2004-february.txt

acis说明文档

Subject: [Acis-alliance] SAT format
Message-ID: <[e-mail]>


Did you ever find the meaning of data in SAT file?


Jon A. Prisbe (Kforce Inc.)
Accelerate Software Developer
[e-mail]
616-698-4876


>Hi, dear friends,
>I am a beginner of ACIS. I am using ACIS 7.0. I want to know exactly the
meaning of data in SAT file. example:
>3 shell $-1 -1 $-1 $-1 $-1 $4 $-1 $1 #
> 4 face $-1 -1 $-1 $5 $6 $3 $-1 $7 >>forward single #
>5 face $-1 -1 $-1 $8 $9 $3 $-1 $10 reversed single #
>6 loop $-1 -1 $-1 $-1 $11 $4 #
>7 plane-surface $-1 -1 $-1 0 0 15 0 0 1 1 0 0 forward_v I I I I #
>Can anyone kindly explain the meaning of data? Any response is appreciated.
> regards shaohui
From itagaki at armonicos.co.jp  Tue Feb  3 10:40:50 2004
From: itagaki at armonicos.co.jp (=?ISO-2022-JP?B?GyRCSEQzQElwSScbKEI=?=)
Date: Mon Feb  2 20:37:30 2004
Subject: [Acis-alliance] fatal error LNK1104
In-Reply-To: <[e-mail]>
References: <[e-mail]>
Message-ID: <[e-mail]>

Hello Gordon

You should set build option on C/C++ page then select category ->
preprocessor.
Add NT,ACIS_DLL,NT_DLL  : release
    NT,ACIS_DLL,NT_DLLD : debug 

try that please.

On Mon, 2 Feb 2004 15:41:42 +0000 (GMT)
gordon baylor <[e-mail]> wrote:

> James,
> Thank you for the reply. However, I tried what you
> said and am still getting the same error. The only
> thing that doesn't seem to match is that when I went
> to edit my included libraries it was called 
> SpaBased.dll instead of SpaBased.lib - does this make
> any difference.
> 
> Thanks again
> Gordon
> 
> 
> 
> 
> 
> Gordon,
> 
> Yes, it has to do with the renaming of the libraries
> in R11.  In your
> project settings you will have to go to the link tab
> and edit your 
> included
> libraries.  I think the one you are looking for is
> SpaBased.lib or
> SpaBase.lib, depending if you are making a debug
> build.  You will also 
> have
> to change the rest of the library names if you are
> using other parts 
> (e.g.
> SPAAVisd.lib SpaACISd.lib, SpaPartd.lib, etc.)  You
> can find the names 
> of
> all of these libraries in the documentation or you can
> just look in the
> $(A3DT)\lib\NT_DLL folder to find the names.  
> 
> Also, all of the header files have been put in one
> directory,
> $(A3DT)\include, so you will need to go to the C/C++
> tab and change the
> include directories.  You should be able to delete all
> of the Acis 
> related
> ones and just put $(A3DT)\include to replace all of
> them.  
> 
> Hope this helps.
> 
> James
> 
> -----Original Message-----
> From: [e-mail]
> [mailto:[e-mail]] On
> Behalf Of gordon 
> baylor
> Sent: Friday, January 30, 2004 10:52 AM
> To: [e-mail]
> Subject: [Acis-alliance] fatal error LNK1104
> 
> Hello everyone,
> I am trying to get a simple console application
> running but I am getting link error:
> 
> LINK : fatal error LNK1104: cannot open file
> "baseutil.lib"
> Error executing link.exe.
> 
> I have ACIS R11. Does anybody know what the problem
> is? Is it anything to do with baseutil.lib being
> replaced by SpaBase
> Thanks in advance.
> 
> Gordon
> 
> 
> 
> 
> 	
> 	
> 		
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----------------------------------------------------
Takehiko Itagaki mailto:[e-mail]
Armonicos Co., Ltd. APD ( Application Project Division )
Act Tower 21F, 111-2 Itaya-machi, Hamamatsu, Shizuoka, 430-7721 JAPAN
Phone [phone]  ([phone]
Fax    [phone]
----------------------------------------------------

From Markus.Herb at de.TRUMPF.com  Wed Feb  4 14:09:23 2004
From: Markus.Herb at de.TRUMPF.com ([e-mail])
Date: Wed Feb  4 08:14:59 2004
Subject: [Acis-alliance] From gi/gl husk to HOOPS?
Message-ID: <[e-mail]>

Hi dear ACIS fans,

I'm porting our application from ACIS 7 to the most recent ACIS 12 SP5.

