Point, spot, directional and area lighting. More...
Public Member Functions | |
| virtual Light_type | get_type () const =0 |
| Returns the light type. More... |
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| virtual void | set_type (Light_type type)=0 |
| Sets the light type. More... |
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| virtual Light_area_shape | get_area_shape () const =0 |
| Returns the area light shape. More... |
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| virtual void | set_area_shape (Light_area_shape light_area_shape)=0 |
| Sets the area light shape. More... |
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| virtual Float64 | get_area_radius () const =0 |
| Returns the radius of the area for area lights. More... |
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| virtual void | set_area_radius (Float64 radius)=0 |
| Sets the radius of the area for area lights. More... |
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| virtual Float64 | get_area_size_x () const =0 |
| Returns the size of the area in x direction for area lights. More... |
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| virtual void | set_area_size_x (Float64 size_x)=0 |
| Sets the size of the area in x direction for area lights. More... |
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| virtual Float64 | get_area_size_y () const =0 |
| Returns the size of the area in y direction for area lights. More... |
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| virtual void | set_area_size_y (Float64 size_y)=0 |
| Sets the size of the area in y direction for area light types. More... |
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Additional Inherited Members | |
 Public Types inherited from mi::base::Interface_declare< 0xc9a437cf, 0x6d47, 0x4666, 0x9c, 0xf6, 0xa4, 0x3f, 0x50, 0xe8, 0x0b, 0x90, neuraylib::IScene_element >
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| typedef Interface_declare< id1, id2, id3, id4, id5, id6, id7, id8, id9, id10, id11, neuraylib::IScene_element > |
Self |
| Own type. More... |
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| typedef Uuid_t< id1, id2, id3, id4, id5, id6, id7, id8, id9, id10, id11 > |
IID |
| Declares the interface ID (IID) of this interface. More... |
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Static Public Member Functions inherited from mi::base::Interface_declare< 0xc9a437cf, 0x6d47, 0x4666, 0x9c, 0xf6, 0xa4, 0x3f, 0x50, 0xe8, 0x0b, 0x90, neuraylib::IScene_element >
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| static bool | compare_iid (const Uuid &iid) |
Compares the interface ID iid against the interface ID of this interface and of its ancestors. More... |
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Point, spot, directional and area lighting.
All lights are positioned at the origin of the local light space and point down the negative z -axis, like the camera. This differs from some traditional scene description formats, in which a light can have an origin, a direction, and possibly other orientation vectors. Instead, Iray uses transformations to express these properties.
Spot lights are modeled by using the spot_edf distribution function on a point light.
For directional lights, the (transformed) position is irrelevant. The traditional use of a directional light is as an approximation of the rays of the sun, which is at such a great distance to the earth that at human scale the light rays are effectively parallel.
In addition, Iray provides the ability to specify an emission distribution function in a material. In this way, any object can be a source of light emission, but may also have reflective and transmissive properties as well.
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pure virtual |
Returns the radius of the area for area lights.
This value is only meaningful for lights of type mi::neuraylib::AREA_DISC, mi::neuraylib::AREA_SPHERE, and mi::neuraylib::AREA_CYLINDER.
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pure virtual |
Returns the area light shape.
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pure virtual |
Returns the size of the area in x direction for area lights.
This value is only meaningful for lights of type mi::neuraylib::AREA_RECTANGLE and mi::neuraylib::AREA_CYLINDER. For cylindrical area lights, this value is half of the height of the cylinder.
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pure virtual |
Returns the size of the area in y direction for area lights.
This value is only meaningful for lights of type mi::neuraylib::AREA_RECTANGLE.
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pure virtual |
Returns the light type.
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pure virtual |
Sets the radius of the area for area lights.
This value is only meaningful for lights of type mi::neuraylib::AREA_DISC, mi::neuraylib::AREA_SPHERE, and mi::neuraylib::AREA_CYLINDER.
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pure virtual |
Sets the area light shape.
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pure virtual |
Sets the size of the area in x direction for area lights.
This value is only meaningful for lights of type mi::neuraylib::AREA_RECTANGLE and mi::neuraylib::AREA_CYLINDER. For cylindrical area lights, this value is half of the height of the cylinder.
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pure virtual |
Sets the size of the area in y direction for area light types.
This value is only meaningful for lights of type mi::neuraylib::AREA_RECTANGLE.
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pure virtual |
Sets the light type.
