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|
! Shade plot demo.
! Does a variety of shade plots.
!
! Copyright (C) 2004-2016 Alan W. Irwin
!
! This file is part of PLplot.
!
! PLplot is free software; you can redistribute it and/or modify
! it under the terms of the GNU Library General Public License as
! published by the Free Software Foundation; either version 2 of the
! License, or (at your option) any later version.
!
! PLplot is distributed in the hope that it will be useful,
! but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! GNU Library General Public License for more details.
!
! You should have received a copy of the GNU Library General Public
! License along with PLplot; if not, write to the Free Software
! Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
! N.B. the pl_test_flt parameter used in this code is only
! provided by the plplot module to allow convenient developer
! testing of either kind(1.0) or kind(1.0d0) floating-point
! precision regardless of the floating-point precision of the
! PLplot C libraries. We do not guarantee the value of this test
! parameter so it should not be used by users, and instead user
! code should replace the pl_test_flt parameter by whatever
! kind(1.0) or kind(1.0d0) precision is most convenient for them.
! For further details on floating-point precision issues please
! consult README_precision in this directory.
!
program x15f
use plplot
use plfortrandemolib
use iso_c_binding, only: c_ptr, c_loc, c_f_pointer
implicit none
integer xdim, ydim, XPTS, YPTS
! xdim and ydim are the static dimensions of the 2D arrays while
! NX and NY are the defined area.
parameter( xdim = 99, XPTS = 35, ydim = 100, YPTS = 46 )
integer i, j
integer :: plparseopts_rc
real(kind=pl_test_flt) xx, yy
real(kind=pl_test_flt) z(xdim, ydim), zmin, zmax, tr(6)
! Global parameters to be used in mypltr callback
real(kind=pl_test_flt), parameter :: xmin = -1.0_pl_test_flt
real(kind=pl_test_flt), parameter :: xmax = 1.0_pl_test_flt
real(kind=pl_test_flt), parameter :: ymin = -1.0_pl_test_flt
real(kind=pl_test_flt), parameter :: ymax = 1.0_pl_test_flt
! Use tr callback?
logical, parameter :: tr_callback = .false.
! Use C pltr1 callback? (only meaningful
! if tr_callback is .false.).
logical, parameter :: pltr1_callback = .false.
! Use Fortran callback with no data? (only meaningful
! if tr_callback and pltr1_callback are .false.).
logical, parameter :: mypltr_callback = .false.
type mypltr_data_type
! Only contains data required by the mypltr_data callback
integer :: xpts_data, ypts_data
real(kind=pl_test_flt) :: xmin_data, xmax_data, ymin_data, ymax_data
end type mypltr_data_type
! Global data type to be used in mypltr_data callback
type(mypltr_data_type), target :: data
data%xpts_data = XPTS
data%ypts_data = YPTS
data%xmin_data = xmin
data%xmax_data = xmax
data%ymin_data = ymin
data%ymax_data = ymax
tr = (/ (xmax-xmin)/real(XPTS-1,kind=pl_test_flt), 0.0_pl_test_flt, xmin, &
0.0_pl_test_flt, (ymax-ymin)/real(YPTS-1,kind=pl_test_flt), ymin /)
! Process command-line arguments
plparseopts_rc = plparseopts(PL_PARSE_FULL)
if(plparseopts_rc .ne. 0) stop "plparseopts error"
! Set up color map 1
call cmap1_init2()
! Initialize plplot
call plinit()
! Set up data array
do i = 1,XPTS
xx = real(i-1 - (XPTS / 2),kind=pl_test_flt) / real(XPTS / 2,kind=pl_test_flt)
do j = 1,YPTS
yy = real(j-1 - (YPTS / 2),kind=pl_test_flt) / real(YPTS / 2,kind=pl_test_flt) - 1.0_pl_test_flt
z(i,j) = xx*xx - yy*yy + (xx - yy)/(xx*xx+yy*yy + 0.1_pl_test_flt)
enddo
enddo
call a2mnmx(z, XPTS, YPTS, zmin, zmax, xdim)
call plot1(z, XPTS, YPTS, zmin, zmax, xdim)
call plot2(z, XPTS, YPTS, zmin, zmax, xdim)
call plot3()
call plend()
contains
! Callback function that relies on global XPTS, YPTS, xmin, xmax, ymin, ymax
subroutine mypltr( x, y, xt, yt )
! These callback arguments must have exactly these attributes.