One thing that disturbs is, that spatial no longer supports the gi/gl husk
and suggests instead to use the newer HOOPS for visualization purposes.

Since i'm not very familiar with gi/gl let alone HOOPS i'm now searching
some kind of tutorial or cross reference to move from gi/gl to HOOPS.

Any help welcome

Greetings
Markus
From ywenbo at tom.com  Tue Feb 10 18:37:49 2004
From: ywenbo at tom.com (Yang Wenbo)
Date: Tue Feb 10 05:36:53 2004
Subject: [Acis-alliance] How to rotate patterned body
Message-ID: <002401c3efc1$f3ca8bd0$501a75ca@walker>

Hi,

I used the following code(acisR10) to rotate patterned body: 

//////////////////////////////////////////////////////////////////////
 BODY* roller;
 // Create a roller
 api_solid_cylinder_cone(SPAposition(0, 0, 0), SPAposition(24, 0, 0), 20, 20, 20, NULL, roller);

 SPAvector disp(70,0,0);
 SPAtransf translate_trans=translate_transf(disp);
 api_apply_transf((ENTITY*)roller,translate_trans);
 SPAtransf rotate_trans=rotate_transf(PI/8,SPAvector(0,0,1));
 api_apply_transf((ENTITY*)roller,rotate_trans);
 SPAtransf translate_trans2=translate_transf(SPAvector(0,180,0));
 api_apply_transf((ENTITY*)roller,translate_trans2);

 // Create a pattern
  pattern* pat = NULL;
  SPAposition center(0, 180, 0);
  SPAvector normal(0, 0, 1);
  int num_angular = 8;
  int num_axial = 1;
  double spacing = 0.0;
  api_cylindrical_pattern(pat, center, normal, num_angular, num_axial, spacing);
  // Apply the pattern to the prism
  api_set_entity_pattern(roller, pat);
  // Clean up
 pat->remove();
 
//rotate the patterned roller
 api_apply_transf((ENTITY*)roller,rotate_trans);
/////////////////////////////////////////////////////////////////////////////////////

The following is the sat file created.

1000 0 1 0           
32 Xi'an Jiaotong University - 10.0 12 ACIS 10.0 NT 24 Tue Feb 10 17:09:45 2004 
1 9.9999999999999995e-007 1e-010 
body $-1 -1 $1 0 0 $2 $-1 $3 F #
APATTERN $-1 -1 @44 DOMAIN(VEC(0,180,0)+VEC(0,0,1)*0*X2,0,7,0,0) 
                   0 
                  @78 VEC(-1,0,0)*COS(0.7853981633974483*X+0)+VEC(0,1,0)*SIN(0.7853981633974483*X+0) 
                   0 
                  @10 VEC(0,0,1) 
                   0 
                  @8 null_law @8 null_law @8 null_law 0 F 
                   #
lump $-1 -1 $1 0 0 $-1 $4 $0 F #
transform $-1 -1 0.92387953507477749 0.3826834261762756 0 -0.3826834261762756 0.92387953507477749 0 0 0 1 0 0 0 1 rotate no_reflect no_shear #
shell $-1 -1 $1 0 0 $-1 $-1 $5 $-1 $2 F #
face $-1 -1 $1 0 0 $6 $7 $4 $-1 $8 forward single F F #
face $-1 -1 $1 0 0 $9 $10 $4 $-1 $11 forward single F F #
loop $-1 -1 $1 0 0 $12 $13 $5 F unknown #
………………

it can be seen from the object created that the roller be rotated firstly and then be patterned. 
it is the reverse steps I wanted.
any help will be appreciated.

Yang Wenbo
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From prwolfe at sandia.gov  Wed Feb 11 10:53:40 2004
From: prwolfe at sandia.gov (Wolfenbarger, Paul R)
Date: Wed Feb 11 12:54:12 2004
Subject: [Acis-alliance] RE: ITS CAD
Message-ID: <[e-mail]>

Matthew,

This is a regular question from many ACIS users both experienced and not.  I
often feel like I should write a paper on the silly thing, so here goes a
start.  If I get a bit to much for you, just slap my hand and tell me to
Keep It Simple S.

