2003-december.txt

acis说明文档

From fangzhihua422 at sina.com  Tue Dec  2 12:25:06 2003
From: fangzhihua422 at sina.com (fangzhihua422)
Date: Mon Dec  1 23:25:42 2003
Subject: [Acis-alliance]
Message-ID: <[e-mail]>

Hi,every one.
    i make a solid block in MFC,and use the method m_pAcisDoc->AddEntity(entity*) to display it ,then i want to delete the block,and add a new body in the document.how can i do this.


                                              fangzhihua
______________________________________

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From jr8b8 at umr.edu  Mon Dec  1 22:30:02 2003
From: jr8b8 at umr.edu (Ramesh, Jayant (UMR-Student))
Date: Mon Dec  1 23:31:01 2003
Subject: [Acis-alliance] hollow cylinder
Message-ID: <[e-mail]>

I need to make a" T " shaped object. But I need to make them using two
hollow intersecting cylinders. How do I do it ?
Thanks
 
 
*******************************************
Jayant Ramesh
Graduate Research Assitant
Smart Structures Lab, 
Intelligent Systems Center
Department of Mechanical Engineering
University of Missouri - Rolla
573-368-4251(R)   573-341-6558(O)
www.umr.edu/~jr8b8
 
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From paulin at mip.sdu.dk  Tue Dec  2 10:06:32 2003
From: paulin at mip.sdu.dk (Mads Paulin)
Date: Tue Dec  2 04:07:45 2003
Subject: [Acis-alliance] NURBS surface data
Message-ID: <1070355992.2104.5.camel@M2400N>

Hi,

I have loaded some objects into an ENTITY_LIST, and now I need to get
the control points, knot vectors, weights and param intervals for the
NURB representation of each face in this list, in order to construct
OpenGL nurb-objects for rendering.

Does anyone know an easy method for extracting this data from the list
??

Thanks in advance,
Mads Paulin

From Robert.Boehne at ricardo.com  Tue Dec  2 10:15:03 2003
From: Robert.Boehne at ricardo.com (Boehne, Robert)
Date: Tue Dec  2 11:15:42 2003
Subject: [Acis-alliance] hollow cylinder
Message-ID: <[e-mail]>

The most straightforward way is to create four cylinders, two for the inside, two for the outside.  Boolean Union each pair, then subtract the inside from the outside.
 
HTH,
 
Robert
-----Original Message-----
From: Ramesh, Jayant (UMR-Student) [mailto:[e-mail]]
Sent: Monday, December 01, 2003 10:30 PM
To: [e-mail]
Subject: [Acis-alliance] hollow cylinder


I need to make a" T " shaped object. But I need to make them using two hollow intersecting cylinders. How do I do it ?
Thanks
 
 
*******************************************
Jayant Ramesh
Graduate Research Assitant
Smart Structures Lab, 
Intelligent Systems Center
Department of Mechanical Engineering
University of Missouri - Rolla
573-368-4251(R)   573-341-6558(O)
www.umr.edu/~jr8b8
 
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From T.Mwinuka at postgrad.umist.ac.uk  Wed Dec  3 10:54:16 2003
From: T.Mwinuka at postgrad.umist.ac.uk (Tito Mwinuka)
Date: Wed Dec  3 05:54:24 2003
Subject: [Acis-alliance] Highlighting faces of a body.
Message-ID: <[e-mail]>

Dear acis-alliance

I have been able to retrieve and highlight the body using the following code.

FILE* pfile=fopen("c:/documents and 
settings/tmwinuka/adapter_counterbore_1.sat","r");
ENTITY_LIST elist;
outcome result=api_restore_entity_list(pfile,TRUE, elist);
m_pAcisDoc->InvalidateViews();
       for (int i=0; i<elist.count(); i++)
	{
		ENTITY* ent=elist[i];
		m_pAcisDoc->AddEntity(ent);
        	api_gi_highlight_entity(ent,TRUE);
	}

HOWEVER I have not been able to highlight face by face by going down the entity 
hierarchy. I tried this and it failed.


FILE* pfile=fopen("c:/documents and 
settings/tmwinuka/adapter_counterbore_1.sat","r");
	ENTITY_LIST elist;
	outcome result=api_restore_entity_list(pfile,TRUE, elist);
	m_pAcisDoc->InvalidateViews();
       for (int i=0; i<elist.count(); i++)
	{
		ENTITY* ent=elist[i];
		m_pAcisDoc->AddEntity(ent);

         }
               BODY* ent1=(BODY*)elist[0];
               LUMP* lump1=ent1->lump(); 
    	       SHELL* shell1=lump1->shell();
	       FACE* face1=shell1->face();
    	       api_gi_highlight_entity(face1,TRUE);


I used a sat file with only a single body, with a single lump and a single 
shell. I will be grateful if anyone can help me to sort out the problem. Of 
course I expected one face to be highlighted after body retrieval.

Tito Mwinuka
From Nilesh.Joshi at asu.edu  Thu Dec  4 17:08:50 2003
From: Nilesh.Joshi at asu.edu (Nilesh Joshi)
Date: Thu Dec  4 19:10:30 2003
Subject: [Acis-alliance] step TRANSLATOR
In-Reply-To: <[e-mail]>
Message-ID: <[e-mail]>

HI GUYS
CAN YOU PLEASE LET ME KNOW WHICH TRANSLATOR DOES ACIS USES FOR ACIS TO STEP
CONVERSION??
i.e. who is the vendor??

