Second Life Wiki - User contributions [en]

Content Creation, Mesh Import, Scripting User Group

2011-05-02T16:20:29Z

Sebastean Steamweaver:

{{User Group Page
|purpose=
Although the header says "Content Creation/Mesh Import/Scripting", currently topics are focused on anything related to the mesh import project. Feature requests, bug reports, design feedback, questions, comments, or example content are welcome.

Priority will be given to topics that are posted in advance and are relevant to the goals of the office hour. Feel free to include relevant links to JIRA or wiki pages.

|date-time=
Mondays at 11 AM in Pacific time (SL standard time)

Next meeting scheduled for: '''May 2, 2011'''

|location=
[secondlife://Aditi/secondlife/MeshHQ%201/251/250/24 Mesh HQ on Aditi]
|team=
Charlar Linden, Nyx Linden, and Runitai Linden. Please contact one of us if you are unsure if your topic is relevant or appropriate.
|agenda=
 
Please add topics below '''prior to 10:50 AM'''. Also, please put your SL name down so we can follow up if we have questions. Thanks!
# Can you explain at what points meshes are tested for "validity" and whether that can account for delayed disappearance of objects several hours or days after they are rezzed without any error indications, and/or for semmingly random silent rezzing failures. [Drongle McMahon].
# Has account-wide throttling for changing of UUIDs on meshes been looked into such as is used in the HTTP functions? (i.e. An account in a sim cannot swap any mesh UUID more than X times in X seconds - suggested values 1 swap in 6/8/10 seconds; account-wide throttle would prevent "gaming" with multiple scripts as was the very intention of its use in HTTP). [Sebastean Steamweaver]
# Can you give us an update on recent progress and what your current priorities are? [Vivienne Daguerre]
# Is there anything in particular you need us to test? [Vivienne Daguerre]
# please add your agenda items here

|archive=
* [[Mesh_User_Group/Archive|Agenda and notes archive]]
* [[User:Nyx_Linden/Mesh_Office_Hours_Agenda_Archive|Older archives]]
}}
[[Category:Mesh]]

Content Creation, Mesh Import, Scripting User Group

2011-05-02T16:05:17Z

Sebastean Steamweaver:

{{User Group Page
|purpose=
Although the header says "Content Creation/Mesh Import/Scripting", currently topics are focused on anything related to the mesh import project. Feature requests, bug reports, design feedback, questions, comments, or example content are welcome.

Priority will be given to topics that are posted in advance and are relevant to the goals of the office hour. Feel free to include relevant links to JIRA or wiki pages.

|date-time=
Mondays at 11 AM in Pacific time (SL standard time)

Next meeting scheduled for: '''May 2, 2011'''

|location=
[secondlife://Aditi/secondlife/MeshHQ%201/251/250/24 Mesh HQ on Aditi]
|team=
Charlar Linden, Nyx Linden, and Runitai Linden. Please contact one of us if you are unsure if your topic is relevant or appropriate.
|agenda=
 
Please add topics below '''prior to 10:50 AM'''. Also, please put your SL name down so we can follow up if we have questions. Thanks!
# Can you explain at what points meshes are tested for "validity" and whether that can account for delayed disappearance of objects several hours or days after they are rezzed without any error indications, and/or for semmingly random silent rezzing failures. [Drongle McMahon].
# Has account-wide throttling for changing of UUIDs on meshes been looked into such as is used in the HTTP functions? (i.e. An account in a sim cannot swap any mesh UUID more than X times in X seconds - suggested values 1 swap in 5 seconds; account-wide throttle would prevent "gaming" with multiple scripts as was the very intention of its use in HTTP). [Sebastean Steamweaver]
# Can you give us an update on recent progress and what your current priorities are? [Vivienne Daguerre]
# Is there anything in particular you need us to test? [Vivienne Daguerre]
# please add your agenda items here

|archive=
* [[Mesh_User_Group/Archive|Agenda and notes archive]]
* [[User:Nyx_Linden/Mesh_Office_Hours_Agenda_Archive|Older archives]]
}}
[[Category:Mesh]]

Content Creation, Mesh Import, Scripting User Group

2011-05-02T15:58:38Z

Sebastean Steamweaver:

{{User Group Page
|purpose=
Although the header says "Content Creation/Mesh Import/Scripting", currently topics are focused on anything related to the mesh import project. Feature requests, bug reports, design feedback, questions, comments, or example content are welcome.

Priority will be given to topics that are posted in advance and are relevant to the goals of the office hour. Feel free to include relevant links to JIRA or wiki pages.

|date-time=
Mondays at 11 AM in Pacific time (SL standard time)

Next meeting scheduled for: '''May 2, 2011'''

|location=
[secondlife://Aditi/secondlife/MeshHQ%201/251/250/24 Mesh HQ on Aditi]
|team=
Charlar Linden, Nyx Linden, and Runitai Linden. Please contact one of us if you are unsure if your topic is relevant or appropriate.
|agenda=
 
Please add topics below '''prior to 10:50 AM'''. Also, please put your SL name down so we can follow up if we have questions. Thanks!
# Can you explain at what points meshes are tested for "validity" and whether that can account for delayed disappearance of objects several hours or days after they are rezzed without any error indications, and/or for semmingly random silent rezzing failures. [Drongle McMahon].
# Has account-wide throttling for changing of UUIDs on meshes been looked into such as is used in the HTTP functions? (i.e. An account in a sim cannot swap any mesh UUID more than X times in X seconds - suggested values 5 swaps in 50 seconds, meaning no more than one swap per 10 seconds; account-wide throttle would prevent "gaming" with multiple scripts as was the very intention of its use in HTTP). [Sebastean Steamweaver]
# Can you give us an update on recent progress and what your current priorities are? [Vivienne Daguerre]
# Is there anything in particular you need us to test? [Vivienne Daguerre]
# please add your agenda items here

|archive=
* [[Mesh_User_Group/Archive|Agenda and notes archive]]
* [[User:Nyx_Linden/Mesh_Office_Hours_Agenda_Archive|Older archives]]
}}
[[Category:Mesh]]

Content Creation, Mesh Import, Scripting User Group

2011-05-02T15:57:24Z

Sebastean Steamweaver:

{{User Group Page
|purpose=
Although the header says "Content Creation/Mesh Import/Scripting", currently topics are focused on anything related to the mesh import project. Feature requests, bug reports, design feedback, questions, comments, or example content are welcome.

Priority will be given to topics that are posted in advance and are relevant to the goals of the office hour. Feel free to include relevant links to JIRA or wiki pages.

|date-time=
Mondays at 11 AM in Pacific time (SL standard time)

Next meeting scheduled for: '''May 2, 2011'''

|location=
[secondlife://Aditi/secondlife/MeshHQ%201/251/250/24 Mesh HQ on Aditi]
|team=
Charlar Linden, Nyx Linden, and Runitai Linden. Please contact one of us if you are unsure if your topic is relevant or appropriate.
|agenda=
 
Please add topics below '''prior to 10:50 AM'''. Also, please put your SL name down so we can follow up if we have questions. Thanks!
# Can you explain at what points meshes are tested for "validity" and whether that can account for delayed disappearance of objects several hours or days after they are rezzed without any error indications, and/or for semmingly random silent rezzing failures. [Drongle McMahon].
# Has account-wide throttling for changing of UUIDs on meshes been looked into such as is used in the HTTP functions? (i.e. An account in a sim cannot swap any mesh UUID more than X times in X seconds - suggested values 5 swaps in 50 seconds, meaning no more than one swap per 10 seconds; account-wide throttle would prevent "gaming" with multiple scripts as was the very intention of its use in HTTP).
# Can you give us an update on recent progress and what your current priorities are? [Vivienne Daguerre]
# Is there anything in particular you need us to test? [Vivienne Daguerre]
# please add your agenda items here

|archive=
* [[Mesh_User_Group/Archive|Agenda and notes archive]]
* [[User:Nyx_Linden/Mesh_Office_Hours_Agenda_Archive|Older archives]]
}}
[[Category:Mesh]]

Content Creation, Mesh Import, Scripting User Group

2011-05-02T15:50:58Z

Sebastean Steamweaver:

{{User Group Page
|purpose=
Although the header says "Content Creation/Mesh Import/Scripting", currently topics are focused on anything related to the mesh import project. Feature requests, bug reports, design feedback, questions, comments, or example content are welcome.

