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colors_prb.f90
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program main
!*****************************************************************************80
!
!! MAIN is the main program for COLORS_PRB.
!
! Discussion:
!
! COLORS_PRB calls the test programs for COLORS.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
call timestamp ( )
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'COLORS_PRB'
write ( *, '(a)' ) ' FORTRAN90 version'
write ( *, '(a)' ) ' Simple tests for the COLORS routines.'
call test01
call test02
call test025
call test027
call test03
call test035
call test04
call test05
call test06
call test07
call test08
call test09
call test10
call test11
call test12
call test13
call test131
call test133
call test135
call test14
call test15
call test16
call test17
call test18
call test185
call test19
call test20
call test21
call test22
call test23
call test24
call test25
call test26
call test27
call test28
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'COLORS_PRB'
write ( *, '(a)' ) ' Normal end of execution.'
write ( *, '(a)' ) ' '
call timestamp ( )
stop
end
subroutine test01
!*****************************************************************************80
!
!! TEST01 tests CMY_TO_RGB, RGB_TO_CMY.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
real ( kind = 8 ) b
real ( kind = 8 ) b2
real ( kind = 8 ) c
real ( kind = 8 ) g
real ( kind = 8 ) g2
integer itest
real ( kind = 8 ) m
real ( kind = 8 ) r
real ( kind = 8 ) r2
real ( kind = 8 ) y
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'TEST01'
write ( *, '(a)' ) ' CMY_TO_RGB converts CMY to RGB colors.'
write ( *, '(a)' ) ' RGB_TO_CMY converts RGB to CMY colors;'
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' Rin Gin Bin C M Y ' &
// ' Rout Gout Bout'
write ( *, '(a)' ) ' '
itest = 0
do
itest = itest + 1
call rgb_test ( itest, r, g, b )
if ( r < 0.0D+00 ) then
exit
end if
call rgb_to_cmy ( r, g, b, c, m, y )
call cmy_to_rgb ( c, m, y, r2, g2, b2 )
write ( *, '(9f8.3)' ) r, g, b, c, m, y, r2, g2, b2
end do
return
end
subroutine test02
!*****************************************************************************80
!
!! TEST02 tests CMYK_TO_RGB, RGB_TO_CMYK.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
real ( kind = 8 ) b
real ( kind = 8 ) b2
real ( kind = 8 ) c
real ( kind = 8 ) g
real ( kind = 8 ) g2
integer itest
real ( kind = 8 ) k
real ( kind = 8 ) m
real ( kind = 8 ) r
real ( kind = 8 ) r2
real ( kind = 8 ) y
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'TEST02'
write ( *, '(a)' ) ' CMYK_TO_RGB converts CMYK to RGB colors.'
write ( *, '(a)' ) ' RGB_TO_CMYK converts RGB to CMYK colors;'
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' Rin Gin Bin C M Y ' &
// ' K Rout Gout Bout'
write ( *, '(a)' ) ' '
itest = 0
do
itest = itest + 1
call rgb_test ( itest, r, g, b )
if ( r < 0.0D+00 ) then
exit
end if
call rgb_to_cmyk ( r, g, b, c, m, y, k )
call cmyk_to_rgb ( c, m, y, k, r2, g2, b2 )
write ( *, '(10f8.3)' ) r, g, b, c, m, y, k, r2, g2, b2
end do
return
end
subroutine test025
!*****************************************************************************80
!
