2004-july.txt

acis说明文档

Dear ACIS-Alliance,
I too want to obtain a pcurve from the curve generated
by api_project_curve_to_surface(). 
I tried sg_add_pcurve_to_coedge(COEDGE*) as followed:
 
API_BEGIN
    EDGE* projected_edge = funcReturnProjectEdge();
    COEDGE *co = ACIS_NEW COEDGE(projected_edge,
FORWARD, NULL, NULL);
    sg_add_pcurve_to_coedge(co);
    
    PCURVE* Pcurve_m = co->geometry();
    if(Pcurve_m) //Pcurve_m is still NULL!!!!!!!!!
         pcurve* pcur =
Pcurve_m->equation().deep_copy();
API_END
 
The PCURVE acquired from the COEDGE is still NULL.
 
Thanks for your help,
 
Kuo-Cheng

    
>Alex,

>sg_add_pcurve_to_coedge(COEDGE*) does it.

>Hari

At 12:43 PM -0500 11/12/03, Alexander Muthler wrote:
>Dear ACIS-Alliance,
>
>when I project a curve to a surface via the
>api_project_curve_to_surface(...)   function, the
returned curve has no
>pcurve.
>Does anybody know, how to compute resp. add the
pcurve to the curve or
>coedge?
>
>Your help would be appreciated.
>
>Best Regards,
>Alex



		
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From davidkou at hkusua.hku.hk  Fri Jul 30 02:32:22 2004
From: davidkou at hkusua.hku.hk (David)
Date: Fri Jul 30 02:33:53 2004
Subject: [Acis-alliance] strange access violation in a loop
Message-ID: <[e-mail]>

Dear acis-alliance，

I tried a very simple program with ACISR13 and Visual C++ 6.0, and I found a very strange access violation problem, and I couldn't figure out why, could you give some hints?

The program pops an "access violation" message when it enters the loop the second time, i.e when i=0, the api_entity_point_distance runs, but when i=1, it crashes!!!

//////////////////////////////////////////////////////////////////////////////
for(int i=0;i<5;i++)
{
	//Error here! when i=0, ok; when i=1, fail! 
	outcome rtn1=api_entity_point_distance (pArc1, pt,closest_pos, distance);
	outcome rtn2=api_entity_point_distance (pArc2, pt,closest_pos, distance); 
}
//////////////////////////////////////////////////////////////////////////////

Detailed program source:

int main(int argc, char* argv[])
{
	api_start_modeller(0);
	api_initialize_constructors();
	api_initialize_covering (); 
	api_initialize_intersectors (); 
		
	
	//////////////////////////////////////////////////////////////////////////
	EDGE* pArc1;
	EDGE* pArc2;
	
	SPAposition center(0,0,0);
	SPAposition pt1(10,0,0);
	SPAposition pt2(20,0,0);
	SPAunit_vector ArcNormal(0,0,1);

	api_curve_arc_center_edge (center,pt1,pt1,&ArcNormal,(EDGE *&)pArc1);
	api_curve_arc_center_edge (center,pt2,pt2,&ArcNormal,(EDGE *&)pArc2);


	ENTITY_LIST EdgeList,WasteList;
	EdgeList.add((EDGE *)pArc1);
	EdgeList.add((EDGE *)pArc2);

	BODY* pGeometry=NULL;
	outcome rtn=api_cover_planar_edges(EdgeList,(BODY *&)pGeometry,WasteList);
	
	SPAposition pt(0,0,0);
	SPAposition closest_pos;
	double distance;

	
	for(int i=0;i<5;i++)
	{
		outcome rtn1=api_entity_point_distance (pArc1, pt,closest_pos, distance);
		outcome rtn2=api_entity_point_distance (pArc2, pt,closest_pos, distance); 
	}

	printf("Finished");
	//////////////////////////////////////////////////////////////////////////
	
	
	api_terminate_intersectors (); 
	api_terminate_covering();
	api_terminate_constructors();
	api_stop_modeller();

	return 0;
}

Looking forward hearing from you!

Best Regards,
David
2004-07-30

From emxmns at nottingham.ac.uk  Fri Jul 30 06:46:47 2004
From: emxmns at nottingham.ac.uk (Martin Sherburn)
Date: Fri Jul 30 06:54:31 2004
Subject: [Acis-alliance] Save file problem
Message-ID: <[e-mail]>

Hi,

I'm new to ACIS and just got the software earlier this week. I am having some serious trouble trying to get a test program running. All i want to do is create a block and save it to a .SAT file. However, whenever i try to save to a file using the "api_save_entity_list" function, i get a "Access Violation" or "Operation Unsuccessful" error. I have spent all week trying to figure it out, and i just can't see what is wrong. I am using Windows XP, MSVC .NET (v7.1). Here is the code i use to try save to file:

---------------------------------------------------
FILE* pFile;
pFile = fopen("test.sat", "w");
if (pFile)
{
	// fputs("Testing file stream is valid", pFile); - this line works when uncommented
	api_save_entity_list(pFile, TRUE, list);
	fclose(pFile);
}
---------------------------------------------------

Does anybody have any ideas what could be causing this? Its driving me nuts, please help!

Thank you,

Martin Sherburn.