Priority will be given to topics that are posted in advance and are relevant to the goals of the office hour. Feel free to include relevant links to JIRA or wiki pages.

|date-time=
Mondays at 11 AM in Pacific time (SL standard time)

Next meeting scheduled for: '''May 2, 2011'''

|location=
[secondlife://Aditi/secondlife/MeshHQ%201/251/250/24 Mesh HQ on Aditi]
|team=
Charlar Linden, Nyx Linden, and Runitai Linden. Please contact one of us if you are unsure if your topic is relevant or appropriate.
|agenda=
 
Please add topics below '''prior to 10:50 AM'''. Also, please put your SL name down so we can follow up if we have questions. Thanks!
# Can you explain at what points meshes are tested for "validity" and whether that can account for delayed disappearance of objects several hours or days after they are rezzed without any error indications, and/or for semmingly random silent rezzing failures. [Drongle McMahon].
# Has account-wide throttling for changing of UUIDs on meshes been looked into such as is used in the HTTP functions? (i.e. One account in a sim cannot swap any mesh UUID more than X times in X seconds).
# please add your agenda items here

|archive=
* [[Mesh_User_Group/Archive|Agenda and notes archive]]
* [[User:Nyx_Linden/Mesh_Office_Hours_Agenda_Archive|Older archives]]
}}
[[Category:Mesh]]

User:Nyx Linden/Office Hours Agenda

2010-10-27T15:54:05Z

Sebastean Steamweaver:

User:Nyx Linden/Office Hours Agenda

2010-10-20T19:08:21Z

Sebastean Steamweaver: /* October 20, 2010 */

LlCastRay

2010-07-02T23:40:17Z

Sebastean Steamweaver:

Awesome placeholder for Awesome llCastRay!

User:Nyx Linden/Office Hours Agenda

2010-04-21T19:42:32Z

Sebastean Steamweaver:

User:Nyx Linden/Office Hours Agenda

2010-04-21T19:40:04Z

Sebastean Steamweaver:

User:Nyx Linden/Office Hours Agenda

2010-04-21T19:02:23Z

Sebastean Steamweaver:

User:Nyx Linden/Office Hours Agenda

2010-04-21T18:35:44Z

Sebastean Steamweaver: /* April 21, 2010 */

User:Nyx Linden/Office Hours Agenda

2010-04-07T18:56:33Z

Sebastean Steamweaver:

User:Nyx Linden/Office Hours Agenda

2010-03-31T16:48:28Z

Sebastean Steamweaver: /* April 7, 2010 */

PRIM TEXT

2010-03-24T22:13:29Z

Sebastean Steamweaver:

<onlyinclude>{{#if:

{{LSL Function/color|color}}
{{LSL Function/alpha|alpha}}

{{#vardefine:p_text_set_hover|floating text to display}}
{{#vardefine:p_text_get_hover|floating text displayed}}
{{#vardefine:p_text_hover|{{#switch:{{{1|}}}|get={{#var:p_text_get_hover}}|set={{#var:p_text_set_hover}}|floating text}}}}

{{#vardefine:p_text_set_desc|[[llSetText|floating text]] to display}}
{{#vardefine:p_text_get_desc|[[llSetText|floating text]] displayed}}
{{#vardefine:p_text_desc|{{#switch:{{{1|}}}|get={{#var:p_text_get_desc}}|set={{#var:p_text_set_desc}}|[[llSetText|floating text]]}}}}

{{#vardefine:text_const|{{LSL Const|PRIM_TEXT|integer|26|c=Used to {{GetSet|{{{1|}}}|get|set|/}} the object's floating text}}}}

{{#vardefine:caveats|{{#var:caveats}}
* Do not rely on {{#var:text_const}} as a secure storage medium. Floating text has been altered in past server updates, and even "invisible" floating text can be read by anybody who has a client modified to do so.}}

}}</onlyinclude>{{#if:

}}{{LSL Constant
|name=PRIM_TEXT
|type=integer
|value=26
|desc={{KBcaution|This function is not yet released and will be available with Server 1.38.}}
Used to get or set the object's [[llSetText|floating text]].
|pa={{LSL Constant/List|i_front=[[llSetPrimitiveParams]]([ {{#var:text_const}}, |i_end= ]
|text=Syntax for: [[llSetPrimitiveParams]], [[llSetLinkPrimitiveParams]] & [[llSetLinkPrimitiveParamsFast]]
|i1_type=string|i1_name=text_set|i1_disp=text
|i2_type=vector|i2_name=color
|i3_type=float|i3_name=alpha
|toc=llSetPrimitiveParams
}}
|pb={{LSL Constant/List|i_front=[[llGetPrimitiveParams]]([ {{#var:text_const}}|i_end= ]);|
|r_front=Returns the list [ |r_end= ]
|text=Syntax for: [[llGetPrimitiveParams]], [[llGetLinkPrimitiveParams]]
|r1_type=string|r1_name=text_get|r1_disp=text
|r2_type=vector|r2_name=color
|r3_type=float|r3_name=alpha
|toc=llGetPrimitiveParams
}}
|examples=
|constants=
|functions=
{{LSL DefineRow||[[llSetPrimitiveParams]]|}}
{{LSL DefineRow||[[llSetLinkPrimitiveParams]]|}}
{{LSL DefineRow||[[llSetLinkPrimitiveParamsFast]]|}}
{{LSL DefineRow||[[llGetPrimitiveParams]]|}}
{{LSL DefineRow||[[llGetLinkPrimitiveParams]]|}}
{{LSL DefineRow||[[llSetText]]|}}
|events
|location
|cat1=Prim
|cat2=Floating Text
|cat3
|cat4
}}

User:Nyx Linden/Office Hours Agenda

2010-03-10T20:17:43Z

Sebastean Steamweaver:

==Nyx Linden's Office Hours Agenda==

Office hours are on Wednesdays at Noon in Pacific time (SL standard time) located in Borrowdale at: http://slurl.com/secondlife/Borrowdale/74/217/32

Topics are focused on avatars, content creation efficiency, content creation tools and methods, rendering issues, and many related random topics.

Please add topics for discussion / agenda items to the end of the list below prior to 11:50 AM. Priority will be given to topics that are posted in advance and are relevant to the goals of the office hour. Feel free to include relevant links to JIRA or wiki pages. Contact Nyx Linden if you are unsure if your topic is relevant or appropriate.

Archived agendas can be found at the [[User:Nyx_Linden/Office_Hours_Agenda_Archive|agenda archive]].

Next meeting scheduled for: March 10, 2010.

===Agenda===

==March 10, 2010==
# Content Forums: Stickies & locking Scripting Library to original posters (only OP replies) -- '''[[User:Void_Singer|Void]]''' ([[User_talk:Void_Singer|talk]]|[[Special:Contributions/Void_Singer|contribs]]) 18:57, 10 March 2010 (UTC)
# Building workflow is broken, you cant build anymore when there is no visible ground, only prims. You need to go to the top menu now or use Ctrl-B to continue building (create new prims). Can we get back 'Build' to the context menu? -- [[User:Tillie Ariantho|Tillie Ariantho]] 19:37, 10 March 2010 (UTC)
# Why is there no "sit" so the avatar can sit on the ground? -- [[User:Tillie Ariantho|Tillie Ariantho]] 19:37, 10 March 2010 (UTC)
# "Show color under cursor" - this would be more helpful if it would grab the color from the texture, not from the view (light alienates the value) -- [[User:Tillie Ariantho|Tillie Ariantho]] 19:37, 10 March 2010 (UTC)
# Any timeline for mesh import (interested in the avatar part here)? -- [[User:Tillie Ariantho|Tillie Ariantho]] 19:01, 10 March 2010 (UTC)
# Any minor updates on the current avatar in the pipeline? there are some jiras that suggest VERY small changes like a fix for the crotch area. Would not really break content. -- [[User:Tillie Ariantho|Tillie Ariantho]] 19:01, 10 March 2010 (UTC)
# "Correction: This issue was incorrectly reported as fixed in Viewer 2. We sincerely regret the error. 366 Votes - VWR-11397[c]: Smaller Avis without being Tinys :) or More features for poor Tinys" ... is this coming or was this just a COMPLETE error at all? -- [[User:Tillie Ariantho|Tillie Ariantho]] 19:21, 10 March 2010 (UTC)
# Snapshots: I keep crashing due to exhausted memory (about 1,3 GB) when doing snapshots, why is that? Can we have a 64bit client? Would maybe help. I just used only FRAPS today and didnt crash once, even with many prims around and huge viewrange, its definitely the snapshot feaure that crashes the client: http://jira.secondlife.com/browse/VWR-12230 It has a DEV id now, so I can expect that it gets fixed? -- [[User:Tillie Ariantho|Tillie Ariantho]] 19:01, 10 March 2010 (UTC)
# Any updates on the Nyx Bear? -- [[User:Tillie Ariantho|Tillie Ariantho]] 19:02, 10 March 2010 (UTC)
# How extensive were the changes required to implement the two new wearables. Is porting to 1.23 code mission impossible if a TPV dev would attempt it? [[User:Latif Khalifa|Latif Khalifa]]
# Any tidbits or fun stuff you can tell us about what is coming? -- [[User:Sebastean Steamweaver|Sebastean Steamweaver]]
# your topic here!

User:Nyx Linden/Office Hours Agenda

2010-03-10T20:16:58Z

Sebastean Steamweaver:

Aditi/ThouMustNotFail

2010-02-25T23:49:02Z

Sebastean Steamweaver:

= Thou Must Not Fail =
== Synopsis ==
This is a list of the most critical resident created objects used in Second Life that need to always work.
== The Reasoning ==
Second Life is very complex. There are an infinite number of ways to do things in Second Life. These methods may be right or wrong. These methods may exploit bugs or logic holes. While testing upcoming server releases it just isn't possible to test everything resident created. QA will test changed features and make sure they work as expected. Oftentimes there are edge cases that fail without QA's knowledge. This list is a list of really important items that should always work. We will test these objects early on in the QA process and use it as a sort of canary in the coal mine test.
= Vendors =
* Hippo technologies products (hippo rent and hippo vend)
= Land Management Tools =
* bjects with ban/kick users
* automated parcel rental systems
= Physics =
* Posjump things
* Flight Feathers

User:Nyx Linden/Office Hours Agenda

2010-02-24T20:03:54Z

Sebastean Steamweaver:

User:Nyx Linden/Office Hours Agenda

2010-02-17T20:04:10Z

Sebastean Steamweaver:

User:Nyx Linden/Office Hours Agenda

2009-11-18T20:23:40Z

Sebastean Steamweaver:

User:Nyx Linden/Office Hours Agenda

2009-11-18T20:22:55Z

Sebastean Steamweaver:

User:Nyx Linden/Office Hours Agenda

2009-11-04T20:16:29Z

Sebastean Steamweaver: /* November 4, 2009 */

User:Nyx Linden/Office Hours Agenda

2009-11-04T20:07:16Z

Sebastean Steamweaver: /* November 4, 2009 */

User:Nyx Linden/Office Hours Agenda

2009-11-04T20:05:55Z

Sebastean Steamweaver:

User:Nyx Linden/Office Hours Agenda

2009-10-28T19:04:54Z

Sebastean Steamweaver:

User:Nyx Linden/Office Hours Agenda

2009-09-30T19:23:15Z

Sebastean Steamweaver: /* September 30, 2009 */

User:Nyx Linden/Office Hours Agenda

2009-09-16T19:14:38Z

Sebastean Steamweaver: /* September 16, 2009 */

User:Nyx Linden/Office Hours Agenda

2009-09-16T19:04:24Z

Sebastean Steamweaver:

User:Nyx Linden/Office Hours Agenda

2009-08-19T16:18:18Z

Sebastean Steamweaver:

User:Nyx Linden/Office Hours Agenda

2009-08-19T16:17:43Z

Sebastean Steamweaver:

Category:LSL List

2009-08-13T14:20:49Z

Sebastean Steamweaver:

{{LSL Header|ml=*}}{{LSLC|}}{{LSLC|Types}}

A list is a special kind of data type which can contain zero or more elements.

Lists are signified by square brackets surrounding their elements; the elements inside are separated by commas.

Examples:
<lsl>[0,1,2,3,4]

["Yes","No","Perhaps"]</lsl>

(Note: to be clear for those who have other programming backgrounds, there are no arrays in LSL: only lists.)

'''Diverse Data Types'''

Not all elements in a list need to be the same type of element. In the same list, you can store strings, integers, floats, vectors, etc, right side by side.

Example:
//a list with an integer, a float, a string, and a vector.
<lsl>[1,14.154,"Isn't this fun?",<0,0,0>]</lsl>

However, a list may not contain another list (i.e. you can't nest them.)

<lsl>[1, "one", 2, "two"] + [3, "three"] returns [1, "one", 2, "two", 3, "three"]</lsl>
not
<lsl>[1, "one", 2, "two", [3, "three"]]</lsl>

When you add an element to a list, the list remembers automatically what data type the value was.

Generally, because you're the one adding something to a list, you know what datatype is in what place in the list, and you retrieve it out of the list with the appropriate llList2<type> function such as: [[llList2String]], [[llList2Vector]], etc. (more on this later.)

If for some reason, though, you need to test what data type an element is in a list, you can use the [[llGetListEntryType]] function.

Tip! When adding a [[float]] to a list, always add it with a decimal point (e.g 1.0 as opposed to 1) to ensure that it is preserved as a float.

List can be directly typecast into string
<lsl>default
{
touch_start(integer total_number)
{
list a = ["abc",1,2,3.14,<0,0,0>];
llOwnerSay((string)a); // outcome: abc123.140000<0.000000, 0.000000, 0.000000>
}
}</lsl>

'''Counting place in a list vs list length'''

It's important at the outset to note the following (which can trip up even experienced minds when they are battle-weary):

<lsl>["Yes","No","Perhaps"]</lsl>

The length of this list is 3, because it has 3 elements in it. The length of a list is returned by the [[llGetListLength]]() function:

<lsl>integer length = llGetListLength(mylist);</lsl>

BUT, counting to determine an element's place in its list (aka "indexing") starts at 0 -- NOT 1.

