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authorroot <root@zombrain.(none)>2011-07-25 08:54:41 (GMT)
committerroot <root@zombrain.(none)>2011-07-25 08:54:41 (GMT)
commitab4fcaad149d4bdccefa8f693c2a8e044b40dd4c (patch)
treec95c280caabc70e7aedbde723e38820047357be7 /mi/midash.c
initial state (xorg-server 1.10.2)
Diffstat (limited to 'mi/midash.c')
-rw-r--r--mi/midash.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/mi/midash.c b/mi/midash.c
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+/***********************************************************
+
+Copyright 1987, 1998 The Open Group
+
+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.
+
+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
+OPEN GROUP 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 Open Group 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 Open Group.
+
+
+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.
+
+******************************************************************/
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "regionstr.h"
+#include "mistruct.h"
+#include "mifpoly.h"
+
+void
+miStepDash (
+ int dist, /* distance to step */
+ int *pDashIndex, /* current dash */
+ unsigned char *pDash, /* dash list */
+ int numInDashList, /* total length of dash list */
+ int *pDashOffset /* offset into current dash */
+ )
+{
+ int dashIndex, dashOffset;
+ int totallen;
+ int i;
+
+ dashIndex = *pDashIndex;
+ dashOffset = *pDashOffset;
+ if (dist < pDash[dashIndex] - dashOffset)
+ {
+ *pDashOffset = dashOffset + dist;
+ return;
+ }
+ dist -= pDash[dashIndex] - dashOffset;
+ if (++dashIndex == numInDashList)
+ dashIndex = 0;
+ totallen = 0;
+ for (i = 0; i < numInDashList; i++)
+ totallen += pDash[i];
+ if (totallen <= dist)
+ dist = dist % totallen;
+ while (dist >= pDash[dashIndex])
+ {
+ dist -= pDash[dashIndex];
+ if (++dashIndex == numInDashList)
+ dashIndex = 0;
+ }
+ *pDashIndex = dashIndex;
+ *pDashOffset = dist;
+}
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