Extensible 3D (X3D)
Part 1: Architecture and base components

Annex E

(normative)

Immersive profile

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cube E.1 General

This annex defines the X3D components which comprise the immersive profile. This includes not only the nodes which shall be supported but also which fields in the supported nodes may be ignored.

This profile  is targeted towards:

cube E.2 Topics

Table E.1 provides links to the major topics in this annex.

Table E.1 — Topics

cube E.3 Component support

Table E.2 lists the components and their levels which shall be supported in the Immersive profile. Tables E.2 and E.3 describe limitations on required support for nodes and fields contained within these components.

Table E.2 — Components and levels

Component Level Reference
Core 2 7.5 Support levels
Time 1 8.5 Support levels
Networking 3 9.5 Support levels
Grouping 2 10.5 Support levels
Rendering 3 11.5 Support levels
Shape 2 12.5 Support levels
Geometry3D 4 13.4 Support levels
Geometry2D 1 14.4 Support levels
Text 1 15.5 Support levels
Sound 1 16.5 Support levels
Lighting 2 17.5 Support levels
Texturing 3 18.5 Support levels
Interpolation 2 19.5 Support levels
Pointing device sensor 1 20.5 Support levels
Key device sensor 2 21.5 Support levels
Environmental sensor 2 22.5 Support levels
Navigation 2 23.4 Support levels
Environmental effects 2 24.5 Support levels
Scripting 1 29.5 Support levels
Event utilities 1 30.5 Support levels

cube E.4 Conformance criteria

Conformance to this profile shall include conformance criteria defined by the specifications for those components and levels listed in Table E.2.

In Table E.2 and Table E.3, the first column defines the item for which conformance is being defined. In some cases, general limits are defined but are later overridden in specific cases by more restrictive limits. The second column defines the requirements for a X3D file conforming to the Immersive profile; if a X3D file contains any items that exceed these limits, it may not be possible for a X3D browser conforming to the Immersive profile to successfully parse that X3D file. The third column defines the minimum complexity for a X3D scene that a X3D browser conforming to the Immersive profile shall be able to present to the user. The word "ignore" in the minimum browser support column refers only to the display of the item; in particular, set_ events to ignored inputOutput fields shall still generate corresponding _changed events.

cube E.5 Node set

Table E.3 lists the nodes which shall be supported in the Immersive profile and specifies any fields in these nodes for which this profile requires less than full support.