The position of "Yes" in the above list is 0, "No" is at position 1, and "Perhaps" is at position 2.

Consequently, if you have 7 elements in a list, the last item in the list will be at position 6.

Thus to retrieve the last element in a list, without having to know in advance what position it is at, you can just go:

<lsl>integer length = llGetListLength(mylist);
string item = llList2String(myList,length - 1);</lsl>

'''List Limits'''

While a script is running, a list can grow dynamically as large as needed, limited only by the amount of memory that is available in the script.

However, at compile (aka save) time, there is a 72 element limit to pre-defined lists hardcoded in the script. Such long, predefined lists are common, for example, when someone is offering the user a plethora of colour choices.

Tip! If you really need 72 or more such choices in a pre-defined list, just make 2 (or more) lists that don't upset the compiler, and join them together in state_entry() or wherever appropriate:

<lsl>biggerlist = biglist01 + biglist02;</lsl>

'''Adding an Element to a list'''

There are several ways used to add an element to an existing list via prepending/appending:

# myList = '''['''new_item''']''' + myList; '''Best method for Mono-LSL'''
# myList = myList + [new_item];
# myList += [new_item];
# myList = (myList=[]) + myList + [new_item];
# myList = myList + new_item;
# myList += new_item;
# myList = (myList=[]) + myList + new_item; '''Best method for LSO-LSL'''

'''Notes'''
* As of 8/8/2009 Method 1 gives significant savings over any other method used in Mono-LSL.
** Note that prepending the new_item '''without''' brackets '''negates''' any memory savings in Mono-LSL.
** Method 1 will consume more memory than other methods in LSO-LSL.
* As of 8/8/2009 Method 7 returns the best value for savings in LSO-LSL.
** Method 7 is better than Method 4 due to the fact that Method 7 takes up less script overhead.
** Method 7 test script compiled to have a start memory of 15878, while Method 4 compiled to have a start memory of 15871. As a result Method 7 had more free memory than Method 4 at the end of the test operation.
* Methods 2 & 3 compile to the same thing.
* Methods 5 & 6 compile to the same thing.
* Methods 5, 6 & 7 have a bytecode savings over methods 2, 3 & 4 respectively, though there is an LSO-LSL VM bug that causes the string & key typecasts to not stick properly: {{Jira|SVC-1710}}.
* Methods 4 & 7 can result in a considerable memory savings in LSO-LSL over methods 2, 3, 5 & 6 (it helps reduce heap fragmentation, which would otherwise result in unusable blocks of heap memory){{Footnote|This method was invented and popularized by {{User|Strife Onizuka}}|This method was invented and popularized by Strife Onizuka}}. In Mono-LSL it provides no significant memory advantage or disadvantage.
** Depending upon the situation (in LSO-LSL) this method may not provide any advantage what so ever. If in doubt profile the script with and without using this method.

'''Joining Lists (aka Concatenation)'''

Lists can be joined simply by using the + sign:

<lsl>newlist = list01 + list02;

newlist = list01 + ["red","brown",<0,0,0>];</lsl>

Note: The above example actually creates 3 lists in memory while the command runs, even though just one is returned. This can affect memory usage.

'''Clearing a List'''

To clear a list, set it equal to two square, empty brackets like this:

<lsl>myList = [];</lsl>

== Strided lists ==

One common use of lists is to duplicate the functionality of structured collections of data (aka structs). Such collections, available in many programming languages, are absent from LSL.

In-world in SL, (still as of July 2008), a strided list is the closest you can get to storing limited amounts of data in some kind of structure that you can access and manipulate in a few, limited ways.

Strided lists allow you to store related data pieces grouped (aka "strided") in sets. You can determine how many pieces of data in each "grouping."

An example is best at this point. You might use a strided list to track the names, gender and rez dates of a group of avatars:

<lsl>list demographics = ["John Adams", "male", "2007-06-22", "Shirley Bassey", "female", "2005-11-02", "Matt Damon", "male", "2008-05-19"];</lsl>

This example has a stride of three, because each grouping (or stride) has three data elements. Index 0 ("John Adams") is the start of the first instance (because list counting starts a 0), index 3 ("Shirley Bassey") is the start of the second instance, and so on.

It is important that the pieces of information in each grouping are always entered in the same sequence for every instance of the grouping in the list! In the example above, this means that the name needs to be always the first of the three related elements. You should consider carefully the order in which you record information because the function to sort a list, [[llListSort]], will only sort on the first element of the instances. In other words, if the avatar's rez date were the most important attribute for your script, then you would need to record it first, and the name second. If you wish to be able to sort by avatar last name rather than first name, the name should be added to the list in Lastname FirstName format (avoiding a comma, though, of course, unless you wanted LastName and FirstName treated as separate elements in the list.)

To add another person to the above list, you would do this:

<lsl>demographics += ["Dorthy Lamour", "female", "2010-01-22"];</lsl>

You cannot do any kind of fancy data analysis or manipulation with strided lists, as you can in off-world databases or spreadsheets, but they can meet some limited, in-world needs, if you don't have the resources to tie-in off-world tools.

Here are the tools we do have for strided lists:

The following three (as of July 2008) native LSL functions can be used with strided lists:

*[[llList2ListStrided]]
*[[llListRandomize]]
*[[llListSort]]

Here are some additional, user-created functions for working with strided lists:

{|{{Prettytable}}
|+
|-{{Hl2}}
!function
!purpose
|-
|| [[ListStridedMove]] || Moves something in a strided list to another place in the strided list.
|-
|| [[ListStridedRemove]] || Removes part of a strided list.
|-
|| [[ListStridedUpdate]] || Updates part of a strided list.
|-
|}

== Extended List Operations ==

These functions have been created and contributed by LSL users to perform operations not covered by built-in LSL functions.

{|{{Prettytable}}
|+
|-{{Hl2}}
!function
!purpose
|-
|| [[ListCast]] || Processes a list so that its contents are of a single-type.
|-
|| [[ListCompare]] || Compares two lists for equality
|-
|| [[ListItemDelete]] || Removes one element from a list.
|-
|| [[ListToWholeNumbers]] || Given a list of floats, converts them all to whole numbers (aka integers.)
|-
|| [[ListXorY]] || Join two lists to make one new combined list, while also eliminating any resulting duplicates in the new list.
|-
|| [[ListXandY]] || This function examines two lists, and returns a new list composed of the elements that both lists have in common.
|-
|| [[ListXnotY]] || Show what x list has that y list is missing.
|-
|| [[ListXxorY]] || Returns a new list, composed of elements that were in either original script, but not both. Note: This is not the same as getting rid duplicates by preserving just one of each duplicated item. It goes further, and removes both items.
|-
|| [[ListXequY]] || Answers the question: is list X identical to list Y?
|-
|| [[ListXneqY]] || Answers the question: is list X different from list Y?
|-
|| [[ListItemReplace|Replace]] || Replaces a single occurrence of something in a list with something else that you specify.
|-
|| [[Library_Combined_Library#Replace_2|Replace All]] || Replaces all occurrences of 'from list' with those in 'to list' in 'src list'. Not as concise as the replace function above, but will handle multiple items at the same time.
|-
|| [[ListUnique ]] || Given a list of elements, returns a list of only the unique individual elements in that list.
|-
|| [[ccFixListDatatypes ]] || Walks a list, casts the elements to the appropriate types, and returns a fixed list. Useful for things like [[llSetPrimitiveParams]] when you've parsed your data out of a string.
|}

Category:LSL List

2009-08-08T14:28:31Z

Sebastean Steamweaver:

{{LSL Header|ml=*}}{{LSLC|}}{{LSLC|Types}}

A list is a special kind of data type which can contain zero or more elements.

Lists are signified by square brackets surrounding their elements; the elements inside are separated by commas.

Examples:
<lsl>[0,1,2,3,4]

["Yes","No","Perhaps"]</lsl>

(Note: to be clear for those who have other programming backgrounds, there are no arrays in LSL: only lists.)

'''Diverse Data Types'''

Not all elements in a list need to be the same type of element. In the same list, you can store strings, integers, floats, vectors, etc, right side by side.

Example:
//a list with an integer, a float, a string, and a vector.
<lsl>[1,14.154,"Isn't this fun?",<0,0,0>]</lsl>

However, a list may not contain another list (i.e. you can't nest them.)

<lsl>[1, "one", 2, "two"] + [3, "three"] returns [1, "one", 2, "two", 3, "three"]</lsl>
not
<lsl>[1, "one", 2, "two", [3, "three"]]</lsl>

When you add an element to a list, the list remembers automatically what data type the value was.

Generally, because you're the one adding something to a list, you know what datatype is in what place in the list, and you retrieve it out of the list with the appropriate llList2<type> function such as: [[llList2String]], [[llList2Vector]], etc. (more on this later.)

If for some reason, though, you need to test what data type an element is in a list, you can use the [[llGetListEntryType]] function.

Tip! When adding a [[float]] to a list, always add it with a decimal point (e.g 1.0 as opposed to 1) to ensure that it is preserved as a float.

List can be directly typecast into string
<lsl>default
{
touch_start(integer total_number)
{
list a = ["abc",1,2,3.14,<0,0,0>];
llOwnerSay((string)a); // outcome: abc123.140000<0.000000, 0.000000, 0.000000>
}
}</lsl>

'''Counting place in a list vs list length'''

It's important at the outset to note the following (which can trip up even experienced minds when they are battle-weary):

<lsl>["Yes","No","Perhaps"]</lsl>

The length of this list is 3, because it has 3 elements in it. The length of a list is returned by the [[llGetListLength]]() function:

<lsl>integer length = llGetListLength(mylist);</lsl>

BUT, counting to determine an element's place in its list (aka "indexing") starts at 0 -- NOT 1.

The position of "Yes" in the above list is 0, "No" is at position 1, and "Perhaps" is at position 2.

Consequently, if you have 7 elements in a list, the last item in the list will be at position 6.

Thus to retrieve the last element in a list, without having to know in advance what position it is at, you can just go:

<lsl>integer length = llGetListLength(mylist);
string item = llList2String(myList,length - 1);</lsl>

'''List Limits'''

While a script is running, a list can grow dynamically as large as needed, limited only by the amount of memory that is available in the script.

However, at compile (aka save) time, there is a 72 element limit to pre-defined lists hardcoded in the script. Such long, predefined lists are common, for example, when someone is offering the user a plethora of colour choices.

Tip! If you really need 72 or more such choices in a pre-defined list, just make 2 (or more) lists that don't upset the compiler, and join them together in state_entry() or wherever appropriate:

<lsl>biggerlist = biglist01 + biglist02;</lsl>

'''Adding an Element to a list'''

There are several ways used to append an element to an existing list:

# myList = '''['''new_item''']''' + myList; '''Best method for Mono-LSL'''
# myList = myList + [new_item];
# myList += [new_item];
# myList = (myList=[]) + myList + [new_item];
# myList = myList + new_item;
# myList += new_item;
# myList = (myList=[]) + myList + new_item; '''Best method for LSO-LSL'''

'''Notes'''
* As of 8/8/2009 Method 1 gives significant savings over any other method used in Mono-LSL.
** Note that appending the new_item '''without''' brackets '''negates''' any memory savings in Mono-LSL.
** Method 1 will consume more memory than other methods in LSO-LSL.
* As of 8/8/2009 Method 7 returns the best value for savings in LSO-LSL.
** Method 7 is better than Method 4 due to the fact that Method 7 takes up less script overhead.
** Method 7 test script compiled to have a start memory of 15878, while Method 4 compiled to have a start memory of 15871. As a result Method 7 had more free memory than Method 4 at the end of the test operation.
* Methods 2 & 3 compile to the same thing.
* Methods 5 & 6 compile to the same thing.
* Methods 5, 6 & 7 have a bytecode savings over methods 2, 3 & 4 respectively, though there is an LSO-LSL VM bug that causes the string & key typecasts to not stick properly: {{Jira|SVC-1710}}.
* Methods 4 & 7 can result in a considerable memory savings in LSO-LSL over methods 2, 3, 5 & 6 (it helps reduce heap fragmentation, which would otherwise result in unusable blocks of heap memory){{Footnote|This method was invented and popularized by {{User|Strife Onizuka}}|This method was invented and popularized by Strife Onizuka}}. In Mono-LSL it provides no significant memory advantage or disadvantage.
** Depending upon the situation (in LSO-LSL) this method may not provide any advantage what so ever. If in doubt profile the script with and without using this method.

'''Joining Lists (aka Concatenation)'''

Lists can be joined simply by using the + sign:

<lsl>newlist = list01 + list02;

newlist = list01 + ["red","brown",<0,0,0>];</lsl>

Note: The above example actually creates 3 lists in memory while the command runs, even though just one is returned. This can affect memory usage.

'''Clearing a List'''

To clear a list, set it equal to two square, empty brackets like this:

<lsl>myList = [];</lsl>

== Strided lists ==

One common use of lists is to duplicate the functionality of structured collections of data (aka structs). Such collections, available in many programming languages, are absent from LSL.

In-world in SL, (still as of July 2008), a strided list is the closest you can get to storing limited amounts of data in some kind of structure that you can access and manipulate in a few, limited ways.

Strided lists allow you to store related data pieces grouped (aka "strided") in sets. You can determine how many pieces of data in each "grouping."

An example is best at this point. You might use a strided list to track the names, gender and rez dates of a group of avatars:

<lsl>list demographics = ["John Adams", "male", "2007-06-22", "Shirley Bassey", "female", "2005-11-02", "Matt Damon", "male", "2008-05-19"];</lsl>

This example has a stride of three, because each grouping (or stride) has three data elements. Index 0 ("John Adams") is the start of the first instance (because list counting starts a 0), index 3 ("Shirley Bassey") is the start of the second instance, and so on.

It is important that the pieces of information in each grouping are always entered in the same sequence for every instance of the grouping in the list! In the example above, this means that the name needs to be always the first of the three related elements. You should consider carefully the order in which you record information because the function to sort a list, [[llListSort]], will only sort on the first element of the instances. In other words, if the avatar's rez date were the most important attribute for your script, then you would need to record it first, and the name second. If you wish to be able to sort by avatar last name rather than first name, the name should be added to the list in Lastname FirstName format (avoiding a comma, though, of course, unless you wanted LastName and FirstName treated as separate elements in the list.)

To add another person to the above list, you would do this:

<lsl>demographics += ["Dorthy Lamour", "female", "2010-01-22"];</lsl>

You cannot do any kind of fancy data analysis or manipulation with strided lists, as you can in off-world databases or spreadsheets, but they can meet some limited, in-world needs, if you don't have the resources to tie-in off-world tools.

