1 files changed, 133 insertions, 0 deletions
diff --git a/mesalib/src/glu/sgi/libnurbs/internals/arc.h b/mesalib/src/glu/sgi/libnurbs/internals/arc.h
new file mode 100644
index 000000000..e986019c3
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+++ b/mesalib/src/glu/sgi/libnurbs/internals/arc.h
@@ -0,0 +1,133 @@
+/*
+ * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
+ * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * 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 including the dates of first publication and
+ * either this permission notice or a reference to
+ * http://oss.sgi.com/projects/FreeB/
+ * 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
+ * SILICON GRAPHICS, INC. 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 Silicon Graphics, Inc.
+ * shall not be used in advertising or otherwise to promote the sale, use or
+ * other dealings in this Software without prior written authorization from
+ * Silicon Graphics, Inc.
+ */
+
+/*
+ * arc.h
+ *
+ */
+
+#ifndef __gluarc_h_
+#define __gluarc_h_
+
+#include "myassert.h"
+#include "bufpool.h"
+#include "mystdio.h"
+#include "types.h"
+#include "pwlarc.h"
+#include "trimvertex.h"
+
+class Bin;
+class Arc;
+struct BezierArc;	
+
+typedef class Arc *Arc_ptr; 
+
+enum arc_side { arc_none = 0, arc_right, arc_top, arc_left, arc_bottom };
+
+
+class Arc: public PooledObj { /* an arc, in two list, the trim list and bin */
+
+public:
+    static const int bezier_tag;
+    static const int arc_tag;
+    static const int tail_tag;
+    Arc_ptr		prev;		/* trim list pointer */
+    Arc_ptr		next;		/* trim list pointer */
+    Arc_ptr		link;		/* bin pointers */
+    BezierArc *		bezierArc;	/* associated bezier arc */
+    PwlArc *		pwlArc;	/* associated pwl arc */
+    long		type;		/* curve type */
+    long		nuid;
+
+    inline		Arc( Arc *, PwlArc * );
+    inline		Arc( arc_side, long );
+
+    Arc_ptr		append( Arc_ptr );
+    int			check( void );
+    int			isMonotone( void );
+    int			isDisconnected( void );
+    int			numpts( void );
+    void		markverts( void );
+    void		getextrema( Arc_ptr[4] );
+    void		print( void );
+    void		show( void );
+    void		makeSide( PwlArc *, arc_side );
+    inline int		isTessellated() { return pwlArc ? 1 : 0; }
+    inline long 	isbezier() 	{ return type & bezier_tag; }
+    inline void 	setbezier() 	{ type |= bezier_tag; }
+    inline void 	clearbezier() 	{ type &= ~bezier_tag; }
+    inline long		npts() 		{ return pwlArc->npts; }
+    inline TrimVertex *	pts() 		{ return pwlArc->pts; }
+    inline REAL * 	tail() 		{ return pwlArc->pts[0].param; }
+    inline REAL * 	head() 		{ return next->pwlArc->pts[0].param; }
+    inline REAL *	rhead() 	{ return pwlArc->pts[pwlArc->npts-1].param; }
+    inline long		ismarked()	{ return type & arc_tag; }
+    inline void		setmark()	{ type |= arc_tag; }
+    inline void		clearmark()	{ type &= (~arc_tag); }
+    inline void		clearside() 	{ type &= ~(0x7 << 8); }
+    inline void		setside( arc_side s ) { clearside(); type |= (((long)s)<<8); }
+    inline arc_side	getside() 	{ return (arc_side) ((type>>8) & 0x7); }
+    inline int		getitail()	{ return type & tail_tag; }
+    inline void		setitail()	{ type |= tail_tag; }
+    inline void		clearitail()	{ type &= (~tail_tag); }
+};
+
+/*--------------------------------------------------------------------------
+ * Arc - initialize a new Arc with the same type and uid of
+ *	    a given Arc and a given pwl arc
+ *--------------------------------------------------------------------------
+ */
+
+inline
+Arc::Arc( Arc *j, PwlArc *p )
+{
+    bezierArc = NULL;
+    pwlArc = p;
+    type = j->type;
+    nuid = j->nuid;
+}
+
+/*--------------------------------------------------------------------------
+ * Arc - initialize a new Arc with the same type and uid of
+ *	    a given Arc and a given pwl arc
+ *--------------------------------------------------------------------------
+ */
+
+inline
+Arc::Arc( arc_side side, long _nuid )
+{
+    bezierArc = NULL;
+    pwlArc = NULL;
+    type = 0;
+    setside( side );
+    nuid = _nuid;
+}
+
+#endif /* __gluarc_h_ */