Lightwave Scene - Revision history

MichaelSullivan at 20:30, 13 May 2009

2009-05-13T20:30:36Z

MichaelSullivan at 20:29, 13 May 2009

2009-05-13T20:29:19Z

MichaelSullivan at 20:28, 13 May 2009

2009-05-13T20:28:48Z

MichaelSullivan at 20:26, 13 May 2009

2009-05-13T20:26:14Z

MichaelSullivan at 20:25, 13 May 2009

2009-05-13T20:25:56Z

MichaelSullivan at 20:23, 13 May 2009

2009-05-13T20:23:58Z

MichaelSullivan at 20:17, 13 May 2009

2009-05-13T20:17:20Z

MichaelSullivan at 20:13, 13 May 2009

2009-05-13T20:13:12Z

MichaelSullivan at 20:10, 13 May 2009

2009-05-13T20:10:05Z

MichaelSullivan: New page: Category:Engineering format '''Title(s):''' Title::LightWave Scene '''Version ID:''' Version ID::NewTek LightWave Scene File Format '''Date released:''' Most recent format sp...

2009-05-13T20:01:30Z

New page: Category:Engineering format '''Title(s):''' Title::LightWave Scene '''Version ID:''' Version ID::NewTek LightWave Scene File Format '''Date released:''' Most recent format sp...

New page

[[Category:Engineering format]]
'''Title(s):''' [[Title::LightWave Scene]]

'''Version ID:''' [[Version ID::NewTek LightWave Scene File Format]]

'''Date released:''' Most recent format specs dated [[Version Date released::October 16, 1996]]

'''Date:''' [[Format Date::1990]]

'''Creator(s):''' [[Creator::NewTek]]

'''Contributor(s):''' [[Contributor::Allen Hastings & Stuart Ferguson]]

'''Relationships:'''

* '''Previous Version(s):''' Inherited from Videoscape 3D and Aegis Modeler 3D on the Commodore Amiga, both circa. 1988.

* '''Contains:''' none

* '''Syntax Format(s):''' LightWave 3D objects are stored as IFF files with a FORM type of LWOB. A FORM LWOB must contain a PNTS chunk, a SRFS chunk, and a POLS chunk. There may be zero or more SURF chunks anywhere in the file and up to one CRVS chunk. The POLS and CRVS chunks must be preceded by the PNTS chunk and the SRFS chunk. LightWave 2.0 also has the ability to save and load surface descriptions as FORM LWOB files that contain only a SURF chunk. Details and further explanation found here: [http://local.wasp.uwa.edu.au/~pbourke/dataformats/lightwave/ Lightwave 3D Object File Format, 11/28/1994]

* '''Family Format(s):''' none

'''Description:''' LightWave 3D objects are stored on disk as 3D meshes consistsing of points, polygons (which can be faces, curves or patches), and surfaces. Files can contain a single connected mesh or several disjoint meshes describing a single logical object. An object file may also contain one or more surface definitions with no mesh.

'''History:''' A detailed account, from 1988 to 2009: [http://www.lightwiki.com/LightWave_History LightWave History].

'''Example(s):''' Detailed object file example found here: [http://www.sandbox.de/osg/lightwave.htm#S5 LightWave Object File Example]

'''Identifier:''' none.

'''Documentation:''' [[Documentation::Documentation Template]] Documentation found here: [http://www.sandbox.de/osg/lightwave.htm#S5 LightWave Object File Format]

'''File Extensions:''' [[File Extension::.lwo]]

'''Applications:''' NewTek LightWave 3D

* '''Native application(s):''' [[Native Application::Engineering Format Application Template]] - Applications which are primarily designed to specifically run this engineering format.

* '''Interoperable applications:''' [[Interoperable Application::Engineering Format Application Template]] - Applications which can read or write files of this format, but are not native applications for the format.

