Posts made by mrapsouthern

That's great and really helpful thanks

Hello

Does anyone know of a plugin that would allow me to specify a table of say 50 xyz co-ordinates and then add a copy of group to each location?

I.e. rather than manually finding the coordinate and copy pasting each one?

Thanks
A

Thanks,ThomThom tool done it better than I could have imagined. Just saved my weekend! !

Hi,

Is there a plugin that will allow me to find corners that are within a given distance of each other?

For example a third party piece of software I have can give the following information about a sketchup model. This issue with it is that I have to go back to sketchup to "merge" the points somehow. As sketchup doesn't number the corners and planes like this it can be VERY tedious to find the offending corners.

I'd like to do this check in sketchup directly, with the corners highlighted somehow.

"Corner 1045 is nearly (within 10 mm) same as 1039 in plane 570
Corner 1032 is nearly (within 10 mm) same as 516 in plane 562
Corner 506 is nearly (within 10 mm) same as 505 in plane 562"

Thanks in advance

Great - I must have changed the style by accident. Thanks

Hi,

I assigned a lot of materials (just colors) to my model. While using orbit, for some reason, all the material colors become invisible. I cant get them back - tried restarting.

The entity info suggests the materials are still assigned to one face. I tried reversing faces to see it was on the inside. but its not.

Is there some way to show/hide material colors?

Thanks
Alex

Hi,

Is there a way to automatically delete all edges in a model/selection that do not complete a face?

Secondly, is there a way to automatically draw the faces for edges that already do form a valid face. i.e. instead of drawing over the existing edge to create the face?

Thanks
Alex

Merging vertices looks like it helps for that case. I can't check it for multiple holes though right now. Thanks

Glenn,

Small world. I know Jonathan well also. Have we met?

Anyway, Yes, if the faces with holes are partitioned as shown the output of SU2CATT is interpreted correctly.

Cheers
A.

@gullfo said:

slightly off-topic:
http://gamma.cs.unc.edu/propagation/main.pdf
http://sketchucation.com/forums/viewtopic.php?t=36063

It is off topic - but I am very familiar with that work - it's quite a coincidence you posted it....

Hi,

To update my previous post -

Any 1 face with ANY number of holes can be divided into 2 faces with no holes.

where the number of required dividing lines is defined by,

NumDividingLines = NumHoles + 1

please see the following diagram as illustration.

Alex

Got a solution in theory...

What I need is a plugin that will allow me to select a face with one (or multiple) holes in it and then divide that face in some way so that there would be multiple faces without holes.

i.e. for each hole in a face you only need to add two lines to split the face with 1 hole into 2 faces without holes.

Similarly,
a face with 2 holes requires 4 dividing lines and results in 3 faces with no holes.
a face with 3 holes requires 6 dividing lines and results in 4 faces with no holes.
a face with 4 holes requires 8 dividing lines and results in 5 faces with no holes.

This solution would mean you can represent a complex geometry with holes without splitting the whole model into triangles.

Is there anything already out there?

Thanks
Alex

@Pilou Basically the exporter and 3rd party software I use cause the hole to be filled in. It looks like the OBJ exporter you used exported the underlying triangles defined by Sketchup.

I can achieve the same by using a triangulation plugin prior to export.

That is as far as I have got. As you have also shown, it works, but the issue is that the triangles are very skinny/narrow/spikey (however you want to describe them).

I think this is as good as it can be, but the skinny triangles are not desirable. The only way to avoid them that I can see is to approximate the hole with fewr polygons, at it is the curves that cause the thin triangles.

Thanks for your help. Further suggestions are welcome though.

Cheers
Alex

Hi,

I export using http://www.rahe-kraft.de/cms/su2catt/index.htm

Just to be clear, I want the hole to be present.

I could use a triangulation plugin, this does solve the problem in theory (and practice sometimes).

However, for the acoustic software it is better to reduce the number of polygons and also to avoid skinny/narrow/spikey triangles.

Thanks
Alex

Hi,

I tried and it works with the simple example I gave.

BUT for the following real case pictured, it does not.
Does it work for you?

Ultimately the problem is that the 3rd party software does not see a hole. The bounding rectangle fills the hole in. Hence why I need to split it up before export.

Here is the SKP file:
http://dl.dropbox.com/u/22511393/example.skp

Hi,

Using Sketchup 8 Basic. Windows 7.

I need a plugin to first triangulate a face.
Then I need to reduce those triangles into fewer irregular polygons.

Does anyone know of one or two separate plugins that would do the job? I have a lot of these situations and I want to avoid drawing these convex polygons manually.

The image shows an example starting point which is bad and an example of what would be interpreted correctly with the 3rd party software I'm using.

Thanks
Alex