NAME¶

SoEnvironment — global environment node

INHERITS FROM¶

SoBase > SoFieldContainer > SoNode > SoEnvironment

SYNOPSIS¶

#include <Inventor/nodes/SoEnvironment.h>
enum FogType {

SoEnvironment::NONE No fog
SoEnvironment::HAZE Linear increase in opacity with distance
SoEnvironment::FOG Exponential increase in opacity
SoEnvironment::SMOKE Exponential squared increase in opacity
}
Fields from class SoEnvironment:

SoSFFloat ambientIntensity
SoSFColor ambientColor
SoSFVec3f attenuation
SoSFEnum fogType
SoSFColor fogColor
SoSFFloat fogVisibility
Methods from class SoEnvironment:

SoEnvironment()
static SoType getClassTypeId()
Methods from class SoNode:

void setOverride(SbBool state)
SbBool isOverride() const
SoNode * copy(SbBool copyConnections = FALSE) const
virtual SbBool affectsState() const
static SoNode * getByName(const SbName &name)
static int getByName(const SbName &name, SoNodeList &list)
Methods from class SoFieldContainer:

void setToDefaults()
SbBool hasDefaultValues() const
SbBool fieldsAreEqual(const SoFieldContainer *fc) const
void copyFieldValues(const SoFieldContainer *fc, SbBool copyConnections = FALSE)
SbBool set(const char *fieldDataString)
void get(SbString &fieldDataString)
virtual int getFields(SoFieldList &resultList) const
virtual SoField * getField(const SbName &fieldName) const
SbBool getFieldName(const SoField *field, SbName &fieldName) const
SbBool isNotifyEnabled() const
SbBool enableNotify(SbBool flag)
Methods from class SoBase:

void ref()
void unref() const
void unrefNoDelete() const
void touch()
virtual SoType getTypeId() const
SbBool isOfType(SoType type) const
virtual void setName(const SbName &name)
virtual SbName getName() const

DESCRIPTION¶

This node describes global environmental attributes such as ambient lighting, light attenuation, and fog. Ambient lighting is the amount of extra light impinging on each surface point when the lighting model is Phong (see SoLightModel). Light attenuation affects all subsequent lights in a scene (see SoLight). It is a quadratic function of distance from a light source to a surface point. The three coefficients are specified in the attenuation field. Attenuation works only for light sources with a fixed location, such as point and spot lights. Fog has one of four types, each of which blends each surface point with the specified fog color. Each type interprets the visibility field to be the distance at which fog totally obscures objects. A visibility value of 0 (the default) causes the SoEnvironment node to set up fog so that the visibility is the distance to the far clipping plane of the current camera. Note that this node has effect only during rendering, and that it does not inherit field values from other SoEnvironment nodes.

FIELDS¶

SoSFFloat ambientIntensity
SoSFColor ambientColor
Intensity and RGB color of ambient lighting (for Phong lighting).

SoSFVec3f attenuation
Squared, linear, and constant light attenuation coefficients (in that order) with respect to distance of light from surface (for Phong lighting).

SoSFEnum fogType
SoSFColor fogColor
SoSFFloat fogVisibility
Type of fog, color of fog, and visibility distance, which is the distance at which fog totally obscures objects.

METHODS¶

SoEnvironment()
Creates an environment node with default settings.

static SoType getClassTypeId()
Returns type identifier for this class.

ACTION BEHAVIOR¶

SoGLRenderAction
Sets the current environment parameters to those specified with this node. Successive geometries will be rendered using this environment.

FILE FORMAT/DEFAULTS¶

Environment {


ambientIntensity	0.2
ambientColor	1 1 1
attenuation	0 0 1
fogType	NONE
fogColor	1 1 1
fogVisibility	0


}

SEE ALSO¶

SoLight, SoLightModel