Computer Aided Design Services Avatar
  1. OMG Specification

Computer Aided Design Services — Open Issues

  • Acronym: CAD
  • Issues Count: 11
  • Description: Issues not resolved
Open Closed All
Issues not resolved

Issues Descriptions

Documentation for CadMain::Model::unique_entities()

  • Key: CAD11-17
  • Legacy Issue Number: 5912
  • Status: open  
  • Source: CAxOPEN ( Andreas Korn)
  • Summary:

    2. The Documentation for CadMain::Model::unique_entities() and CadMain::Model::top_level_entities() says the only valid types asked for are geometric entity types but there is only mention and used CadFoundation::Entity (in the doc and in the return types). If this should really be only geometric entities, the return types could be CadBrep::BrepEntity and the documentation should be much clearer on what is allowd and what a invalid type.

  • Reported: CAD 1.1 — Wed, 23 Apr 2003 04:00 GMT
  • Updated: Fri, 6 Mar 2015 20:58 GMT

CadMain::Model interface issue

  • Key: CAD11-16
  • Legacy Issue Number: 5911
  • Status: open  
  • Source: CAxOPEN ( Andreas Korn)
  • Summary:

    CADServices 1.1
    1. In The CadMain::Model interface there is no clear way to get the DesignFeatures of a Model. The only possible way would be via top_level_entities() or unique_entities(), but these calls are for geometric entities (so it is written in the documentation).
    Proposed Solution: add a call "CadFeature::DesignFeatureSeq design_features()" to CadMain::Model. The DesignFeatures should be more clearly seperated from the BrepEntities as they are to different sights on the same data and should not be mixed per chance.

  • Reported: CAD 1.1 — Wed, 23 Apr 2003 04:00 GMT
  • Updated: Fri, 6 Mar 2015 20:58 GMT

Data in CadGeometry::EdgeTessellationStuct

  • Key: CAD11-15
  • Legacy Issue Number: 5882
  • Status: open  
  • Source: CAxOPEN GmbH ( Andreas Korn)
  • Summary:

    I have a problem understanding how to interpret the
    > vertex_number's for
    > the points in CadGeometry::EdgeTessellationStuct. I don't see
    > the need
    > for a indexing here. It is just sequencial. Are there people,
    > who want
    > to do this another way?

  • Reported: CAD 1.1 — Fri, 14 Mar 2003 05:00 GMT
  • Updated: Fri, 6 Mar 2015 20:58 GMT

CADServices 1.1 issue

  • Key: CAD11-14
  • Legacy Issue Number: 5881
  • Status: open  
  • Source: CAxOPEN GmbH ( Andreas Korn)
  • Summary:

    In the PDF document (03-02-02) for the CadServices the return value for CadFoundation::Entity::reference_position is CadUtility::PointStruct, but in the idl files it is CadUtility::PointStructSeq.
    I couldn't verify it against the newest documents (maybe newer than mine), because they were unreachable.
    Besides, the description of this method is not very helpful (at least to me). I have no clue how to interpret it.

  • Reported: CAD 1.1 — Thu, 13 Mar 2003 05:00 GMT
  • Updated: Fri, 6 Mar 2015 20:58 GMT

CadBrep::OrientedEdge interface issue

  • Key: CAD11-13
  • Legacy Issue Number: 5878
  • Status: open  
  • Source: CAxOPEN GmbH ( Andreas Korn)
  • Summary:

    The CadBrep::OrientedEdge interface has two very similar methods to get the Face/OrientedFace which uses the OrientedEdge. That's pretty redundant. Besides: Both methods deliver useful information only when the OrientedEdge belongs to one and only one Face. Otherwise an exception is generated. I don't really see the usefulness of those two method, especially since for many cases there are two Faces for the Edge and one can always traverse there via the EdgeLoop.

  • Reported: CAD 1.1 — Mon, 3 Mar 2003 05:00 GMT
  • Updated: Fri, 6 Mar 2015 20:58 GMT

CadBrep module issue

  • Key: CAD11-12
  • Legacy Issue Number: 5877
  • Status: open  
  • Source: CAxOPEN GmbH ( Andreas Korn)
  • Summary:

    In the CadBrep module there are almost always two ways to traverse the topology: from the top level entities like Body to the underlying entites like Shell, Face, Edge, ... and the other way. For example I can get from Face to the OrientedFace which aggregates the Face or I can ask the OrientedShell in which Body it is contained. This does not make much sense to me. I always thought the topology is more or less hierarchical with Body is composed of OrientedShells which has reference to Shell and so on.
    Unless I am missing something important, it is just some not so small overhead to have all those relations at hand and being uptodate with them. I would place such things in a client for I see it as application specific, if it is neccessary or not.

