Hi to all,
I think that is impossible that anyone not have explored this and, if no, I think that should do it.
Then I worked for see if there was any hope of getting something in 3d animated with a decent speed .
I started and the first I chose to draw a 3D sphere which is the base of all animations .
Well the result was that it was very slow and I could not figure it out . The problems that the dos batch in managing the environment and the various levels are really a maze that you never know .
However, I gave up and I tried and tried .
The following code is unfortunately not very readable format by subsequent optimizations that received to achieve the speed that today.
I had to work on keeping the environment free , use a few variables , use short names of variables and also keep the variables that are used at the top ( remember we are ordered alphabetically). This is the tricks for fast execution.
I had to put something in the algorithm of stochastic almost to lower execution times.
And also I had to pre- compute some static information . For the rest everything is calculated in real time.
The result seems to me to give space to new research possibilities in the field and good fun , with a wide margin to use external programs without slowing down too much .
Sphere 3D.cmd:
Code: Select all
@echo off & setlocal & title Sphere 3D & set /a cols=62, lines=62 & goto :Init_system
:: By einstein1969. Dedicated to jeb, dbenham, penpen, carlos, aGerman, Aacini, EdDyreen,
:: npocmaka_, Liviu, Sponge Belly, Magialisk, the users and the staff of Dostips forum.
:: Use raster font 8x8.
:Main
set /a ar=100, rt=0, ds=0, cx=cols/2, cz=4000, cY=lines/2
(
set SIN=
set _PLOT$_=
set _$PLOT_=
set _empty=
set lines=
set cols=
for /L %%\ in (1000,-1,0) do (
set /a "rt+=31416/60"
if !ds! lss 1000 set /a ds+=10
setlocal
set /a "a=(15708-rt) %% 62832, c=(a>>31|1)*a"
if !c! gtr 47124 (set /a "a=a-(a>>31|1)*62832, b=%SIN%, a=rt %% 62832, c=(a>>31|1)*a") else (if !c! gtr 15708 (set /a "a=(a>>31|1)*31416-a, b=%SIN%, a=rt %% 62832, c=(a>>31|1)*a") else set /a "b=%SIN%, a=rt %% 62832, c=(a>>31|1)*a")
if !c! gtr 47124 (set /a "a=a-(a>>31|1)*62832, a=%SIN%") else (if !c! gtr 15708 (set /a "a=(a>>31|1)*31416-a, a=%SIN%") else set /a "a=%SIN%")
for %%f in ("0 9999" "-5000 8661" "-8661 5000" "-9999 0" "-8661 -5000" "-5000 -8661" "0 -9999" "5000 -8661" "8661 -5000" "9999 0" "8661 5000" "5000 8661") do for /f "tokens=1,2" %%g in (%%f) do (
for %%t in ("3827 9239" "7071 7071" "9239 3827" "9999 0" "9239 -3827" "7071 -7071" "3827 -9239") do for /f "tokens=1,2" %%u in (%%t) do (
set /a "ax=ar*%%h/10000*%%u/10000, az=ar*%%g/10000*%%u/10000, ay=ar*%%v/10000, aax=(ax*b/10000-(ay*a/10000+az*b/10000)*a/10000)*b/10000-(ay*b/10000-az*a/10000)*a/10000, aay=(ax*b/10000-(ay*a/10000+az*b/10000)*a/10000)*a/10000+(ay*b/10000-az*a/10000)*b/10000, e=ax*a/10000+(ay*a/10000+az*b/10000)*b/10000, c=ds*aax/(e-cz)+cx, d=ds*aay/(e-cz)+cy"
if not defined L!d! set L!d!=%_empty%
if !e! lss 0 (%_$PLOT_% !c! !d! 1 %_PLOT$_%) else %_$PLOT_% !c! !d! 4 %_PLOT$_%
)
)
if not "!OT!"=="!time:~-1!" (
cls & (For /L %%l in (1,1,%lines%) do if not defined L%%l (echo() else echo( !L%%l!)>CON
if "!OT!"=="0" title Sphere 3D [%%\]
endlocal
set OT=!time:~-1!
) else endlocal
)
)
goto :eof
:Init_system
setlocal DisableDelayedExpansion
set /a cc=cols+2, ll=lines+2
(
mode %cc%,%ll% & cls
for /F "Tokens=1 delims==" %%v in ('set') do set "%%v="
set /a cols=%cols%, lines=%lines%
)
set "_$PLOT_=For /F usebackq^ tokens^=1-3 %%x in ('"
set "_PLOT$_=') do set /a f=%%x+1 & For %%w in (!f!) do set L%%y=!L%%y:~0,%%x!!g:~%%z,1!!L%%y:~%%w!"
set "SIN=(a-a*a/1920*a/312500+a*a/1920*a/15625*a/15625*a/2560000-a*a/1875*a/15360*a/15625*a/15625*a/16000*a/44800000)"
setlocal EnableDelayedExpansion
For /L %%l in (1,1,%cols%) do set "_empty=!_empty! "
set g= .±²@"
Goto :Main
einstein1969
I wanted to modify it in order to control the rotation of the sphere via WASDQZERX keys this way: