diff --git a/starfield.f90 b/starfield.f90 index f83388d..b5ad811 100644 --- a/starfield.f90 +++ b/starfield.f90 @@ -1,47 +1,41 @@ +! +! BUILD A STAR FIELD +! program starfield use genplotting implicit none - write (0, '(A)') "----[ genplotting starfield ]----" - call genp_init (0, 'starfield.scratch') - call do_starfield (105) + call do_starfield (451) call genp_end (0) - contains ! --------------------------------------------------------- -subroutine plot_a_star(at_x, at_y, sz, col) +subroutine plot_a_star(at_x, at_y, sz, color) real, intent(in) :: at_x, at_y, sz - integer, intent(in) :: col + integer, intent(in) :: color integer :: idx real :: rad, xv, yv - write(0, '("plot a star ", 2F8.3)') at_x, at_y call genp_set_offset(at_x, at_y) - - do idx=0, 360, 30 - rad = 0.04 + (real(idx) * (3.14159 / 180)) + do idx=0, 360, 36 + rad = 0.042 + (real(idx) * (3.14159 / 180)) xv = sz * sin(rad) ; yv = sz * cos(rad) call genp_move(0.0, 0.0) - call genp_draw(xv, yv, col) + call genp_draw(xv, yv, color) enddo - end subroutine ! --------------------------------------------------------- subroutine do_starfield (nbstar) integer, intent(in) :: nbstar - integer idx, color real px, py, sz - do idx=0, nbstar px = (rand(0) * 10.00) - 5.00 py = (rand(0) * 10.00) - 5.00 - sz = (rand(0) * 0.16) + 0.19 + sz = (rand(0) * 0.16) + 0.16 color = 1 + mod(idx, 7) call plot_a_star(px, py, sz, color) end do end subroutine ! --------------------------------------------------------- -! --------------------------------------------------------- end program