first video -> big commit :)
This commit is contained in:
tTh
parent
8607ff35b7
commit
3c3d1c8906
6
GravityField/.gitignore
vendored
6
GravityField/.gitignore
vendored
@ -1,9 +1,15 @@
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essai
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animation
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WS/*.pgm
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WS/*.png
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*.gif
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*.log
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*.mp4
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pov.stderr
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foo.pgm
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bar.pgm
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@ -7,10 +7,16 @@ MODOBJ = '../Modules/spitpgm.o'
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all: essai
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# ----------- modules
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realfield.o: realfield.f90 Makefile
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gfortran $(GFOPT) -c $<
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# ----------- progs
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essai: essai.f90 Makefile realfield.o
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gfortran $(GFOPT) $< realfield.o $(MODOBJ) -o $@
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animation: animation.f90 Makefile realfield.o
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gfortran $(GFOPT) $< realfield.o $(MODOBJ) -o $@
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27
GravityField/animation.f90
Normal file
27
GravityField/animation.f90
Normal file
@ -0,0 +1,27 @@
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!-----------------------------------------------------------------------
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!-
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! Project "gravity field" - Firts renderer
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!-
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!-----------------------------------------------------------------------
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program animation
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use realfield
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use spitpgm
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implicit none
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! some configuration constants
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integer, parameter :: S_WIDTH = 800
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integer, parameter :: S_HEIGHT = 600
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integer, parameter :: NB_BODY = 20
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type(massbody) :: planets(NB_BODY)
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integer :: foo
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character(len=100) :: filename
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call init_random()
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call create_some_planets(planets, 13.37, 2048, 2048)
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STOP ': YOLO TIME'
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end program
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25
GravityField/encode.sh
Executable file
25
GravityField/encode.sh
Executable file
@ -0,0 +1,25 @@
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#!/bin/bash
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if [ $# -ne 2 ] ; then
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echo
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echo "need two arguments:"
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echo " 1) source dir"
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echo " 2) mp4 filename"
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exit 1
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fi
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SDIR="$1"
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FNAME="$2"
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echo "Encoding from " $SDIR " to " $FNAME
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TITLE='---{ experimental gravity field }---'
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ffmpeg -nostdin \
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-loglevel warning \
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-y -r 30 -f image2 -i $SDIR/%05d.pgm \
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-metadata artist='---{ tTh }---' \
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-metadata title="${TITLE}" \
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-c:v libx264 -pix_fmt yuv420p \
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$FNAME
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@ -9,21 +9,30 @@ program essai
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implicit none
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type(massbody) :: planets(60)
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! some configuration constants
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integer, parameter :: S_WIDTH = 800
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integer, parameter :: S_HEIGHT = 600
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integer, parameter :: NB_BODY = 51
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type(massbody) :: planets(NB_BODY)
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integer :: foo
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character(len=100) :: filename
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call init_random()
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call create_some_planets(planets, 45e5, S_WIDTH, S_HEIGHT)
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call create_some_planets(planets, 45e5)
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do foo=0, 72
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write (filename, "(a, i5.5, a)") 'WS/A', foo, '.pgm'
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call build_and_write_a_field(640, 480, planets, filename)
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print *, trim(filename)
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do foo=0, 1999
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write (filename, "(a, i5.5, a)") 'WS/', foo, '.pgm'
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call build_and_write_a_field(S_WIDTH, S_HEIGHT, planets, filename)
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! print *, trim(filename)
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! OMG! two magic numbers, wtf?
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planets(1)%posx = planets(1)%posx + 8.08
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planets(1)%posy = planets(1)%posy + 6.42
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planets(1)%posx = planets(1)%posx + 3 + (4.5*rand())
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planets(1)%posy = planets(1)%posy + 3 + (2.1*rand())
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if (planets(1)%posx .GT. S_WIDTH) planets(1)%posx = 0.0
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if (planets(1)%posy .GT. S_HEIGHT) planets(1)%posy = 0.0
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call boulegue_les_astres(planets, 2.21)
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enddo
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STOP 'BECAUSE YOLO'
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@ -31,98 +40,21 @@ program essai
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contains
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!-----------------------------------------------------------------------
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!-
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! Yes, I know, this is a disturbing kluge, but I like it :}
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! May be, it's time to read the doc of modern Fortran
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! Et si on bougeait un peu tous ces corps planétaires ?
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!-
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subroutine init_random()
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subroutine boulegue_les_astres(astres, factor)
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type(massbody), intent(inout) :: astres(:)
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real, intent(in) :: factor
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integer, dimension(3) :: tarray
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integer :: t3
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real :: dummy
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call itime(tarray)
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t3 = 8971*tarray(1) + 443*tarray(2) + tarray(3)
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write(0, '(A,3I3,A,I6)') "sranding: ", tarray, " --> ", t3
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call srand(t3)
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! after initializing the random generator engine,
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! you MUST use it for initializing the initializer
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dummy = rand()
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write(0, *) 'dummy was ', dummy
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end subroutine
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!-----------------------------------------------------------------------
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!-
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! make a few solid body to play with...
