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|
* This program demonstrates animation and 3D geometry in PGPLOT. It
* requires a fast, interactive display, e.g., /XWIN. Do not
* specify a hardcopy device. The speed of the animation is limited by
* the cpu speed of the host computer.
*
* Thanks to Dr Martin Weisser:
* Date: Sun, 18 May 1997 16:14:01 CET
* From: weisser@chclu.chemie.uni-konstanz.de
PROGRAM PGDEM17
C-----------------------------------------------------------------------
C Demonstration program for PGPLOT.
C-----------------------------------------------------------------------
INTEGER PGOPEN
C
WRITE (*,*) 'PGPLOT: Demonstration of animation and 3D geometry'
WRITE (*,*) 'Select a fast, interactive device, e.g., /XWINDOW'
IF (PGOPEN('?') .LE. 0) STOP
CALL POLY3D
CALL PGCLOS
C-----------------------------------------------------------------------
END
SUBROUTINE POLY3D
C
INTEGER NFRAMS
C
INTEGER NTOT, NLIN, IPOS, IFIRST
REAL T, T1, T2, T3, PI, W, W1, TET, TET1, ROT, ROT1
C
PARAMETER (NTOT=34)
PARAMETER (T=1.618)
PARAMETER (T1=1.0+T)
PARAMETER (T2=-T)
PARAMETER (T3=-T1)
PARAMETER (W=0.60*T)
PARAMETER (W1=-W)
PARAMETER (TET=0.37)
PARAMETER (TET1=-TET)
PARAMETER (ROT=0.13)
PARAMETER (ROT1=-ROT)
PARAMETER (NLIN=49)
C
INTEGER I, J, L, III, ILINE, NTOTM6
INTEGER ICDFOR, ICCFOR, ICTFOR, ICLFOR
INTEGER ICDBCK, ICCBCK, ICTBCK, ICLBCK
INTEGER ITYPE(NTOT), IARRAY(NLIN), JARRAY(NLIN), LITYPE(NLIN)
REAL RQ, ZZ
REAL THAXI1, PHAXI1, ALFA1, THAXI2, PHAXI2, ALFA2
REAL THAXI3, PHAXI3, ALFA3, THAXI4, PHAXI4, ALFA4
REAL XOFF, YOFF, ZOFF
REAL XARRAY(NTOT), YARRAY(NTOT), ZARRAY(NTOT), DISTAN(NLIN)
REAL POLYS(3,NTOT), X(2), Y(2), C(3), CROT(3), RPOL(3,3)
PARAMETER (PI=3.14159265359)
C
C Cartesian coordinates of the polygons
C
DATA POLYS/ T, T, T, T, T,T2,
D T,T2, T, T,T2,T2,
D T2, T, T, T2, T,T2,
D T2,T2, T, T2,T2,T2,
D T1,1.0,0.0, T1,-1.0,0.0,
D T3,1.0,0.0, T3,-1.0,0.0,
D 0.0,T1,1.0, 0.0,T1,-1.0,
D 0.0,T3,1.0, 0.0,T3,-1.0,
D 1.0,0.0,T1, -1.0,0.0,T1,
D 1.0,0.0,T3, -1.0,0.0,T3,
C W, W, W, W, W, W1,
C W, W1, W, W, W1, W1,
C W1, W, W, W1, W1, W,
C W1, W, W1, W1, W1, W1,
T TET, TET, TET, TET1, TET1, TET,
T TET1, TET, TET1, TET, TET1, TET1,
L ROT, 0.0, 0.0, ROT1, 0.0, 0.0/
C
DATA ITYPE/1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
C 2,2,2,2,2,2,2,2,
T 3,3,3,3,
L 4,4/
C
C Initialize the plot (no labels).
C
CALL PGENV(-3.2,3.2,-3.2,3.2,1,-2)
C
C Switch from page to page without typing return.
C
CALL PGASK(.FALSE.)
