Re: [Pythoncad-developer] New kernel

[Yagnesh D. <yn...@gm...>]

Were these queries not available in the
R37

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Best regards

Yagnesh Desai

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On Tue, Mar 2, 2010 at 10:12 PM, Matteo Boscolo
<mat...@bo...> wrote:
> Hi gertwing,
>
> We need to spatial queries like "give me all entities within (or outside) a
> rectangle", needed for a zoom or select functions.
> Or "give me the nearest entities from a given point", needed for snap and
> selection functions.
> ok
>
> May be you can create this structure in memory at startup looking of the
> bounding box …
>
> Let me know if having the bbox information in the entity table is still
> necessary ..
>
>
>
>> I don’t’ know how to improve this code
>> ..
>>
>> The name of the layer is inside
>> the pickle entity .. so I need to get all the layer and then ask to the
>> unpickle elemente the name ..
>>
>> We can store the entity type
>> with the name like this ‘LAYER_MAIN’ or “LAYER_PIPE”
>> but I do not like this sort of naming conversion for the entity type.
>>
>> Any idea?
>
> We must do the selection based on Id's.
> The id is the primary key and is indexed.
>
> When the drawing is opened PythonCAD retrieved all layers from the database,
> this is done by the pyKadKernel.getEntityFromType('LAYER').
> The layer name is presented to the user, the record id is used internally by
> PythonCAD.
> When a single layer record is needed the id of the record is used to query
> the database.
>
> So instead of
> def getEntLayer(self, layerName)
> we use
> def getEntLayer(self, layerId)
>
> This way we make full use of the database indexes and it will be lightning
> fast.
> ok
>
> I was thinking to load in memory at startup all the layer tree for fast
> access to the data … and create a class for manage all the layers..
>
>
>
> Regards,
>
> Matteo
>
>
>
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