Here are the tools we do have for strided lists:

The following three (as of July 2008) native LSL functions can be used with strided lists:

*[[llList2ListStrided]]
*[[llListRandomize]]
*[[llListSort]]

Here are some additional, user-created functions for working with strided lists:

{|{{Prettytable}}
|+
|-{{Hl2}}
!function
!purpose
|-
|| [[ListStridedMove]] || Moves something in a strided list to another place in the strided list.
|-
|| [[ListStridedRemove]] || Removes part of a strided list.
|-
|| [[ListStridedUpdate]] || Updates part of a strided list.
|-
|}

== Extended List Operations ==

These functions have been created and contributed by LSL users to perform operations not covered by built-in LSL functions.

{|{{Prettytable}}
|+
|-{{Hl2}}
!function
!purpose
|-
|| [[ListCast]] || Processes a list so that its contents are of a single-type.
|-
|| [[ListCompare]] || Compares two lists for equality
|-
|| [[ListItemDelete]] || Removes one element from a list.
|-
|| [[ListToWholeNumbers]] || Given a list of floats, converts them all to whole numbers (aka integers.)
|-
|| [[ListXorY]] || Join two lists to make one new combined list, while also eliminating any resulting duplicates in the new list.
|-
|| [[ListXandY]] || This function examines two lists, and returns a new list composed of the elements that both lists have in common.
|-
|| [[ListXnotY]] || Show what x list has that y list is missing.
|-
|| [[ListXxorY]] || Returns a new list, composed of elements that were in either original script, but not both. Note: This is not the same as getting rid duplicates by preserving just one of each duplicated item. It goes further, and removes both items.
|-
|| [[ListXequY]] || Answers the question: is list X identical to list Y?
|-
|| [[ListXneqY]] || Answers the question: is list X different from list Y?
|-
|| [[ListItemReplace|Replace]] || Replaces a single occurrence of something in a list with something else that you specify.
|-
|| [[Library_Combined_Library#Replace_2|Replace All]] || Replaces all occurrences of 'from list' with those in 'to list' in 'src list'. Not as concise as the replace function above, but will handle multiple items at the same time.
|-
|| [[ListUnique ]] || Given a list of elements, returns a list of only the unique individual elements in that list.
|-
|| [[ccFixListDatatypes ]] || Walks a list, casts the elements to the appropriate types, and returns a fixed list. Useful for things like [[llSetPrimitiveParams]] when you've parsed your data out of a string.
|}

User:Sebastean Steamweaver

2009-07-10T19:37:38Z

Sebastean Steamweaver: Created page with 'Horsie!'

Horsie!

Accessibility

2009-07-10T19:36:40Z

Sebastean Steamweaver: /* Public Issue Tracker issues focused on improving Accessibility */

{{Help|Viewer=*}}

{{vital-info|Info about available Resident-created tools to make Second Life easier for the disabled}}

This page was started to collect and share accessibility resources which make Second Life easier to use. If you spot something missing, please ''do'' add your knowledge so we can all benefit from connecting the pieces together.

== Background ==
Over time, Linden Lab has added accessibility features to Second Life. Allowing menus to be keyboard-driven, adding keyboard shortcuts, and the [[Dazzle]] UI revamp have been valuable changes on their own, but combined, have made substantial improvements to the inworld experience. There's still a lot that needs to be done.

As of 2008-06-25, Linden Lab doesn't have a point person dedicated to accessibility & disability (who would likely work with our Resident Experience Team on usability matters), but as we've continued to hire key personnel for needed specialties and should this change, you'll find the role listed on the [http://lindenlab.com/employment/positions Employment Position Listings] page.

In addition, we're reviewing better accessibility for our [http://secondlife.com/suport Support Portal]. Our internal project code is DEV-1458.

== Open source ==
Second Life's viewer is [[Open_Source_Portal|open source]], which means Residents are able to improve upon it and add user interface functionality, such as different input devices which make it easier to get around. An actual example of this was the patch for the [[SpaceNavigator]] 3D mouse, which was actually integrated into Linden Lab's main viewer.

'''Are there any open source viewers focused on accessibility? Put them here.'''

[http://www.textsl.org TextSL] is an open source interface allowing visually impaired to access Second life using a screen reader.

== Public Issue Tracker issues focused on improving Accessibility ==
The [http://wiki.secondlife.com/wiki/Issue_tracker Public Issue Tracker]) website (also known as Jira, Public Jira, or PJira), is a system that helps Linden Lab identify new features that the community of Second Life Residents feel are important. When you log on to PJira, you can vote for a specific feature request if you feel it is important. '''The more votes a particular feature request gets, the more Linden Lab will prioritize the request.'''

This section of the Accessibility wiki is for keeping track of specific feature requests in PJira that are focused on improving accessibility. Please feel free to add links to them so that folks can learn more and have the opportunity to cast their votes.

[http://jira.secondlife.com/browse/SVC-4515 SVC-4515]) Is a pJira proposing a new prim property be added for "annotation" on prims and objects. This would be made available to viewers centered on accessibility, and would be accompanied by a new function like llSetObjectName/Desc: llSetObjectAnnotation.

== Hearing-impaired ==
=== Event transcripts ===
Linden Lab provides text transcripts of events such as [[Podcast|our podcast interviews]] and even the [[SL5B#Event_Recordings|Second Life's 5th birthday keynotes]].

Residents seeking to do the same for their events can learn how to '''[[Voice recording|record voice chat]]'''. Then, if you don't have time to transcribe yourself, you can use the '''[http://mturk.com/ Amazon Mechanical Turk]''' to get an affordable transcription. If you find it confusing to set up tasks, there's also [http://castingwords.com CastingWords], which also uses MTurk as an intermediary.

== Visually-impaired ==
=== Text size too small? ===
You can enlarge this in a few ways:

* Edit menu > Preferences > General tab and increase UI Size.
* Also in the General tab, uncheck "Small Avatar Names" (to the right of "Show Names").
* In Preferences > Text Chat tab, set Chat Font Size to Large.

You can also [http://blip.tv/file/975451/ watch a video tutorial].

=== Voice chat ===
You may prefer to use voice chat if you find it difficult to continually read text chat. See these articles in our Knowledge Base:

* '''[http://support.secondlife.com/ics/support/default.asp?deptID=4417&task=knowledge&questionID=4536 Voice FAQ]'''
* '''[http://support.secondlife.com/ics/support/default.asp?deptID=4417&task=knowledge&questionID=4423 How to Use Voice]

We also have '''[[Video_Tutorials#VOICE_CHAT|VOICE CHAT video tutorials]]''' for your benefit.

== Mobility-impaired ==
This is an inspiring video featuring a man using brainwaves to control Second Life:

<videoflash>d55CJYtHKAI</videoflash>

You can also [http://jp.youtube.com/watch?v=YipEdFersgM see a similar video with Japanese text].

=== Alternative input options ===
Depending on your specific needs, a standard keyboard + mouse may not be the best. If possible, try before you buy, or acquire it from a place with a hassle-free return policy. In addition to the numerous [http://www.amazon.com/exec/obidos/search-handle-url/?index=blended&field-keywords=ergonomic%20keyboard ergonomic keyboards] out there, You may consider:

* '''[http://www.3dconnexion.com/3dmouse/spacenavigator.php 3Dconnexion alternative mice]''' - Including the SpaceNavigator which has become popular with Second Life. By using a limited range of motion, you can use the 6 axes to move your avatar, camera, and more.