real(kind=pl_test_flt), intent(in) :: x, y
real(kind=pl_test_flt), intent(out) :: xt, yt
xt = xmin + ((xmax-xmin)/real(XPTS-1,kind=pl_test_flt))*x
yt = ymin + ((ymax-ymin)/real(YPTS-1,kind=pl_test_flt))*y
end subroutine mypltr
! Callback function that uses data argument to pass required data.
subroutine mypltr_data( x, y, xt, yt, data )
! These callback arguments must have exactly these attributes.
real(kind=pl_test_flt), intent(in) :: x, y
real(kind=pl_test_flt), intent(out) :: xt, yt
type(c_ptr), intent(in) :: data
type(mypltr_data_type), pointer :: d
call c_f_pointer(data, d)
xt = d%xmin_data + ((d%xmax_data-d%xmin_data)/real(d%xpts_data-1,kind=pl_test_flt))*x
yt = d%ymin_data + ((d%ymax_data-d%ymin_data)/real(d%ypts_data-1,kind=pl_test_flt))*y
end subroutine mypltr_data
! -------------------------------------------------------------------------
! cmap1_init1
!
! Initializes color map 1 in HLS space.
! -------------------------------------------------------------------------
! subroutine cmap1_init1()
! use plplot
! implicit none
! real(kind=pl_test_flt) i(4), h(4), l(4), s(4)
!
! i(1) = 0.0_pl_test_flt ! left boundary
! i(2) = 0.45_pl_test_flt ! just before center
! i(3) = 0.55_pl_test_flt ! just after center
! i(4) = 1.0_pl_test_flt ! right boundary
!
! h(1) = 260.0_pl_test_flt ! hue -- low: blue-violet
! h(2) = 260.0_pl_test_flt ! only change as we go over vertex
! h(3) = 20.0_pl_test_flt ! hue -- high: red
! h(4) = 20.0_pl_test_flt ! keep fixed
!
!
! l(1) = 0.5_pl_test_flt ! lightness -- low
! l(2) = 0.0_pl_test_flt ! lightness -- center
! l(3) = 0.0_pl_test_flt ! lightness -- center
! l(4) = 0.5_pl_test_flt ! lightness -- high
!
! ! call plscolbg(255,255,255)
! ! l(1) = 0.5_pl_test_flt ! lightness -- low
! ! l(2) = 1.0_pl_test_flt ! lightness -- center
! ! l(3) = 1.0_pl_test_flt ! lightness -- center
! ! l(4) = 0.5_pl_test_flt ! lightness -- high
!
! s(1) = 1.0_pl_test_flt ! maximum saturation
! s(2) = 1.0_pl_test_flt ! maximum saturation
! s(3) = 1.0_pl_test_flt ! maximum saturation
! s(4) = 1.0_pl_test_flt ! maximum saturation
!
! call plscmap1l(.false., i, h, l, s)
! end subroutine cmap1_init1
! -------------------------------------------------------------------------
! cmap1_init2
!
! Initializes color map 1 in HLS space.
! -------------------------------------------------------------------------
subroutine cmap1_init2()
use plplot
implicit none
real(kind=pl_test_flt) i(4), h(4), l(4), s(4)
i(1) = 0.0_pl_test_flt ! left boundary
i(2) = 0.45_pl_test_flt ! just before center
i(3) = 0.55_pl_test_flt ! just after center
i(4) = 1.0_pl_test_flt ! right boundary
h(1) = 260.0_pl_test_flt ! hue -- low: blue-violet
h(2) = 260.0_pl_test_flt ! only change as we go over vertex
h(3) = 20.0_pl_test_flt ! hue -- high: red
h(4) = 20.0_pl_test_flt ! keep fixed
l(1) = 0.6_pl_test_flt ! lightness -- low
l(2) = 0.0_pl_test_flt ! lightness -- center
l(3) = 0.0_pl_test_flt ! lightness -- center
l(4) = 0.6_pl_test_flt ! lightness -- high
! call plscolbg(255,255,255)
! l(1) = 0.5_pl_test_flt ! lightness -- low
! l(2) = 1.0_pl_test_flt ! lightness -- center
! l(3) = 1.0_pl_test_flt ! lightness -- center
! l(4) = 0.5_pl_test_flt ! lightness -- high
s(1) = 1.0_pl_test_flt ! maximum saturation
s(2) = 0.5_pl_test_flt ! maximum saturation
s(3) = 0.5_pl_test_flt ! maximum saturation
s(4) = 1.0_pl_test_flt ! maximum saturation
call plscmap1l(.false., i, h, l, s)
end subroutine cmap1_init2
! -------------------------------------------------------------------------
! plot1
!
! Illustrates a single shaded region.
