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-rw-r--r--nx-X11/lib/Xrender/Poly.c302
1 files changed, 0 insertions, 302 deletions
diff --git a/nx-X11/lib/Xrender/Poly.c b/nx-X11/lib/Xrender/Poly.c
deleted file mode 100644
index ee461d7c5..000000000
--- a/nx-X11/lib/Xrender/Poly.c
+++ /dev/null
@@ -1,302 +0,0 @@
-/*
- *
- * Copyright © 2002 Keith Packard
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, 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 Keith Packard not be used in
- * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission. Keith Packard makes no
- * representations about the suitability of this software for any purpose. It
- * is provided "as is" without express or implied warranty.
- *
- * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL KEITH PACKARD 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.
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include "Xrenderint.h"
-
-typedef struct _Edge Edge;
-
-struct _Edge {
- XLineFixed edge;
- XFixed current_x;
- Bool clockWise;
- Edge *next, *prev;
-};
-
-static int
-CompareEdge (const void *o1, const void *o2)
-{
- const Edge *e1 = o1, *e2 = o2;
-
- return e1->edge.p1.y - e2->edge.p1.y;
-}
-
-static XFixed
-XRenderComputeX (XLineFixed *line, XFixed y)
-{
- XFixed dx = line->p2.x - line->p1.x;
- double ex = (double) (y - line->p1.y) * (double) dx;
- XFixed dy = line->p2.y - line->p1.y;
-
- return (XFixed) line->p1.x + (XFixed) (ex / dy);
-}
-
-static double
-XRenderComputeInverseSlope (XLineFixed *l)
-{
- return (XFixedToDouble (l->p2.x - l->p1.x) /
- XFixedToDouble (l->p2.y - l->p1.y));
-}
-
-static double
-XRenderComputeXIntercept (XLineFixed *l, double inverse_slope)
-{
- return XFixedToDouble (l->p1.x) - inverse_slope * XFixedToDouble (l->p1.y);
-}
-
-static XFixed
-XRenderComputeIntersect (XLineFixed *l1, XLineFixed *l2)
-{
- /*
- * x = m1y + b1
- * x = m2y + b2
- * m1y + b1 = m2y + b2
- * y * (m1 - m2) = b2 - b1
- * y = (b2 - b1) / (m1 - m2)
- */
- double m1 = XRenderComputeInverseSlope (l1);
- double b1 = XRenderComputeXIntercept (l1, m1);
- double m2 = XRenderComputeInverseSlope (l2);
- double b2 = XRenderComputeXIntercept (l2, m2);
-
- return XDoubleToFixed ((b2 - b1) / (m1 - m2));
-}
-
-static int
-XRenderComputeTrapezoids (Edge *edges,
- int nedges,
- int winding,
- XTrapezoid *traps)
-{
- int ntraps = 0;
- int inactive;
- Edge *active;
- Edge *e, *en, *next;
- XFixed y, next_y, intersect;
-
- qsort (edges, nedges, sizeof (Edge), CompareEdge);
-
- y = edges[0].edge.p1.y;
- active = 0;
- inactive = 0;
- while (active || inactive < nedges)
- {
- /* insert new active edges into list */
- while (inactive < nedges)
- {
- e = &edges[inactive];
- if (e->edge.p1.y > y)
- break;
- /* move this edge into the active list */
- inactive++;
- e->next = active;
- e->prev = 0;
- if (active)
- active->prev = e;
- active = e;
- }
- /* compute x coordinates along this group */
- for (e = active; e; e = e->next)
- e->current_x = XRenderComputeX (&e->edge, y);
-
- /* sort active list */
- for (e = active; e; e = next)
- {
- next = e->next;
- /*
- * Find one later in the list that belongs before the
- * current one
- */
- for (en = next; en; en = en->next)
- {
- if (en->current_x < e->current_x ||
- (en->current_x == e->current_x &&
