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authormarha <marha@users.sourceforge.net>2009-10-08 13:15:52 +0000
committermarha <marha@users.sourceforge.net>2009-10-08 13:15:52 +0000
commita0c4815433ccd57322f4f7703ca35e9ccfa59250 (patch)
treef5213802ec12adb86ec3136001c1c29fe5343700 /mesalib/src/glu/sgi/libnurbs/internals/arc.h
parentc73dc01b6de45612b24dc2dd34fba24d81ebf46c (diff)
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Added MesaLib-7.6
Diffstat (limited to 'mesalib/src/glu/sgi/libnurbs/internals/arc.h')
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diff --git a/mesalib/src/glu/sgi/libnurbs/internals/arc.h b/mesalib/src/glu/sgi/libnurbs/internals/arc.h
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+/*
+ * 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_ */