barkest

remove shadows (external render)

21 posts in this topic

Posted (edited)

In an effort to improve my rendering I have a model I made way back in VW2011. I have been playing around with this for a short-while and I have removed the building from the background but is there a reasonable way to remove shadows? (I want to put them onto another layer so I can then overlay onto a background in PS

 

I have tried several ways so far but nothing too great. A single colour render and then selecting out the shadows in PS is my best effort so far but I may have missed something

 

thank you

Screen Shot 2017-03-16 at 12.18.27.png

Edited by barkest
added more info
0

Share this post


Link to post
Share on other sites

Select your light source & untick Cast Shadows

Each of the Render Styles as well as Open Gl and Custom Renderworks have the option to Show Shadows (or not)

eg. View>Rendering>Open GL Options>Use Shadows

0

Share this post


Link to post
Share on other sites

Note - Textures can be designed to themselves cast shadows or not.

This is useful for cases where you want the light to penetrate a surface or where shadows just get in the way eg a lighting instrument lens or lighting truss, or to respect the laws of physics eg a model box.

0

Share this post


Link to post
Share on other sites

thanks bcd

 

I want the shadows but I need to separate them from the render (hope that makes sense)

 

 

0

Share this post


Link to post
Share on other sites

You could turn off colors to create a whiteboard effect and possibly use that as a multiplier layer in PS but I don't think there is a way to isolate the shadows on their own.

Take a look at Ambient Occlusion also - it produces a very nice internal corner effect

1

Share this post


Link to post
Share on other sites

Yes that was my option as well just thought someone else might have a better idea.

 

thank you

0

Share this post


Link to post
Share on other sites

Posted (edited)

What it sounds like you're trying to do is get the shadows from the building & entourage that being cast on the ground surface, which you want to replace with a photo background in Photoshop.

 

Luis's response below is the best method to create a 'shadow pass' in Vw.

 

Another option would be to use the new 2017 Camera Match functionality, I think it would do what you're trying to achieve without having to use Photoshop.

Edited by rDesign
0

Share this post


Link to post
Share on other sites

I'd try making a copy of that viewport and render it using artistic lines and shadows. Make the lines super thin and make the shadows black.  You'll have the model white solid. If you were thinking on using Photoshop then the deleting the whiteness will be easy.

Screen Shot 2017-03-16 at 11.18.11 AM.png

2

Share this post


Link to post
Share on other sites

Thank you Luis

 

I will give it a go.

 

Also, there were two things you said that I have been thinking about:

 

1. The detail is important

2. Rendering is like painting

 

From that I took an 'old' beach hut render and as time allows I will work on it with those two points in mind.

 

I just added a beach towel over the rail and a blanket on the beach itself for more interest. Following Josh's input as well I will take away all of the sharp edges and also work on making the textures more realistic and 'dirty' as well.

 

Here are the two added items.

Screen Shot 2017-03-16 at 15.22.21.png

1

Share this post


Link to post
Share on other sites

Posted (edited)

Ok worked perfectly.

 

Edges set to white and shadow set to red for easy selection.

 

In PS one click solution

 

thank you very much

Screen Shot 2017-03-16 at 15.33.27.png

Screen Shot 2017-03-16 at 15.34.59.png

Edited by barkest
0

Share this post


Link to post
Share on other sites

Posted (edited)

Thank you for the help today. I achieved my first goal which was to separate out the objects and the shadows in a quick and easy way.

 

I have put an image of the results and to help others I have included the .psd file. Please shout if you are interested in this technique

 

thanks

beach_hut_cut_out_shadows_and_objects.psd

Screen Shot 2017-03-16 at 16.22.33.png

Screen Shot 2017-03-16 at 16.28.32.png

Edited by barkest
1

Share this post


Link to post
Share on other sites

nice solution - I like

0

Share this post


Link to post
Share on other sites

Great solutions, thanks all

0

Share this post


Link to post
Share on other sites

Posted (edited)

@barkestHi the way i use to seperate the shadows is to create a renderworks Style. We use this to create existing and proposed shadows. We overlay a hidden line viewport of the building over an Esisting shadow viewport over the new shadow viewport. Cant show building but these are the 2 viewports and only renders the shadows and not the building.

all done in vectorworks.

Attached file has the renderworks style se the resource manager for them. HTH

Shadows off.vwx

Capture.JPG

Edited by Alan Woodwell
1

Share this post


Link to post
Share on other sites

Dang Alan. Awesome.

 

0

Share this post


Link to post
Share on other sites

Great solution Alan.  Thanks for sharing.  Excellent Post to @barkest  PS is a good place to add the layered details too like dirt, smudges, ageing etc.

0

Share this post


Link to post
Share on other sites

Thanks Alan, its nice to use the same technique to remove any objects which works really well.

0

Share this post


Link to post
Share on other sites

Messing around with the Lines and Shadow artistic render style... Is there a way to control the quality of curved things? See the shadows in the lower part of the screenshot below (OpenGL on top, Artistic RW on bottom).

 

591641ea91135_ScreenShot2017-05-12at4_13_56PM.png.34689dd5be795752bc475bf32d4ac833.png

0

Share this post


Link to post
Share on other sites
1 hour ago, Andy Broomell said:

 

Messing around with the Lines and Shadow artistic render style... Is there a way to control the quality of curved things? See the shadows in the lower part of the screenshot below (OpenGL on top, Artistic RW on bottom).

 


Not in Fast Renderworks, make a Renderworks Style and set it up the way you like but with curved geometry set to High. I don't usually need Very High for curved geometry, unless it's really close up.

 

0

Share this post


Link to post
Share on other sites

But what about a Renderworks Style that's set to Artistic?

 

591667a4731c6_ScreenShot2017-05-12at6_55_31PM.png.394f6ab92c3ad46db166582b5dbf9fa6.png

0

Share this post


Link to post
Share on other sites

Posted (edited)

Is it perhaps controlled by the general mesh quality setting in VW preferences ?

Edited by zoomer
0

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now