'''Magic numbers:''' n/a

'''Format(s):''' image/x-lw

'''Rights:''' Proprietary license

'''Sustainability Factors:''' n/a

* '''Standardization:''' n/a

* '''Adoption:''' n/a

** '''Licensing and patent claims:''' n/a

* '''Self-documentation:''' n/a

* '''External dependencies:''' n/a

* '''Technical protection considerations:''' n/a

'''Typical use:''' 3D Design

'''File classification:'''
* '''Type {Binary, Text}:''' Binary
* '''Raster data:'''
** '''Raster data 2D:'''
*** '''Is Supported:''' true
*** '''Description:'''
** '''Raster data 3D:'''
*** '''Is Supported:''' true
*** '''Description:'''
* '''Geometric representation:'''
** '''Implicit representation:'''
*** '''Implicit surfaces:'''
**** '''Is Supported:''' true
**** '''Description:''' The SRFS chunk contains a list of the names of all the surfaces in an object (note that in LightWave 3D terminology, the word "surface" is defined as a set of attributes that describe the color and shading characteristics of a group of polygons). Each surface name appears as a null-terminated character string. If the length of the string (including the null) is odd, an extra null byte is added. Surface names should be read from the file until as many bytes as the chunk size specifies have been read.
*** '''Implicit curves:'''
**** '''Is Supported:''' true
**** '''Description:''' The CRVS chunk contains a list of all the spline curves in an object. Each entry consists of a short integer specifying the number of vertices in a curve followed by that many short integers specifying the vertices themselves in sequential order, followed by a short integer specifying which surface is used by the curve, followed by another short integer specifying bit-flags associated with the curve. If bit zero is set then the first point is a continuity control point, and if bit one is set then the last point is. The point and surface indices are as they are in the POLS chunk, except that curves cannot have details. Curves should be read from the file until as many bytes as the chunk size specifies have been read.
*** '''Point set:'''
**** '''Is Supported:''' true
**** '''Description:''' The PNTS chunk contains a list of the X, Y, and Z coordinates of all the points in an object. Each coordinate is stored as a four byte floating point number in IEEE format. Therefore, the number of points in an object can be determined by dividing the size in bytes of the PNTS chunk by 12.
** '''Mesh:'''
*** '''Manifold surface meshes:'''
**** '''Is Supported:''' true
**** '''Description:'''
*** '''Manifold volume meshes:'''
**** '''Is Supported:''' false
**** '''Description:'''
*** '''Non-manifold meshes:'''
**** '''Is Supported:''' false
**** '''Description:'''
** '''Parametric representation:'''
*** '''Parametric surfaces:'''
**** '''Is Supported:''' false
**** '''Description:'''
*** '''Parametric curves:'''
**** '''Is Supported:''' false
**** '''Description:'''
** '''Contour sets:'''
*** '''Is Supported:''' false
*** '''Description:'''
** '''NURBS:'''
*** '''Is Supported:''' false
*** '''Description:'''
* '''Multi-resolution models:'''
** '''Is Supported:''' false
** '''Description:''' false
* '''Dynamics:'''
** '''Kinematics:'''
*** '''Is Supported:''' false
*** '''Description:''' LScript is scripting language supplied by NewTek that can generate automation.
** '''Assembly:'''
*** '''Is Supported:''' false
*** '''Description:'''
** '''Force(s):'''
*** '''Is Supported:''' false
*** '''Description:'''
* '''Boundary representation'''
** '''Manifold surface boundary representations:'''
*** '''Is Supported:''' false
*** '''Description:'''
** '''Manifold volume boundary representations:'''
*** '''Is Supported:''' false
*** '''Description:'''
** '''Non-manifold boundary representations:'''
*** '''Is Supported:'''false
*** '''Description:'''
* '''Material transparency:'''
** '''Is Supported:''' false
** '''Description:'''

'''References:'''
* [http://local.wasp.uwa.edu.au/~pbourke/dataformats/lightwave/ LightWave 3D Object File Format]
* [http://www.sandbox.de/osg/lightwave.htm LightWave File Format]
* [http://www.lightwiki.com/LightWave_History LightWave History at LightWiki]

@@ Line 145: / Line 145: @@
 '''References:'''
 * [http://www.lightwiki.com/LightWave_History LightWave History at LightWiki]
-* NOTE: Not many references found for LightWave Scenes (.lws).
+* [http://www.okino.com/slidshow/lw.htm LightWave Scene Renderings]

@@ Line 45: / Line 45: @@
 '''File Extensions:''' [[File Extension::.lws]]
-'''Applications:''' NewTek LightWave 3D
+'''Applications:'''
-* '''Native application(s):''' n/a
+* '''Native application(s):''' NewTek LightWave 3D
 * '''Interoperable applications:''' n/a

@@ Line 37: / Line 37: @@
 '''History:''' A detailed account of LightWave 3D, from 1988 to 2009: [http://www.lightwiki.com/LightWave_History LightWave History].
-'''Example(s):'''
+'''Example(s):''' Image examples can be found here: [http://www.okino.com/slidshow/lw.htm LightWave Scene Renderings]
 '''Identifier:''' none.

