the K1te thread made me think...
viewtopic.php?f=4&t=6359


this is coming up in all 3D related stuff, getting the directions of light and shadow right

here is a trick how you can probably deal with this problem
you make a little red point, and then offset the shadow layer along the vanishing points of the lightrays


is there a better way of doing it ?

i think one problem is, that the offset dialog, only accepts pixel values and no angles
and another thing that bugs me, is that everytime you hit okay on the offset dialog and then re open it, the values are reset to zero

Interesting topic esper, but you would also need to consider the light source coming from behind or in front of the image.

yes i thought about that too, but i dont know how to show that really, and what is the effect

i guess the higher the lightsource the deeper (broader) the light and shadow, right ?

It also depends on the distance between the object and the surface where the shadow is cast. Oh and using colored shadow instead of the usual transparent black is a plus, IIRC, the color of a shadow is the complementary color of the lightsource (it surely is more complex in nature but it's one of the basic principles it seems) besides the color of the object plays its role in the shadow color.