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!-
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subroutine create_some_planets(planets, coef)
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type(massbody), intent(inout) :: planets(:)
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real, intent(in) :: coef
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integer :: foo
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! real :: quux, quuy
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character(100) :: fmt
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fmt = "(I4, ' : ', 2(F9.2, ' '), e11.3, I7)"
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do foo=1, ubound(planets, 1)
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if (foo .EQ. 1) then
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planets(1)%posx = 20
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planets(1)%posy = 20
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planets(1)%mass = 9e8
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planets(1)%serial = 1337
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else
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planets(foo)%posx = rand() * 639.999
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planets(foo)%posy = rand() * 479.999
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planets(foo)%mass = 7e6 + coef*foo
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planets(foo)%serial = foo
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endif
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write (*, fmt) foo, planets(foo)
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do foo = 2, ubound(astres, 1)
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astres(foo)%posx = astres(foo)%posx + factor*(rand() - 0.5)
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astres(foo)%posy = astres(foo)%posy + factor*(rand() - 0.5)
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enddo
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! STOP 'ABEND'
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end subroutine
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!-----------------------------------------------------------------------
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!-
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! compute a field with only one body; and write pic file
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!-
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subroutine build_and_write_a_field(szx, szy, moons, fname)
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integer, intent(in) :: szx, szy
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type(massbody), intent(in) :: moons(:)
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character(len=*), intent(in) :: fname
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real :: maxi, mini
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integer :: errcode, foo
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real, dimension(:,:), allocatable :: field, tmpf
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integer, dimension(:,:), allocatable :: greymap
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allocate(field(szx, szy), stat=errcode)
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allocate(tmpf(szx, szy), stat=errcode)
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field = 0.0
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do foo=1, ubound(moons, 1)
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call compute_a_field(tmpf, moons(foo))
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tmpf = tmpf * 0.019
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field = field + tmpf
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enddo
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maxi = maxval(field)
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mini = minval(field)
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! print *, "field: ", mini, maxi, maxi-mini
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allocate(greymap(szx, szy), stat=errcode)
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greymap = 0
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! convert from real value to 16 bits int values
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where (field < 65530.0)
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greymap = int(field)
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end where
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call spit_as_pgm_16(greymap, trim(fname))
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! make valgrind happy
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deallocate(field)
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deallocate(greymap)
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end subroutine
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!-----------------------------------------------------------------------
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!-----------------------------------------------------------------------
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43
GravityField/raytrace.sh
Executable file
43
GravityField/raytrace.sh
Executable file
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#!/bin/bash
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set -e
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POVOPT=" -q9 +a -W800 -H600 +WT2 -d -v "
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SOURCE="vision.pov"
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TMPF="/dev/shm/gravfield.png"
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# ---------------------------------------
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une_passe ()
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{
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clock=$1
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povray -i${SOURCE} -K${clock} $POVOPT -O${TMPF} 2> pov.stderr
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timestamp=$(date | tr '01' 'Ol')
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outfile=$(printf "WS/%05d.png" $clock)
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convert ${TMPF} \
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-pointsize 14 \
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-font Courier-Bold \
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-fill Orange \
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-annotate +10+16 "$timestamp" \
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${outfile}
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}
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# ---------------------------------------
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for foo in $(seq 0 1999)
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do
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echo '............' $foo
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une_passe $foo
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done
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ffmpeg -nostdin \
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-loglevel warning \
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-y -r 30 -f image2 -i WS/%05d.png \
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-metadata artist='---{ tTh }---' \
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-metadata title="Experiment on Gravity Field" \
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-c:v libx264 -pix_fmt yuv420p \
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bar.mp4
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@ -1,15 +1,20 @@
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!
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! project "gravity field"
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!
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!-----------------------------------------------------------------------
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!-
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! some functions for the project "gravity field"
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!-
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!-----------------------------------------------------------------------
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module realfield
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use spitpgm ! XXX
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implicit none
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!-----------------------------------------------------------------------
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! definition of structures
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!
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!-
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type massbody
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real :: posx, posy
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real :: heading = 33.21
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real :: speed = 1.007
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real :: mass = 1.0
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integer :: serial = 666
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end type
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@ -17,6 +22,57 @@ end type
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!-----------------------------------------------------------------------
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contains
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!-----------------------------------------------------------------------
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subroutine barycentre_bodies(astres)
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type(massbody), intent(in) :: astres(:)
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real :: cx, cy
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integer :: foo
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!-
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! May be we have to use DOUBLE RPECSION here ?
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!-
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cx = 0.0
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cy = 0.0
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do foo=1, ubound(astres, 1)
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cx = cx + astres(foo)%posx
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cy = cy + astres(foo)%posy
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enddo
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cx = cx / real(ubound(astres, 1))
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cy = cy / real(ubound(astres, 1))
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print *, cx, cy
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end subroutine
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!-----------------------------------------------------------------------
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!-
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! make a few solid body to play with...
