilbmzerarc.c,v 3.0 1996/08/18 01:54:15 dawes Exp $ */
+/************************************************************
+
+Copyright (c) 1989 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.
+
+********************************************************/
+
+/* $XConsortium: ilbmzerarc.c,v 5.19 94/04/17 20:28:37 dpw Exp $ */
+
+/* Derived from:
+ * "Algorithm for drawing ellipses or hyperbolae with a digital plotter"
+ * by M. L. V. Pitteway
+ * The Computer Journal, November 1967, Volume 10, Number 3, pp. 282-289
+ */
+
+/* Modified jun 95 by Geert Uytterhoeven (Geert.Uytterhoeven@cs.kuleuven.ac.be)
+ to use interleaved bitplanes instead of normal bitplanes */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <X11/X.h>
+#include <X11/Xprotostr.h>
+#include "miscstruct.h"
+#include "gcstruct.h"
+#include "pixmapstr.h"
+#include "scrnintstr.h"
+#include "ilbm.h"
+#include "maskbits.h"
+#include "mizerarc.h"
+#include "mi.h"
+
+/*
+ * Note: LEFTMOST must be the bit leftmost in the actual screen
+ * representation. This depends also on the IMAGE_BYTE_ORDER.
+ * LONG2CHARS() takes care of the re-ordering as required. (DHD)
+ */
+#if (BITMAP_BIT_ORDER == MSBFirst)
+#define LEFTMOST ((PixelType) LONG2CHARS((1 << PLST)))
+#else
+#define LEFTMOST ((PixelType) LONG2CHARS(1))
+#endif
+
+#define Pixelate(base,yoff,xoff) \
+{ \
+ paddr = ilbmScanlineOffset(base, (yoff) + ((xoff)>>PWSH)); \
+ pmask = SCRRIGHT(LEFTMOST, (xoff) & PIM); \
+ for (de = 0; de < depthDst; de++, paddr += nlwidth) /* @@@ NEXT PLANE @@@ */ \
+ switch (rrops[de]) { \
+ case RROP_BLACK: \
+ *paddr &= ~pmask; \
+ break; \
+ case RROP_WHITE: \
+ *paddr |= pmask; \
+ break; \
+ case RROP_INVERT: \
+ *paddr ^= pmask; \
+ break; \
+ case RROP_NOP: \
+ break; \
+ } \
+}
+
+#define DoPix(bit,base,yoff,xoff) if (mask & bit) Pixelate(base,yoff,xoff);
+
+static void
+ilbmZeroArcSS(pDraw, pGC, arc)
+ DrawablePtr pDraw;
+ GCPtr pGC;
+ xArc *arc;
+{
+ miZeroArcRec info;
+ Bool do360;
+ register int de;
+ register int x, y, a, b, d, mask;
+ register int k1, k3, dx, dy;
+ PixelType *addrl;
+ PixelType *yorgl, *yorgol;
+ PixelType pixel;
+ int nlwidth, yoffset, dyoffset;
+ int auxDst, depthDst;
+ PixelType pmask;
+ register PixelType *paddr;
+ register unsigned char *rrops;
+
+ rrops = ((ilbmPrivGC *)(pGC->devPrivates[ilbmGCPrivateIndex].ptr))->rrops;
+
+ ilbmGetPixelWidthAuxDepthAndPointer(pDraw, nlwidth, auxDst, depthDst,
+ addrl);
+ do360 = miZeroArcSetup(arc, &info, TRUE);
+ yorgl = addrl + ((info.yorg + pDraw->y) * auxDst);
+ yorgol = addrl + ((info.yorgo + pDraw->y) * auxDst);
+ info.xorg += pDraw->x;
+ info.xorgo += pDraw->x;
+ MIARCSETUP();
+ yoffset = y ? auxDst : 0;
+ dyoffset = 0;
+ mask = info.initialMask;