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From kkarkele at hotmail.com  Fri Jul 30 09:21:52 2004
From: kkarkele at hotmail.com (kapil karkele)
Date: Fri Jul 30 09:22:12 2004
Subject: [Acis-alliance] Save file problem
Message-ID: <[e-mail]>


Hi Martin,

There can be reasons like,
1) Mismatch in the libraries you have included (mixing debug & release). 
Please check those are correct.
2) The ENTITY_LIST you are trying to save is not valid.

instead of fopen try using acis_fopen and same is for close. I hope that 
should help.

-regards,
kapil




>From: "Martin Sherburn" <[e-mail]>
>To: <[e-mail]>
>Subject: [Acis-alliance] Save file problem
>Date: Fri, 30 Jul 2004 11:46:47 +0100
>
>Hi,
>
>I'm new to ACIS and just got the software earlier this week. I am having 
>some serious trouble trying to get a test program running. All i want to do 
>is create a block and save it to a .SAT file. However, whenever i try to 
>save to a file using the "api_save_entity_list" function, i get a "Access 
>Violation" or "Operation Unsuccessful" error. I have spent all week trying 
>to figure it out, and i just can't see what is wrong. I am using Windows 
>XP, MSVC .NET (v7.1). Here is the code i use to try save to file:
>
>---------------------------------------------------
>FILE* pFile;
>pFile = fopen("test.sat", "w");
>if (pFile)
>{
>	// fputs("Testing file stream is valid", pFile); - this line works when 
>uncommented
>	api_save_entity_list(pFile, TRUE, list);
>	fclose(pFile);
>}
>---------------------------------------------------
>
>Does anybody have any ideas what could be causing this? Its driving me 
>nuts, please help!
>
>Thank you,
>
>Martin Sherburn.
>
>
>This message has been scanned but we cannot guarantee that it and any
>attachments are free from viruses or other damaging content: you are
>advised to perform your own checks.  Email communications with the
>University of Nottingham may be monitored as permitted by UK legislation.
>
>
>_______________________________________________
>Acis-alliance mailing list
>[e-mail]
>http://lists.cs.columbia.edu/mailman/listinfo/acis-alliance

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From emxmns at nottingham.ac.uk  Fri Jul 30 09:32:30 2004
From: emxmns at nottingham.ac.uk (Martin Sherburn)
Date: Fri Jul 30 09:33:15 2004
Subject: [Acis-alliance] Save file problem
Message-ID: <[e-mail]>

Kapil,

Thank you very much for your help, acis_fopen instead of fopen works! Thanks also to Anil, I had already done that though.

Martin.

>>> "kapil karkele" <[e-mail]> 30/07/2004 14:21:52 >>>

Hi Martin,

There can be reasons like,
1) Mismatch in the libraries you have included (mixing debug & release). 
Please check those are correct.
2) The ENTITY_LIST you are trying to save is not valid.

instead of fopen try using acis_fopen and same is for close. I hope that 
should help.

-regards,
kapil




>From: "Martin Sherburn" <[e-mail]>
>To: <[e-mail]>
>Subject: [Acis-alliance] Save file problem
>Date: Fri, 30 Jul 2004 11:46:47 +0100
>
>Hi,
>
>I'm new to ACIS and just got the software earlier this week. I am having 
>some serious trouble trying to get a test program running. All i want to do 
>is create a block and save it to a .SAT file. However, whenever i try to 
>save to a file using the "api_save_entity_list" function, i get a "Access 
>Violation" or "Operation Unsuccessful" error. I have spent all week trying 
>to figure it out, and i just can't see what is wrong. I am using Windows 
>XP, MSVC .NET (v7.1). Here is the code i use to try save to file:
>
>---------------------------------------------------
>FILE* pFile;
>pFile = fopen("test.sat", "w");
>if (pFile)
>{
>	// fputs("Testing file stream is valid", pFile); - this line works when 
>uncommented
>	api_save_entity_list(pFile, TRUE, list);
>	fclose(pFile);
>}
>---------------------------------------------------
>
>Does anybody have any ideas what could be causing this? Its driving me 
>nuts, please help!
>
>Thank you,
>
>Martin Sherburn.
>
>
>This message has been scanned but we cannot guarantee that it and any
>attachments are free from viruses or other damaging content: you are
>advised to perform your own checks.  Email communications with the
>University of Nottingham may be monitored as permitted by UK legislation.
>
>
>_______________________________________________
>Acis-alliance mailing list
>[e-mail] 
>http://lists.cs.columbia.edu/mailman/listinfo/acis-alliance 

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From Markus.Herb at de.TRUMPF.com  Fri Jul 30 09:43:24 2004
From: Markus.Herb at de.TRUMPF.com ([e-mail])
Date: Fri Jul 30 09:44:24 2004
Subject: [Acis-alliance] Using streams instead of file pointers with some
	API functions
Message-ID: <[e-mail]>

Dear all,
We are just reworking our software. 
All our file handling is needed to be changed to std::streams due to
external reasons.
Unfortunately there are some ACIS functions that only work with FILE* e.g.
"api_save_entity_list".

How is it possible to still use these functionalities with iostreams?

Greetings
Markus