Fortraneries/Fraktalism/mkmandel.f90

49 lines
1.4 KiB
Fortran

!-----------------------------------------------------
! MANDELBROT SET
!-
! refactored Thu 29 Dec 2022 03:21:16 PM CET
! refactored Sat 31 Dec 2022 12:37:03 PM CET
! all generative parts are now in 'mandelbrots.f90' module
!-
!-----------------------------------------------------
!
! this is the main programm
!
program mkmandel
use pixrgb
use mandelbrots
implicit none
type(t_pixrgb), allocatable :: pic(:,:)
integer :: angle
real :: radangle, radius
real :: stx, sty
character (len=80) :: filename
write(0, *) "-------- making some mandelbrot -------"
allocate(pic(1024, 768))
do angle = 0, 1500
call rgbpix_set_to_zero(pic)
radangle = float(angle) * 0.01664
radius = float(angle) / 2000.0
write (filename, "(a, i5.5, a)") "frames/mandel/", angle, ".pnm"
! filename = trim(filename)
write(0,*) "#### passe ", angle, radangle, trim(filename)
stx = radius * (sin(radangle*2.07) + 0.2131*sin(radangle*7.36))
sty = radius * (cos(radangle*3.21) + 0.2725*cos(radangle*9.99))
call mandelbrot_one(pic, complex(stx, sty))
call rgbpix_spit_as_pnm_8 (pic, trim(filename))
enddo
end
!-----------------------------------------------------