Cast Shadow | Parallel source of light from the Sun

To make your sketch pop out from the background, it’s essential to add a Cast shadow.
The “cast shadow” projects the shadow of an object on a surface (basically the ground surface).

I basically use 2 methods at drawing the cast shadow:

  • the Parallel source of light (Example: The sun)
  • the Diverging source of light (Example: A torch light)

Today let’s see first the most simple one, the cast shadow with the Parallel source light.
Follow the tutorial step-by-step, and you will realise how easy it is!

The cast shado will give more depth to your sketches. And as you will see, in Product design sketching, we will use hatching to draw them. It allows you to draw with efficiency.

Your aim is not about drawing a realistic drawing. But a sketch for anyone to undestand fast and clearly.

cast shadow-design sketching - source of light

Drawing cast Shadow from the sun

cast shadow-design sketchingcast shadow-design sketching a

See you for the next tip of the day about the:
How to draw a Cast shadow using the DIVERGING source of light.

Testimonial from John:

“When I’ve read your article, I was purely amazed at how motivational it actually is. It covers the real situation in life and how to achieve your vision and goal. I would really love to read your articles more in the future and get more involved in your future design courses.”

About The Author


Hello! I am a Product Designer from France. If the sketching methods I’ve acquired aid me in my life and in my industrial design career, I believe that they can also help you reach your design goal as a student or professional. My aim is to help you all along with your design projects and journey! Leave a comment in the blog or send me an email at : ) Chou-Tac


  • Paulina

    Reply Reply August 23, 2022

    Hey. How to determine in which scene I should be drawing a parallel source of light or a diverging one? In many cases I’ve seen how people where projecting the sun on the horizon line and drawing shadow with diverging method. This type of casted shade from the sun also occurs in sunset scenes, when the sun is in the middle of the scene. Can anybody answer that?

  • Irene

    Reply Reply March 13, 2015

    Sometimes, I find it difficult to locate the ground plane.

    • Chou-Tac Chung

      Reply Reply March 16, 2015

      Hello Irene, at start you can help visualize the ground plane by tracing a quick grid like I did at the beginning of the video. Remember to trace it with a light pen pressure – or your drawing will be over crowded of lines.

      • Irene

        Reply Reply March 25, 2015

        How to find the direction lines (B)?

  • Jian

    Reply Reply March 12, 2015

    really useful tutorial, espcially for shadow of exterior related object :). Thank you so much.

  • DCA

    Reply Reply March 12, 2015

    many good tips. thank you.

  • erick beebe

    Reply Reply March 12, 2015

    I like it. Very nice to see this. 🙂

Leave A Response

* Denotes Required Field