Instruction Manual

Chapter 21 3D compositing 951
Spot lights and shadow shading
With spot lights, enabling shadows but disabling shading can create a seemingly strange result
where the shadow is suddenly cut o because it has exceeded the scope of the light cone.
Because the shading eect of the light cone is turned o, the shadow edge looks unnatural.
To correct such an occurrence, increase the Cone Angle in the Light Inspector.
Disable shadows
Rendering shadows can signicantly impact playback performance. You can temporarily disable
shadows to improve playback speed while working on other aspects of your project.
To disable rendering of shadows
m From the Render pop-up menu in the status bar, choose Shadows (or press Control-Option-S).
Reections
Reections overview
In the real world, all objects exhibit some degree of reectivity based on surface shine,
brightness, angle of view, and proximity to reected objects. Motion simulates this natural
eect, equipping every object with a set of parameters to create and control realistic-looking
reections. When reections are enabled for an object, all other objects in the scene are reected
but may only be visible from specic angles and distances.
Reection controls
Reections are controlled by adjusting settings in the Reection section of Properties Inspector.
Reection Parameters in the Properties Inspector
•
Reection: This checkbox enables reections based on the settings of the parameters in the
group. (When selected, the checkbox turns blue.)
•
Reectivity: This slider controls how shiny the object’s surface appears. 0% indicates no
reectivity, while 100% is perfectly reective, like a mirror.
67% resize factor