Rendering ray-traced 3D compositions out of After Effects is taxing on your computer, as a result renders generally take a long time, but After Effects does take advantage of GPU processing from a select number of approved graphics cards. These parameters, as well as the layers themselves, can all be animated. Ray-traced 3D compositions in After Effects allow you to generate and place multiple lights, define how shadows are cast and set material options for 3D layers. Currently, After Effects is not able generate volumetric platonic solids or other modeled solids for its ray-traced 3D renders, but it doesn’t need to - those capabilities are better suited to true 3D animation packages. A two-dimensional, non-extruded layer, in 3D space has zero depth on the z plane, making it disappear when rotated 90 degrees on the x or y axis. When extruded layers are rotated there are faceted sides viewable at all angles. Extruded layers have z depth to them, meaning they are three-dimensional, not two-dimensional elements in 3D space. Ray-traced 3D, as it is known in After Effects, allows you to extrude text and paths.
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This is why ray tracing is best suited to video applications and processes that can allow for rendering time, but is not suited to uses that require real time rendering, such as video games.Īfter Effects is able to render 3D objects, light and shadows through Ray TracingĪdobe After Effects performs ray tracing when the software is setup to do so. When multiple animated objects are built into a scene, with multiple light sources, as well as a virtual camera, the rendering process can take an extensive amount of time. The disadvantage of ray tracing is that it takes a great deal of computing power to render an image. The resultant image is an accurate portrayal of how the scene may appear in the real world, contingent of course that the scene is setup accurately. This includes occlusion for shadows, reflections, refractions and bounced light. The image is rendered by computing, or tracing, the way the rays of light interact with the scene. It works by simulating rays of light, projected from a virtual light source, onto the virtual scene. Ray tracing is a computational method of rendering an image that is composed of virtual three-dimensional objects. After Effects is able to render true 3D objects, light and shadows through a process known as ray tracing.
A little used function of After Effects is its ability to create and animate true 3D objects, objects that possess height, width and depth. The resulting animation gives the illusion of depth because of parallaxing and a consistent perspective throughout the composition. 2.5D is the use of flat, two-dimensional elements in three-dimensional space. Many After Effects users are adept at using the software package’s ability to animate elements in 3D space, but more often than not, it’s what is referred to as 2.5D.
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