For example, if you want to change the color of the pear from green to brown, all you need to do is configure the brush to change RGB data - not depth - and choose brown as your color, and then you can easily paint over the green pear to make it brown ZBrush maintains all the modeling and, as a result, all the shading and highlights. More impressively, you can edit any of these attributes simply by painting over the image. For example, when you paint an object (such as the pear shown in our sample screen) you can concentrate on shape and dimensions ZBrush automatically applies the base color, the mottled texture, and the highlights and the shadows based on the attributes you’ve chosen. This hybrid approach to image creation is really very powerful. When compared to conventional art media, a ZBrush scene behaves more like a bas relief than either a 2D painting or a 3D sculpture.Ĭreating realistically modeled objects in ZBrush, such as the pear shown here, is as simple as laying on more “paint.” You can quickly change the atmosphere of a composition by altering the lighting set up. A ZBrush scene contains both depth and a fixed picture plane. (Pixol data comprises the standard 24 bits of color data used by most image-editing programs plus 32 bits of data to record depth and 8 bits to describe surface materials.) The result is a scene that exists in what can only be described as two-and-a-half dimensions. Instead ZBrush represents volumes in space with Pixols - a term coined by the company for pixels that also include an indication of depth and surface. For example, ZBrush does not expect users to edit wireframe models, understand nurbs, or navigate virtual worlds. The underlying technology in ZBrush is similar to that found in 3D-modeling and -rendering programs such as 3D Studio Max, Caligari trueSpace, and Strata 3Dpro, but ZBrush is a far cry from a traditional 3D-authoring tool.
ZBrush’s unusual interface makes it a somewhat difficult tool to master, but its approach will pay off for buyers who stick with it. With ZBrush 1.03, its new graphics software for Windows and Mac platforms, Pixologic hopes to change all this by providing interactive 3D painting tools. Professional artists and illustrators know first hand that it’s difficult to create the illusion of the third dimension, regardless of whether they are working with old-fashioned bristle brushes or a computerized paint program.
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