C
C Rotation axis of the polygons
C
THAXI1 = PI/4.0
PHAXI1 = PI/4.5
ALFA1 = 0.0
THAXI2 = PI/6.0
PHAXI2 = 0.0
ALFA2 = 0.02
THAXI3 = PI/2.0
PHAXI3 = -PI/3.0
ALFA3 = 0.0
THAXI4 = -0.03
PHAXI4 = PI/7.0
ALFA4 = 0.9
C
XOFF=0.0
YOFF=0.0
ZOFF=0.0
NTOTM6=NTOT-6
C
C Colors
C
ICDFOR = 3
ICDBCK = 10
C
ICCFOR = 8
ICCBCK = 2
C
ICTFOR = 5
ICTBCK = 4
C
ICLFOR = 1
ICLBCK = 7
C
IPOS=1
C
WRITE(*,*)' Rotation with increasing velocity'
C
NFRAMS=3500
C
DO 12 I=1,NTOT
XARRAY(I) = POLYS(1,I)
YARRAY(I) = POLYS(2,I)
ZARRAY(I) = POLYS(3,I)
12 CONTINUE
C
DO 30 L=1,NFRAMS
C
CALL PGBBUF
CALL PGERAS
C
CALL SORTPP(NTOT,ITYPE,ZARRAY,YARRAY,XARRAY)
C
IFIRST=0
DO 13 I=1,NTOT
IF((ZARRAY(I).GE.0.0).AND.(IFIRST.EQ.0)) THEN
IFIRST = 1
IPOS = I
END IF
13 CONTINUE
C
IF(L.EQ.2800) CALL OFFSET (XOFF,YOFF,ZOFF)
IF (MOD(L,500).EQ.0) THEN
CALL CHNAX(THAXI3,PHAXI3,THAXI2,PHAXI2,THAXI1,PHAXI1)
END IF
C
DO 33 I=1,IPOS-1
IF (ITYPE(I).EQ.1) THEN
CALL PGSCI(ICDBCK)
CALL PGSLW(18)
ELSE IF (ITYPE(I).EQ.2) THEN
CALL PGSCI(ICCBCK)
CALL PGSLW(17)
ELSE IF (ITYPE(I).EQ.3) THEN
CALL PGSCI(ICTBCK)
CALL PGSLW(15)
ELSE
CALL PGSCI(ICLBCK)
CALL PGSLW(14)
END IF
ZZ = ZARRAY(I)
CALL PGPT(1,XARRAY(I)+0.2*ZZ,YARRAY(I)+0.3*ZZ,9)
33 CONTINUE
C
DO 44 I=IPOS,NTOT
IF (ITYPE(I).EQ.1) THEN
CALL PGSCI(ICDFOR)
CALL PGSLW(18)
ELSE IF (ITYPE(I).EQ.2) THEN
CALL PGSCI(ICCFOR)
CALL PGSLW(17)
ELSE IF (ITYPE(I).EQ.3) THEN
CALL PGSCI(ICTFOR)
CALL PGSLW(15)
ELSE
CALL PGSCI(ICLFOR)
CALL PGSLW(14)
END IF
ZZ = ZARRAY(I)
CALL PGPT(1,XARRAY(I)+0.2*ZZ,YARRAY(I)+0.3*ZZ,9)
44 CONTINUE
C
ILINE=0
C
DO 2000 I=2,NTOT
DO 1000 J=1,I-1
IF (ITYPE(I).EQ.ITYPE(J)) THEN
RQ = 0.0
RQ = RQ + ( (XARRAY(I)-XARRAY(J))**2+
# (YARRAY(I)-YARRAY(J))**2+
# (ZARRAY(I)-ZARRAY(J))**2 )
C
IF ( ((RQ-0.0676) .LT.0.001).OR.
# ((RQ-1.095199).LT.0.001).OR.
# ((RQ-3.769809).LT.0.001).OR.
# ((RQ-4.000000).LT.0.001) ) THEN
ILINE = ILINE + 1
DISTAN(ILINE) = ZARRAY(I)+ZARRAY(J)
IF(DISTAN(ILINE).LT.0.0) THEN
LITYPE(ILINE) = -ITYPE(I)
ELSE
LITYPE(ILINE) = ITYPE(I)
END IF
IARRAY(ILINE) = I
JARRAY(ILINE) = J
END IF
END IF
1000 CONTINUE
2000 CONTINUE
C
CALL SORTLI(ILINE,DISTAN,IARRAY,JARRAY,LITYPE)
C
DO 3000 III=1,ILINE
I=IARRAY(III)
J=JARRAY(III)
ZZ = ZARRAY(I)
X(1) = XARRAY(I)+0.2*ZZ
Y(1) = YARRAY(I)+0.3*ZZ
ZZ = ZARRAY(J)
