2003-august.txt

acis说明文档

        ha_bridge, and VC++ correctly tells you that it's missing.

    ACIS R11 -- HOOPS 8.0 works after a few modifications.

        The big change here is that Spatial moved all their headers
        and libraries.  This greatly simplifies ACIS's project settings.
        You need to update the acispartviewer project settings
        accordingly.

        You can also develop in VS.NET, if you (a) get the ACIS
        R11 .NET libraries and (b) update the HOOPS ACIS
        AppWizard's skeleton files to use the R11 directories.

    ACIS R11 -- HOOPS 9.0 I don't know yet.

        I just downloaded HOOPS 9 this morning.  Haven't tested
        it yet.  AFAIK, Spatial still provides only HOOPS 8 on their
        own download site.

    Your best bet is to either upgrade to ACIS R11, or downgrade
    to HOOPS-700.  If you really want to use HOOPS 8.0 with
    ACIS 8.0, you probably need to grab HOOPS 7 anyways, and
    copy its ha_bridge component into HOOP 8, then update your
    acispartviewer project settings.  Be prepared to do some minor
    tweaking.

    N.B. I got both A8-H7 and A11-H8 .NET working.  I can
    send the relevant files on request.
--
Eric Wang
CAD Lab, School of Mechanical Engineering, Sungkyunkwan University

From mejhj at hit.edu.cn  Sat Aug 16 19:25:51 2003
From: mejhj at hit.edu.cn (=?gb2312?B?vqO7s764?=)
Date: Sat Aug 16 08:11:37 2003
Subject: [Acis-alliance] header intact
Message-ID: <003e01c363e0$c4c2c9f0$0e64640a@jhj>

thanks
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From josecegri at myrealbox.com  Sun Aug 17 13:39:40 2003
From: josecegri at myrealbox.com (pepillo)
Date: Sun Aug 17 06:40:10 2003
Subject: [Acis-alliance] bs3_surface_* question
Message-ID: <[e-mail]>

hi!

I need some help with a question about nurbs curves and surfaces. 
Actually I'm creating them with the nurbs api bs3_surface_* and bs3_curve_* 
and this return me a bs3_surface or a bs3_curve with the data of my surfaces 
or curves, but actually i need to apply transforms to them an store/restore 
to/from a file, so I guess I need to store the surfaces or curves on a ENTITY 
derived class. 

Can someone help me? How can I put an bs3_curve into an entity derived-class?
Should I create my nurbs objects in any other way?

I'll be eternally grateful to someone that can help :-)
I'm using ACIS Version 7, a bit old maybe as I think R11 is available.

Bye
Jose


From gaozhan at hkusua.hku.hk  Mon Aug 18 00:35:38 2003
From: gaozhan at hkusua.hku.hk (Gao Zhan, Jimmy)
Date: Sun Aug 17 11:40:39 2003
Subject: [Acis-alliance] transformation
Message-ID: <000001c364d5$36c35b10$5e570893@minabunny>

Hi, all,
 
1. I am confused with the two acis functions: api_transform_entity() and
api_apply_transf(). They are all used for transform objects. Their
functions and behavior look the same. Are they really the same? I think
they must have some differences.
 
2. In openGL, the transformation is sequence based. Different sequence
of rotation and translation transformation makes a different operation.
It seems to me that in acis, the sequence of sequence of rotation and
translation transformation does not matter. Even if I shift the
sequence, the ending is the same. Is that true?
 
Thank you,
 
 
Gao Zhan, Jimmy
852-2857-8615
[e-mail]
 
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From alames at sandia.gov  Mon Aug 18 09:25:17 2003
From: alames at sandia.gov (Ames, Arlo)
Date: Mon Aug 18 10:26:24 2003
Subject: [Acis-alliance] transformation
Message-ID: <[e-mail]>

1.  As I read the documentation on api_transform_entity, it does two things
that api_apply_transf doesn't:
    A.  It transforms non-BODY entities.  api_apply_transf is for modifying
the TRANSFORM object that a BODY contains.
         api_transform_entity will change the TRANSFORM of the BODY, and
will change the geometry of any non-BODY
         entity it encounters.
    B.  It can perform non-uniform scaling.  api_apply_transf simply doesn't
do this.
 
