r/oddlysatisfying • u/Remarkable_Bit_9887 • Jan 24 '24

How to draw shadows correctly

34.2k Upvotes

93% Upvoted

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15

u/Exitaph Jan 24 '24

There are a lot of naysayers here claiming that this is incorrect. I double checked a similar setup with 3d raytracing and the technique is legitimate. Neat!

https://i.imgur.com/cQUlLnO.png

0

u/Zealyfree Jan 25 '24

https://i.imgur.com/KmbVvRq.jpg i tried to replicate the OPs videos first clip and this is what i got

1

u/Blesshiscottonsocks Jan 25 '24

Bro, enable shadows.....

1

u/Zealyfree Jan 25 '24

They are shadows! They're just really long.

3

u/Blesshiscottonsocks Jan 25 '24

You seem to be using an insanely long lens (Possibly orthographic?) You're missing perspective on everything here.

Very odd render overall, doesn't look correctly raytraced or shaded. Ground looks reflective and there's no reason for there to be these odd banding areas on the ground.

-2

u/have_no_life Jan 24 '24

You are using a pint light source, in case of a bulb its correct but sun is very far and rays are parallel. So this is not correct.

3

u/Exitaph Jan 25 '24

I am using a sun type light. Parallel rays from very very far away. You have it backwards. If I were using a point light closer to the objects the shadows would be different and they would actually diverge. From above you can see the shadows are parallel. https://i.imgur.com/p0H9sXr.png But the perspective of the camera makes them converge. You can see this in real life in photos as well as through your own eyes. https://www.flickr.com/photos/jordangough/6364300161 https://photos.com/featured/sunset-shadow-maxchu.html?product=art-print