Difference between revisions of "Category:LSL Vector"
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Kireji Haiku (talk | contribs) m (→Useful Snippets: 0 > FALSE) |
Lady Sumoku (talk | contribs) m (Replaced old <LSL> block with <source lang="lsl2">) |
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Each element can be accessed individually by appending .x, .y, or .z to the variable name. | Each element can be accessed individually by appending .x, .y, or .z to the variable name. | ||
< | <source lang="lsl2">vector vec; | ||
float x = vec.x; | float x = vec.x; | ||
float y = vec.y; | float y = vec.y; | ||
float z = vec.z;</ | float z = vec.z;</source> | ||
===Uses=== | ===Uses=== | ||
| Line 28: | Line 28: | ||
===Example=== | ===Example=== | ||
< | <source lang="lsl2">vector test=<1.0, 2.0, 3.0>; | ||
llOwnerSay((string)test.z); // Outputs 3.0</ | llOwnerSay((string)test.z); // Outputs 3.0</source> | ||
===Useful Snippets=== | ===Useful Snippets=== | ||
< | <source lang="lsl2">integer IsVector(string s) | ||
{ | { | ||
list split = llParseString2List(s, [" "], ["<", ">", ","]); | list split = llParseString2List(s, [" "], ["<", ">", ","]); | ||
| Line 42: | Line 42: | ||
//if the vector was already broken then the sign flip will have no affect and the values will match | //if the vector was already broken then the sign flip will have no affect and the values will match | ||
//we cast back to string so we can catch negative zero which allows for support of ZERO_VECTOR | //we cast back to string so we can catch negative zero which allows for support of ZERO_VECTOR | ||
}//Strife Onizuka</ | }//Strife Onizuka</source> | ||
Revision as of 03:09, 22 January 2015
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Vector
A vector is a data type that contains a set of three float values.
Components
Each element can be accessed individually by appending .x, .y, or .z to the variable name.
vector vec;
float x = vec.x;
float y = vec.y;
float z = vec.z;
Uses
Vectors can be used to hold the following:
- Position: x, y and z are in metres.
- Velocity: x, y and z represent speeds.
- Colour: Red is x, Green is y and Blue is z.
Operators
Vectors support the following operations:
- Addition, Operator "+"
- Subtraction, Operator "-"
- Multiplication (Dot Product), Operator "*"
- Cross Product, Operator "%"
A vector can be multiplied or divided by a Quaternion to rotate it.
Example
vector test=<1.0, 2.0, 3.0>;
llOwnerSay((string)test.z); // Outputs 3.0
Useful Snippets
integer IsVector(string s)
{
list split = llParseString2List(s, [" "], ["<", ">", ","]);
if(llGetListLength(split) != 7)//we must check the list length, or the next test won't work properly.
return FALSE;
return !((string)((vector)s) == (string)((vector)((string)llListInsertList(split, ["-"], 5))));
//it works by trying to flip the sign on the Z element of the vector,
//if it works or breaks the vector then the values won't match.
//if the vector was already broken then the sign flip will have no affect and the values will match
//we cast back to string so we can catch negative zero which allows for support of ZERO_VECTOR
}//Strife Onizuka
Subcategories
This category has the following 2 subcategories, out of 2 total.
Pages in category "LSL Vector"
The following 6 pages are in this category, out of 6 total.