Difference between revisions of "LlDetectedTouchFace"

From Second Life Wiki
Jump to navigation Jump to search
m
m
 
(28 intermediate revisions by 9 users not shown)
Line 1: Line 1:
{{LSL_Function/negative_index|false|number|self=*}}{{LSL_Function
{{LSL_Function
|func_id
|inject-2={{LSL_Function/detected|index|touchFace|simple=*}}
|mode=request
|func_id=338|func_sleep=0.0|func_energy=10.0
|func_sleep=0.0
|func=llDetectedTouchFace
|func_energy=10.0
|return_type=integer|return_text=that is the index of the face the avatar clicked on.
|func=llDetectedFace
|p1_type=integer|p1_name=index
|sort=DetectedFace
|func_footnote=For the {{LSLGC|Touch|touch}} category of events only. The prim that was touched may not be the prim receiving the event, use [[llDetectedLinkNumber]] to check for this; likewise you can use [[llDetectedTouchFace]] to determine which face was touched.
|p1_type=integer|p1_name=number|p1_desc=touch index
|func_footnote=For the {{LSLGC|Touch|touch}} category of events only.
|func_desc
|func_desc
|return_text=that is the number of the face the avatar clicked on. If not supported by the event, returns -1
|return_type=integer
|spec
|spec
|caveats
|caveats=
|examples
*{{LSL Const|TOUCH_INVALID_FACE|integer|-1}} is returned when...
** The avatar's viewer does not support face touch detection.
** The touch has moved off the surface of the prim.
** The event triggered is not a {{LSLGC|Touch|touch}} event.
|examples=
<source lang="lsl2">
// This is the essential script to drop in a prim when you need to ascertain the number of a face (or faces)
// Touch the prim surfaces to learn their face numbers, which you can then use in other scripts for texturing, colouring etc.
 
say(string message)
{
    llSay(PUBLIC_CHANNEL, message);
}
 
default
{
    touch_start(integer num_detected)
    {
        integer face = llDetectedTouchFace(0);
 
        if (face == TOUCH_INVALID_FACE)
//      {
            say("The touched face could not be determined");
//      }
        else
//      {
            say("You touched face number " + (string) face);
//      }
    }
}
</source>
<source lang="lsl2">
default
{
    touch_start(integer num_detected)
    {
        integer link = llDetectedLinkNumber(0);
        integer face = llDetectedTouchFace(0);
 
        if (face == TOUCH_INVALID_FACE)
            llSay(PUBLIC_CHANNEL, "Sorry, your viewer doesn't support touched faces.");
        else
        {
            // store the original color
            list  colorParams  = llGetLinkPrimitiveParams(link, [PRIM_COLOR, face]);
            vector originalColor = llList2Vector(colorParams, 0);
 
            // color detected face white
            llSetLinkColor(link, <1.0, 1.0, 1.0>, face);
            llSleep(0.2);
 
            // color detected face black
            llSetLinkColor(link, ZERO_VECTOR, face);
            llSleep(0.2);
 
            // color detected face back to original color
            llSetLinkColor(link, originalColor, face);
        }
    }
}
</source>
|helpers
|helpers
|related
|related
|also_functions={{LSL DefineRow||[[llDetectedLinkNumber]]}}
|also_functions=
|also_events={{LSL DefineRow||[[touch_start]]|}}
{{LSL DefineRow||[[llDetectedLinkNumber]]}}
{{LSL DefineRow||[[llDetectedTouchST]]}}
{{LSL DefineRow||[[llDetectedTouchUV]]}}
{{LSL DefineRow||[[llDetectedTouchPos]]}}
{{LSL DefineRow||[[llDetectedTouchNormal]]}}
{{LSL DefineRow||[[llDetectedTouchBinormal]]}}
|also_events=
{{LSL DefineRow||[[touch_start]]|}}
{{LSL DefineRow||[[touch]]|}}
{{LSL DefineRow||[[touch]]|}}
{{LSL DefineRow||[[touch_end]]|}}
{{LSL DefineRow||[[touch_end]]|}}
|also_articles={{LSL DefineRow||{{LSLGC|Detected}}|}}
|also_articles
|notes=Should reduce prim-count for all button based gadgets. The data seems to be available anyway; it's used in the texture-selection mode of the object-"Edit"
|notes
 
|history=*Introduced in Viewer {{SVN|870|rev=92872|branch=Release|anchor=file14|date=Wednesday, 23 July 2008}}.
This feature request is posted on JIRA at {{Jira|SVC-519}}. Please go and vote for it if you want this issue implemented.
*Server support available in Second Life Server 1.24.7.98039, client support in Release Candidate viewer 1.21.4 (98167)
 
*Date of Release Server [[ Release_Notes/Second_Life_Beta_Server/1.24#Release_Notes_for_Second_Life_Beta_Server_1.24.3_.28August_29th.2C_2008.29 | 29-08-2008 ]]
See also {{Jira|SCV-574}} (deprecated) and {{Jira|SVC-1902}} (active) for related solutions.
*Date of Release Client  [[ Release_Notes/Second_Life_Release/1.21 | 16-10-2008 ]]
|cat1
|cat1=Touch
|cat2
|cat2=Face
|cat3
|cat4
}}
}}

Latest revision as of 00:58, 22 January 2015

Summary

Function: integer llDetectedTouchFace( integer index );

Returns an integer that is the index of the face the avatar clicked on.

• integer index – Index of detection information

index does not support negative indexes. For the touch category of events only. The prim that was touched may not be the prim receiving the event, use llDetectedLinkNumber to check for this; likewise you can use llDetectedTouchFace to determine which face was touched.

Caveats

  • If index is out of bounds the script continues to execute without an error message.
  • TOUCH_INVALID_FACE is returned when...
    • The avatar's viewer does not support face touch detection.
    • The touch has moved off the surface of the prim.
    • The event triggered is not a touch event.
All Issues ~ Search JIRA for related Bugs

Examples

// This is the essential script to drop in a prim when you need to ascertain the number of a face (or faces)
// Touch the prim surfaces to learn their face numbers, which you can then use in other scripts for texturing, colouring etc.

say(string message)
{
    llSay(PUBLIC_CHANNEL, message);
}

default
{
    touch_start(integer num_detected)
    {
        integer face = llDetectedTouchFace(0);

        if (face == TOUCH_INVALID_FACE)
//      {
            say("The touched face could not be determined");
//      }
        else
//      {
            say("You touched face number " + (string) face);
//      }
    }
}

default
{
    touch_start(integer num_detected)
    {
        integer link = llDetectedLinkNumber(0);
        integer face = llDetectedTouchFace(0);

        if (face == TOUCH_INVALID_FACE)
            llSay(PUBLIC_CHANNEL, "Sorry, your viewer doesn't support touched faces.");
        else
        {
            // store the original color
            list   colorParams   = llGetLinkPrimitiveParams(link, [PRIM_COLOR, face]);
            vector originalColor = llList2Vector(colorParams, 0);

            // color detected face white
            llSetLinkColor(link, <1.0, 1.0, 1.0>, face);
            llSleep(0.2);

            // color detected face black
            llSetLinkColor(link, ZERO_VECTOR, face);
            llSleep(0.2);

            // color detected face back to original color
            llSetLinkColor(link, originalColor, face);
        }
    }
}

See Also

Deep Notes

History

Search JIRA for related Issues

Signature

function integer llDetectedTouchFace( integer index );
Retrieved from "https://wiki.secondlife.com/w/index.php?title=LlDetectedTouchFace&oldid=1194094"