!! TEST025 tests GRAYSCALE_LUV, LUV_TO_XYZ_CAP, XYZ_CAP_TO_RGB709.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
integer, parameter :: n = 11
real ( kind = 8 ) b
real ( kind = 8 ) g
integer i
real ( kind = 8 ) l(n)
real ( kind = 8 ) r
real ( kind = 8 ) u(n)
real ( kind = 8 ) v(n)
real ( kind = 8 ) xcap
real ( kind = 8 ) xcapn
real ( kind = 8 ) xn
real ( kind = 8 ) ycap
real ( kind = 8 ) ycapn
real ( kind = 8 ) yn
real ( kind = 8 ) zcap
real ( kind = 8 ) zcapn
real ( kind = 8 ) zn
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'TEST025'
write ( *, '(a)' ) ' GRAYSCALE_LUV determines the appropriate CIE LUV'
write ( *, '(a)' ) ' coordinates for a grayscale.'
write ( *, '(a)' ) ' LUV_TO_XYZ_CAP converts LUV to XYZ colors;'
write ( *, '(a)' ) ' XYZ_CAP_TO_RGB709 converts XYZ to RGB709 colors;'
write ( *, '(a)' ) ' '
write ( *, '(a,i3)' ) ' The number of grays is ', n
call grayscale_luv ( n, l, u, v )
!
! Determine the (X,Y,Z) coordinates of the illuminant.
!
ycapn = 1.0D+00
call name_to_xyz ( 'D65', xn, yn, zn )
call xyy_to_xyz_cap ( xn, yn, xcapn, ycapn, zcapn )
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' L u v ' // &
'X Y Z R G B'
write ( *, '(a)' ) ' '
do i = 1, n
call luv_to_xyz_cap ( l(i), u(i), v(i), xcap, ycap, zcap, xcapn, &
ycapn, zcapn )
call xyz_cap_to_rgb709 ( xcap, ycap, zcap, r, g, b )
write ( *, '(9f8.3)' ) l(i), u(i), v(i), xcap, ycap, zcap, r, g, b
end do
return
end
subroutine test027
!*****************************************************************************80
!
!! TEST027 tests GRAYSCALE_RGB.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
integer, parameter :: n = 11
real ( kind = 8 ) b(n)
real ( kind = 8 ) g(n)
integer i
real ( kind = 8 ) r(n)
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'TEST027'
write ( *, '(a)' ) ' GRAYSCALE_RGB determines the appropriate RGB'
write ( *, '(a)' ) ' coordinates for a grayscale.'
write ( *, '(a)' ) ' '
write ( *, '(a,i3)' ) ' The number of grays is ', n
call grayscale_rgb ( n, r, g, b )
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' R G B'
write ( *, '(a)' ) ' '
do i = 1, n
write ( *, '(3f8.3)' ) r(i), g(i), b(i)
end do
return
end
subroutine test03
!*****************************************************************************80
!
!! TEST03 tests HLS_TO_RGB, RGB_TO_HLS.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
real ( kind = 8 ) b
real ( kind = 8 ) b2
real ( kind = 8 ) g
real ( kind = 8 ) g2
real ( kind = 8 ) h
integer itest
real ( kind = 8 ) l
real ( kind = 8 ) r
real ( kind = 8 ) r2
real ( kind = 8 ) s
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'TEST03'
write ( *, '(a)' ) ' HLS_TO_RGB converts HLS to RGB colors.'
write ( *, '(a)' ) ' RGB_TO_HLS converts RGB to HLS colors;'
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' Rin Gin Bin H L S ' &
// ' Rout Gout Bout'
write ( *, '(a)' ) ' '
itest = 0
do
itest = itest + 1
call rgb_test ( itest, r, g, b )
if ( r < 0.0D+00 ) then
exit
end if
call rgb_to_hls ( r, g, b, h, l, s )
call hls_to_rgb ( h, l, s, r2, g2, b2 )
write ( *, '(9f8.3)' ) r, g, b, h, l, s, r2, g2, b2
end do
return
end
subroutine test04
!*****************************************************************************80
!
