Comments on Google SketchUp API Blog: Reading Textures from a SketchUp Model Using the R...

I looked at the SketchUp API and IT WAS DISAPPOINT...

2008-11-11T19:31:00.000-08:00

I looked at the SketchUp API and IT WAS DISAPPOINTING. It's the usual deal: no overview, just a listing of calls with one line descriptions (If you are lucky) and a few poorly documented example programs that don't do anything useful. It's like whoever did them got bored after half an hour and figured "you can sort it out yoursef". Before you code anything with that SDK, you'll have to waste a lot of time reverse engineering what Google were too damned lazy to write down. I'd rank this down there with the original version of DirectX for lazy documentation.

Poor Effort, Google!

This is going to be a great blog! Thanks for the u...

2008-10-25T16:16:00.000-07:00

This is going to be a great blog! Thanks for the update after so many long months. :-D Can't wait to read more from you guys! ;-)

Steve, I think you should also include a "SketchUp...

2008-10-23T08:00:00.000-07:00

Steve, I think you should also include a "SketchUp_i.c" file where those IID_### defined. You may find this file in SDK.

Sigh :(I now get a linker error.error LNK2001: unr...

2008-10-23T03:41:00.000-07:00

Sigh :(

I now get a linker error.

error LNK2001: unresolved external symbol "struct _GUID const IID_ISkpCorrectPerspective" (?IID_ISkpCorrectPerspective@@3U_GUID@@B)

Can anyone tell me exactly what files I need to have in my VC++ project to allow me to create a triangulated mesh from a skp face?

Does anyone know any forums where the skp C++ SDK is discussed?

Many thanks

>> Where can I find this?All sorted. I found sketc...

2008-10-22T08:34:00.000-07:00

>> Where can I find this?
All sorted. I found sketchupinterfaces.h in sdk\SkpToXMLExample\SketchUp\, and a few other directoris.

>> Does your file include sketchupinterfaces.h ?It...

2008-10-22T08:20:00.000-07:00

>> Does your file include sketchupinterfaces.h ?

It doesn't. I guess this is the problem. Where can I find this?

Many thanks.

PS: Any general tips for using the SDK are more than welcome. :)

Does your file include sketchupinterfaces.h ?

2008-10-22T08:02:00.000-07:00

Does your file include sketchupinterfaces.h ?

>> This should worktexture_writer->QueryInterface(...

2008-10-22T07:48:00.000-07:00

>> This should work
texture_writer->QueryInterface(IID_ISkpCorrectPerspective, (void**)&perspective);

I get the following error:

"error C2065: 'IID_ISkpCorrectPerspective' : undeclared identifier"

I'm using VC++ 2005.

This should worktexture_writer->QueryInterface(IID...

2008-10-22T07:36:00.000-07:00

This should work
texture_writer->QueryInterface(IID_ISkpCorrectPerspective, (void**)&perspective);

Hi,I can't get this code from the blog to compile....

2008-10-22T06:58:00.000-07:00

Hi,

I can't get this code from the blog to compile. Can anyone help?

ISkpCorrectPerspective* perspective = NULL;
texture_writer->QueryInterface(IID_ISkpCorrectivePerspective, &perspective);

I've also tried:

ISkpCorrectPerspective* perspective = NULL;
texture_writer->QueryInterface(IID_ISkpCorrectPerspective, &perspective);

Thanks

I downloaded the SketchUp C++ SDK today and could ...

2008-10-18T12:03:00.000-07:00

I downloaded the SketchUp C++ SDK today and could not find information on how to develop a SketchUp plug-in DLL. The SDK documentation mentions a few things, but not nearly enough to actually build a plug-in from scratch. Do you happen to have the C++ source code of a sample SketchUp plugin that you can share. If yes, please send me something at deelip (at) sycode (dot) com

Hello! I've got interesting behaviour while using ...

2008-10-16T08:12:00.000-07:00

Hello! I've got interesting behaviour while using ISkpUVHelper with subcomponents... Let me describe.

There is a component in scene contains a face and other component (this subcomponent contains, for example, two faces). I'm applying material to a top-level component and it is distributed to all the faces in components geometry (they all haves "default" material).

I'm surely using ISkpFace::GetUVHelperWithTextureHandle() and ISkpTextureWriter2::LoadComponentInstance() to get handles. Such way I receive handles for both top-level and sub- components, they differs.

So when I loading faces of subcomponent I'm using corresponding texture handle, but it results wrong texture coordinates. For top-level component's face it is ok (with it's handle).

Most interesting is that when I use texture handle of top-level component for subcomponent UVHelper, it works correctly.

I also have to notice the subcomponent doesn't have applied texture.

So does it mean I should check if there's no material and use the parent's component texture handle for child's faces?..

Thanks a lot!

// SketchUp v6.4.112

If you want to apply texture to a face that is par...

2008-10-08T08:16:00.000-07:00

If you want to apply texture to a face that is part of a component, you will want to use GetUVHelperWithTextureHandle to retrieve the uv helper, using the handle of the parent component instance. Textures read through the texture writer are linearly interpolated, therefore if the q value is used at all, it is used as a scale factor.

If only it worked as easily as that. It appears th...

2008-10-08T03:03:00.000-07:00

If only it worked as easily as that. It appears that the units the uvs come in depend on whether the face has its own material, or inherits a material from a parent component or group. The scaling on the uvs change depending on which case. Also, it's not clear to me whether I need to write (u,v), ((u/q),(v/q)), or even (u*xscale,v*yscale), or indeed (u*xscale/q,v*yscale/q). Results of my export vary on how the textures were applied and I'm struggling to find a way to export the right data for all cases.

Thanks for the tip, but I don't understand what th...

2008-10-03T02:27:00.000-07:00

Thanks for the tip, but I don't understand what the ISkpCorrectPerspective* object is doing. I get no difference in the UVS or CreateMesh regardless as to whether I pass a perspective object or NULL. Could you explain why I want to go through the "effort" to create one?