X(2) = XARRAY(J)+0.2*ZZ
Y(2) = YARRAY(J)+0.3*ZZ
IF (LITYPE(III).GT.0) THEN
IF(LITYPE(III).EQ.1) THEN
CALL PGSLW(10)
CALL PGSCI(ICDFOR)
ELSE IF (LITYPE(III).EQ.2) THEN
CALL PGSLW(8)
CALL PGSCI(ICCFOR)
ELSE IF (LITYPE(III).EQ.3) THEN
CALL PGSLW(6)
CALL PGSCI(ICTFOR)
ELSE
CALL PGSLW(4)
CALL PGSCI(ICLFOR)
END IF
ELSE
IF(LITYPE(III).EQ.-1) THEN
CALL PGSLW(7)
CALL PGSCI(ICDBCK)
ELSE IF (LITYPE(III).EQ.-2) THEN
CALL PGSLW(4)
CALL PGSCI(ICCBCK)
ELSE IF (LITYPE(III).EQ.-3) THEN
CALL PGSLW(3)
CALL PGSCI(ICTBCK)
ELSE
CALL PGSLW(2)
CALL PGSCI(ICLBCK)
END IF
END IF
CALL PGLINE(2,X,Y)
3000 CONTINUE
C
DO 45 I=NTOTM6,NTOT
IF (ITYPE(I).EQ.1) THEN
CALL PGSCI(ICDFOR)
CALL PGSLW(19)
ZZ = ZARRAY(I)
CALL PGPT(1,XARRAY(I)+0.2*ZZ,YARRAY(I)+0.3*ZZ,9)
END IF
45 CONTINUE
C
DO 4000 III=1,NTOT
IF (ITYPE(III).EQ.1) THEN
CALL POLMAT(RPOL,THAXI1,PHAXI1,ALFA1)
ELSE IF (ITYPE(III).EQ.2) THEN
CALL POLMAT(RPOL,THAXI2,PHAXI2,ALFA2)
ELSE IF (ITYPE(III).EQ.3) THEN
CALL POLMAT(RPOL,THAXI3,PHAXI3,ALFA3)
ELSE
CALL POLMAT(RPOL,THAXI4,PHAXI4,ALFA4)
END IF
C(1)=XARRAY(III)
C(2)=YARRAY(III)
C(3)=ZARRAY(III)
CALL MMULT (C,RPOL,CROT)
XARRAY(III)=CROT(1)+XOFF
YARRAY(III)=CROT(2)+YOFF
ZARRAY(III)=CROT(3)+ZOFF
4000 CONTINUE
C
ALFA1 = ALFA1+1.5E-5*(1.0+2.0*L/4000.)
ALFA2 = ALFA2-2.0E-5*(1.0+4.0*L/4000.)
ALFA3 = ALFA3-4.0E-5*(1.0+3.0*L/4000.)
C
CALL PGEBUF
C
30 CONTINUE
C
C-----------------------------------------------------------------------
END
SUBROUTINE MMULT (VECTOR,RMATRX,ROTVEC)
C
C Matrix multiplication
C
REAL VECTOR(3)
REAL ROTVEC(3)
REAL RMATRX(3,3)
C
ROTVEC(1)=RMATRX(1,1)*VECTOR(1)+RMATRX(1,2)*VECTOR(2)+
# RMATRX(1,3)*VECTOR(3)
ROTVEC(2)=RMATRX(2,1)*VECTOR(1)+RMATRX(2,2)*VECTOR(2)+
# RMATRX(2,3)*VECTOR(3)
ROTVEC(3)=RMATRX(3,1)*VECTOR(1)+RMATRX(3,2)*VECTOR(2)+
# RMATRX(3,3)*VECTOR(3)
C
RETURN
END
SUBROUTINE POLMAT(RPOL,THAXI,PHAXI,ALFA)
C
REAL THAXI,PHAXI,ALFA
REAL RPOL(3,3)
REAL SINT,SINTQ,SINP,SINPQ,SINA
REAL COST,COSTQ,COSP,COSPQ,COSA,EMCOSA
C
SINT = SIN(THAXI)
COST = COS(THAXI)
SINP = SIN(PHAXI)
COSP = COS(PHAXI)
SINA = SIN(ALFA)
COSA = COS(ALFA)
EMCOSA = 1.0-COSA
C
SINTQ = SINT*SINT
COSTQ = COST*COST
SINPQ = SINP*SINP
COSPQ = COSP*COSP
C
RPOL(1,1) = COSA+COSPQ*SINTQ*EMCOSA
RPOL(2,1) = COST*SINA+SINP*COSP*SINTQ*EMCOSA
