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195 lines
6.6 KiB
195 lines
6.6 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 PAINT (VARNP, LENF, NLNKF, LINKF, NXFAC, IXFAC,
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& XN, YN, ZN, XF, YF, ZF, ISVOK, FMIN, FMAX, *)
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C=======================================================================
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C --*** PAINT *** (DETOUR) Paint contours
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C -- Modified by John H. Glick - 10/26/88
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C -- Written by Amy Gilkey - revised 03/14/88
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C --
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C --PAINT paints contour sections in a color sequence. The contour
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C --algorithm assumes that the elements do not contain internal nodes.
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C --The element interpolation field is approximated by logically drawing
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C --lines from each node to the element center and, thusly, dividing the
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C --element into triangles. Contour sections are then drawn by connecting
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C --the intersection points of the sub-element edges and the contour
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C --plane.
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C --
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C --The element block status indicates which element blocks are active
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C --for contours. No contours are drawn in inactive elements.
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C --
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C --Parameters:
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C -- VARNP - IN - the contour function values
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C -- LENF - IN - the cumulative face counts by element block
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C -- NLNKF - IN - the number of nodes per face
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C -- LINKF - IN - the connectivity for all faces
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C -- NXFAC - IN - the number of ordered faces
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C -- IXFAC - IN - the indices of the ordered faces
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C -- XN, YN, ZN - IN - the nodal coordinates
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C -- XF, YF, ZF - IN - the face center coordinates
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C -- ISVOK - IN - ISVOK(i) is true iff the contour variable is defined
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C -- for element block i (always true if nodal variable)
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C -- FMIN, FMAX - IN - the minimum and maximum function value
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C -- * - return statement if the cancel function is active
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C --
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C --Common Variables:
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C -- Uses NUMEL, NELBLK of /DBNUMS/
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C -- Uses IS3DIM of /D3NUMS/
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C -- Uses NCNTR, NOCMIN, NOCMAX of /CNTR/
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include 'dbnums.blk'
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COMMON /D3NUMS/ IS3DIM, NNPSUR, NUMNPF, LLNSET
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LOGICAL IS3DIM
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COMMON /CNTR/ CINTOK, LINCON, NCNTR, CMIN, CMAX, DELC,
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& CINTV(256), NOCMIN, NOCMAX, LABINC, MAXMIN, MAXMAX
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LOGICAL CINTOK, LINCON, NOCMIN, NOCMAX
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REAL VARNP(*)
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INTEGER LENF(0:NELBLK)
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INTEGER NLNKF(NELBLK)
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INTEGER LINKF(*)
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INTEGER IXFAC(*)
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REAL XN(*), YN(*), ZN(*)
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REAL XF(*), YF(*), ZF(*)
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LOGICAL ISVOK(NELBLK)
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LOGICAL GRABRT
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C --Fill the CINTV array with the contour intervals
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IF (.NOT. CINTOK) THEN
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DO 100 NC = 1, NCNTR+1
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CINTV(NC) = CNTRI (NC)
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100 CONTINUE
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END IF
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C --Set the contour minimum and maximum (in case NOCMIN, etc.)
