[Plugin] ShadowProjector

djh

Thank you very much, Driven and TIG. Also, I exploded all the components and groups. It works wonderfully.

TIG

You don't need to explode everything.
But you do need to select the face[s] to receive the shadow outlines.
This means they do need to be in the same context, but then you could edit the container and select the face ?

djh

This means they do need to be in the same context, but then you could edit the container and select the face ?[/quote]

What does it mean "in the same context"?

djh

Having problems, even when I redrew the model as simply as possible.

Shadow.skp

TIG

Thanks ofr the example SKP.
I do agree that it fails.
But the info I get from the Ruby Console is helpful to see what is wrong.
I'll look at how it might be recoded to resolve the issue.

Incidentally, you model contains some reversed faces inside the grouped 'walls' and several bits of hidden geometry [View > Hidden Geometry > ON] around the tops/ends of some walls.
Although they shouldn't cause issues it's good practice to tidy your model as you go.
With them gone it still fails, so they're not the cause of the issue...
I will fix it.

Watch for updates/announcements...

TIG

Here's v1.5 http://sketchucation.com/pluginstore?pln=TIG_shadowProjector It fixes a problem which resulted from instances [groups/components] sat directly 'on' a shaded-face, and sometimes not casting a shadow below them.
It should now be more robust and cope with raw geometry, groups and components placed directly on top of the shaded-face.
It works properly with @djh's example SKP !

Dave R

Thanks for the update. I'm still getting unexpected results. See the attached screen shot. The edges of the projected "shadow" are 500 meters long and extend down below the face on the ground plane and away from the sun.

Screenshot - 3_10_2015 , 8_42_48 PM.png

TIG

Thanks Dave, I too have seem some issues and I'm working on a fix...
The face should be 1km long NOT 500m !!

Dave R

Half is better than none.

djh

TIG, thanks for the advice to clean up the model.

I'm sorry, I still got the same results. I don't know how you were able to do it with the same model. Also, you mentioned before, "This means they do need to be in the same context, but then you could edit the container and select the face?" What does it mean "in the same context"?

SketchProjector 002.jpg

TIG

I'm working on a fix...

TIG

Here's v2.0 http://sketchucation.com/pluginstore?pln=TIG_shadowProjector
It is completely rewritten to be faster ad more robust...

TIG

Here's v3.0 http://sketchucation.com/pluginstore?pln=TIG_shadowProjector Along with ignoring Hidden faces/objects and those assigned OFF Layers, it now respects transparent faces [<70% opacity] which won't cast shadows, and similarly faces with the default-material faces within a container that itself has a transparent material and which doesn't then cast a shadow etc.
Objects with cast/receive shadows 'unchecked' settings are now fully respected in the shadow analysis.
Faces which shade themselves [because they face away from the sun] are automatically assigned 100% shading with no further analysis...
A glitch with report writing if type was 'lines' is now resolved.

Dave R

Latest version installed. Get this in console when trying to run the tool.

Error: #<NoMethodError: undefined methodeach' for nil:NilClass>
C:/Users/Dave/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/TIG-ShadowProjector/TIG-ShadowProjector_Code.rb:127:in new' C:/Users/Dave/AppData/Roaming/SketchUp/SketchUp 2015/SketchUp/Plugins/TIG-ShadowProjector/TIG-ShadowProjector_Loader.rb:18:in block in module:ShadowProjector'
SketchUp:1:in call'

TIG

Obviously it shouldn't do that
Did you have a face preselected ?
I'm on to it...

Dave R

I did have a single face, correctly oriented selected. I tried it first on a chair model I was working on at the time when I got that message. I quit SU and restarted. Then tried it with a simple box in a component and an ungrouped face. Same result.

TIG

Here's v3.1 http://sketchucation.com/pluginstore?pln=TIG_shadowProjector
It fixes a glitch caused by a simple typo.
The test for 'receive-shadows' for a container being unchecked was inadvertently being run even if the selected face were in the model entities, which of course cannot have that set !
Now resolved.
Thanks Dave for feedback...

Dave R

Glad to help, sir. I'll give it a try when I get home from work and let you know.

d

Dave R

I tried it on a simple box and face. It worked fine. Tried it on a slightly more complicated model and it splatted, twice. I can send you the SKP if you wish.