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36 lines
1.3 KiB
36 lines
1.3 KiB
C Copyright(C) 1999-2020 National Technology & Engineering Solutions
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C of Sandia, LLC (NTESS). Under the terms of Contract DE-NA0003525 with
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C NTESS, the U.S. Government retains certain rights in this software.
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C
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C See packages/seacas/LICENSE for details
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C=======================================================================
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SUBROUTINE SQRLIM (RDMESH, SQMESH)
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C=======================================================================
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C --*** SQRLIM *** (MESH) Expand 2D mesh limits to square
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C -- Written by Amy Gilkey - revised 05/23/86
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C --
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C --SQRLIM expands the mesh limits to form a square.
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C --
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C --Parameters:
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C -- RDMESH - IN - the mesh limits
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C -- (left, right, bottom, top)
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C -- SQMESH - OUT - the square mesh limits (may be RDMESH)
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C -- (left, right, bottom, top)
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PARAMETER (KLFT=1, KRGT=2, KBOT=3, KTOP=4, KNEA=5, KFAR=6)
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REAL RDMESH(KTOP), SQMESH(KTOP)
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RNG2 = .5 * MAX (RDMESH(KRGT) - RDMESH(KLFT)
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& , RDMESH(KTOP) - RDMESH(KBOT))
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XCEN = .5 * (RDMESH(KRGT) + RDMESH(KLFT))
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YCEN = .5 * (RDMESH(KTOP) + RDMESH(KBOT))
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SQMESH(KLFT) = XCEN - RNG2
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SQMESH(KRGT) = XCEN + RNG2
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SQMESH(KBOT) = YCEN - RNG2
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SQMESH(KTOP) = YCEN + RNG2
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RETURN
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END
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