* '''[http://www.frogpad.com/ Frogpad]''' - A unique form of ergonomic keyboard useful for those who've lost mobility in one hand.

* '''[http://www.wacom.com/index2.cfm Wacom tablet]''' - Uses a stylus as a mouse alternative and can be helpful for relieving wrist cramps/carpal tunnel problems. Wacom is among the more expensive graphics tablets, but also durable in quality.

* '''[http://www.microsoft.com/enable/training/windowsxp/mousekeys.aspx MouseKeys]''' - "Control the Mouse Pointer Using the Numeric Keypad"

* '''[http://www.nuance.com/naturallyspeaking/ Dragon Naturally Speaking]''' - Talk-to-write program. Typing words and sentences can be done in secondlife by talking in a microphone. A reasonably fast computer is recommended for doing this since, because like Second Life, Dragon is resources-heavy. If your performance is slow, try lowering your Second Life graphics settings to the minimum to cope with a slower computer. In several countries you can get compensation for buying the program/computer if you are disabled.

== Related resources ==
* '''[http://www.google.com/coop/cse?cx=001010425210852223575%3Ajldmgpuier0 Second Life Educators Discussion list search]''' - Try searching the archives for keywords like "[http://www.google.com/cse?cx=001010425210852223575%3Ajldmgpuier0&ie=UTF-8&q=accessibility&sa=Search accessibility]".

* '''[http://healthinfoisland.blogspot.com/ Health & Medicine in Second Life]''' - Learn more about HealthInfo island and visit their inworld Accessibility Center.
* '''[http://secondlifeaccessibility.edublogs.org/ Second Life Accessibility]''' - "All about accessibility and disability in Second Life virtual worlds."
* '''[http://twinx45.wordpress.com/ Second Life Accessibility]''' (a different blog with the same name) - Hasn't been updated since Nov. 2007, but has a selection of useful links on the right-hand side.
* '''[http://www.blindsecondlife.blogspot.com/ Second Life for the Visually Impaired]''' - Gareth White is "Analysing the accessibility of Second Life with respect to visual impairment."
* '''[http://www.virtualability.org/index.html VirtualAbility - Second Life help for disabled people]''' - A community dedicated to helping disabled people in secondlife."
* '''[http://www.handsfree3d.com/ Handsfree 3D]''' - "Controlling Virtual Worlds Without a Mouse or Keyboard"
* '''[[User_talk:Capstan_Clift|Advocacy Working Group]]''' - "Should a working group be formed to address accessibility in Second Life?"
* '''[http://textsl.org TextSL]''' - The University of Nevada in Reno developed a client for Second Life which allows visually impaired /blind users to access Second Life using a screen Reader.
* '''[[Helen_Keller_Day|Helen Keller Day in Second Life]]'''
* '''[http://delicious.com/secondlife/accessibility Pathfinder Linden's List of Second Life Accessibility Websites]'''
* '''[http://www.blinddeafawareness.pbworks.com BlindDeafAwareness Wiki]''' - Started 6/20/09 in anticipation of the Helen Keller day in Second Life on 6/27/09

=== Blog posts & media mentions ===
In reverse-chronological order.

* 2009-6-23 - '''[http://www.seeingwithsound.com/voice.exe See with your ears]''' - See things with your ears instead of your eyes!
* 2009-06-17 - '''[http://blogs.secondlife.com/community/community/education/blog/2009/06/17/beautiful-visions-beyond-sight-guide-dogs-and-helen-keller-day-in-second-life Beautiful Visions beyond Sight: Guide Dogs and Helen Keller Day in Second Life]''' - Pathfinder Linden's blog post.
* 2008-06-30 - '''[http://news.yahoo.com/s/afp/20080602/lf_afp/sciencelifestylejapantechnologyhealthinternet_080602161821 Paralysed man takes a walk in virtual world]''' - Brainwaves used to control Second Life.
* 2008-03-15 - '''"[http://www.afb.org/afbpress/pub.asp?DocID=aw090207 Exploring Methods of Accessing Virtual Worlds]''' - Techniques for enabling blind users in virtual worlds.
* 2007-12-07 - '''[http://www.youtube.com/watch?v=CBlaiBV_yJs wheeling in Second Life]''' - Video of "A person with cerebral palsy using second life with a headwand."
* 2007-07-28 - '''[http://secondedition.wordpress.com/2007/07/28/empowering-the-physically-challenged/ Empowering the physically challenged]''' - Blog post from Second Edition. SL resident Simon Walsh operates his in-world nightclub Wheelies.
* 2007-01-11 - '''[http://www.it-analysis.com/blogs/Abrahams_Accessibility/2007/1/second_life_open_source_accessible_.html Second Life open source accessible client]''' - Blog post from Abrahams Accessibility. Has ideas for open source devs to make SL more accessible.
* 2004-12-15 - '''[http://secondlife.blogs.com/nwn/2004/12/the_nine_souls_.html The Nine Souls of Wilde Cunningham]''' - Blog post from New World Notes. One of the classic stories of Second Life enabling self-expression for the disabled.

Accessibility

2009-07-10T19:35:52Z

Sebastean Steamweaver:

{{Help|Viewer=*}}

{{vital-info|Info about available Resident-created tools to make Second Life easier for the disabled}}

This page was started to collect and share accessibility resources which make Second Life easier to use. If you spot something missing, please ''do'' add your knowledge so we can all benefit from connecting the pieces together.

== Background ==
Over time, Linden Lab has added accessibility features to Second Life. Allowing menus to be keyboard-driven, adding keyboard shortcuts, and the [[Dazzle]] UI revamp have been valuable changes on their own, but combined, have made substantial improvements to the inworld experience. There's still a lot that needs to be done.

As of 2008-06-25, Linden Lab doesn't have a point person dedicated to accessibility & disability (who would likely work with our Resident Experience Team on usability matters), but as we've continued to hire key personnel for needed specialties and should this change, you'll find the role listed on the [http://lindenlab.com/employment/positions Employment Position Listings] page.

In addition, we're reviewing better accessibility for our [http://secondlife.com/suport Support Portal]. Our internal project code is DEV-1458.

== Open source ==
Second Life's viewer is [[Open_Source_Portal|open source]], which means Residents are able to improve upon it and add user interface functionality, such as different input devices which make it easier to get around. An actual example of this was the patch for the [[SpaceNavigator]] 3D mouse, which was actually integrated into Linden Lab's main viewer.

'''Are there any open source viewers focused on accessibility? Put them here.'''

[http://www.textsl.org TextSL] is an open source interface allowing visually impaired to access Second life using a screen reader.

== Public Issue Tracker issues focused on improving Accessibility ==
The [http://wiki.secondlife.com/wiki/Issue_tracker Public Issue Tracker]) website (also known as Jira, Public Jira, or PJira), is a system that helps Linden Lab identify new features that the community of Second Life Residents feel are important. When you log on to PJira, you can vote for a specific feature request if you feel it is important. '''The more votes a particular feature request gets, the more Linden Lab will prioritize the request.'''

This section of the Accessibility wiki is for keeping track of specific feature requests in PJira that are focused on improving accessibility. Please feel free to add links to them so that folks can learn more and have the opportunity to cast their votes.

[http://jira.secondlife.com/browse/SVC-4515] Is a pJira proposing a new prim property be added for "annotation" on prims and objects. This would be made available to viewers centered on accessibility, and would be accompanied by a new function like llSetObjectName/Desc: llSetObjectAnnotation.