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CNTRMN = FMIN - ABS (DELC)
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CNTRMX = FMAX + ABS (DELC)
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DO 120 IX = 1, NXFAC
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IFAC = IXFAC(IX)
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IELB = 0
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IXL = IDBLNK (IELB, IFAC, LENF, NLNKF)
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IF (NLNKF(IELB) .LE. 2) GOTO 120
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IF ((.NOT. IS3DIM) .AND. (NLNKF(IELB) .EQ. 9)) THEN
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NNPF = 8
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ELSE
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NNPF = NLNKF(IELB)
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ENDIF
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IF (ISVOK(IELB)) THEN
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C --Compute the minimum and maximum values for the face
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CALL CFMAX (VARNP, NLNKF(IELB), LINKF(IXL), FEMIN, FEMAX)
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C --Find limiting contour intervals
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difx = abs(cintv(1) - femax)
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difn = abs(cintv(1) - femin)
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imaxc = 1
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iminc = 1
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do 10 i=2, ncntr+1
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difxx = abs(cintv(i) - femax)
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if (difx .gt. difxx) then
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difx = difxx
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imaxc = i
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end if
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difnn = abs(cintv(i) - femin)
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if (difn .gt. difnn) then
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difn = difnn
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iminc = i
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end if
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10 continue
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IF (DELC .GE. 0.0) THEN
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c$$$ MINC = LOCREA (FEMIN, NCNTR+1, CINTV)
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c$$$ MAXC = LOCREA (FEMAX, NCNTR+1, CINTV)
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minc = iminc
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maxc = imaxc
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IF (FEMIN .LT. CINTV(MINC)) MINC = MINC - 1
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IF (FEMAX .LT. CINTV(MAXC)) MAXC = MAXC - 1
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ELSE
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c$$$ MINC = LOCREA (FEMAX, NCNTR+1, CINTV)
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c$$$ MAXC = LOCREA (FEMIN, NCNTR+1, CINTV)
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minc = imaxc
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maxc = iminc
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IF (FEMAX .GE. CINTV(MINC)) MINC = MINC - 1
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IF (FEMIN .GE. CINTV(MAXC)) MAXC = MAXC - 1
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END IF
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IF (NOCMIN .AND. (MINC .LT. 1)) THEN
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MINC = 1
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IF (MINC .GT. MAXC) MAXC = MINC
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END IF
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IF (NOCMAX .AND. (MAXC .GT. NCNTR)) THEN
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MAXC = NCNTR
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IF (MINC .GT. MAXC) MINC = MAXC
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END IF
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IF ((MAXC .LT. 1) .OR. (MINC .GT. NCNTR)) THEN
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MINC = -1
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MAXC = -1
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END IF
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ELSE
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C --Not selected, paint face black
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MINC = -1
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MAXC = -1
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END IF
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C --Skip this contour if the values are outside the contour range
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IF (MINC .EQ. MAXC) THEN
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C --Face is entirely inside one contour area
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CALL GRCOLR (MINC)
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CALL SOLIDF (NNPF, LINKF(IXL), XN, YN, ZN)
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ELSE
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C --Face has several contour areas
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IF ((MINC .LT. 1) .OR. (MAXC .GT. NCNTR)) THEN
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C --Some part of face is outside contour limits, paint black
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CALL GRCOLR (-1)
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MINC = MAX (MINC, 1)
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MAXC = MIN (MAXC, NCNTR)
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END IF
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DO 110 NC = MINC, MAXC
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CALL GRCOLR (NC)
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IF (DELC .GE. 0.0) THEN
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CNTR0 = CNTRI (NC)
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IF (NOCMIN .AND. (NC .EQ. 1)) CNTR0 = CNTRMN
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CNTR1 = CNTRI (NC+1)
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IF (NOCMAX .AND. (NC .EQ. NCNTR)) CNTR1 = CNTRMX
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ELSE
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CNTR1 = CNTRI (NC)
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IF (NOCMIN .AND. (NC .EQ. 1)) CNTR1 = CNTRMX
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CNTR0 = CNTRI (NC+1)
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IF (NOCMAX .AND. (NC .EQ. NCNTR)) CNTR0 = CNTRMN
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END IF
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IF ((FEMIN .GE. CNTR1) .OR. (FEMAX .LT. CNTR0))
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& print *, femin, cntr1, femax, cntr0
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IF (GRABRT ()) RETURN 1
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CALL PAINTF (CNTR0, CNTR1,
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& VARNP, NLNKF(IELB), LINKF(IXL),
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& XN, YN, ZN, XF(IFAC), YF(IFAC), ZF(IFAC))
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110 CONTINUE
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END IF
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120 CONTINUE
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CALL PLTFLU
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RETURN
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END
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