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71 lines
2.0 KiB
71 lines
2.0 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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LOGICAL FUNCTION PLTG2D(XG,YG,XD,YD)
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DIMENSION UMAP(14)
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REAL TYPE(1)
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PLTG2D = .FALSE.
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CALL PLTGTG(27,UMAP)
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CALL PLTGTG(9,TYPE)
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IF (TYPE(1).EQ.1.) THEN
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XD = XG*UMAP(1) + YG*UMAP(3) + UMAP(5)
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YD = XG*UMAP(2) + YG*UMAP(4) + UMAP(6)
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ELSE IF (TYPE(1).EQ.2.) THEN
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IF (XG.LE.0.) THEN
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CALL PLTFLU
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CALL SIORPT('PLTG2D',
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* 'Cannot convert a negative number on log x axis.'
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* ,2)
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RETURN
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END IF
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XD = LOG10(XG)*UMAP(1) + YG*UMAP(3) + UMAP(5)
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YD = LOG10(XG)*UMAP(2) + YG*UMAP(4) + UMAP(6)
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ELSE IF (TYPE(1).EQ.3.) THEN
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IF (YG.LE.0.) THEN
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CALL PLTFLU
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CALL SIORPT('PLTG2D',
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* 'Cannot convert a negative number on log y axis.'
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* ,2)
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RETURN
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END IF
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XD = XG*UMAP(1) + LOG10(YG)*UMAP(3) + UMAP(5)
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YD = XG*UMAP(2) + LOG10(YG)*UMAP(4) + UMAP(6)
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ELSE IF (TYPE(1).EQ.4.) THEN
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IF (XG.LE.0.) THEN
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CALL PLTFLU
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CALL SIORPT('PLTG2D',
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* 'Cannot convert a negative number on log x axis.'
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* ,2)
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RETURN
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END IF
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IF (YG.LE.0.) THEN
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CALL PLTFLU
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CALL SIORPT('PLTG2D',
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* 'Cannot convert a negative number on log y axis.'
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* ,2)
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RETURN
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END IF
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XD = LOG10(XG)*UMAP(1) + LOG10(YG)*UMAP(3) + UMAP(5)
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YD = LOG10(XG)*UMAP(2) + LOG10(YG)*UMAP(4) + UMAP(6)
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END IF
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PLTG2D = .TRUE.
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RETURN
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END
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