The Bed - Lighting and Shadows

I have returned to a previous project that was started and then left behind to explore other avenues. Mainly sketching, but now back to full drawings.

The original post for "The Bed" can be found here:1000 Hours of Drawing: The Bed - In Progress 1

In order to continue with this drawing (fill in the rest of the space) I need to figure out where the light sources are. The bed was first drawn without consideration for the rest of the room. That was the point, if you go back and read the original post. Let the drawing dictate the space. With shadows already established in the bedding and as a result, the bed is dictating the light sources for the room. Below is my way of figuring out those sources.

Observations - The Defining of Space in Drawing

I made an observation yesterday in my daybook, while I was working on the next drawing. There is a definite difference in the creation of space (on paper) between Line drawings and Rendering. The lines of an orthographic drawing define the space, interior and exterior, with a single stroke. The line divides one area of the page from another, just as a wall would do in the built world. It is a straightforward way to create the spaces that the designer is looking for.

With a rendering, however, it is more complicated. You can't create that boundary in the same way. Rendering is the illustration of how light interacts with the different components in a design. (ie. walls, windows, furniture, etc). Instead of giving a bounding line, rendering needs to fill the space with light and shadows to give it definition.