2004-december.txt

acis说明文档

 
Additional information is that there are differences for the two cases
in the mmgr.log file. The first several lines of mmgr.log from the
working project are as follows.
 
*** Beginning Leak Dump ***
D:\build\acisr10\NTS\kern\kernel\spline\agspline\bs3_crv\c3curve.cxx(182
) : {0000000526} at 0x01DFFF30 32 Bytes Type: 1 Call: 27
D:\build\acisr10\NTS\kern\kernel\spline\agspline\bs3_crv\c3curve.cxx(182
) : {0000000525} at 0x01DFFF80 32 Bytes Type: 1 Call: 27
D:\build\acisr10\NTS\kern\kernel\spline\agspline\bs3_crv\c3curve.cxx(182
) : {0000000524} at 0x01DFFFD0 32 Bytes Type: 1 Call: 27
 
 
While the first several lines of the mmgr.log from the dll are as
follows.
 
*** Beginning Leak Dump ***
unknown(0) : {0000000115} at 0x01376240 9600 Bytes Type: 1 Call: 15
unknown(0) : {0000000114} at 0x01373C88 9600 Bytes Type: 1 Call: 15
unknown(0) : {0000000113} at 0x013716D0 9600 Bytes Type: 1 Call: 15
D:\build\acisr10\NTS\kern\kernel\spline\aglib\aglib_thread_ctx.c(121) :
{0000000046} at 0x013280A0 296448 Bytes Type: 1 Call: 2
 
Does anybody know what the problem could be? Any setting I need to make
for my C++ project? Does anybody know what the unknown(0) mean?
 
I will appreciate any help.
 
Thanks.
 
Zhao Dong
 
 
ZHAO, Dong
 
------------------------------------------------- 
Computational Biomechanics Lab.                  
Department of Mechanical & Aerospace Engineering
University of Florida
------------------------------------------------- 
 
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From Nilesh.Joshi at asu.edu  Tue Dec 21 16:44:19 2004
From: Nilesh.Joshi at asu.edu (Nilesh Joshi)
Date: Tue Dec 21 16:49:01 2004
Subject: [Acis-alliance] ACIS BUG (most likely)
In-Reply-To: <000901c4e6af$78254430$[e-mail]>
Message-ID: <[e-mail]>

Hi guys,
There are problems with ACIS to 203 translators with units.
interesting test case:
1. one has a model in ACIS running. (lets say a point P1(10,10,10))
    Note that ACIS is in CM units.
2. Convert the ACIS entity list to STEP AP 203.
    BY default ACIS converts to MM. (so the points goes to P2(100,100,100)
but in MM so its equivalent)
3. Convert this 203 file to some other entity list in ACIS in the same
program.
    since ACIS is still in CM, ideally it should change all values to be
consistent in CM.
    but it takes only the values from AP 203 file and assumes that the units
are CM.
    i.e. the point now becomes P3(100,100,100) in CM
    i.e. the object gets scaled 10 times.

I ran multiple test cases and here is the point result:
POINTS COMPARISON
ORIGINAL POINT                AFTER CONVERSION
0 0 25                                   0 0 250
0 -50 25                                0 -500 250
100 -50 25                            1000 -500 250
100 0 25                               1000 0 250
65 -30 25                               650 -300 250
65 -30 0                                 650 -300 0
0 -50 0                                   0 -500 0
0 0 0                                      0 0 0
100 -50 0                               1000 -500 0
100 0 0                                  1000 0 0


Since while creating this output, whichever units ACIS is working in, being
the same point, shouldn't it give me consistent values.
Please let me know if I am missing something.
Thank you.

With Regards
-Nilesh Joshi
Design Automation Laboratory
Arizona State University

*Engineering problems are under-defined, there are many solutions, good, bad
and indifferent. The art is to arrive at a good solution. This is a creative
activity, involving imagination, intuition and deliberate choice. - Ove Arup
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From zz_zxc123 at 163.com  Mon Dec 27 03:56:03 2004
From: zz_zxc123 at 163.com (=?gb2312?B?1cXRp7L9?=)
Date: Mon Dec 27 03:57:38 2004
Subject: [Acis-alliance] Help about Acis Ray-test
Message-ID: <[e-mail]>

Hello,everybody.
 
    Happy new year!!!!
 
