Add ports of the General Polygon Clipping library and its sample

client application. Some day OpenOffice may use this too...

5 files changed, 130 insertions, 0 deletions

diff --git a/devel/libgpc/Makefile b/devel/libgpc/Makefile
new file mode 100644
index 000000000000..d5745e5f0bcb
--- /dev/null
+++ b/devel/libgpc/Makefile
@@ -0,0 +1,28 @@
+# New ports collection makefile for:	gpc
+# Date created:		22 October 2005
+# Whom:			Mikhail Teterin
+#
+# $FreeBSD$
+#
+
+PORTNAME=	gpc
+PORTVERSION=	2.32
+CATEGORIES=	devel math graphics
+MASTER_SITES=	ftp://ftp.cs.man.ac.uk/pub/toby/gpc/
+DISTNAME=	${PORTNAME}${PORTVERSION:S/.//}
+
+MAINTAINER=	mi@aldan.algebra.com
+COMMENT=	Generic Polygon Clipper
+
+USE_ZIP=	yes
+PLIST_FILES=	lib/libgpc.so.${PORTVERSION}	\
+		lib/libgpc.so	lib/libgpc.a	\
+		include/gpc.h
+INSTALLS_SHLIB=	yes
+NO_CDROM=	Can't be used for profit without permission
+
+MAKEFILE=	${FILESDIR}/BSDmakefile
+
+EXTRACT_BEFORE_ARGS=-qoa
+
+.include <bsd.port.mk>
diff --git a/devel/libgpc/distinfo b/devel/libgpc/distinfo
new file mode 100644
index 000000000000..8daa03122003
--- /dev/null
+++ b/devel/libgpc/distinfo
@@ -0,0 +1,2 @@
+MD5 (gpc232.zip) = e8ede167d810f26cf01f760a8824e2c9
+SIZE (gpc232.zip) = 15606
diff --git a/devel/libgpc/files/BSDmakefile b/devel/libgpc/files/BSDmakefile
new file mode 100644
index 000000000000..6b4d317d263b
--- /dev/null
+++ b/devel/libgpc/files/BSDmakefile
@@ -0,0 +1,13 @@
+LIB=		gpc
+NOPROFILE=	yes
+SHLIB_MAJOR=	2
+SHLIB_MINOR=	32
+
+SRCS=		gpc.c
+INCS=		gpc.h
+
+LIBDIR=		${PREFIX}/lib
+INCSDIR=	${PREFIX}/include
+WARNS?=		4 # level 5 trips over '-Wunused'
+
+.include <bsd.lib.mk>
diff --git a/devel/libgpc/files/patch-alloca b/devel/libgpc/files/patch-alloca
new file mode 100644
index 000000000000..6b45ec7a48db
--- /dev/null
+++ b/devel/libgpc/files/patch-alloca
@@ -0,0 +1,65 @@
+Use alloca() instead of malloc()/free(), where it is easy to do.
+
+Use BSD's err() instead of fprintf()/exit() on fatal failures.
+
+When so exiting, use non-zero code to signal a failure.
+
+	-mi
+
+--- gpc.c	Fri Dec 17 10:39:26 2004
++++ gpc.c	Sat Oct 22 04:04:31 2005
+@@ -39,4 +39,5 @@ Copyright: (C) 1997-2004, Advanced Inter
+ 
+ #include "gpc.h"
++#include <err.h>
+ #include <stdlib.h>
+ #include <float.h>
+@@ -104,6 +105,6 @@ Copyright: (C) 1997-2004, Advanced Inter
+ #define MALLOC(p, b, s, t) {if ((b) > 0) { \
+                             p= (t*)malloc(b); if (!(p)) { \
+-                            fprintf(stderr, "gpc malloc failure: %s\n", s); \
+-                            exit(0);}} else p= NULL;}
++                            err(1, "gpc: %s needed %zd bytes\n", s, \
++                            (size_t)b); }} else p= NULL;}
+ 
+ #define FREE(p)            {if (p) {free(p); (p)= NULL;}}
+@@ -965,6 +966,5 @@ static void minimax_test(gpc_polygon *su
+   c_bbox= create_contour_bboxes(clip);
+ 
+-  MALLOC(o_table, subj->num_contours * clip->num_contours * sizeof(int),
+-         "overlap table creation", int);
++  o_table = alloca(subj->num_contours * clip->num_contours * sizeof(int));
+ 
+   /* Check all subject contour bounding boxes against clip boxes */
+@@ -1006,5 +1006,4 @@ static void minimax_test(gpc_polygon *su
+   FREE(s_bbox);
+   FREE(c_bbox);
+-  FREE(o_table);
+ }
+ 
+@@ -1166,5 +1165,5 @@ void gpc_polygon_clip(gpc_op op, gpc_pol
+ 
+   /* Build scanbeam table from scanbeam tree */
+-  MALLOC(sbt, sbt_entries * sizeof(double), "sbt creation", double);
++  sbt = alloca(sbt_entries * sizeof(double));
+   build_sbt(&scanbeam, sbt, sbtree);
+   scanbeam= 0;
+@@ -1749,5 +1748,4 @@ void gpc_polygon_clip(gpc_op op, gpc_pol
+   FREE(c_heap);
+   FREE(s_heap);
+-  FREE(sbt);
+ }
+ 
+@@ -1825,5 +1823,5 @@ void gpc_tristrip_clip(gpc_op op, gpc_po
+ 
+   /* Build scanbeam table from scanbeam tree */
+-  MALLOC(sbt, sbt_entries * sizeof(double), "sbt creation", double);
++  sbt = alloca(sbt_entries * sizeof(double));
+   build_sbt(&scanbeam, sbt, sbtree);
+   scanbeam= 0;
+@@ -2463,5 +2461,4 @@ void gpc_tristrip_clip(gpc_op op, gpc_po
+   FREE(c_heap);
+   FREE(s_heap);
+-  FREE(sbt);
+ }
+ 
diff --git a/devel/libgpc/pkg-descr b/devel/libgpc/pkg-descr
new file mode 100644
index 000000000000..0235b8c5f08d
--- /dev/null
+++ b/devel/libgpc/pkg-descr
@@ -0,0 +1,22 @@
+An algorithm for calculating the difference, intersection,
+exclusive-or or union of arbitrary polygon sets.
+
+Author:    Alan Murta (email: gpc@cs.man.ac.uk)
+
+Copyright: (C) 1997-2004, Advanced Interfaces Group,
+	University of Manchester.
+
+	This software is free for non-commercial use. It may be copied,
+	modified, and redistributed provided that this copyright notice
+	is preserved on all copies. The intellectual property rights of
+	the algorithms used reside with the University of Manchester
+	Advanced Interfaces Group.
+
+	You may not use this software, in whole or in part, in support
+	of any commercial product without the express consent of the
+	author.
+
+WWW:	http://www.cs.man.ac.uk/~toby/alan/software/
+
+	Software documentation at
+WWW:	http://www.cs.man.ac.uk/~toby/alan/software/gpc.html