!! TEST04 tests HSV_TO_RGB, RGB_TO_HSV.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
real ( kind = 8 ) b
real ( kind = 8 ) b2
real ( kind = 8 ) g
real ( kind = 8 ) g2
real ( kind = 8 ) h
integer itest
real ( kind = 8 ) r
real ( kind = 8 ) r2
real ( kind = 8 ) s
real ( kind = 8 ) v
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'TEST04'
write ( *, '(a)' ) ' HSV_TO_RGB converts HSV to RGB colors.'
write ( *, '(a)' ) ' RGB_TO_HSV converts RGB to HSV colors;'
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' Rin Gin Bin H S V ' &
// ' Rout Gout Bout'
write ( *, '(a)' ) ' '
itest = 0
do
itest = itest + 1
call rgb_test ( itest, r, g, b )
if ( r < 0.0D+00 ) then
exit
end if
call rgb_to_hsv ( r, g, b, h, s, v )
call hsv_to_rgb ( h, s, v, r2, g2, b2 )
write ( *, '(9f8.3)' ) r, g, b, h, s, v, r2, g2, b2
end do
return
end
subroutine test035
!*****************************************************************************80
!
!! TEST035 tests HSI_TO_RGB, RGB_TO_HSI.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
real ( kind = 8 ) b
real ( kind = 8 ) b2
real ( kind = 8 ) g
real ( kind = 8 ) g2
real ( kind = 8 ) h
real ( kind = 8 ) i
integer itest
real ( kind = 8 ) r
real ( kind = 8 ) r2
real ( kind = 8 ) s
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'TEST035'
write ( *, '(a)' ) ' RGB_TO_HSI converts RGB to HSI colors;'
write ( *, '(a)' ) ' HSI_TO_RGB converts HSI to RGB colors;'
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' Rin Gin Bin ' // &
'H S I Rout Gout Bout'
write ( *, '(a)' ) ' '
itest = 0
do
itest = itest + 1
call rgb_test ( itest, r, g, b )
if ( r < 0.0D+00 ) then
exit
end if
call rgb_to_hsi ( r, g, b, h, s, i )
call hsi_to_rgb ( h, s, i, r2, g2, b2 )
write ( *, '(9f8.3)' ) r, g, b, h, s, i, r2, g2, b2
end do
return
end
subroutine test05
!*****************************************************************************80
!
!! TEST05 tests LAB_TO_XYZ_CAP, XYZ_CAP_TO_LAB.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
integer, parameter :: ntest = 17
real ( kind = 8 ) astar
real ( kind = 8 ) bstar
integer itest
real ( kind = 8 ) lstar
real ( kind = 8 ) nm
real ( kind = 8 ), parameter :: nmhi = 700.0D+00
real ( kind = 8 ), parameter :: nmlo = 380.0D+00
real ( kind = 8 ) temp
real ( kind = 8 ) x
real ( kind = 8 ) xcap
real ( kind = 8 ) xcap2
real ( kind = 8 ) xcapn
real ( kind = 8 ) xn
real ( kind = 8 ) y
real ( kind = 8 ) ycap
real ( kind = 8 ) ycap2
real ( kind = 8 ) ycapn
real ( kind = 8 ) yn
real ( kind = 8 ) z
real ( kind = 8 ) zcap
real ( kind = 8 ) zcap2
real ( kind = 8 ) zcapn
real ( kind = 8 ) zn
ycapn = 1.0D+00
call name_to_xyz ( 'D65', xn, yn, zn )
call xyy_to_xyz_cap ( xn, yn, xcapn, ycapn, zcapn )
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'TEST05'
write ( *, '(a)' ) ' LAB_TO_XYZ_CAP converts L*a*b* to XYZ colors.'
write ( *, '(a)' ) ' XYZ_CAP_TO_LAB converts XYZ to L*a*b* colors;'
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' Illuminant XYZ color coordinates:'
write ( *, '(3g14.6)' ) xcapn, ycapn, zcapn
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' NM Xin Yin Zin L* a*' &
// ' b* Xout Yout Zout'
write ( *, '(a)' ) ' '
do itest = 1, ntest
nm = ( real ( ntest - itest, kind = 8 ) * nmlo &
+ real ( itest - 1, kind = 8 ) * nmhi ) &
/ real ( ntest - 1, kind = 8 )
call nm_to_xyz ( nm, x, y, z )
ycap = 0.95D+00 * ycapn
call xyy_to_xyz_cap ( x, y, xcap, ycap, zcap )
!
