We saw at the TIP 109 How to draw Cast Shadow using PARALLEL source light (such as the sun). Today let’s see more about DIVERGING source light (such as 1 or multiple projectors).
You are free to use any of these 2 techniques.
To illustrate both techniques, let’s consider the volumes in the videos to be something you could hold in your hand. Basically, I consider that the “Parallel source light” would come from a (huge) wide source of light such as the sun. The “Diverging source light” would fit better for small lights such as projectors.
Note that it’s all about scale. If you draw an entire city with high buildings, you may want to use the Diverging source light. It may give a more “dramatic” result.
At the end it’s up to you to choose the graphic impact you want to give to your sketch.
Cast shadow with 1 projector.
Cast shadow with 2 projectors
Cast shadow with a closer projector to the volume.
I recommend you guys to try to draw a few and test a minimum of 5 different source of lights. Take a pen and let me know how it goes in the comments below !
Note: Do not train using any ruler to trace the straight lines. It’s a good habit to take from the start. If needed, you can click here to get a tutorial on how to draw straight lines without ruler.