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74 lines
2.4 KiB
74 lines
2.4 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 MP3PT(N,X0,Y0,Z0,PX,PY,PZ,MASK)
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COMMON /MAP/MODEL(4,4),VIEW(4,4),PROJ(4,4),CPNEAR,CPFAR,VWPORT(4),
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* MVP(4,4),VP(4,4),CPLINE(2,2,10),CPPLAN(2,3,10),PEYE(3),
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* PLOOK(3),ETWIST,NCPLIN,NCPLAN,TMAT1(4,4),TMAT2(4,4),
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* TMAT3(4,4),TVEC1(4),TVEC2(4),TVEC3(4),TVEC4(4),TARR1(32),
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* TARR2(32),TARR3(32),TARR4(32),TARR5(32),TARR6(32),
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* TARR7(32),TARR8(32)
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REAL MODEL,MVP
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LOGICAL NOCLIP
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DIMENSION PX(*),PY(*),PZ(*),MASK(*),C1(3),C2(3),X0(*),Y0(*),Z0(*)
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VCX = (VWPORT(1)+VWPORT(2))/2.
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VSX = (VWPORT(2)-VWPORT(1))/2.
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VCY = (VWPORT(3)+VWPORT(4))/2.
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VSY = (VWPORT(4)-VWPORT(3))/2.
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NOCLIP = (NCPLAN.EQ.0)
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KM = 0
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J = 0
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2260 IF (.NOT. (J.LT.N)) GO TO 2270
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JN = MIN(N-J,32)
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J1 = J
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KM = KM + 1
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J = J + JN
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MASK(KM) = -1
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IF (NOCLIP) THEN
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CALL MPMUL3(JN,X0(1+J1),Y0(1+J1),Z0(1+J1),MVP,TARR1,TARR2,
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* TARR3,TARR4)
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ELSE
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CALL MPMUL3(JN,X0(1+J1),Y0(1+J1),Z0(1+J1),MODEL,TARR1,TARR2,
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* TARR3,TARR4)
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DO 2280 I = 1,NCPLAN
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C1(1) = CPPLAN(1,1,I)
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C1(2) = CPPLAN(1,2,I)
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C1(3) = CPPLAN(1,3,I)
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C2(1) = CPPLAN(2,1,I)
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C2(2) = CPPLAN(2,2,I)
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C2(3) = CPPLAN(2,3,I)
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CALL PLTCP3(JN,MASK(KM),TARR1,TARR2,TARR3,C1,C2)
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2280 CONTINUE
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CALL MPMUL4(JN,MASK(KM),TARR1,TARR2,TARR3,TARR4,VP,TARR1,TARR2,
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* TARR3,TARR4)
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END IF
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CALL PLTZCP(CPNEAR,CPFAR,JN,MASK(KM),TARR4)
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DO 2300 I = 1,JN
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TARR1(I) = (TARR1(I)/TARR4(I))*VSX + VCX
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TARR2(I) = (TARR2(I)/TARR4(I))*VSY + VCY
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TARR3(I) = TARR3(I)/TARR4(I)
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2300 CONTINUE
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C1(1) = VWPORT(1)
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C1(2) = VWPORT(3)
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C2(1) = VWPORT(2)
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C2(2) = VWPORT(4)
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CALL PLTVWP(C1,C2,JN,MASK(KM),TARR1,TARR2)
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DO 2320 I = 1,JN
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PX(J1+I) = TARR1(I)
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PY(J1+I) = TARR2(I)
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PZ(J1+I) = TARR3(I)
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2320 CONTINUE
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GO TO 2260
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2270 CONTINUE
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RETURN
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END
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