Table 6.143—DRM_Infinite_Light
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Property |
Description |
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Superclass |
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Class |
· <DRM Infinite Light> |
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Subclass |
· none |
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Definition |
An object of this DRM class specifies a type of <DRM Light Source> that is considered to be located infinitely far away. It illuminates uniformly along a particular direction. Color and control are inherited from <DRM Light Source>. An <DRM Infinite Light> has no bound of influence and so affects all components of any <DRM Aggregate Geometry> that references it. |
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Example(s) |
· An <DRM Environment Root> has a <DRM Spatial Index Related Geometry> component, representing the terrain in its transmittal. The <DRM Spatial Index Related Geometry> has a <DRM Infinite Light> component, representing the sun. |
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Inherited field elements |
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Field elements |
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Associated to (one-way) (inherited) |
· none |
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Associated to (one-way) |
· none |
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Associated by (one-way) (inherited) |
· none |
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Associated by (one-way) |
· none |
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Associated with (two-way) (inherited) |
· none |
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Associated with (two-way) |
· none |
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Composed of (two-way) (inherited) |
· one <DRM Ambient Colour · one <DRM Diffuse Colour> · zero or one <DRM Light Source Control Link> · one <DRM Specular Colour> |
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Composed of (two-way) |
· one <DRM Reference Vector>5 |
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Composed of (two-way metadata) (inherited) |
· none |
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Composed of (two-way metadata) |
· none |
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Component of (two-way) (inherited) |
· one or more <DRM Aggregate Geometry> |
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Component of (two-way) |
· none |
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Constraints |
· none |
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Notes |
1 Flag to allow lights to limit their scope to only affecting their children. If apply_to_children is FALSE, the light is assumed to apply globally. 2 Flag to reset the current cumulative definition of local <DRM Light Source>s If override_positional_lights is TRUE, all <DRM Positional Light>s in the current scope are cleared. 3 Flag to reset the current cumulative definition of <DRM Infinite Light>s. If override_infinite_lights is TRUE, all <DRM Infinite Light>s in the current scope are cleared. 4 This is the default/active state of the light indicating whether it is on (TRUE) or off.. 5 Direction of light source illumination of type LIGHT_DIRECTION. |
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Class diagram |