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140 lines
5.1 KiB
140 lines
5.1 KiB
2 years ago
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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 QPAINT (VARNP, LENF, NLNKF, LINKF, HIDEF,
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& XN, YN, ZN, XF, YF, ZF, ISVOK, FMIN, FMAX, *)
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C=======================================================================
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C --*** QPAINT *** (DETOUR) Paint contours (quick)
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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 --QPAINT 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 -- HIDEF(i) - IN - true iff face i is hidden (3D only)
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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 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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LOGICAL HIDEF(*)
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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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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 NC = 1, NCNTR
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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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C --Skip this contour if the values are outside the contour range
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IF ((FMIN .LT. CNTR1) .AND. (FMAX .GE. CNTR0)) THEN
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CALL GRCOLR (NC)
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DO 110 IELB = 1, NELBLK
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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) .AND. (NLNKF(IELB) .GT. 2)) THEN
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DO 100 IFAC = LENF(IELB-1)+1, LENF(IELB)
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IF (IS3DIM) THEN
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IF (HIDEF(IFAC)) GOTO 100
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END IF
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IXL = IDBLNK (IELB, IFAC, LENF, NLNKF)
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C --Compute the minimum and maximum values for the face
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if (nlnkf(ielb) .eq. 4) then
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femax = max(varnp(linkf(ixl)),
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* varnp(linkf(ixl+1)), varnp(linkf(ixl+2)),
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* varnp(linkf(ixl+3)))
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femin = min(varnp(linkf(ixl)),
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* varnp(linkf(ixl+1)), varnp(linkf(ixl+2)),
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* varnp(linkf(ixl+3)))
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else
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CALL CFMAX (VARNP, NLNKF(IELB), LINKF(IXL),
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& FEMIN, FEMAX)
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end if
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IF ((FEMIN .GE. CNTR0) .AND. (FEMAX .LT. CNTR1))
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& THEN
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C --Face is entirely inside the contour area
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CALL SOLIDF (NNPF, LINKF(IXL),
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& XN, YN, ZN)
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ELSE IF ((FEMIN .LT. CNTR1)
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& .AND. (FEMAX .GE. CNTR0)) THEN
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C --Face is partially inside the contour area
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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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END IF
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100 CONTINUE
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END IF
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110 CONTINUE
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CALL PLTFLU
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END IF
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120 CONTINUE
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RETURN
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END
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