! Make sure every component of (XCAP,YCAP,ZCAP) is smaller than
! (XCAPN,YCAPN,ZCAPN).
!
temp = 1.0D+00
if ( 0.0D+00 < xcap .and. 0.0D+00 < xcapn ) then
temp = min ( temp, 0.95D+00 * xcapn / xcap )
end if
if ( 0.0D+00 < ycap .and. 0.0D+00 < ycapn ) then
temp = min ( temp, 0.95D+00 * ycapn / ycap )
end if
if ( 0.0D+00 < zcap .and. 0.0D+00 < zcapn ) then
temp = min ( temp, 0.95D+00 * zcapn / zcap )
end if
xcap = xcap * temp
ycap = ycap * temp
zcap = zcap * temp
call xyz_cap_to_lab ( xcap, ycap, zcap, xcapn, ycapn, zcapn, &
lstar, astar, bstar )
call lab_to_xyz_cap ( lstar, astar, bstar, xcap2, ycap2, zcap2, &
xcapn, ycapn, zcapn )
write ( *, '(f5.1,3f8.3,3f9.3,3f8.3)' ) &
nm, xcap, ycap, zcap, lstar, astar, bstar, xcap2, ycap2, zcap2
end do
return
end
subroutine test06
!*****************************************************************************80
!
!! TEST06 tests LCC_TO_RGBPRIME, RGBPRIME_TO_LCC.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
real ( kind = 8 ) b
real ( kind = 8 ) bprime
real ( kind = 8 ) bprime2
real ( kind = 8 ) chroma1
real ( kind = 8 ) chroma2
real ( kind = 8 ) g
real ( kind = 8 ) gprime
real ( kind = 8 ) gprime2
integer itest
real ( kind = 8 ) luma
real ( kind = 8 ) r
real ( kind = 8 ) rprime
real ( kind = 8 ) rprime2
real ( kind = 8 ) yb
real ( kind = 8 ) yg
real ( kind = 8 ) yr
yr = 0.299D+00
yg = 0.587D+00
yb = 0.114D+00
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'TEST06'
write ( *, '(a)' ) ' LCC_TO_RGBPRIME converts LCC to R''G''B'' colors;'
write ( *, '(a)' ) ' RGBPRIME_TO_LCC converts R''G''B'' to LCC colors.'
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' R''in G''in B''in Luma Chroma1 ' &
// 'Chroma2 R''out G''out B''out'
write ( *, '(a)' ) ' '
itest = 0
do
itest = itest + 1
call rgb_test ( itest, r, g, b )
if ( r < 0.0D+00 ) then
exit
end if
call rgb_to_rgbprime ( r, g, b, rprime, gprime, bprime )
call rgbprime_to_lcc ( rprime, gprime, bprime, yr, yg, yb, luma, chroma1, &
chroma2 )
call lcc_to_rgbprime ( luma, chroma1, chroma2, yr, yg, yb, &
rprime2, gprime2, bprime2 )
write ( *, '(9f8.3)' ) rprime, gprime, bprime, luma, chroma1, &
chroma2, rprime2, gprime2, bprime2
end do
return
end
subroutine test07
!*****************************************************************************80
!
!! TEST07 tests LCC_TO_YCBCR, YCBCR_TO_LCC.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
real ( kind = 8 ) chroma1in
real ( kind = 8 ) chroma1out
real ( kind = 8 ) chroma2in
real ( kind = 8 ) chroma2out
real ( kind = 8 ) cb
real ( kind = 8 ) cr
integer itest
real ( kind = 8 ) lumain
real ( kind = 8 ) lumaout
real ( kind = 8 ) y
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'TEST07'
write ( *, '(a)' ) ' LCC_TO_YCBCR converts LCC to YCBCR colors;'
write ( *, '(a)' ) ' YCBCR_TO_LCC converts YCBCR to LCC colors.'
