Function available in CINEMA 4D Prime, Visualize, Broadcast, Studio & BodyPaint 3D
Our shadow beneath the car is still too bright. There are two ways we can solve this problem.
- Light sources can be used solely as a Shadow Caster. This option can be enabled in the light’s Details tab. Enabling this option will suppress all shading effects on object surfaces but will maintain all cast shadows. In our example, an additional light source could be positioned far above the car to generate a shadow directly beneath the car.
- A more elegant and realistic-looking solution would be to use an Ambient Occlusion shader in the Floor object’s Diffusion channel. The Ambient Occlusion shader is located in the Diffuse channel’s Texture menu under Effects. As you can see in the image below, this shader contains a gradient and numerous parameters with which the shadows can be fine-tuned. By applying an Ambient Occlusion shader to the Floor object it can be darkened in areas in which objects lie in close approximation.
The image below shows clearly the difference Ambient Occlusion makes - at the top is the original scene, at bottom is the scene with the modified Floor object. The regions directly beneath the car are now darker and the car no longer "floats" above the ground.
The same effect can be applied to all scene objects by enabling Ambient Occlusion in the Render Settings menu. This may overwrite individual Ambient Occlusion settings.
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