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：整数索引—检测信息索引不支持负索引。
|返回值= 返回值：返回一个矢量，该矢量是prim被触摸的地方的纹理坐标。x和y矢量位置分别包含水平(u)和垂直(v)纹理坐标(<u, v, 0.0>)。与llDetectedTouchST类似，除非纹理重复被设置为非默认值，否则每个组件的间隔将为[0.0,1.0]。增加或减少面部重复的纹理将相应地改变这个间隔。此外，与llDetectedTouchST不同的是，改变纹理的旋转会改变这个函数的结果。

|注意事项=
注意事项
*如果索引超出界限，脚本将继续执行，不会出现错误消息。
*TOUCH_INVALID_TEXCOORD在…
**头像查看器不支持面部触摸检测。
***检查是否支持face touch检测，检查llDetectedTouchFace返回。
**触摸已经离开了表面的prim。
**触摸太靠近脸的边缘，无法确定位置。
**触发的事件不是触摸事件。

|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]]			
}}