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program moocow
dimension a(20000)
integer*4 jwg_create_handle
parameter (ix=10,iy=10,iw=150,icolor=1,width=0.0)
jx=ix/2
jy=iy/2
sx=5.0/(1.0*jx)
sy=5.0/(1.0*jy)
do j=1,iy
y=(j-jy)*sy
k=iw*(j-1)
do i=1,ix
x=(i-jx)*sx
a(k+i)=x*y
C 4.0*r(x,y)
end do
end do
ihandle=jwg_create_handle(1,'ex1.cgm')
call jwg_def_xform(ihandle)
sx=300.0/(1.0*(ix-1))
sy=300.0/(1.0*(iy-1))
call jwg_push_state(ihandle)
call jwg_add_xform(ihandle,100.0,100.0,sx,0.0,0.0,sy)
call jwg_add_xform(ihandle,-1.0,-1.0,1.0,0.0,0.0,1.0)
call jwg_pass_data(ihandle,a,ix,iy,iw)
C do i=1,5
i=0
clevel= -45+(i*15)
clevel=15.0
red=(i*1.0)/5.0
green=red
blue=red
call jwg_set_pen(ihandle,red,green,blue,0.0)
call jwg_contour(ihandle,clevel,-1,1)
C end do
call jwg_destroy_data(ihandle)
sx=5.0/(1.0*jx)
sy=5.0/(1.0*jy)
do j=1,iy
y=(j-jy)*sy
k=iw*(j-1)
do i=1,ix
x=(i-jx)*sx
a(k+i)=x*y
end do
end do
C call jwg_add_xform(ihandle,0.0,iy*1.0,1.0,0.0,0.0,1.0)
C call jwg_add_xform(ihandle,0.0,iy*0.1,1.0,0.0,0.0,1.0)
C call jwg_pass_data(ihandle,a,ix,iy,iw)
do i=1,5
clevel= -45+(i*15)
red=(i*1.0)/5.0
green=red
blue=red
C call jwg_set_pen(ihandle,red,green,blue,0.0)
C call jwg_contour(ihandle,clevel,-1,1)
end do
C call jwg_destroy_data(ihandle)
call jwg_pop_state(ihandle)
call jwg_destroy_handle(ihandle)
end
function r(x,y)
r=sqrt((x*x)+(y*y))
return
end
function sinc(a)
if(a.ne.0.)then
sinc=sin(a)/a
else
sinc=1.0
endif
return
end
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