查看“LlDetectedTouchUV”的源代码

{{LSL Header|ml=*}}{{LSLC|Keywords}}{{LSLC|Flow Control}}{{LSLC|}}


{{函数详情
|函数名 = Function: vector llDetectedTouchUV( integer index );
|参数= 参数：integer index–Index of detection information index does not support negative indexes.
|返回值= 返回值：Returns a vector that is the texture coordinates for where the prim was touched. The x & y vector positions contain the horizontal (u) & vertical (v) texture coordinates respectively (<u, v, 0.0>). Like llDetectedTouchST, the interval of each component will be [0.0, 1.0] unless the texture repeats are set to a non-default value. Increasing or decreasing the texture repeats of the face will change this interval accordingly. Additionally, unlike with llDetectedTouchST, changing a texture's rotation will change the results of this function.


|注意事项=
注意事项
*If index is out of bounds the script continues to execute without an error message.
*TOUCH_INVALID_TEXCOORD is returned when...
**The avatar's viewer does not support face touch detection.
***To check if face touch detection is supported check the return of llDetectedTouchFace.
**The touch has moved off the surface of the prim.
**The touch happened too close to the edge of the face to determine a location.
**The event triggered is not a touch event.

|示例=
示例1
<pre>
default
{
    touch_start(integer total_number)
    {
        integer face = llDetectedTouchFace(0);
        vector  touchUV   = llDetectedTouchUV(0);
 
//      ZERO_VECTOR (<0.0, 0.0, 0.0> ... the origin) is in the bottom left corner of the texture
//      touchUV.x goes across the texture from left to right
//      touchUV.y goes up the texture from bottom to top
 
        if (face == TOUCH_INVALID_FACE)
            llWhisper(PUBLIC_CHANNEL, "Sorry, your viewer doesn't support touched faces.");
        else if (touchUV == TOUCH_INVALID_TEXCOORD)
            llWhisper(PUBLIC_CHANNEL, "Sorry, the touch position upon the texture could not be determined.");
        else
            llSay(PUBLIC_CHANNEL, "llDetectedTouchUV(" + (string)touchUV + ")"
                    + "\ntouchUV.x = " + (string)touchUV.x
                    + "\ntouchUV.y = " + (string)touchUV.y);
    }
}
</pre>

示例2
<pre>
integer numberOfRows    = 12;
integer numberOfColumns = 12;
 
default
{
    touch_start(integer num_detected)
    {
        vector touchUV = llDetectedTouchUV(0);
 
//      ZERO_VECTOR (<0.0, 0.0, 0.0> ... the origin) is in the bottom left corner of the texture
//      touchUV.x goes across the texture from left to right
//      touchUV.y goes up the texture from bottom to top
 
        integer columnIndex = (integer) (touchUV.x * numberOfColumns);
        integer rowIndex    = (integer) (touchUV.y * numberOfRows);
        integer cellIndex   = rowIndex * numberOfColumns + columnIndex;
 
        llSay(PUBLIC_CHANNEL, "UV grid (" + (string)columnIndex + ", " + (string)rowIndex + ") --> cell " + (string)cellIndex);
    }
}
</pre>


|相关函数=
[[llDetectedLinkNumber]]			
[[llDetectedTouchFace]]		
[[llDetectedTouchST]]		
[[llDetectedTouchPos]]			
[[llDetectedTouchNormal]]			
[[llDetectedTouchBinormal]]			


|相关事件=
[[touch_start]]	
[[touch]]	
[[touch_end]]			
}}