Light: The Most Overlooked Feature Of 3d

Light: The Most Overlooked Feature Of 3d

Light: The Most Overlooked Feature Of 3d

You can change a golf ball to a tennis ball then to a baseball or a basketball and finally to an earth ball or even to the actual earth. No matter how exquisite your models or textures are however, without light the 3D project is as visually appealing as radio. And even with light, if it's not done effectively, the viewer is left with a flat and uninteresting vision. Virtual 3D light, like everything else in digital space, is virtual.

It is a set of algorithms that attempt to imitate light as it occurs in the real world. And even though there have been tremendous strides in the way 3D applications handle lighting instruments (the objects that actually produce the light), and the way those light particles (or waves) behave within digital space, there is still a tremendous amount of artistry and interpretation needed to produce effectively lit scenes. Lighting is one of the most powerful, yet most often overlooked areas of 3D.

Some 3D is illustrative in nature. Some 3D's purpose is to create beautiful still figures. Other 3D is narrative in purpose like animation. While the same 3D application is used to create both stills and animations, ultimately, the goal and media of the two are different. Animation is bringing the geometry of models to life; giving them life, a motion personality. Animation is a complex process, and even the simplest ideas of a bouncing ball require careful study of the world around us and the physics of weight. To top it all off, the most believable animation is the one that transcends the heavy technical requirements of animation to a level of organic movement.

You will usually find that about one-fourth of your time is spent creating the models, textures, and lighting setups, and the rest is spent animating. Once a scene is modeled, textured, lit, and sometimes animated, the computer must paint the geometry, color, and light we have given it. This rendering is produced by the computer and is usually our final still or animation. There are many different ways to render, including everything from photorealistic to cartoon shading.

Keep in mind as you work that complex scenes take large amounts of time to render, and even when your work is done, the computer has to interpret all of your instructions, and often even the fastest computers will take a long time to do this. Finishing up your lighting and clicking the "render" button as your client walks in the door is a very bad idea. (It is my experience that clients are usually unimpressed by a black screen.)

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