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Parameters common to most types follow:
Intensity Tab
- Color: Selecting RGB will assign the color picker color to the emitter output. Alternately, select Temperature to specify the emitter output in degrees kelvin.
- Luminance: The luminance of the source can be specified via a number of industry-standard schemes, including by input power and efficacy, output lumens, lux, etc. The intensity of light is delivered into the scene is affected by not only by the luminance, but also by the color and the emitter size (see below).
Shadows Tab
Maxwell emitters always cast shadows, so this option is disabled when editing a Maxwell light type.
Parameters Tab
- Invisible Geometry: Enabling this option will cause the emitter geometry to be invisible to the camera in the Maxwell scene, though the emitter will still illuminate the objects around it.
- Quality: [1-Lowest - 5 Highest] Controls the number of faces (polygons) making up the emitter object. The default value (2) should work in almost all cases. Increasing this value may eliminate lighting artifacts, but will also increase render time.
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The base of the fixture, as defined by the IES / EULUMDAT file (e.g., the negative-Z axis), will always point toward the light’s COI.
Intensity Tab
Open: Select the IES or LDT file. A 2D representation of the distribution pattern is displayed below the filepath field
Delete: Remove link to the file.Intensity: Override the intensity of the light as defined in the IES file.
Info Only the default, 1.0, represents the fixture's intensity accurately.
Parameters Tab
- Diameter: Sets the diameter of the emitter sphere. The default size is recommended. Geodesic spheres are used for an even of distribution and maximum efficiency.
- Spin: Controls the rotation of the fixture about the axis defined by the light origin and COI. The origin of rotation (0 degrees) always points ‘down’ to the ground plane (XY plane).
- Length: Controls the length of the IES distribution pattern widget in the 3D modeling space.
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Projector lights can be used to simulate light beams, video projectors, and the like. For full details on this feature, please see the Maxwell documentation: Image projection
Intensity Tab
- Open: Select the image file to be projected. Both standard and HDRI formats are supported.
- Delete: Remove link to the file.
Intensity: Light intensity.
Parameters Tab
- Angle: Field-of-view of the projection
- Blur: Defocus the image. Values greater than 100% are permissible, and may be necessary to achieve sufficient blur when the projector and projection surface are at a great distance.
- Spin: Controls the rotation of the fixture about the axis defined by the light origin and COI. Zero degrees results in the image appearing "upright" relative to an observer on the ground plane.
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