   I met a question about ray-test in acis.
    I open a solid block and set a position(23,25,25) inside the block. Then use the function of api_ray_test_body() to test the hit-wanted. By the way, the ray direction is the block face normal and direct to outside of the block. I think that all faces shoud be hitted,but the result is that a face is not hitted.
     When I change the loop variant L from 0 to 4 and  from 4 to 6, all face were hitted.But why L is from 0 to gl(6), there is the face not hitted. Is it a bug of api_ray_test_body() or ...
  

  
    any answer is welcome.
 
 
zhang xuechang
 
 
void CHoop3View::OXXX() 
{
  int eclass;
  ENTITY* entity;
  outcome o;
  ENTITY_LIST ray_face;
  ENTITY_LIST Result;
  ENTITY_LIST entity_list;
  
  SPAposition* m_rootpoint;
  SPAunit_vector* m_normaldir;
 
  BODY* body;
 
  if(!(GetDocument()->GetAHDoc()->GetPart()->is_empty()))
  {
   
   GetDocument()->GetAHDoc()->GetPart()->get_entities(entity_list,NULL);
   int num=entity_list.iteration_count();
   for(int i=0;i<num;i++)
   {
   entity=entity_list[i];
   eclass=entity->identity();
   body=(BODY*)entity;
   if(eclass == BODY_TYPE )
   {
    int numshells = 0;
    ENTITY_LIST shells;
    o = api_get_shells( entity, shells);
    numshells = shells.count();
    for (int shellnum=0;shellnum<numshells;shellnum++)
    {
    int numfaces;
    ENTITY_LIST faces;
    o = api_get_faces( entity, faces);
    numfaces = faces.count();
    ENTITY* m_Face;
    for(int i=0;i<numfaces;i++)
    {   m_Face=faces[i];
     Face_List.add(m_Face);
    }
    }
   }
   }
 
  int gl=Face_List.iteration_count();

  m_normaldir=new SPAunit_vector[gl];
  BOOL flag;
  FACE* entity1;
  for(int l=0; l<gl;l++)
  {
   entity1=(FACE*)Face_List[l];
   if(entity1->sense()==1) flag=TRUE;
   else
    flag=FALSE;
   SURFACE* fs=entity1->geometry();
  
   if(fs->identity()==PLANE_TYPE){
    if(flag) m_normaldir[l]=-((PLANE*)fs)->normal();
      else
       m_normaldir[l]=((PLANE*)fs)->normal();
   }
 
  m_rootpoint[l].x()=23.0;
  m_rootpoint[l].y()=25.0;
  m_rootpoint[l].z()=25.0;
 
  double* param;
  API_BEGIN
  ray_face.clear();
  o=api_ray_test_body(m_rootpoint[l],m_normaldir[l],0.8,1,body,ray_face,param);
  GetDocument()->GetAHDoc()->GetAHBaseModel()->Highlight(ray_face[0],true);
  check_outcome(o);
  API_END 

   }
         
  }
 
}
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From zz_zxc123 at sjtu.edu.cn  Mon Dec 27 02:08:57 2004
From: zz_zxc123 at sjtu.edu.cn (zhangxuechang)
Date: Mon Dec 27 09:57:36 2004
Subject: [Acis-alliance] Help about ACIS Ray test
Message-ID: <001001c4ebe2$ef2b38e0$6500a8c0@zxc>

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From zz_zxc123 at sjtu.edu.cn  Mon Dec 27 03:27:37 2004
From: zz_zxc123 at sjtu.edu.cn (zhangxuechang)
Date: Mon Dec 27 09:57:43 2004
Subject: [Acis-alliance] help about Acis Ray-test
Message-ID: <001701c4ebed$ebffc180$6500a8c0@zxc>

Hello,xie.

    Happy new year!!!!