! -------------------------------------------------------------------------
subroutine plot1(z, XPTS, YPTS, zmin, zmax, xdim)
use plplot
implicit none
integer xdim, XPTS, YPTS
real(kind=pl_test_flt) z(xdim,YPTS), zmin, zmax
real(kind=pl_test_flt) shade_min, shade_max, sh_color
integer sh_cmap
integer min_color, max_color
real(kind=pl_test_flt) sh_width, min_width, max_width
real(kind=pl_test_flt), dimension(:), allocatable :: xg, yg
sh_cmap = 0
min_color = 0
min_width = 0
max_color = 0
max_width = 0
call pladv(0)
call plvpor( 0.1_pl_test_flt, 0.9_pl_test_flt, 0.1_pl_test_flt, 0.9_pl_test_flt)
call plwind(-1.0_pl_test_flt, 1.0_pl_test_flt, -1.0_pl_test_flt, 1.0_pl_test_flt)
! Plot using identity transform
shade_min = zmin + (zmax-zmin)*0.4_pl_test_flt
shade_max = zmin + (zmax-zmin)*0.6_pl_test_flt
sh_color = 7
sh_width = 2
min_color = 9
max_color = 2
min_width = 2
max_width = 2
call plpsty(8)
if(tr_callback) then
call plshade(z(:XPTS,:YPTS), &
-1._pl_test_flt, 1._pl_test_flt, -1._pl_test_flt, 1._pl_test_flt, &
shade_min, shade_max, &
sh_cmap, sh_color, sh_width, &
min_color, min_width, max_color, max_width, .true., tr )
elseif(pltr1_callback) then
allocate( xg(XPTS), yg(YPTS) )
xg = (2.0_pl_test_flt/real(XPTS-1,kind=pl_test_flt))*arange(XPTS) - 1.0_pl_test_flt
yg = (2.0_pl_test_flt/real(YPTS-1,kind=pl_test_flt))*arange(YPTS) - 1.0_pl_test_flt
call plshade(z(:XPTS,:YPTS), &
-1._pl_test_flt, 1._pl_test_flt, -1._pl_test_flt, 1._pl_test_flt, &
shade_min, shade_max, &
sh_cmap, sh_color, sh_width, &
min_color, min_width, max_color, max_width, .true., xg, yg )
elseif(mypltr_callback) then
call plshade(z(:XPTS,:YPTS), &
-1._pl_test_flt, 1._pl_test_flt, -1._pl_test_flt, 1._pl_test_flt, &
shade_min, shade_max, &
sh_cmap, sh_color, sh_width, &
min_color, min_width, max_color, max_width, .true., mypltr )
else
call plshade(z(:XPTS,:YPTS), &
-1._pl_test_flt, 1._pl_test_flt, -1._pl_test_flt, 1._pl_test_flt, &
shade_min, shade_max, &
sh_cmap, sh_color, sh_width, &
min_color, min_width, max_color, max_width, .true., mypltr_data, c_loc(data))
endif
call plcol0(1)
call plbox('bcnst', 0.0_pl_test_flt, 0, 'bcnstv', 0.0_pl_test_flt, 0)
call plcol0(2)
call pllab('distance', 'altitude', 'Bogon flux')
end subroutine plot1
! -------------------------------------------------------------------------
! plot2
!
! Illustrates multiple adjacent shaded regions, using different fill
! patterns for each region.
