Shading defines to describe depth perception in three dimensioning models by different levels of darkness. Shading is applied in drawing for describes levels of darkness on paper by adding media heavy densely shade for darker regions, and less densely for lighter regions.

There are different techniques of shading with cross hatching where perpendicular lines of changing closeness are drawn in a grid pattern to shade an object. The closer the lines are combining, the darker the area appears. Similarly, the farther apart the lines are, the lighter the area shows.

The image shown in figure 2 has the faces of the box rendered, but all in the similar color. Edge lines have been rendered here as well which creates the image easier to view.

The image shown in figure 3 is the same model rendered without edge lines. It is complicated to advise where one face of the box ends and the next starts.

The image shown in figure 4 has shading enabled which makes the image extra realistic and makes it easier to view which face is which.

Shading Techniques

In computer graphics, shading submits to the procedure of changing the color of an object in the 3D view, a photorealistic effect to be based on its angle to lights and its distance from lights. Shading is performed through the rendering procedure by a program called a ‘Shader’. Flat shading and Smooth shading are the two major techniques using in Computer graphics.