  • Reported: CAD 1.1 — Mon, 3 Mar 2003 05:00 GMT
  • Updated: Fri, 6 Mar 2015 20:58 GMT

method CadMain::Model::unique_ids_to_entities()

  • Key: CAD11-11
  • Legacy Issue Number: 5873
  • Status: open  
  • Source: CAxOPEN GmbH ( Andreas Korn)
  • Summary:

    The method CadMain::Model::unique_ids_to_entities() can throw the CadMain::NotValidCadType exception but unlike the other methods able to throw this does not get TypeCodes as input. If the exception is there by accident I suggest it be removed.

  • Reported: CAD 1.1 — Thu, 27 Feb 2003 05:00 GMT
  • Updated: Fri, 6 Mar 2015 20:58 GMT

description for CadMain::Model::unique_ids_to_entities() is missing

  • Key: CAD11-10
  • Legacy Issue Number: 5872
  • Status: open  
  • Source: CAxOPEN GmbH ( Andreas Korn)
  • Summary:

    In the PDF document for CADServices 1.1 (03-02-02) the description for CadMain::Model::unique_ids_to_entities() is missing

  • Reported: CAD 1.1 — Thu, 27 Feb 2003 05:00 GMT
  • Updated: Fri, 6 Mar 2015 20:58 GMT

exception CadConnection::BadParameter does not match the method anymore

  • Key: CAD11-9
  • Legacy Issue Number: 5855
  • Status: open  
  • Source: CAxOPEN GmbH ( Andreas Korn)
  • Summary:

    after changing the fourth parameter of CadConnection::CadSystem::create_model from CadFeature::ParameterSeq to CosPropertySevice::Properties recently, the exception CadConnection::BadParameter does not match the method anymore.
    It should either be changed in a similar manner or kicked out completely (it is only used by create_model).

  • Reported: CAD 1.1 — Tue, 11 Feb 2003 05:00 GMT
  • Updated: Fri, 6 Mar 2015 20:58 GMT

different tessellation structures for different kind of entities

  • Key: CAD11-7
  • Legacy Issue Number: 5850
  • Status: open  
  • Source: Anonymous
  • Summary:

    There are some different tessellation structures for different kind of entities (geometric and topologic) and some are for both (e.g. EdgeTessellationStruct). Three of the four structs have a obj_ref member with type Object.

    Issues: 1. The type Object for obj_ref is too generic. 2. Some of the tessellation structs are for the use with one single interface (ConnectedFaceTessellationStruct -> Body) while some others are used in more than one interface (EdgeTessellationStruct -> Edge, Curve). 3. In some cases the obj_ref member of a single tessellation struct references a geometric entity (Curve, Surface), in others a topologic entity (Edge, Face, Body)

    Proposed Solution: For each interface which provides tessellation (has a tessellate() method) there should be one corresponding tessellation struct with a obj_ref member of the type of the interface which generated the struct.

    Edge -> EdgeTessellationStruct Face -> FaceTessellationStruct Curve -> CurveTessellationStruct Surface -> SurfaceTessellationStruct Body -> ConnectedFaceTessellationStruct

    It would be much clearer that way and the redundancies pretty few.

  • Reported: CAD 1.1 — Wed, 29 Jan 2003 05:00 GMT
  • Updated: Fri, 6 Mar 2015 20:58 GMT

Model creation parameters

  • Key: CAD11-5
  • Legacy Issue Number: 5843
  • Status: open  
  • Source: NASA ( Russ Claus)
  • Summary:

    Where can one get the CadFeature::Parameter instances from to use in CadSystem::create_model() ?
    As far as I know, the instance of a idl interface can only be created on the server (in a get method or in a factory) and I can see no way of creating empty CadFeature::Parameter instances.
    Besides, why was CadFeature::ParameterSeq used on Model level (CadMain::Model::create_model(), CadMain::Model::get_parameter_set()) and not as in other places CosProperyService::Properties? It is not clear to me, what information is supposed to be behind these parameters.

    This looks like a valid concern. We can fix this by using either CosProperyService::Properties in place of the CadFeature::ParameterSeq or we can created a CadFeature::ParameterFactory.

    I suggest the use of Properties.

  • Reported: CAD 1.1 — Tue, 21 Jan 2003 05:00 GMT
  • Updated: Fri, 6 Mar 2015 20:58 GMT