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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/patch.h
parentc73dc01b6de45612b24dc2dd34fba24d81ebf46c (diff)
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Added MesaLib-7.6
Diffstat (limited to 'mesalib/src/glu/sgi/libnurbs/internals/patch.h')
-rw-r--r--mesalib/src/glu/sgi/libnurbs/internals/patch.h94
1 files changed, 94 insertions, 0 deletions
diff --git a/mesalib/src/glu/sgi/libnurbs/internals/patch.h b/mesalib/src/glu/sgi/libnurbs/internals/patch.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.
+ */
+
+/*
+ * patch.h
+ *
+ */
+
+#ifndef __glupatch_h_
+#define __glupatch_h_
+
+#include "types.h"
+#include "defines.h"
+
+class Quilt;
+class Mapdesc;
+
+
+struct Pspec {
+ REAL range[3];
+ REAL sidestep[2];
+ REAL stepsize;
+ REAL minstepsize;
+ int needsSubdivision;
+};
+
+struct Patchspec : public Pspec {
+ int order;
+ int stride;
+ void clamp( REAL );
+ void getstepsize( REAL );
+ void singleStep( void );
+};
+
+class Patch {
+public:
+friend class Subdivider;
+friend class Quilt;
+friend class Patchlist;
+ Patch( Quilt *, REAL*, REAL *, Patch * );
+ Patch( Patch &, int, REAL, Patch * );
+ void bbox( void );
+ void clamp( void );
+ void getstepsize( void );
+ int cullCheck( void );
+ int needsSubdivision( int );
+ int needsSamplingSubdivision( void );
+ int needsNonSamplingSubdivision( void );
+
+ int get_uorder() {return pspec[0].order;}
+ int get_vorder() {return pspec[1].order;}
+
+private:
+
+ Mapdesc* mapdesc;
+ Patch* next;
+ int cullval;
+ int notInBbox;
+ int needsSampling;
+ REAL cpts[MAXORDER*MAXORDER*MAXCOORDS]; //culling pts
+ REAL spts[MAXORDER*MAXORDER*MAXCOORDS]; //sampling pts
+ REAL bpts[MAXORDER*MAXORDER*MAXCOORDS]; //bbox pts
+ Patchspec pspec[2];
+ void checkBboxConstraint( void );
+ REAL bb[2][MAXCOORDS];
+};
+#endif /* __glupatch_h_ */