- en->edge.p2.x < e->edge.p2.x))
- {
- /*
- * insert en before e
- *
- * extract en
- */
- en->prev->next = en->next;
- if (en->next)
- en->next->prev = en->prev;
- /*
- * insert en
- */
- if (e->prev)
- e->prev->next = en;
- else
- active = en;
- en->prev = e->prev;
- e->prev = en;
- en->next = e;
- /*
- * start over at en
- */
- next = en;
- break;
- }
- }
- }
-#if 0
- printf ("y: %6.3g:", y / 65536.0);
- for (e = active; e; e = e->next)
- {
- printf (" %6.3g", e->current_x / 65536.0);
- }
- printf ("\n");
-#endif
- /* find next inflection point */
- next_y = active->edge.p2.y;
- for (e = active; e; e = en)
- {
- if (e->edge.p2.y < next_y)
- next_y = e->edge.p2.y;
- en = e->next;
- /* check intersect */
- if (en && e->edge.p2.x > en->edge.p2.x)
- {
- intersect = XRenderComputeIntersect (&e->edge, &e->next->edge);
- /* make sure this point is below the actual intersection */
- intersect = intersect + 1;
- if (intersect < next_y)
- next_y = intersect;
- }
- }
- /* check next inactive point */
- if (inactive < nedges && edges[inactive].edge.p1.y < next_y)
- next_y = edges[inactive].edge.p1.y;
-
- /* walk the list generating trapezoids */
- for (e = active; e && (en = e->next); e = en->next)
- {
- traps->top = y;
- traps->bottom = next_y;
- traps->left = e->edge;
- traps->right = en->edge;
- traps++;
- ntraps++;
- }
-
- y = next_y;
-
- /* delete inactive edges from list */
- for (e = active; e; e = next)
- {
- next = e->next;
- if (e->edge.p2.y <= y)
- {
- if (e->prev)
- e->prev->next = e->next;
- else
- active = e->next;
- if (e->next)
- e->next->prev = e->prev;
- }
- }
- }
- return ntraps;
-}
-
-void
-XRenderCompositeDoublePoly (Display *dpy,
- int op,
- Picture src,
- Picture dst,
- _Xconst XRenderPictFormat *maskFormat,
- int xSrc,
- int ySrc,
- int xDst,
- int yDst,
- _Xconst XPointDouble *fpoints,
- int npoints,
- int winding)
-{
- Edge *edges;
- XTrapezoid *traps;
- int i, nedges, ntraps;
- XFixed x, y, prevx = 0, prevy = 0, firstx = 0, firsty = 0;
- XFixed top = 0, bottom = 0; /* GCCism */
-
- edges = (Edge *) Xmalloc (npoints * sizeof (Edge) +
- (npoints * npoints * sizeof (XTrapezoid)));
- if (!edges)
- return;
- traps = (XTrapezoid *) (edges + npoints);
- nedges = 0;
- for (i = 0; i <= npoints; i++)
- {
- if (i == npoints)
- {
- x = firstx;
- y = firsty;
- }
- else
- {
- x = XDoubleToFixed (fpoints[i].x);
- y = XDoubleToFixed (fpoints[i].y);
- }
- if (i)
- {
- if (y < top)
- top = y;
- else if (y > bottom)
- bottom = y;
- if (prevy < y)
- {
- edges[nedges].edge.p1.x = prevx;
- edges[nedges].edge.p1.y = prevy;
- edges[nedges].edge.p2.x = x;
- edges[nedges].edge.p2.y = y;
- edges[nedges].clockWise = True;
- nedges++;
- }
- else if (prevy > y)
- {
- edges[nedges].edge.p1.x = x;
- edges[nedges].edge.p1.y = y;
- edges[nedges].edge.p2.x = prevx;
- edges[nedges].edge.p2.y = prevy;
- edges[nedges].clockWise = False;
- nedges++;
- }
- /* drop horizontal edges */
- }
- else
- {
- top = y;
- bottom = y;
- firstx = x;
- firsty = y;
- }
- prevx = x;
- prevy = y;
- }
- ntraps = XRenderComputeTrapezoids (edges, nedges, winding, traps);
- /* XXX adjust xSrc/xDst */
- XRenderCompositeTrapezoids (dpy, op, src, dst, maskFormat, xSrc, ySrc, traps, ntraps);
- Xfree (edges);
-}
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