! -------------------------------------------------------------------------
subroutine plot2(z, XPTS, YPTS, zmin, zmax, xdim)
use plplot
implicit none
integer xdim, XPTS, YPTS
real(kind=pl_test_flt) z(xdim,YPTS), zmin, zmax
real(kind=pl_test_flt) shade_min, shade_max, sh_color
integer sh_cmap
integer min_color, max_color
real(kind=pl_test_flt) sh_width, min_width, max_width
integer i, j
integer nlin(10), inc(2,10), del(2,10)
data nlin /1, 1, 1, 1, 1, 2, 2, 2, 2, 2/
data ( (inc(i,j), i=1,2), j=1,10) / &
450, 0, -450, 0, 0, 0, 900, 0, &
300, 0, 450,-450, 0, 900, 0, 450, &
450, -450, 0, 900/
data ( (del(i,j), i=1,2), j=1,10) / &
2000, 2000, 2000, 2000, 2000, 2000, &
2000, 2000, 2000, 2000, 2000, 2000, &
2000, 2000, 2000, 2000, 4000, 4000, &
4000, 2000/
sh_cmap = 0
min_color = 0
min_width = 0
max_color = 0
max_width = 0
sh_width = 2
call pladv(0)
call plvpor( 0.1_pl_test_flt, 0.9_pl_test_flt, 0.1_pl_test_flt, 0.9_pl_test_flt)
call plwind(-1.0_pl_test_flt, 1.0_pl_test_flt, -1.0_pl_test_flt, 1.0_pl_test_flt)
do i = 1,10
shade_min = zmin + (zmax - zmin) * (i-1) / 10.0_pl_test_flt
shade_max = zmin + (zmax - zmin) * i / 10.0_pl_test_flt
sh_color = i+5
call plpat( inc(1:nlin(i),i),del(1:nlin(i),i))
call plshade(z(:XPTS,:YPTS), &
-1._pl_test_flt, 1._pl_test_flt, -1._pl_test_flt, 1._pl_test_flt, &
shade_min, shade_max, &
sh_cmap, sh_color, sh_width, &
min_color, min_width, max_color, max_width, .true. )
enddo
call plcol0(1)
call plbox('bcnst', 0.0_pl_test_flt, 0, 'bcnstv', 0.0_pl_test_flt, 0)
call plcol0(2)
call pllab('distance', 'altitude', 'Bogon flux')
end subroutine plot2
!--------------------------------------------------------------------------
! plot3
!
! Illustrates shaded regions in 3d, using a different fill pattern for
! each region.
!--------------------------------------------------------------------------
subroutine plot3
use plplot
implicit none
real(kind=pl_test_flt) xx1(5), xx2(5), yy1(5), yy2(5), zz1(5), zz2(5)
data xx1 / -1.0_pl_test_flt, 1.0_pl_test_flt, 1.0_pl_test_flt, -1.0_pl_test_flt, -1.0_pl_test_flt/
data xx2 / -1.0_pl_test_flt, 1.0_pl_test_flt, 1.0_pl_test_flt, -1.0_pl_test_flt, -1.0_pl_test_flt/
data yy1 /1.0_pl_test_flt, 1.0_pl_test_flt, 0.0_pl_test_flt, 0.0_pl_test_flt, 1.0_pl_test_flt/
data yy2 / -1.0_pl_test_flt, -1.0_pl_test_flt, 0.0_pl_test_flt, 0.0_pl_test_flt, -1.0_pl_test_flt/
data zz1 / 0.0_pl_test_flt, 0.0_pl_test_flt, 1.0_pl_test_flt, 1.0_pl_test_flt, 0.0_pl_test_flt/
data zz2 / 0.0_pl_test_flt, 0.0_pl_test_flt, 1.0_pl_test_flt, 1.0_pl_test_flt, 0.0_pl_test_flt/
call pladv(0)
call plvpor(0.1_pl_test_flt, 0.9_pl_test_flt, 0.1_pl_test_flt, 0.9_pl_test_flt)
call plwind(-1.0_pl_test_flt, 1.0_pl_test_flt, -1.0_pl_test_flt, 1.0_pl_test_flt)
call plw3d(1._pl_test_flt, 1._pl_test_flt, 1._pl_test_flt, -1.0_pl_test_flt, 1.0_pl_test_flt, &
-1.0_pl_test_flt, 1.0_pl_test_flt, 0.0_pl_test_flt,1.5_pl_test_flt, 30._pl_test_flt, -40._pl_test_flt)
! Plot using identity transform
call plcol0(1)
call plbox3("bntu", "X", 0.0_pl_test_flt, 0, "bntu", "Y", 0.0_pl_test_flt, 0, &
"bcdfntu", "Z", 0.5_pl_test_flt, 0)
call plcol0(2)
call pllab("","","3-d polygon filling")
call plcol0(3)
call plpsty(1)
call plline3(xx1, yy1, zz1)
call plfill3(xx1(1:4), yy1(1:4), zz1(1:4))
call plpsty(2)
call plline3(xx2, yy2, zz2)
call plfill3(xx2(1:4), yy2(1:4), zz2(1:4))
end subroutine plot3
!----------------------------------------------------------------------------
! Subroutine a2mnmx
! Minimum and the maximum elements of a 2-d array.
subroutine a2mnmx(f, nx, ny, fmin, fmax, xdim)
use plplot
implicit none
integer i, j, nx, ny, xdim
real(kind=pl_test_flt) f(xdim, ny), fmin, fmax
fmax = f(1, 1)
fmin = fmax
do j = 1, ny
do i = 1, nx
fmax = max(fmax, f(i, j))
fmin = min(fmin, f(i, j))
enddo
enddo
end subroutine a2mnmx
end program x15f
|
