tools/heretic2: move heretic2 stuff to its own directory

[xonotic/netradiant.git] / tools / heretic2 / common / polylib.h

diff --git a/tools/heretic2/common/polylib.h b/tools/heretic2/common/polylib.h
new file mode 100644 (file)
index 0000000..00b7b39
--- /dev/null
+++ b/tools/heretic2/common/polylib.h
@@ -0,0 +1,55 @@
+/*
+   Copyright (C) 1999-2007 id Software, Inc. and contributors.
+   For a list of contributors, see the accompanying CONTRIBUTORS file.
+
+   This file is part of GtkRadiant.
+
+   GtkRadiant is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+
+   GtkRadiant is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GtkRadiant; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+
+typedef struct
+{
+       int numpoints;
+       vec3_t p[4];        // variable sized
+} winding_t;
+
+#define MAX_POINTS_ON_WINDING   64
+
+// you can define on_epsilon in the makefile as tighter
+#ifndef ON_EPSILON
+#define ON_EPSILON  0.1
+#endif
+
+winding_t   *AllocWinding( int points );
+vec_t   WindingArea( winding_t *w );
+void    WindingCenter( winding_t *w, vec3_t center );
+void    ClipWindingEpsilon( winding_t *in, vec3_t normal, vec_t dist,
+                                                       vec_t epsilon, winding_t **front, winding_t **back );
+winding_t   *ChopWinding( winding_t *in, vec3_t normal, vec_t dist );
+winding_t   *CopyWinding( winding_t *w );
+winding_t   *ReverseWinding( winding_t *w );
+winding_t   *BaseWindingForPlane( vec3_t normal, vec_t dist );
+void    CheckWinding( winding_t *w );
+void    WindingPlane( winding_t *w, vec3_t normal, vec_t *dist );
+void    RemoveColinearPoints( winding_t *w );
+int     WindingOnPlaneSide( winding_t *w, vec3_t normal, vec_t dist );
+void    FreeWinding( winding_t *w );
+void    WindingBounds( winding_t *w, vec3_t mins, vec3_t maxs );
+
+void    ChopWindingInPlace( winding_t **w, vec3_t normal, vec_t dist, vec_t epsilon );
+// frees the original if clipped
+
+void pw( winding_t *w );