    I met a question about ray-test in acis.
    I open a solid block and set a position(23,25,25) inside the block. Then use the function of api_ray_test_body() to test the hit-wanted. By the way, the ray direction is the block face normal and direct to outside of the block. I think that all faces shoud be hitted,but the result is that a face is not hitted.
     When I change the loop variant L from 0 to 4 and  from 4 to 6, all face were hitted.But why L is from 0 to gl(6), there is the face not hitted. Is it a bug of api_ray_test_body() or ...
  
    any answer is welcome.


zhang xuechang


void CHoop3View::OXXX() 
{
  int eclass;
  ENTITY* entity;
  outcome o;
  ENTITY_LIST ray_face;
  ENTITY_LIST Result;
  ENTITY_LIST entity_list;
  
  SPAposition* m_rootpoint;
  SPAunit_vector* m_normaldir;

  BODY* body;
 
  if(!(GetDocument()->GetAHDoc()->GetPart()->is_empty()))
  {
   
   GetDocument()->GetAHDoc()->GetPart()->get_entities(entity_list,NULL);
   int num=entity_list.iteration_count();
   for(int i=0;i<num;i++)
   {
   entity=entity_list[i];
   eclass=entity->identity();
   body=(BODY*)entity;
   if(eclass == BODY_TYPE )
   {
    int numshells = 0;
    ENTITY_LIST shells;
    o = api_get_shells( entity, shells);
    numshells = shells.count();
    for (int shellnum=0;shellnum<numshells;shellnum++)
    {
    int numfaces;
    ENTITY_LIST faces;
    o = api_get_faces( entity, faces);
    numfaces = faces.count();
    ENTITY* m_Face;
    for(int i=0;i<numfaces;i++)
    {   m_Face=faces[i];
     Face_List.add(m_Face);
    }
    }
   }
   }
 
  int gl=Face_List.iteration_count();

  m_normaldir=new SPAunit_vector[gl];
  BOOL flag;
  FACE* entity1;
  for(int l=0; l<gl;l++)
  {
   entity1=(FACE*)Face_List[l];
   if(entity1->sense()==1) flag=TRUE;
   else
    flag=FALSE;
   SURFACE* fs=entity1->geometry();
  
   if(fs->identity()==PLANE_TYPE){
    if(flag) m_normaldir[l]=-((PLANE*)fs)->normal();
      else
       m_normaldir[l]=((PLANE*)fs)->normal();
   }

  m_rootpoint[l].x()=23.0;
  m_rootpoint[l].y()=25.0;
  m_rootpoint[l].z()=25.0;

  double* param;
  API_BEGIN
  ray_face.clear();
  o=api_ray_test_body(m_rootpoint[l],m_normaldir[l],0.8,1,body,ray_face,param);
  GetDocument()->GetAHDoc()->GetAHBaseModel()->Highlight(ray_face[0],true);
  check_outcome(o);
  API_END 

   }
         
  }

}
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From Nilesh.Joshi at asu.edu  Wed Dec 29 03:20:05 2004
From: Nilesh.Joshi at asu.edu (Nilesh Joshi)
Date: Wed Dec 29 03:22:40 2004
Subject: [Acis-alliance] comparing ACIS faces
In-Reply-To: <001701c4ebed$ebffc180$6500a8c0@zxc>
Message-ID: <[e-mail]>

Hi,
My task is compare 2 sets of ACIS faces.
1 set if before merge_faces command is executed and one is after that.
I am struggling to map the two sets of ACIS faces with each other.
I have tried
1. take a point on the face before conversion and check if the point
distance from a face is less than 1e-4. But this gives me invalid mapping.
Dont know why!!
    a. using test_point_tol
    b. api_entity_point_distance :: it gives absurd distances
    c. api_ptent_rel    :: says the point is always OFF the face.
2. I can not compare vertices since some vertices vanish due to merge.

BTW, I am taking the point using the function: par_box.mid()

Does anyone have any suggestion?

With Regards
-Nilesh Joshi
Design Automation Laboratory
Arizona State University

*Engineering problems are under-defined, there are many solutions, good, bad
and indifferent. The art is to arrive at a good solution. This is a creative
activity, involving imagination, intuition and deliberate choice. - Ove Arup
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From xlr_yzy at 163.com  Thu Dec 30 02:43:28 2004
From: xlr_yzy at 163.com (=?gb2312?B?eGxyX3l6eQ==?=)
Date: Thu Dec 30 02:44:02 2004
Subject: [Acis-alliance] how to create a wcs?
Message-ID: <[e-mail]>

hello acis-alliance!
I want to create a wcs using api_wcs_create ,
but it can't work ,i don't know why.
(Is the api-function that i choose wrong ?)
here is the code :
...
WCS *pWcs;
position origin(0,0,0);
position xpt(1,0,0);
position ypt(0,1,0);	
api_wcs_create(origin,xpt,ypt,pWcs);
...
thank you,any help will be appreciated!

Liru-Xu

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