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!-
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subroutine create_some_planets(planets, coef, sx, sy)
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type(massbody), intent(inout) :: planets(:)
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real, intent(in) :: coef
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integer, intent(in) :: sx, sy
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integer :: foo
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character(100) :: fmt
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fmt = "(I4, ' | ', 2(F10.2, ' '), ' | ', 2F9.3, ' ', e12.3, I7)"
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do foo=1, ubound(planets, 1)
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if (foo .EQ. 1) then
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planets(1)%posx = 10
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planets(1)%posy = 10
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planets(1)%mass = 7e8
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planets(1)%serial = 1337
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else
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planets(foo)%posx = rand() * real(sx-1)
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planets(foo)%posy = rand() * real(sy-1)
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planets(foo)%mass = 7e6 + coef*foo
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planets(foo)%serial = foo
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endif
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write (*, fmt) foo, planets(foo)
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enddo
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end subroutine
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!-----------------------------------------------------------------------
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function compute_gravity(fx, fy, body)
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real, intent(in) :: fx, fy
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@ -62,6 +118,71 @@ subroutine compute_a_field(field, moon)
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enddo
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enddo
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end subroutine
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!-----------------------------------------------------------------------
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!-
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! compute a field with only one body; and write a pic file
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!-
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subroutine build_and_write_a_field(szx, szy, moons, fname)
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integer, intent(in) :: szx, szy
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type(massbody), intent(in) :: moons(:)
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character(len=*), intent(in) :: fname
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real :: maxi, mini
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integer :: errcode, foo
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real, dimension(:,:), allocatable :: field, tmpf
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integer, dimension(:,:), allocatable :: greymap
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allocate(field(szx, szy), stat=errcode)
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allocate(tmpf(szx, szy), stat=errcode)
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field = 0.0
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do foo=1, ubound(moons, 1)
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call compute_a_field(tmpf, moons(foo))
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tmpf = tmpf * 0.019
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field = field + tmpf
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enddo
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maxi = maxval(field)
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mini = minval(field)
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! print *, "field: ", mini, maxi, maxi-mini
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allocate(greymap(szx, szy), stat=errcode)
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greymap = 65533
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! convert from real value to 16 bits int values
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where (field < 65530.0)
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greymap = int(field)
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end where
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call spit_as_pgm_16(greymap, trim(fname))
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! make valgrind happy
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deallocate(field)
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deallocate(greymap)
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end subroutine
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!-----------------------------------------------------------------------
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!-
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! Yes, I know, this is a disturbing kluge, but I like it :}
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! May be, it's time to read the doc of modern Fortran
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!-
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subroutine init_random()
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integer, dimension(3) :: tarray
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integer :: t3
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real :: dummy
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call itime(tarray)
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t3 = 8971*tarray(1) + 443*tarray(2) + tarray(3)
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write(0, '(A,3I3,A,I6)') "sranding: ", tarray, " --> ", t3
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call srand(t3)
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! after initializing the random generator engine,
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! you MUST use it for initializing the initializer
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do t3=1, 4
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dummy = rand()
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write(0, *) 'dummy ', t3, dummy
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enddo
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end subroutine
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!-----------------------------------------------------------------------
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!-----------------------------------------------------------------------
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@ -4,7 +4,7 @@ set -e # stop on error
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make essai
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time ./essai
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time ./essai | tee essai.log
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convert -delay 20 WS/A*.pgm foo.gif
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./encode.sh WS/ foo.mp4
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56
GravityField/vision.pov
Normal file
56
GravityField/vision.pov
Normal file
@ -0,0 +1,56 @@
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/*
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* Visualisation en 3d d'une tentative de champ gravitationnel
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*
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* tTh novembre 2022
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*/
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#version 3.7;
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global_settings {
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ambient_light rgb <0.07, 0.05, 0.05>
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assumed_gamma 1.0
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max_trace_level 6
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}
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#include "colors.inc"
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// ----------------------------------------------------------------------
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#declare HFDIR = "WS/";
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#declare HFCK = mod(clock, 2000);
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#declare HFNAME = concat(HFDIR, str(HFCK , -5, 0), ".pgm");
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#debug concat("- - - - - - - ", HFNAME, "\n")
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#declare GravityField = object
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{
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height_field {
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pgm HFNAME
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smooth // on
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translate <-0.5, 0, -0.5>
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}
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texture {
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pigment { color Gray80 }
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finish { phong 2.0 }
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}
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}
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object { GravityField scale <4, 1, 4> }
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// ----------------------------------------------------------------------
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light_source { < -2, 9.3, -7> color Gray90 }
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light_source { < -5, 9.3, -7> color Orange*0.75 }
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light_source { < -15, 2.3, 17> color Blue*0.50 }
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// ----------------------------------------------------------------------
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camera {
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location <-8, 4, 3>
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look_at <0, 0, 0>
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right x*image_width/image_height
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angle 35
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}
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// ----------------------------------------------------------------------
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Block a user