@@ Line 22: / Line 22: @@
 * '''Family Format(s):''' n/a
-'''Description:''' Lightwave scene files (*.lws) embed the pathnames to object files (*.lwo) within them, and that object files have pathnames to image files (for textures) embedded in them. Whatever those pathnames are in those files must be valid for the directory in which you are running the application that loads the scene file. For example, if I was loading in a scene file that referred to an object file called "data/object.lwo", then the file "object.lwo" should be located in a subdirectory of this current directory called "data".
+'''Description:'''
 '''History:''' A detailed account of LightWave 3D, from 1988 to 2009: [http://www.lightwiki.com/LightWave_History LightWave History].

@@ Line 4: / Line 4: @@
 '''Version ID:''' [[Version ID::NewTek LightWave Scene File Format]]
-'''Date released:''' Most recent format specs dated [[Version Date released::October 16, 1996]]
+'''Date released:''' Most recent format specs dated [[Version Date released::June, 1995]]
 '''Date:'''  [[Format Date::1990]]
@@ Line 30: / Line 30: @@
 '''Identifier:''' none.
-'''Documentation:''' n/a
+'''Documentation:''' Details found here: [http://www.martinreddy.net/gfx/3d/LWSC.txt LightWave Scene File Format, June 1995]
 '''File Extensions:''' [[File Extension::.lws]]

@@ Line 74: / Line 74: @@
 '''File classification:'''
-* '''Type {Binary, Text}:''' Binary
+* '''Type {Binary, Text}:''' Text
 * '''Raster data:'''
 ** '''Raster data 2D:'''

@@ Line 66: / Line 66: @@
 * '''Raster data:'''
 ** '''Raster data 2D:'''
-*** '''Is Supported:''' true
+*** '''Is Supported:''' n/a
 *** '''Description:'''
 ** '''Raster data 3D:'''
-*** '''Is Supported:''' true
+*** '''Is Supported:''' n/a
 *** '''Description:'''
 * '''Geometric representation:'''
 ** '''Implicit representation:'''
 *** '''Implicit surfaces:'''
-**** '''Is Supported:''' true
+**** '''Is Supported:''' n/a
-**** '''Description:''' The SRFS chunk contains a list of the names of all the surfaces in an object (note that in LightWave 3D terminology, the word "surface" is defined as a set of attributes that describe the color and shading characteristics of a group of polygons). Each surface name appears as a null-terminated character string. If the length of the string (including the null) is odd, an extra null byte is added. Surface names should be read from the file until as many bytes as the chunk size specifies have been read.
+**** '''Description:'''
 *** '''Implicit curves:'''
-**** '''Is Supported:''' true
+**** '''Is Supported:''' n/a
-**** '''Description:''' The CRVS chunk contains a list of all the spline curves in an object. Each entry consists of a short integer specifying the number of vertices in a curve followed by that many short integers specifying the vertices themselves in sequential order, followed by a short integer specifying which surface is used by the curve, followed by another short integer specifying bit-flags associated with the curve.  If bit zero is set then the first point is a continuity control point, and if bit one is set then the last point is.  The point and surface indices are as they are in the POLS chunk, except that curves cannot have details.  Curves should be read from the file until as many bytes as the chunk size specifies have been read.
+**** '''Description:'''
 *** '''Point set:'''
-**** '''Is Supported:''' true
+**** '''Is Supported:''' n/a
-**** '''Description:''' The PNTS chunk contains a list of the X, Y, and Z coordinates of all the points in an object.  Each coordinate is stored as a four byte floating point number in IEEE format.  Therefore, the number of points in an object can be determined by dividing the size in bytes of the PNTS chunk by 12.
+**** '''Description:'''
 ** '''Mesh:'''
 *** '''Manifold surface meshes:'''
-**** '''Is Supported:''' true
+**** '''Is Supported:''' n/a
 **** '''Description:'''
 *** '''Manifold volume meshes:'''
-**** '''Is Supported:''' false
+**** '''Is Supported:''' n/a
 **** '''Description:'''
 *** '''Non-manifold meshes:'''
-**** '''Is Supported:''' false
+**** '''Is Supported:''' n/a
 **** '''Description:'''
 ** '''Parametric representation:'''
 *** '''Parametric surfaces:'''
-**** '''Is Supported:''' false
+**** '''Is Supported:''' n/a
 **** '''Description:'''
 *** '''Parametric curves:'''
-**** '''Is Supported:''' false
+**** '''Is Supported:''' n/a
 **** '''Description:'''
 ** '''Contour sets:'''
-*** '''Is Supported:''' false
+*** '''Is Supported:''' n/a
 *** '''Description:'''
 ** '''NURBS:'''
-*** '''Is Supported:''' false
+*** '''Is Supported:''' n/a
 *** '''Description:'''
 * '''Multi-resolution models:'''
-** '''Is Supported:''' false
+** '''Is Supported:''' n/a
-** '''Description:''' false
+** '''Description:''' n/a
 * '''Dynamics:'''
 ** '''Kinematics:'''
-*** '''Is Supported:''' false
+*** '''Is Supported:''' n/a
-*** '''Description:''' LScript is scripting language supplied by NewTek that can generate automation.
+*** '''Description:'''
 ** '''Assembly:'''
-*** '''Is Supported:''' false
+*** '''Is Supported:''' n/a
 *** '''Description:'''
 ** '''Force(s):'''
-*** '''Is Supported:''' false
+*** '''Is Supported:''' n/a
 *** '''Description:'''
 * '''Boundary representation'''
 ** '''Manifold surface boundary representations:'''
-*** '''Is Supported:''' false
+*** '''Is Supported:''' n/a
 *** '''Description:'''
 ** '''Manifold volume boundary representations:'''
-*** '''Is Supported:''' false
+*** '''Is Supported:''' n/a
 *** '''Description:'''
 ** '''Non-manifold boundary representations:'''
-*** '''Is Supported:'''false
+*** '''Is Supported:'''n/a
 *** '''Description:'''
 * '''Material transparency:'''
-** '''Is Supported:''' false
+** '''Is Supported:''' n/a
 ** '''Description:'''
 '''References:'''
 * [http://www.lightwiki.com/LightWave_History LightWave History at LightWiki]