From fangzhihua422 at sina.com  Fri Dec  5 19:46:47 2003
From: fangzhihua422 at sina.com (fangzhihua422)
Date: Fri Dec  5 06:47:05 2003
Subject: [Acis-alliance] Memory leak
Message-ID: <[e-mail]>


HI,every one!
     when i use function:api_separate_body and separate
the given body into a list of bodies ,Memory leaks.for example:
void CAcis4Doc::OnSeparate() 
{
    int depth = 0;
    outcome r2=api_part_start_state(depth);
    API_BEGIN
	BODY *block1=NULL;
	BODY *block2=NULL;
	api_solid_block(position(0,0,0),position(50,50,50),block1);
	api_solid_block(position(10,0,0),position(40,50,50),block2);
	api_subtract(block2,block1);
	int nbody;
	BODY **bodylist;
	api_separate_body(block1,nbody,bodylist);
	
	m_pAcisDoc->AddEntity(bodylist[0]);
    API_END
    api_part_note_state(result,depth);
    m_pAcisDoc->InvalidateViews();
}
what's wrong with this and how are the memory leaks generated?

in  mmgr.log
*** Beginning Leak Dump ***
d:\acis8x\eulr\euler\kernbool\bodylump\bodylump.cxx(145) : {0000004157} at 0x04679F70 8 Bytes Type: 1 Call: 8

*** Statistics ***
Leaks: 8 Bytes
5442 allocations for 729571 Bytes
5441 deletes for 729563 Bytes
High-water-mark: 405473 Bytes
Bad delete pointers: 0
Stack high-water-mark: 11908 Bytes
Elapsed seconds: 17.825
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From paulin at mip.sdu.dk  Fri Dec  5 12:51:50 2003
From: paulin at mip.sdu.dk (Mads Paulin)
Date: Fri Dec  5 06:54:26 2003
Subject: [Acis-alliance] Facetting, normals and polygons
Message-ID: <[e-mail]>

Hi,

I would like to facet entities in an ENTITY_LIST.

I need a set of polygons, where each polygon contains a normal + three
vertices. I also need the surface normal at each vertex.

Does anyone know how to do this ?

P.S I am using ACIS R12. I have done this in earlier versions of ACIS
using facet_unfacetted_entity() and setting the proper VERTEX_TEMPLATE
with set_default_vertex_template.

Since the latter function is now obsolete, I need to use some
mesh_manger etc. It is at this point I am lost...

Thanks,
Mads Paulin

From kraftche at cae.wisc.edu  Fri Dec  5 17:50:41 2003
From: kraftche at cae.wisc.edu (Jason Kraftcheck)
Date: Fri Dec  5 18:51:06 2003
Subject: [Acis-alliance] Facetting, normals and polygons
In-Reply-To: <[e-mail]>
References: <[e-mail]>
Message-ID: <[e-mail]>

Mads Paulin wrote:
> Hi,
> 
> I would like to facet entities in an ENTITY_LIST.
> 
> I need a set of polygons, where each polygon contains a normal + three
> vertices. I also need the surface normal at each vertex.
> 
> Does anyone know how to do this ?
> 
> P.S I am using ACIS R12. I have done this in earlier versions of ACIS
> using facet_unfacetted_entity() and setting the proper VERTEX_TEMPLATE
> with set_default_vertex_template.
> 
> Since the latter function is now obsolete, I need to use some
> mesh_manger etc. It is at this point I am lost...
> 

You might start by looking at the documentation for the 
SIMPLE_INDEXED_MESH class, api_set_mesh_manager, and api_facet_entity

online/refman/generated/refman/SPAfct/class_simple_indexed_mesh.htm
online/refman/generated/refman/SPAfct/function_api_facet_entity.htm
online/refman/generated/refman/SPAfct/function_api_set_mesh_manager.htm


From paulin at mip.sdu.dk  Sat Dec  6 13:47:16 2003
From: paulin at mip.sdu.dk (Mads Paulin)
Date: Sat Dec  6 07:47:19 2003
Subject: [Acis-alliance] Facetting, normals and polygons
In-Reply-To: <[e-mail]>
References: <[e-mail]>
	 <[e-mail]>
Message-ID: <1070714836.2106.6.camel@M2400N>

Thanks for your help.

I have taken a look at the suggested documentation, but still have a
couple of questions.

How do I set the VERTEX_TEMPLATE when facetting, now that all
api_set_xxx_vertex_template functions seem to be obsolete.

If, for instance, I use a POLYGON_POINT_MESH_MANAGER and activates is
with api_set_mesh_manager, where are the generated meshes stored ??

I can see in the docs for polygon_point_mesh_manager, the the generated
mesh is pointed to by a pointer called current_mesh. How do I get this
pointer ?? It is protected, and the docs say never to derive this
class... Yet it also states that this mesh_manager class is intended to
be a base class of other mesh_manger classes... Weird ??

Mads