== Hearing-impaired ==
=== Event transcripts ===
Linden Lab provides text transcripts of events such as [[Podcast|our podcast interviews]] and even the [[SL5B#Event_Recordings|Second Life's 5th birthday keynotes]].

Residents seeking to do the same for their events can learn how to '''[[Voice recording|record voice chat]]'''. Then, if you don't have time to transcribe yourself, you can use the '''[http://mturk.com/ Amazon Mechanical Turk]''' to get an affordable transcription. If you find it confusing to set up tasks, there's also [http://castingwords.com CastingWords], which also uses MTurk as an intermediary.

== Visually-impaired ==
=== Text size too small? ===
You can enlarge this in a few ways:

* Edit menu > Preferences > General tab and increase UI Size.
* Also in the General tab, uncheck "Small Avatar Names" (to the right of "Show Names").
* In Preferences > Text Chat tab, set Chat Font Size to Large.

You can also [http://blip.tv/file/975451/ watch a video tutorial].

=== Voice chat ===
You may prefer to use voice chat if you find it difficult to continually read text chat. See these articles in our Knowledge Base:

* '''[http://support.secondlife.com/ics/support/default.asp?deptID=4417&task=knowledge&questionID=4536 Voice FAQ]'''
* '''[http://support.secondlife.com/ics/support/default.asp?deptID=4417&task=knowledge&questionID=4423 How to Use Voice]

We also have '''[[Video_Tutorials#VOICE_CHAT|VOICE CHAT video tutorials]]''' for your benefit.

== Mobility-impaired ==
This is an inspiring video featuring a man using brainwaves to control Second Life:

<videoflash>d55CJYtHKAI</videoflash>

You can also [http://jp.youtube.com/watch?v=YipEdFersgM see a similar video with Japanese text].

=== Alternative input options ===
Depending on your specific needs, a standard keyboard + mouse may not be the best. If possible, try before you buy, or acquire it from a place with a hassle-free return policy. In addition to the numerous [http://www.amazon.com/exec/obidos/search-handle-url/?index=blended&field-keywords=ergonomic%20keyboard ergonomic keyboards] out there, You may consider:

* '''[http://www.3dconnexion.com/3dmouse/spacenavigator.php 3Dconnexion alternative mice]''' - Including the SpaceNavigator which has become popular with Second Life. By using a limited range of motion, you can use the 6 axes to move your avatar, camera, and more.

* '''[http://www.frogpad.com/ Frogpad]''' - A unique form of ergonomic keyboard useful for those who've lost mobility in one hand.

* '''[http://www.wacom.com/index2.cfm Wacom tablet]''' - Uses a stylus as a mouse alternative and can be helpful for relieving wrist cramps/carpal tunnel problems. Wacom is among the more expensive graphics tablets, but also durable in quality.

* '''[http://www.microsoft.com/enable/training/windowsxp/mousekeys.aspx MouseKeys]''' - "Control the Mouse Pointer Using the Numeric Keypad"

* '''[http://www.nuance.com/naturallyspeaking/ Dragon Naturally Speaking]''' - Talk-to-write program. Typing words and sentences can be done in secondlife by talking in a microphone. A reasonably fast computer is recommended for doing this since, because like Second Life, Dragon is resources-heavy. If your performance is slow, try lowering your Second Life graphics settings to the minimum to cope with a slower computer. In several countries you can get compensation for buying the program/computer if you are disabled.

== Related resources ==
* '''[http://www.google.com/coop/cse?cx=001010425210852223575%3Ajldmgpuier0 Second Life Educators Discussion list search]''' - Try searching the archives for keywords like "[http://www.google.com/cse?cx=001010425210852223575%3Ajldmgpuier0&ie=UTF-8&q=accessibility&sa=Search accessibility]".

* '''[http://healthinfoisland.blogspot.com/ Health & Medicine in Second Life]''' - Learn more about HealthInfo island and visit their inworld Accessibility Center.
* '''[http://secondlifeaccessibility.edublogs.org/ Second Life Accessibility]''' - "All about accessibility and disability in Second Life virtual worlds."
* '''[http://twinx45.wordpress.com/ Second Life Accessibility]''' (a different blog with the same name) - Hasn't been updated since Nov. 2007, but has a selection of useful links on the right-hand side.
* '''[http://www.blindsecondlife.blogspot.com/ Second Life for the Visually Impaired]''' - Gareth White is "Analysing the accessibility of Second Life with respect to visual impairment."
* '''[http://www.virtualability.org/index.html VirtualAbility - Second Life help for disabled people]''' - A community dedicated to helping disabled people in secondlife."
* '''[http://www.handsfree3d.com/ Handsfree 3D]''' - "Controlling Virtual Worlds Without a Mouse or Keyboard"
* '''[[User_talk:Capstan_Clift|Advocacy Working Group]]''' - "Should a working group be formed to address accessibility in Second Life?"
* '''[http://textsl.org TextSL]''' - The University of Nevada in Reno developed a client for Second Life which allows visually impaired /blind users to access Second Life using a screen Reader.
* '''[[Helen_Keller_Day|Helen Keller Day in Second Life]]'''
* '''[http://delicious.com/secondlife/accessibility Pathfinder Linden's List of Second Life Accessibility Websites]'''
* '''[http://www.blinddeafawareness.pbworks.com BlindDeafAwareness Wiki]''' - Started 6/20/09 in anticipation of the Helen Keller day in Second Life on 6/27/09

=== Blog posts & media mentions ===
In reverse-chronological order.

* 2009-6-23 - '''[http://www.seeingwithsound.com/voice.exe See with your ears]''' - See things with your ears instead of your eyes!
* 2009-06-17 - '''[http://blogs.secondlife.com/community/community/education/blog/2009/06/17/beautiful-visions-beyond-sight-guide-dogs-and-helen-keller-day-in-second-life Beautiful Visions beyond Sight: Guide Dogs and Helen Keller Day in Second Life]''' - Pathfinder Linden's blog post.
* 2008-06-30 - '''[http://news.yahoo.com/s/afp/20080602/lf_afp/sciencelifestylejapantechnologyhealthinternet_080602161821 Paralysed man takes a walk in virtual world]''' - Brainwaves used to control Second Life.
* 2008-03-15 - '''"[http://www.afb.org/afbpress/pub.asp?DocID=aw090207 Exploring Methods of Accessing Virtual Worlds]''' - Techniques for enabling blind users in virtual worlds.
* 2007-12-07 - '''[http://www.youtube.com/watch?v=CBlaiBV_yJs wheeling in Second Life]''' - Video of "A person with cerebral palsy using second life with a headwand."
* 2007-07-28 - '''[http://secondedition.wordpress.com/2007/07/28/empowering-the-physically-challenged/ Empowering the physically challenged]''' - Blog post from Second Edition. SL resident Simon Walsh operates his in-world nightclub Wheelies.
* 2007-01-11 - '''[http://www.it-analysis.com/blogs/Abrahams_Accessibility/2007/1/second_life_open_source_accessible_.html Second Life open source accessible client]''' - Blog post from Abrahams Accessibility. Has ideas for open source devs to make SL more accessible.
* 2004-12-15 - '''[http://secondlife.blogs.com/nwn/2004/12/the_nine_souls_.html The Nine Souls of Wilde Cunningham]''' - Blog post from New World Notes. One of the classic stories of Second Life enabling self-expression for the disabled.