@@ Line 18: / Line 18: @@
 * '''Contains:''' none
-* '''Syntax Format(s):''' LightWave 3D objects are stored as IFF files with a FORM type of LWOB. A FORM LWOB must contain a PNTS chunk, a SRFS chunk, and a POLS chunk.  There may be zero or more SURF chunks anywhere in the file and up to one CRVS chunk. The POLS and CRVS chunks must be preceded by the PNTS chunk and the SRFS chunk. LightWave 2.0 also has the ability to save and load surface descriptions as FORM LWOB files that contain only a SURF chunk. Details and further explanation found here: [http://local.wasp.uwa.edu.au/~pbourke/dataformats/lightwave/ Lightwave 3D Object File Format, 11/28/1994]
+* '''Syntax Format(s):''' n/a
-* '''Family Format(s):''' none
+* '''Family Format(s):''' n/a
-'''Description:''' LightWave 3D objects are stored on disk as 3D meshes consistsing of points, polygons (which can be faces, curves or patches), and surfaces. Files can contain a single connected mesh or several disjoint meshes describing a single logical object. An object file may also contain one or more surface definitions with no mesh.
+'''Description:''' n/a
-'''History:''' A detailed account, from 1988 to 2009: [http://www.lightwiki.com/LightWave_History LightWave History].
+'''History:''' A detailed account of LightWave 3D, from 1988 to 2009: [http://www.lightwiki.com/LightWave_History LightWave History].
-−
-'''Example(s):''' Detailed object file example found here: [http://www.sandbox.de/osg/lightwave.htm#S5 LightWave Object File Example]
 '''Identifier:''' none.
-'''Documentation:''' [[Documentation::Documentation Template]] Documentation found here: [http://www.sandbox.de/osg/lightwave.htm#S5 LightWave Object File Format]
+'''Documentation:''' n/a
-'''File Extensions:''' [[File Extension::.lwo]]
+'''File Extensions:''' [[File Extension::.lws]]
 '''Applications:''' NewTek LightWave 3D
-* '''Native application(s):''' [[Native Application::Engineering Format Application Template]] - Applications which are primarily designed to specifically run this engineering format.
+* '''Native application(s):''' n/a
-* '''Interoperable applications:''' [[Interoperable Application::Engineering Format Application Template]] - Applications which can read or write files of this format, but are not native applications for the format.
+* '''Interoperable applications:''' n/a
 '''Magic numbers:''' n/a
-'''Format(s):''' image/x-lw
+'''Format(s):''' n/a
 '''Rights:''' Proprietary license