Dec 062017
 
Display 3D parametric surfaces, part of IRIT. C source code.
File DRAWFN3S.ZIP from The Programmer’s Corner in
Category C Source Code
Display 3D parametric surfaces, part of IRIT. C source code.
File Name File Size Zip Size Zip Type
BLEND.FUN 224 145 deflated
CONFIG.C 9836 2790 deflated
CONFIG.H 814 364 deflated
CTRL-BRK.C 2952 735 deflated
CTRL-BRK.H 863 396 deflated
DIR-GRAF.C 5138 1578 deflated
DIR-GRAF.H 568 271 deflated
DRAWFN-D.TC 1690 390 deflated
DRAWFN3D.C 18183 4569 deflated
DRAWFN3D.CFG 540 333 deflated
DRAWFN3D.DOC 5900 2768 deflated
DRAWFN3D.HLP 2921 1061 deflated
DRAWFN3D.PRJ 703 276 deflated
DRAWFN3D.TC 1690 394 deflated
DRAWFN3D.XRF 3998 979 deflated
EXPR2TRE.C 48060 8404 deflated
EXPR2TRG.H 4154 1120 deflated
EXPR2TRL.H 2700 861 deflated
GENMAT.C 6739 1154 deflated
GENMAT.H 1120 339 deflated
GETFUNC.C 11633 3208 deflated
GLASS.FUN 573 256 deflated
GRAPHGEN.C 39932 9408 deflated
GRAPHGNG.H 3722 1385 deflated
GRAPHGNL.H 983 401 deflated
MATHERR.C 4923 1512 deflated
MATHERR.H 854 423 deflated
MOBIUS.FUN 168 118 deflated
MOUSEDRV.C 14105 3775 deflated
MOUSEDRV.H 2161 833 deflated
PROGRAM.H 3429 1206 deflated
SAVEFUNC.C 17254 3974 deflated
SETPARAM.C 6634 1629 deflated
SHELL.FUN 179 114 deflated
SIN-SIN2.FUN 151 101 deflated
SINCOS.FUN 144 96 deflated
SURF1.FUN 144 95 deflated
UPDATE.NEW 580 350 deflated
VIEWOBJ.C 8862 2413 deflated
VIEWOBJ.H 1522 653 deflated

Download File DRAWFN3S.ZIP Here

Contents of the DRAWFN3D.DOC file


DRAWFN3D - 3d parametric surfaces drawing program
-------------------------------------------------

BECAUSE DRAWFN3D IS LICENSED FREE OF CHARGE, I PROVIDE ABSOLUTELY NO
WARRANTY, TO THE EXTENT PERMITTED BY APPLICABLE STATE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING, I GERSHON ELBER PROVIDE DRAWFN3D PROGRAM "AS IS"
WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT
NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
PROGRAM IS WITH YOU. SHOULD THE DRAWFN3D PROGRAM PROVE DEFECTIVE, YOU ASSUME
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.

IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW WILL GERSHON ELBER,
BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY LOST PROFITS, LOST MONIES,
OR OTHER SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR A
FAILURE OF THE PROGRAM TO OPERATE WITH PROGRAMS NOT DISTRIBUTED BY GERSHON
ELBER) THE PROGRAM, EVEN IF YOU HAVE BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY.

This program allows drawing of 3D free form explicit algebraic
surfaces of the form: x = X(u,v), y = Y(u,v), z = Z(u,v), where u,v are
the parametric domain parameters.
The program displays the surface by sampling it along its isoparametric
curves, and approximating (with settable accuracy) them as piecewise linear
polylines. It it also possible to save the surface as a collection of polygons
approximating the surface (again with settable accuracy).
As on line help is available (you can modify it (!) if you like, as it
is all saved in the drawfn3d.hlp plain ascii file).

Options:
--------
-z : displays current version and state as read from configuration file
drawfn3d.cfg (see below).

Configuration:
--------------
The program can be configured using a configuration file named drawfn3d.cfg.
This is a plain ascii file you can edit directly and set the parameters
according to the comments there. executing 'drawfn3d -z' will show the
current configuration as read from the configuration file. This file can be
in any directory which is in your path - the same place as drawfn3d.exe is
probably a good choice.
The program was mainly tested on HERCULES graphics card, some on CGA,
and almost nothing on a VGA system. However it uses the Turbo C BGI excellent
package and so there is a good chance it will work on the laters, without any
problem. I am going to fully support only HERCULES card, till I will have
enough money to buy new VGA (you can buy me one!).
The BGI autodetect feature is used, but if this fails, or the VGA mode does
not work as you expect, you can always coerce it to a specific card - see
the drawfn3d.cfg file.
The program will use 80?87 if it detects one - again uses the Turbo C 80?87
autodetect, or will run (much!) slower without it...
The program will use the mouse, if detected. If this detection fails you can
coerce it (to TRUE - exists, or FALSE) in the drawfn3d.cfg configuration file.

Usage:
------
The control of the program is performed by moving the graphical cursor along
the menu and performing EXECUTE operation (see below). Moving the cursor can
be made using the numerical keypad/arrows (shifted for faster movement) or
if mouse is available, using the mouse. Two operation are defined and allowed:
EXECUTE - the key on the keyboard, or left mouse button if exists.
ABORT - the key on the keyboard, or right mouse button if exists.
The EXECUTE operation is used to request performing the selected menu item.
The ABORT operation is used to request abortion of current operation (handy for
big data files).
In addition if the first character of the menu entry is unique (i.e. only one
menu entry starts with the letter X) that letter may be used to pick that
entry.
Each string entry (such as function) can be edited as follows:
1. Left/Right arrows : to move left and right along the line.
2. Home/End : to move to beginning/end of line.
3. Delete : to delete character cursor is on.
4. Back space : to delete one char backward.
5. Insert : toggles insert/overwrite mode. Node cursor shape is modified.
6. Esc : clear the entire line.
7. CR : to accept line and quit.
ALT-Q can be used, at any time the cursor is shown, for program abortion
exactly as 'Quit' menu item.

Expressions are regular infix expressions with regular precedence:
lowest (-, +) (*, /, %, min, max) (^) (unar -) highest. Note the modulo
operator (%) which operates on the truncated numbers. Also "min" and "max"
are provided as binary operators. The following built in functions
are also provided (sorted lexicographically):

ABS - absolute value function.
ARCCOS - arc cosine (in radians) function.
ARCSIN - arc cosine (in radians) function.
ARCTAN - arc tangent (in radians) function.
COS - cosine (in radians) function.
EXP -exponent (based e) function.
LN - logarithm (natural base) function.
LOG - logarithm (base 10) function.
SIN - sin (in radians) function.
SQR - square function
SQRT - square root function.
TAN - tangent function.

Bugs:
-----
O.k. if you do have any question, suggestion, or even want to report a bug
(including VGA problems, but I dont promise anything about this one), feel
free to send me email (see below)

Feel free to make copies of this program, and distribute them FREE of
charge, provided that all this package is distributed.
I am not going to be responsible for any damage of any kind, that this
package may cause (I always wanted to say that...), but I hope you will
enjoy it as I did my best you will. At list I enjoyed writing it.

Have Fun

Gershon Elber
[email protected]


 December 6, 2017  Add comments

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