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' Luma Chroma1 Chroma2 Y'' Cb' &
// ' Cr Luma Chroma1 Chroma2'
write ( *, '(a)' ) ' '
itest = 0
do
itest = itest + 1
call ycc_test ( itest, lumain, chroma1in, chroma2in )
if ( lumain < 0.0D+00 ) then
exit
end if
call lcc_to_ycbcr ( lumain, chroma1in, chroma2in, y, cb, cr )
call ycbcr_to_lcc ( y, cb, cr, lumaout, chroma1out, chroma2out )
write ( *, '(9f8.3)' ) lumain, chroma1in, chroma2in, y, cb, cr, lumaout, &
chroma1out, chroma2out
end do
return
end
subroutine test08
!*****************************************************************************80
!
!! TEST08 tests LCC_TO_YCC, YCC_TO_LCC.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
real ( kind = 8 ) c1in
real ( kind = 8 ) c1out
real ( kind = 8 ) c2in
real ( kind = 8 ) c2out
real ( kind = 8 ) chroma1
real ( kind = 8 ) chroma2
integer itest
real ( kind = 8 ) luma
real ( kind = 8 ) yin
real ( kind = 8 ) yout
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'TEST08'
write ( *, '(a)' ) ' LCC_TO_YCC converts LCC to PhotoYCC colors.'
write ( *, '(a)' ) ' YCC_TO_LCC converts PhotoYCC to LCC colors;'
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' Yin C1in C2in Luma Chroma1' &
// ' Chroma2 Yout C1out C2out'
write ( *, '(a)' ) ' '
itest = 0
do
itest = itest + 1
call ycc_test ( itest, yin, c1in, c2in )
if ( yin < 0.0D+00 ) then
exit
end if
call ycc_to_lcc ( yin, c1in, c2in, luma, chroma1, chroma2 )
call lcc_to_ycc ( luma, chroma1, chroma2, yout, c1out, c2out )
write ( *, '(9f8.3)' ) yin, c1in, c2in, luma, chroma1, chroma2, yout, &
c1out, c2out
end do
return
end
subroutine test09
!*****************************************************************************80
!
!! TEST09 tests LIN_TO_NONLIN, NONLIN_TO_LIN.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
integer i
real ( kind = 8 ) r
real ( kind = 8 ) r2
real ( kind = 8 ) rprime
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'TEST09'
write ( *, '(a)' ) ' LIN_TO_NONLIN converts linear to nonlinear RGB;'
write ( *, '(a)' ) ' NONLIN_TO_LIN converts nonlinear to linear RGB.'
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' Rin R'' Rout'
write ( *, '(a)' ) ' '
do i = -1, 26
r = real ( i, kind = 8 ) / 25.0D+00
call lin_to_nonlin ( r, rprime )
call nonlin_to_lin ( rprime, r2 )
write ( *, '(9f8.3)' ) r, rprime, r2
end do
return
end
subroutine test10
!*****************************************************************************80
!