+ if (!(arc->width & 1)) {
+ DoPix(2, yorgl, 0, info.xorgo);
+ DoPix(8, yorgol, 0, info.xorgo);
+ }
+ if (!info.end.x || !info.end.y) {
+ mask = info.end.mask;
+ info.end = info.altend;
+ }
+ if (do360 && (arc->width == arc->height) && !(arc->width & 1)) {
+ int xoffset = auxDst;
+ PixelType *yorghl = ilbmScanlineDeltaNoBankSwitch(yorgl, info.h, auxDst);
+ int xorghp = info.xorg + info.h;
+ int xorghn = info.xorg - info.h;
+
+ while (1) {
+ Pixelate(yorgl, yoffset, info.xorg + x);
+ Pixelate(yorgl, yoffset, info.xorg - x);
+ Pixelate(yorgol, -yoffset, info.xorg - x);
+ Pixelate(yorgol, -yoffset, info.xorg + x);
+ if (a < 0)
+ break;
+ Pixelate(yorghl, -xoffset, xorghp - y);
+ Pixelate(yorghl, -xoffset, xorghn + y);
+ Pixelate(yorghl, xoffset, xorghn + y);
+ Pixelate(yorghl, xoffset, xorghp - y);
+ xoffset += auxDst;
+ MIARCCIRCLESTEP(yoffset += auxDst;);
+ }
+ x = info.w;
+ yoffset = info.h * auxDst;
+ } else if (do360) {
+ while (y < info.h || x < info.w) {
+ MIARCOCTANTSHIFT(dyoffset = auxDst;);
+ Pixelate(yorgl, yoffset, info.xorg + x);
+ Pixelate(yorgl, yoffset, info.xorgo - x);
+ Pixelate(yorgol, -yoffset, info.xorgo - x);
+ Pixelate(yorgol, -yoffset, info.xorg + x);
+ MIARCSTEP(yoffset += dyoffset;, yoffset += auxDst;);
+ }
+ } else {
+ while (y < info.h || x < info.w) {
+ MIARCOCTANTSHIFT(dyoffset = auxDst;);
+ if ((x == info.start.x) || (y == info.start.y)) {
+ mask = info.start.mask;
+ info.start = info.altstart;
+ }
+ DoPix(1, yorgl, yoffset, info.xorg + x);
+ DoPix(2, yorgl, yoffset, info.xorgo - x);
+ DoPix(4, yorgol, -yoffset, info.xorgo - x);
+ DoPix(8, yorgol, -yoffset, info.xorg + x);
+ if ((x == info.end.x) || (y == info.end.y)) {
+ mask = info.end.mask;
+ info.end = info.altend;
+ }
+ MIARCSTEP(yoffset += dyoffset;, yoffset += auxDst;);
+ }
+ }
+ if ((x == info.start.x) || (y == info.start.y))
+ mask = info.start.mask;
+ DoPix(1, yorgl, yoffset, info.xorg + x);
+ DoPix(4, yorgol, -yoffset, info.xorgo - x);
+ if (arc->height & 1) {
+ DoPix(2, yorgl, yoffset, info.xorgo - x);
+ DoPix(8, yorgol, -yoffset, info.xorg + x);
+ }
+}
+
+void
+ilbmZeroPolyArcSS(pDraw, pGC, narcs, parcs)
+ DrawablePtr pDraw;
+ GCPtr pGC;
+ int narcs;
+ xArc *parcs;
+{
+ register xArc *arc;
+ register int i;
+ BoxRec box;
+ RegionPtr cclip;
+
+ cclip = pGC->pCompositeClip;
+ for (arc = parcs, i = narcs; --i >= 0; arc++) {
+ if (miCanZeroArc(arc)) {
+ box.x1 = arc->x + pDraw->x;
+ box.y1 = arc->y + pDraw->y;
+ box.x2 = box.x1 + (int)arc->width + 1;
+ box.y2 = box.y1 + (int)arc->height + 1;
+ if (RECT_IN_REGION(pDraw->pScreen, cclip, &box) == rgnIN)
+ ilbmZeroArcSS(pDraw, pGC, arc);
+ else
+ miZeroPolyArc(pDraw, pGC, 1, arc);
+ } else
+ miPolyArc(pDraw, pGC, 1, arc);
+ }
+}