topic Re: 3d rendering avoiding shadows in spot light and distance lights in AutoCAD Forum

3d rendering avoiding shadows in spot light and distance lights

coolkris — Tue, 19 May 2020 12:23:47 GMT

Dear all,

Please find attached image, I want to avoid shadows of point light and distance light.

Thanks

Krish

Re: 3d rendering avoiding shadows in spot light and distance lights

Alfred.NESWADBA — Wed, 20 May 2020 06:05:12 GMT

Hi,

>> I want to avoid shadows of point light and distance light

Which version of AutoCAD?

For newer AutoCAD versions you can't avoid shadows (I guess because of realism)

- alfred -

PS: no image attached

Re: 3d rendering avoiding shadows in spot light and distance lights

coolkris — Wed, 20 May 2020 06:25:40 GMT

Hi,

thanks for reply still the shadow falls on image background from distance light i beleive. How we can avoid that.

Krish

Re: 3d rendering avoiding shadows in spot light and distance lights

Alfred.NESWADBA — Wed, 20 May 2020 06:33:33 GMT

Hi,

>> falls on image background from distance light

What type of geometry is your background? If it's really just a background image and no geometry, no shadow should show up there.

Can you please run command _ETRANSMIT (to pack all together, drawing + images) and upload the file here ... that gives us the option to look into it. Please also let us know the version of AutoCAD you are using.

- alfred -

Re: 3d rendering avoiding shadows in spot light and distance lights

coolkris — Thu, 21 May 2020 02:47:10 GMT

good morning,

Please find attached etransmit and also rendered walkthrough. Shadow is "really" disturbing quality.

I use Autocad 2017.

Thanks

Krish

Re: 3d rendering avoiding shadows in spot light and distance lights

Alfred.NESWADBA — Thu, 21 May 2020 08:35:05 GMT

Hi,

you have seen these 2 dialogs?

Both are not good to have with your scene and especially the heavy number of lights you have.

Where does the dwg-file come from?

Have you set the lights or were they already defined when you started with AutoCAD and this file?

If you don't want to have a shadow for the background, then please don't use geometry for your background. Geometry objects receives shadows. Instead use the environment option to show a background as shown here:

- alfred -

Re: 3d rendering avoiding shadows in spot light and distance lights

coolkris — Thu, 21 May 2020 10:05:21 GMT

thanks a lot, this was the output from tekla model, how to place the image exactly in the x,y,z co-ordinates. From the background option that will only stretch or tile etc.

Re: 3d rendering avoiding shadows in spot light and distance lights

Alfred.NESWADBA — Thu, 21 May 2020 10:39:04 GMT

Hi,

placing a background like an image is not possible (not with AutoCAD afaik), but you can edit the image so it fits to the space/to fill the background 😉

- alfred -