D3DLIGHTTYPE enumeration

Defines the light type.

Syntax

typedef enum D3DLIGHTTYPE { 
  D3DLIGHT_POINT        = 1,
  D3DLIGHT_SPOT         = 2,
  D3DLIGHT_DIRECTIONAL  = 3,
  D3DLIGHT_FORCE_DWORD  = 0x7fffffff
} D3DLIGHTTYPE, *LPD3DLIGHTTYPE;

Constants

D3DLIGHT_POINT

Light is a point source. The light has a position in space and radiates light in all directions.

D3DLIGHT_SPOT

Light is a spotlight source. This light is like a point light, except that the illumination is limited to a cone. This light type has a direction and several other parameters that determine the shape of the cone it produces. For information about these parameters, see the D3DLIGHT9 structure.

D3DLIGHT_DIRECTIONAL

Light is a directional light source. This is equivalent to using a point light source at an infinite distance.

D3DLIGHT_FORCE_DWORD

Forces this enumeration to compile to 32 bits in size. Without this value, some compilers would allow this enumeration to compile to a size other than 32 bits. This value is not used.

Remarks

Directional lights are slightly faster than point light sources, but point lights look a little better. Spotlights offer interesting visual effects but are computationally time-consuming.

Requirements

See also

Direct3D Enumerations

D3DLIGHT9