Why can't I see the shadow of the sphere on the ground?

I have this PG:

image

Rays can see the sphere, shadows are enabled, so why don’t I see sphere shadow on ground?

Does it exist a better method to check if a point on ground is in shadow or not?

I can see the shadow in your PG example.

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Not sure why, but this is the scene you have shared on my devices (tested on edge, chrome and android-chrome)

This is funny, it works for me too, on a different PC!

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so now it is very interesting to know what OS and browser you were using where it didn’t work

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This morning it works also on the previous PC. Probably my multiple tests and experiments messed up chrome, and a fresh start fixed the issue.

Now, the (almost) working version:

The script calculates how long a tile is in shadow along the whole loop, but it is extremely slow!
Can I use any native method to know which points of the ground are hit by shadow at a specific moment?

Could you share what you are trying to achieve ?

I opened a specific thread:

Current status:

It works, but considering that I should do the calculation for 365 turns of the sphere (which represents the sun), it is very very slow.

Why not using Babylon Shadow Generator ?

because I need to examine the shadow point by point, to count how long an area stays in shadow and how long in light.

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