The SoVRMLPointLight node specifies a point light source at a 3D location in the local coordinate system. A point source emits light equally in all directions; that is, it is omnidirectional. SoVRMLPointLights are specified in their local coordinate system and are affected by parent transformations.

Note: SoVRMLPointLights only illuminate objects in their enclosing parent group (similar to Directional lights). This is a slight deviation from the behavior described by the VRML97 specification.

<font color="#0000FF">NOTE:</font> This class does not exist in Open Inventor 10.0 and later.

VRML97 SPECIFICATION

This section describes the expected behavior of the node in a conforming VRML97 browser application. In some cases, the application is responsible for implementing portions of the expected behavior. Open Inventor viewer classes and IVF classes implement some of the application behaviors.

This section may reference portions of the VRML97 specification that are not present in this help file. The complete VRML97 spec is available at http://www.web3d.org.

The SoVRMLPointLight node specifies a point light source at a 3D location in the local coordinate system. A point source emits light equally in all directions; that is, it is omnidirectional. SoVRMLPointLights are specified in their local coordinate system and are affected by parent transformations.

See "Concepts - Light Sources" for a detailed description of the ambientIntensity , color , and intensity fields.

A SoVRMLPointLight may illuminate geometry within radius (>= 0.0) meters of its location. Both radius and location are affected by parent transformations (scale radius and transform location).

A SoVRMLPointLight's illumination falls off with distance as specified by three attenuation coefficients. The attenuation factor is 1/( attenuation [0] + attenuation [1]*r + attenuation [2]*r^2) , where r is the distance of the light to the surface being illuminated. The default is no attenuation. An attenuation value of 0 0 0 is identical to 1 0 0 . Attenuation values must be >= 0.0. Renderers that do not support a full attenuation model may approximate as necessary. See "Concepts - Lighting Model" for a detailed description of VRML's lighting equations.

FILE FORMAT/DEFAULT

VRMLPointLight {

ambientIntensity	0
attenuation	1 0 0
color	1 1 1
intensity	1
location	0 0 0
on	true
radius	100
metadata	NULL

}

ACTION BEHAVIOR

SoGLRenderAction Sets: SoGLLightIdElement

EVENTS

eventIn

SoSFFloat	set_ambientIntensity
SoSFVec3f	set_attenuation
SoSFColor	set_color
SoSFFloat	set_intensity
SoSFVec3f	set_location
SoSFBool	set_on
SoSFFloat	set_radius (Note: Not implemented)
SoSFNode	set_metadata

eventOut

SoSFFloat	ambientIntensity_changed
SoSFVec3f	attenuation_changed
SoSFColor	color_changed
SoSFFloat	intensity_changed
SoSFVec3f	location_changed
SoSFBool	on_changed
SoSFFloat	radius_changed (Note: Not implemented)
SoSFNode	metadata_changed

Obsoletesince Open Inventor 9500 The VRML API is no longer supported. See section http://oivdoc95.vsg3d.com/content/compatibility-notes-4#Deprecation of the Reference Manual.

Reference