Spatial does not use the standard memory functionality as you are aware.
The Bulletin Board system relies on a number of memory tricks to keep
regular new/malloc and delete/free from working on all items derived from
ENTITY (and a number which are not - you get to guess on those each time.)
This system was designed for the convenience of a CAD system (AutoCAD) and
is not designed for people running a simulation where roll back/forward
capabilities are of little or no importance.

How it works

Any call starting with api_ is wrapped in a macro set of API_BEGIN/END.  If
there is no open Bulletin Board, the BEGIN macro will open one, otherwise,
it opens a sub-BB which will get wrapped into the next higher level one.
These macros also start some error handling and declare a scope and an
outcome object for that error handling named result (so if you declare one
of your own be sure to use another name or scope it.)  The code in the
function then goes about creating and modifying stuff as it likes and the
memory system keeps a running log of it in the form of BB entries that are
actually copies of the entities at each modification/delete.  As you can
imagine, this adds a lot of memory in a hurry.  The API_END call then checks
result for errors, sets up a few other catch blocks, and ends the scope.  It
also ends the bulletin board or sub-board.

So how do we go about recovering this memory stored in the BB?  And what
happens in a call like yours where there is no BB open?

If there is no BB open, a number of calls will fail, but some may work.  The
bad news is that either way, the copies that belong on the BB were created
and now exist in limbo and cannot be deleted.  Spatial provides methods for
dealing with BB's such as api_note_state, api_delete_ds, api_change_state,
and a few others.  None of these will function if an active BB exists, so
they must be at a top level.  So if I want to remove the stored memory from
the BB system I can use something like.

   if (_global_api_level() == 0) // checks to see that a BB is not open
   {
      DELTA_STATE* ds = NULL ;

#ifndef NDEBUG
      cout << check_free_lists() << " " ;  // This spits out a large amount
of memory debugging info
#endif
      outcome res = api_note_state(ds) ; // retrieves the delta from the
last time this was done till now - may cover several boards.

      error_handling(res, "noteState", "api_note_state") ;
  
      if (ds) 
      {
         res = api_delete_ds(ds) ; // asks the memory system to remove the
boards in this delta state 
                      //- NOTE: The memory is not returned to the operating
system, but only to the freelist
                      //- managed by the ACIS kernel.  This means the next
time you ask for memory it will be
                      //- allocated from the free list rather than having to
ask the OS for more memory.
         error_handling(res, "noteState", "api_delete_ds") ;
      }

#ifndef NDEBUG      
      cout << check_free_lists() << endl ;  // again the debugging info so
you can see the difference.
   }
   else 
   {
      cout << "\n WARNING! noteState() called from inside an API
function\n";
#endif
   }  

For the type of work you are doing, the simplest thing would be to remove
the memory subsystem entirely and let the simple and fast new/delete
functions from C++ (or malloc/free from C) do the work without any
additional programming right?  Not in my experience.  The freelist method is
considerably faster than the OS memory request are since large contiguous
memory block can be requested and optimal use strategies utilized.  So what
about the pain of calling all of the above code every time you use an api
function of your own or spatials?  There are essentially 3 choices.

1) API_NOP_BEGIN/API_NOP_END - This is a set of macros designed to do
something similar to the above work for you (actually tries not to store the
copies in the first place).  The problem is that there must be no higher
level bulletin board open (despite what any documentation might tell you),
although the leak is much smaller than what you would have without the NOP
and using the cleanup shown.

2) Re-compile the acis memory manager to eliminate this behavior.  The
mmgr.cxx and freelist.cxx files are given to you (as of acis 7 I believe),
so you can try re-working these.  A number of macros are present in the code
to affect the compilation including one to turn everything off
(-DMMGR_DISABLED.)  I did try this once and was not happy with the speed of
the results, and have never spent the time to try and get a better
combination of macros done (see the bewildering array of them in mmgr.hxx),
mainly because the NOP/cleanup processes work as well as they do.  This was
not available on acis 6.

3) initialize_base allows you to pass in new allocation routines that can
customize the memory system to your uses.  If I was a major long-running
consumer app, I might go this route, but the cost of getting this just right
for a small project or a student project is likely a bit much.