Table E.3 — Nodes for conforming to the Immersive profile

Item X3D File Limit Minimum Browser Support
Anchor No restrictions. Full support.
Appearance No restrictions. fillProperties not supported.
AudioClip 30 second uncompressed PCM WAV. 30 second uncompressed PCM WAV.
Background No restrictions. One skyColor, one groundColor, panorama images as per ImageTexture.
Billboard Restrictions as for all groups. Full support except as for all groups.
BooleanFilter No restrictions. Full support.
BooleanSequencer No restrictions. Full support.
BooleanToggle No restrictions. Full support.
BooleanTrigger No restrictions. Full support.
Box No restrictions. Full support.
Collision Restrictions as for all groups. Full support except as for all groups. Any navigation behaviour acceptable when collision occurs.
Color 15,000 colours. 15,000 colours.
ColorInterpolator Restrictions as for all interpolators. Full support except as for all interpolators.
ColorRGBA 15,000 colours. 15,000 colours. Alpha component optionally supported.
Cone No restrictions. Full support.
Coordinate 15,000 points. 15,000 points.
CoordinateInterpolator 15,000 coordinates per keyValue. Restrictions as for all interpolators. 15,000 coordinates per keyValue. Support as for all interpolators.
Cylinder No restrictions. Full support.
CylinderSensor No restrictions. Full support.
DirectionalLight No restrictions. Not scoped by parent Group or Transform.
ElevationGrid 16,000 heights. 16,000 heights.
Extrusion (#crossSection points) × (#spine points) ≤ 2,500. (#crossSection points) × (#spine points) ≤ 2,500.
Fog No restrictions. Full support.
FontStyle No restrictions. If the values of the text aspects character set, family, style cannot be simultaneously supported, the order of precedence shall be: 1) character set 2) family 3) style. Browser shall display all characters in Table 2 (Basic Latin) and Table 3 (Latin-1 Supplement) of ISO/IEC 10646-1 (see [I10646-1]).
Group Restrictions as for all groups. Full support except as for all groups.
ImageTexture JPEG ([JPEG]) and PNG ([I15948]) format. Restrictions as for PixelTexture. JPEG ([JPEG]) and PNG ([I15948]) format. Support as for PixelTexture.
IndexedFaceSet 10 vertices per face. 5000 faces. Less than 15,000 indices. 10 vertices per face. 5000 faces. 15,000 indices in any index field.
IndexedLineSet 15,000 total vertices. 15,000 indices in any index field. 15,000 total vertices. 15,000 indices in any index field.
IndexedTriangleFan 15,000 total vertices. 15,000 indices in any index field. 15,000 total vertices. 15,000 indices in any index field.
IndexedTriangleSet 15,000 total vertices. 15,000 indices in any index field. 15,000 total vertices. 15,000 indices in any index field.
IndexedTriangleStripSet 15,000 total vertices. 15,000 indices in any index field. 15,000 total vertices. 15,000 indices in any index field.
Inline No restrictions. Full support.
IntegerSequencer No restrictions. Full support.
IntegerTrigger No restrictions. Full support.
KeySensor No restrictions. Full support.
LineProperties No restrictions. Full support.
LineSet 15,000 total vertices. 15,000 total vertices.
LoadSensor No restrictions. Full support.
LOD Restrictions as for all groups. At least first 4 level/range combinations interpreted, and support as for all groups.
Material No restrictions. Full support.
MetadataBoolean No restrictions. Full support.
MetadataDouble No restrictions. Full support.
MetadataFloat No restrictions. Full support.
MetadataInteger No restrictions. Full support.
MetadataSet No restrictions. Full support.
MetadataString No restrictions. Full support.
MovieTexture MPEG1-Systems and MPEG1-Video formats (see [I14496-1]). MPEG1-Systems and MPEG1-Video formats (see [I14496-1]). Display one active movie texture.
MultiTexture No restrictions. At least two textures displayed per node with any number specified. Full support.
MultiTextureCoordinate 15,000 coordinates. 15,000 coordinates.
MultiTextureTransform Restrictions as for all groups. addChildren optionally supported. removeChildren optionally supported. Otherwise, full support except as for all groups.
NavigationInfo No restrictions. Full support.
Normal 15,000 normals 15,000 normals
NormalInterpolator 15,000 normals per keyValue. Restrictions as for all interpolators. 15,000 normals per keyValue. Support as for all interpolators.
OrientationInterpolator Restrictions as for all interpolators. Full support except as for all interpolators.
PixelTexture 512 width. 512 height. 512 width. 512 height. Display fully transparent and fully opaque pixels.
PlaneSensor No restrictions. Full support.
PointLight No restrictions. radius optionally supported. Linear attenuation.
PointSet 5000 points. 5000 points.
Polyline2D 5000 vertices. 5000 vertices.
Polypoint2D 5000 points. 5000 points.
PositionInterpolator Restrictions as for all interpolators. Full support except as for all interpolators.
ProximitySensor No restrictions. Full support.
Rectangle2D No restrictions. Full support.
ScalarInterpolator Restrictions as for all interpolators. Full support except as for all interpolators.
Script 25 fields of each access type. 25 fields of each access type.
No scripting language support required.
Shape No restrictions. Full support.
Sound No restrictions. 2 active sounds.
Sphere No restrictions. Full support.
SphereSensor No restrictions. Full support.
SpotLight No restriction beamWidth optionally supported. radius optionally supported. Linear attenuation.
StringSensor 100 characters per string. 100 strings. Full support. 100 characters per string. 100 strings.
Switch Restrictions as for all groups. Full support except as for all groups.
Text 100 characters per string. 100 strings. 100 characters per string. 100 strings.
TextureCoordinate 15,000 coordinates. 15,000 coordinates.
TextureCoordinateGenerator No restrictions. Full support.
TextureTransform No restrictions. Full support.
TimeSensor No restrictions. pause optionally supported.
isPaused optionally supported. resumeTime optionally supported.
TimeTrigger No restrictions. Full support.
TouchSensor No restrictions. Full support.
TriangleFanSet 15,000 coordinates. Full support.
TriangleSet 15,000 coordinates. Full support.
TriangleSet2D 15,000 coordinates. Full support.
TriangleStripSet 15,000 coordinates. Full support.
Transform Restrictions as for all groups. Full support except as for all groups.
Viewpoint No restrictions. Full support.
VisibilitySensor No restrictions. Always visible.
WorldInfo No restrictions. Full support.

cube E.6 Other limitations

Table E.4 specifies limitations unrelated to nodes which are imposed by the Immersive profile.

Table E.4 — Other limitations

Item X3D File Limit Minimum Browser Support
All groups 500 children. 500 children. Ignore bboxCenter and bboxSize.
All interpolators 1000 key-value pairs. 1000 key-value pairs.
All lights 8 simultaneous lights. 8 simultaneous lights.
Names for DEF/PROTO/field 50 utf8 octets. 50 utf8 octets.
All url fields 10 URLs. 10 URLs. URN's ignored.
Support 'http', 'file', and 'ftp' protocols.
Support relative URLs where relevant.
PROTO/
EXTERNPROTO
30 fields of each access type. 30 fields of each access type.
EXTERNPROTO  n/a URL references X3D files conforming to the current X3D profile/component configuration
PROTO definition nesting depth 5 levels. 5 levels.
SFBool No restrictions. Full support.
SFColor No restrictions. Full support.
SFColorRGBA No restrictions. Full support.
SFDouble No restrictions. Full support. Range ±1e±12. Precision 1e−7.
SFFloat No restrictions. Full support.
SFImage 512 width. 512 height. 512 width. 512 height.
SFInt32 No restrictions. Full support.
SFNode No restrictions. Full support.
SFRotation No restrictions. Full support.
SFString 30,000 utf8 octets. 30,000 utf8 octets.
SFTime No restrictions. Full support.
SFVec2d 15,000 values. 15,000 values.
SFVec2f 15,000 values. 15,000 values.
SFVec3d 15,000 values. 15,000 values.
SFVec3f 15,000 values. 15,000 values.
MFColor 15,000 values. 15,000 values.
MFColorRGBA 15,000 values. 15,000 values.
MFDouble 1000 values. 1000 values.
MFFloat 1,000 values. 1,000 values.
MFInt32 20,000 values. 20,000 values.
MFNode 500 values. 500 values.
MFRotation 1,000 values. 1,000 values.
MFString 30,000 utf8 octets per string, 10 strings. 30,000 utf8 octets per string, 10 strings.
MFTime 1,000 values. 1,000 values.
MFVec2d 15,000 values. 15,000 values.
MFVec2f 15,000 values. 15,000 values.
MFVec3d 15,000 values. 15,000 values.
MFVec3f 15,000 values. 15,000 values.
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