| [2aa6644] | 1 | /*BHEADER**********************************************************************
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| 2 | * Copyright (c) 2008, Lawrence Livermore National Security, LLC.
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| 3 | * Produced at the Lawrence Livermore National Laboratory.
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| 4 | * This file is part of HYPRE. See file COPYRIGHT for details.
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| 5 | *
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| 6 | * HYPRE is free software; you can redistribute it and/or modify it under the
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| 7 | * terms of the GNU Lesser General Public License (as published by the Free
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| 8 | * Software Foundation) version 2.1 dated February 1999.
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| 9 | *
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| 10 | * $Revision: 2.4 $
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| 11 | ***********************************************************************EHEADER*/
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| 12 |
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| 13 |
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| 14 | /******************************************************************************
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| 15 | *
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| 16 | * Routines for "growing" boxes.
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| 17 | *
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| 18 | *****************************************************************************/
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| 19 |
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| 20 | #include "headers.h"
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| 21 |
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| 22 | /*--------------------------------------------------------------------------
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| 23 | * hypre_GrowBoxByStencil:
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| 24 | * The argument `transpose' is a boolean that indicates whether
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| 25 | * or not to use the transpose of the stencil.
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| 26 | *--------------------------------------------------------------------------*/
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| 27 |
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| 28 | hypre_BoxArray *
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| 29 | hypre_GrowBoxByStencil( hypre_Box *box,
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| 30 | hypre_StructStencil *stencil,
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| 31 | int transpose )
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| 32 | {
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| 33 | hypre_BoxArray *grow_box_array;
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| 34 |
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| 35 | hypre_BoxArray *shift_box_array;
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| 36 | hypre_Box *shift_box;
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| 37 |
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| 38 | hypre_Index *stencil_shape;
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| 39 |
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| 40 | int s, d;
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| 41 |
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| 42 | stencil_shape = hypre_StructStencilShape(stencil);
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| 43 |
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| 44 | shift_box_array = hypre_BoxArrayCreate(hypre_StructStencilSize(stencil));
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| 45 | shift_box = hypre_BoxCreate();
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| 46 | for (s = 0; s < hypre_StructStencilSize(stencil); s++)
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| 47 | {
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| 48 | if (transpose)
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| 49 | for (d = 0; d < 3; d++)
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| 50 | {
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| 51 | hypre_BoxIMinD(shift_box, d) =
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| 52 | hypre_BoxIMinD(box, d) - hypre_IndexD(stencil_shape[s], d);
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| 53 | hypre_BoxIMaxD(shift_box, d) =
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| 54 | hypre_BoxIMaxD(box, d) - hypre_IndexD(stencil_shape[s], d);
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| 55 | }
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| 56 | else
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| 57 | for (d = 0; d < 3; d++)
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| 58 | {
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| 59 | hypre_BoxIMinD(shift_box, d) =
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| 60 | hypre_BoxIMinD(box, d) + hypre_IndexD(stencil_shape[s], d);
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| 61 | hypre_BoxIMaxD(shift_box, d) =
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| 62 | hypre_BoxIMaxD(box, d) + hypre_IndexD(stencil_shape[s], d);
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| 63 | }
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| 64 |
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| 65 | hypre_CopyBox(shift_box, hypre_BoxArrayBox(shift_box_array, s));
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| 66 | }
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| 67 | hypre_BoxDestroy(shift_box);
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| 68 |
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| 69 | hypre_UnionBoxes(shift_box_array);
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| 70 | grow_box_array = shift_box_array;
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| 71 |
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| 72 | return grow_box_array;
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| 73 | }
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| 74 |
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| 75 | /*--------------------------------------------------------------------------
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| 76 | * hypre_GrowBoxArrayByStencil:
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| 77 | *--------------------------------------------------------------------------*/
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| 78 |
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| 79 | hypre_BoxArrayArray *
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| 80 | hypre_GrowBoxArrayByStencil( hypre_BoxArray *box_array,
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| 81 | hypre_StructStencil *stencil,
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| 82 | int transpose )
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| 83 | {
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| 84 | hypre_BoxArrayArray *grow_box_array_array;
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| 85 |
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| 86 | int i;
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| 87 |
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| 88 | grow_box_array_array =
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| 89 | hypre_BoxArrayArrayCreate(hypre_BoxArraySize(box_array));
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| 90 |
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| 91 | hypre_ForBoxI(i, box_array)
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| 92 | {
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| 93 | hypre_BoxArrayDestroy(
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| 94 | hypre_BoxArrayArrayBoxArray(grow_box_array_array, i));
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| 95 | hypre_BoxArrayArrayBoxArray(grow_box_array_array, i) =
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| 96 | hypre_GrowBoxByStencil(hypre_BoxArrayBox(box_array, i),
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| 97 | stencil, transpose);
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| 98 | }
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| 99 |
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| 100 | return grow_box_array_array;
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| 101 | }
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