3a) ignore it and let the system recover things at exit.  I admit I do a
good bit of this as most of my apps do not run long enough for this to be a
problem, but I know that ITS can easily run into problems with long runs and
tight memory spaces on the parallel machines.

So we are left with something like 

API_NOP_BEGIN
  hit* blarg = raytest_face(...) ;
API_NOP_END

Ok, so this covers memory that was used during the call you make to
raytest_face, but what about the memory returned from the function?  If you
do not do anything, it will be leaked.  If you have the above and then call
api_del_entity or delete on the hits will there be a problem with items put
on the BB?  Does it need to be inside the BEGIN/END macro or does it matter?

hit is derived from ACIS_OBJECT rather than ENTITY which should put it into
the freelist system, but not onto a bulletin board as that is done in the
ENTITY constructor.  So we should be able to delete them whenever we wish
taking the scoping of the API_NOP_BEBIN/END macros into account and using
the overloaded delete (just use ACIS_DELETE and you should be ok for future
changes.)  If you do not delete them, you get a typical heap-type leak
behavior with the exception that the memory is in the freelist rather than
the OS heap.  As always, this will be cleared up when the program exits (not
when you call api_stop_modeller as far as I can tell.)

Well, this was a bit long, but it contains a good bit of data I have gleaned
from my experience with memory clean-up and from a number of generations of
ACIS documentation (most of this is there, but it is a bit scattered.)  I am
posting this to the acis alliance as well in the hopes that it will help
someone else and so I will have a permanent copy to add to the next time
this comes up (I think this is the third time I have written something
similar.)

If this does not help, please feel free to ask whatever will help clear
things up.

----------------------------------------------------------------------------
------------
Paul R. Wolfenbarger, P.E., M.S.
Advanced Engineering & Manufacturing Software Development
Intelligent Systems and Robotics Center
Sandia National Laboratories
P.O. Box 5800   MS 1010
Albuquerque, NM  87185-1010
505-844-5458 phone 
505-844-8323 fax
[e-mail]
http://www.sandia.gov/isrc
----------------------------------------------------------------------------
------------


-----Original Message-----
From: mrm3499 [mailto:[e-mail]]
Sent: Tuesday, February 10, 2004 5:15 PM
To: [e-mail]
Subject: ITS CAD


Paul,

Hi this Matthew Martin, I'm a student intern for dept 15341 working on the
ITS 
CAD geometry engine. I was hoping you could answer a few questions for me 
about ACIS 6.

I'm having a problem with ACIS and memory leaks. I need to call the 
raytest_face function a few billion times, but unfortunately it is slow and 
seems have a memory leak. I was hoping that you could explain how to use the

API_BEGIN and API_NOP_BEGIN macros, along with any other engine settings
that 
will increase performance and reduce memory usage. The only functionality I 
need out of ACIS is the raytest_face command.

These are the initializing procedures that I call:

  api_start_modeller(0);
  api_initialize_constructors();
  api_initialize_intersectors();
  api_initialize_kernel();
  api_initialize_spline();
  api_initialize_booleans();
  api_initialize_euler_ops();
  api_logging(FALSE);


and then I call raytest_face a few billion times:

hit* face_hit = raytest_face(ray_name,face_name);

Do I need to delete the entries in the returned hit list each time? How can
I 
keep the bulletin board from slowing me down and using up memory? Should I 
wrap this call in macros?

Thanks for your help; I find that the ACIS manual lacks an explanation of 
these topics, so your help and time is really appreciated.

-Matthew Martin
[e-mail]



From zz_zxc123 at cims.sjtu.edu.cn  Mon Feb 16 11:36:18 2004
From: zz_zxc123 at cims.sjtu.edu.cn (zhang xuechang)
Date: Sun Feb 15 22:36:07 2004
Subject: [Acis-alliance] How to get a bounding box in acisR11
Message-ID: <001201c3f43e$0c6fd070$c300a8c0@zxc>

Hello,everyone！
    I want to get a bounding box of a spline face. Now my program was written as fellow,but it is wrong when running in the <SPAposition ttt=bx->high()>. I know the error that is in the function of bound(). So please tell me how to get a bounding box in AcisR11.

         api_make_torus(50,10,pBody);
         SPAbox* bx =pBody->bound();
         SPAposition ttt=bx->high();

  any help is my appreciation.

zhang xuechang
2004.2.16
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