dll/opengl/glu32/src/libnurbs/internals/uarray.cc

   1 /*
   2 ** License Applicability. Except to the extent portions of this file are
   3 ** made subject to an alternative license as permitted in the SGI Free
   4 ** Software License B, Version 1.1 (the "License"), the contents of this
   5 ** file are subject only to the provisions of the License. You may not use
   6 ** this file except in compliance with the License. You may obtain a copy
   7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
   8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
   9 **
  10 ** http://oss.sgi.com/projects/FreeB
  11 **
  12 ** Note that, as provided in the License, the Software is distributed on an
  13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  17 **
  18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  21 ** Copyright in any portions created by third parties is as indicated
  22 ** elsewhere herein. All Rights Reserved.
  23 **
  24 ** Additional Notice Provisions: The application programming interfaces
  25 ** established by SGI in conjunction with the Original Code are The
  26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  31 ** published by SGI, but has not been independently verified as being
  32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  33 */
  34
  35 /*
  36  * uarray.c++
  37  *
  38  */
  39
  40 //#include "glimports.h"
  41 //#include "myassert.h"
  42 //#include "mystdio.h"
  43 #include "uarray.h"
  44 #include "arc.h"
  45
  46 Uarray::Uarray( void )
  47 {
  48     uarray = 0;
  49     size = 0;
  50     ulines = 0;
  51 }
  52
  53 Uarray::~Uarray( void )
  54 {
  55     if( uarray ) delete[] uarray;
  56 }
  57
  58 long
  59 Uarray::init( REAL delta, Arc_ptr lo, Arc_ptr hi )
  60 {
  61     ulines = (long) ((hi->tail()[0] - lo->tail()[0])/delta) + 3;
  62     if( size < ulines ) {
  63         size = ulines * 2;
  64         if( uarray ) delete[] uarray;
  65         uarray = new REAL[size];
  66         assert( uarray != 0);
  67     }
  68     uarray[0] = lo->tail()[0] - delta/2.0;
  69     for( long i = 1 ; i != ulines; i++ )
  70         uarray[i] = uarray[0] + i*delta;
  71     return ulines;
  72 }
  73