CPC Rectangular
This object is similar to the CPC (see " Compound Parabolic Concentrator (CPC) " ), but with rectangular rather than radial symmetry. See that object description for detailed equations defining the CPC.
The CPC Rectangular is defined by the following parameters:
| Parameter # | Description | Face Name | Face # |
| 1 | The x direction semi-aperture at z = 0. | Side Faces | 0 |
| 2 | The maximum x-direction acceptance angle in degrees. | Side Faces | 0 |
| 3 | The y direction semi-aperture at z = 0. | Side Faces | 0 |
| 4 | The maximum y-direction acceptance angle in degrees. | Side Faces | 0 |
| 5 | The length along the local Z axis. | Side Faces | 0 |
| 6 | The "Is Volume?" flag. | Side Faces | 0 |
| 7 | The volume index of refraction. | Side Faces | 0 |
The acceptance angles must be between 0.0 and 89.0 degrees, inclusive.
Face Numbers: Front face Face 1, rear face Face 2, outer faces Face 0.
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