We ought at least to know the bare rules governing these two types of shadows. Find the " uphill " V.P. Draw the object, its V.P., the horizon, and the sun. Perspective is a tool to draw 3D objects in 2D without making them look flat. //-->. for objects projecting from a ceiling will be that point on the ceiling that is directly above the light. Drawing by the Author.Notice the shadow of the beer-keg on the mug. 305). The accurate depiction of shades and shadows in orthographic views is important in architectural design for various reasons. 320. Shades and Shadows Working with light, shade and shadow will dramatically help to give a drawing form and a sense of the third dimension. in the same plane with it). 311.