Help with how light reflects on basic forms

[Loveart]

Hey guys,

Someone here have a links or that can help me understand how the light from some angles reflects on the basic forms?

It would really help me as I am trying to understand how to shade a face from different angles.

[Dizon]

There is what we call formlight and highlight.

Light travels in straight lines. Once it hits an object it scatters itself around the form, and then it bounces towards us, but there is a point where it hits as a tangent along the form. That point is where the shadow starts. The portion of the object that is in light is formlight Highlight is the portion on the object where light is most intense, but the position of the highlight is highly depended on our viewing angle. If you move your position, the highlight will follow you. Just like when you're walking along the beach, and you notice the intense sunlight reflected from the water following you.

I recommend Anthony Ryder's book on figure drawing, and Ted Seth Jacobs' "Light for the Artist", which discuss these principles further. The latter is hard to find though.

Hope that helps.

[Seedling]

Find yourself some white objects that are basic shapes: a box, a sphere, etc. Point a lamp at them, and draw.