2.  Believe me, the order of operations does matter.  Period.  It is a
fundamental property of the mathematics.  Now it might
     be that you find an example where this doesn't appear to be the case
(e.g. two translations are communative), but it
     does not hold in general.
 
Arlo Ames
[e-mail]
-----Original Message-----
From: Gao Zhan, Jimmy [mailto:[e-mail]]
Sent: Sunday, August 17, 2003 9:36 AM
To: [e-mail]
Subject: [Acis-alliance] transformation


Hi, all,
 
1. I am confused with the two acis functions: api_transform_entity() and
api_apply_transf(). They are all used for transform objects. Their functions
and behavior look the same. Are they really the same? I think they must have
some differences.
 
2. In openGL, the transformation is sequence based. Different sequence of
rotation and translation transformation makes a different operation. It
seems to me that in acis, the sequence of sequence of rotation and
translation transformation does not matter. Even if I shift the sequence,
the ending is the same. Is that true?
 
Thank you,
 
 
Gao Zhan, Jimmy
852-2857-8615
[e-mail]
 
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From dar at evanston.fluent.com  Mon Aug 18 10:02:53 2003
From: dar at evanston.fluent.com (David Ratner)
Date: Mon Aug 18 10:56:50 2003
Subject: [Acis-alliance] bs3_surface_* question
References: <[e-mail]>
Message-ID: <[e-mail]>

Jose,

> Can someone help me? How can I put an bs3_curve into an entity derived-class?
> Should I create my nurbs objects in any other way?

If you have a bs3_curve cv, then

    intcurve ic (cv, 0.0, *(surface *)0, *(surface *)0);
    INTCURVE *IC = ACIS_NEW INTCURVE (ic);

If you have end-point vertices, then you can also create an EDGE:

    EDGE * e = ACIS_NEW EDGE (start_vertex, end_vertex, IC, FORWARD);

If you have a bs3_surface, then you should be able to do something similar to
construct a SPLINE and then a FACE.

However, try using api_mk_ed_int_ctrlpts() to construct an EDGE and
api_mk_fa_spl_ctrlpts() to construct a FACE directly from your NURBS data.

David

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From raphkloc at umail.univ-metz.fr  Wed Aug 20 14:30:19 2003
From: raphkloc at umail.univ-metz.fr (raphael klock)
Date: Wed Aug 20 08:36:29 2003
Subject: [Acis-alliance] Made a simple edge with acis
Message-ID: <[e-mail]>

Hello

I will made an edge with acis , but i have a
little probleme with my code i'dont understand who
is my error when i create an edge :
my source:

      CK_OK(initialize_base()) 
      CK_OK(api_start_modeller(0))
      CK_OK(api_initialize_kernel()) 
      CK_OK(api_initialize_constructors())
      CK_OK(api_initialize_booleans()) 
      CK_OK(api_initialize_clearance())  

        SPAposition sp2(10,-10,10);

        APOINT * a1= new APOINT(-10,-10,10);
	APOINT * a2= new APOINT(sp2);

	VERTEX * v1  = new VERTEX(a1);
	VERTEX * v2  = new VERTEX(a2);
	
	SPAunit_vector uv1(sp2.x() - sp1.x(),sp2.y() -
                                    
sp1.y(),sp2.z() - sp1.z());
	
	STRAIGHT * st1 = new STRAIGHT(sp1,uv1);
	EDGE * e1= new EDGE(v1,v2,st1,TRUE);

        insanity_list  * l = NULL;
	CK_OK( api_check_entity(e1,l) );

I have a probleme for the simple creation on a
vertex and i understand not  why?
(the insanity list is not null : error wih edge
and vertex and i understand not the error type)

Can you help my?

my @: [e-mail]
  

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