RPOL(3,1) = -SINP*SINT*SINA+SINT*COST*COSP*EMCOSA
RPOL(1,2) = -COST*SINA+SINP*COSP*SINTQ*EMCOSA
RPOL(2,2) = COSA+SINPQ*SINTQ*EMCOSA
RPOL(2,3) = -COSP*SINT*SINA+SINP*SINT*COST*EMCOSA
RPOL(1,3) = SINP*SINT*SINA+SINT*COST*COSP*EMCOSA
RPOL(3,2) = COSP*SINT*SINA+COST*SINT*SINP*EMCOSA
RPOL(3,3) = COSA+COSTQ*EMCOSA
C
RETURN
END
SUBROUTINE SORTPP(N,ITYPE,RA1,RA2,RA3)
C
REAL RA1, RA2, RA3, RRA1, RRA2, RRA3
INTEGER ITYPE(*), L, N, IR, I, J, IRRA1
DIMENSION RA1(*), RA2(*), RA3(*)
L=N/2+1
IR=N
10 CONTINUE
IF(L.GT.1)THEN
L=L-1
RRA1=RA1(L)
IRRA1=ITYPE(L)
RRA2=RA2(L)
RRA3=RA3(L)
ELSE
RRA1=RA1(IR)
IRRA1=ITYPE(IR)
RRA2=RA2(IR)
RRA3=RA3(IR)
RA1(IR)=RA1(1)
ITYPE(IR)=ITYPE(1)
RA2(IR)=RA2(1)
RA3(IR)=RA3(1)
IR=IR-1
IF(IR.EQ.1)THEN
RA1(1)=RRA1
ITYPE(1)=IRRA1
RA2(1)=RRA2
RA3(1)=RRA3
RETURN
ENDIF
ENDIF
I=L
J=L+L
20 IF(J.LE.IR)THEN
IF(J.LT.IR)THEN
IF(RA1(J).LT.RA1(J+1))J=J+1
ENDIF
IF(RRA1.LT.RA1(J))THEN
RA1(I)=RA1(J)
ITYPE(I)=ITYPE(J)
RA2(I)=RA2(J)
RA3(I)=RA3(J)
I=J
J=J+J
ELSE
J=IR+1
ENDIF
GO TO 20
ENDIF
RA1(I)=RRA1
ITYPE(I)=IRRA1
RA2(I)=RRA2
RA3(I)=RRA3
GO TO 10
END
C
SUBROUTINE SORTLI(N,RA1,IA1,IA2,IA3)
C
REAL RA1, RRA1
INTEGER L, N, IR, I, J, IRA1, IRA2, IRA3, IA1, IA2, IA3
DIMENSION RA1(*), IA1(*), IA2(*) , IA3(*)
L=N/2+1
IR=N
10 CONTINUE
IF(L.GT.1)THEN
L=L-1
RRA1=RA1(L)
IRA1=IA1(L)
IRA2=IA2(L)
IRA3=IA3(L)
ELSE
RRA1=RA1(IR)
IRA1=IA1(IR)
IRA2=IA2(IR)
IRA3=IA3(IR)
RA1(IR)=RA1(1)
IA1(IR)=IA1(1)
IA2(IR)=IA2(1)
IA3(IR)=IA3(1)
IR=IR-1
IF(IR.EQ.1)THEN
RA1(1)=RRA1
IA1(1)=IRA1
IA2(1)=IRA2
IA3(1)=IRA3
RETURN
ENDIF
ENDIF
I=L
J=L+L
20 IF(J.LE.IR)THEN
IF(J.LT.IR)THEN
IF(RA1(J).LT.RA1(J+1))J=J+1
ENDIF
IF(RRA1.LT.RA1(J))THEN
RA1(I)=RA1(J)
IA1(I)=IA1(J)
IA2(I)=IA2(J)
IA3(I)=IA3(J)
I=J
J=J+J
ELSE
J=IR+1
ENDIF
GO TO 20
ENDIF
RA1(I)=RRA1
IA1(I)=IRA1
IA2(I)=IRA2
IA3(I)=IRA3
GO TO 10
END
SUBROUTINE OFFSET (XOFF,YOFF,ZOFF)
C
REAL XOFF,YOFF,ZOFF
C
WRITE(*,*)' Rotation with shifting'
XOFF=-0.0002
YOFF=+0.0004
ZOFF=-0.0002
RETURN
END
SUBROUTINE CHNAX
# (THAXI3,PHAXI3,THAXI2,PHAXI2,THAXI1,PHAXI1)
C
REAL THAXI1,PHAXI1,PHAXI2,THAXI2,PHAXI3,THAXI3,PI
PARAMETER (PI=3.14159265359)
C
THAXI3 = THAXI3 - PI*0.32
PHAXI3 = PHAXI3 + PI*0.28
THAXI2 = THAXI2 + PI*0.18
PHAXI2 = PHAXI2 - PI*0.14
THAXI1 = THAXI1 - PI*0.12
PHAXI1 = PHAXI1 + PI*0.08
C
RETURN
END
|