!! TEST10 tests LUV_TO_XYZ_CAP, XYZ_CAP_TO_LUV.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
integer, parameter :: ntest = 17
integer itest
real ( kind = 8 ) lstar
real ( kind = 8 ) nm
real ( kind = 8 ), parameter :: nmhi = 700.0D+00
real ( kind = 8 ), parameter :: nmlo = 380.0D+00
real ( kind = 8 ) temp
real ( kind = 8 ) unprime
real ( kind = 8 ) ustar
real ( kind = 8 ) vnprime
real ( kind = 8 ) vstar
real ( kind = 8 ) wnprime
real ( kind = 8 ) x
real ( kind = 8 ) xcap
real ( kind = 8 ) xcap2
real ( kind = 8 ) xcapn
real ( kind = 8 ) xn
real ( kind = 8 ) y
real ( kind = 8 ) ycap
real ( kind = 8 ) ycap2
real ( kind = 8 ) ycapn
real ( kind = 8 ) yn
real ( kind = 8 ) z
real ( kind = 8 ) zcap
real ( kind = 8 ) zcap2
real ( kind = 8 ) zcapn
real ( kind = 8 ) zn
ycapn = 1.0D+00
call name_to_xyz ( 'D65', xn, yn, zn )
call xyy_to_xyz_cap ( xn, yn, xcapn, ycapn, zcapn )
call xyz_cap_to_uvwprime ( xcapn, ycapn, zcapn, unprime, vnprime, wnprime )
write ( *, '(a)' ) ' '
write ( *, '(a)' ) 'TEST10'
write ( *, '(a)' ) ' LUV_TO_XYZ_CAP converts L*u*v* to XYZ colors.'
write ( *, '(a)' ) ' XYZ_CAP_TO_LUV converts XYZ to L*u*v* colors;'
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' Illuminant XYZ color coordinates:'
write ( *, '(3g14.6)') xcapn, ycapn, zcapn
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' Illuminant u''v''w'' color coordinates:'
write ( *, '(3g14.6)' ) unprime, vnprime, wnprime
write ( *, '(a)' ) ' '
write ( *, '(a)' ) ' NM Xin Yin Zin L* u*' &
// ' v* Xout Yout Zout'
write ( *, '(a)' ) ' '
do itest = 1, ntest
nm = ( real ( ntest - itest, kind = 8 ) * nmlo &
+ real ( itest - 1, kind = 8 ) * nmhi ) &
/ real ( ntest - 1, kind = 8 )
call nm_to_xyz ( nm, x, y, z )
ycap = 0.95D+00 * ycapn
call xyy_to_xyz_cap ( x, y, xcap, ycap, zcap )
!
! Make sure every component of (XCAP,YCAP,ZCAP) is smaller than
! (XCAPN,YCAPN,ZCAPN).
!
temp = 1.0D+00
if ( 0.0D+00 < xcap .and. 0.0D+00 < xcapn ) then
temp = min ( temp, 0.95D+00 * xcapn / xcap )
end if
if ( 0.0D+00 < ycap .and. 0.0D+00 < ycapn ) then
temp = min ( temp, 0.95D+00 * ycapn / ycap )
end if
if ( 0.0D+00 < zcap .and. 0.0D+00 < zcapn ) then
temp = min ( temp, 0.95D+00 * zcapn / zcap )
end if
xcap = xcap * temp
ycap = ycap * temp
zcap = zcap * temp
call xyz_cap_to_luv ( xcap, ycap, zcap, xcapn, ycapn, zcapn, lstar, ustar, &
vstar )
call luv_to_xyz_cap ( lstar, ustar, vstar, xcap2, ycap2, zcap2, &
xcapn, ycapn, zcapn )
write ( *, '(f5.1,3f8.3,3f9.3,3f8.3)' ) &
nm, xcap, ycap, zcap, lstar, ustar, vstar, xcap2, ycap2, zcap2
end do
return
end
subroutine test11
!*****************************************************************************80
!
!! TEST11 tests NAME_TO_PRIMARIES, PRIMARIES_TO_Y.
!
! Licensing:
!
! This code is distributed under the GNU LGPL license.
!
! Modified:
!
! 31 October 2006
!
! Author:
!
! John Burkardt
!
implicit none
real ( kind = 8 ) bx
real ( kind = 8 ) by
real ( kind = 8 ) gx
real ( kind = 8 ) gy
real ( kind = 8 ) rx
real ( kind = 8 ) ry
real ( kind = 8 ) wx
real ( kind = 8 ) wy
real ( kind = 8 ) yb
real ( kind = 8 ) yg