查看“LlDetectedGrab”的源代码

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


{{函数详情
|函数名 = Function: vector llDetectedGrab( integer number );
|参数= 参数： 检测信息号的整数索引不支持负索引。
|返回值= 返回值：返回一个向量，该向量是用户触摸对象的抓取偏移量;只在触摸事件中起作用。


|注意事项=
注意事项
*如果数字超出了界限，这个函数返回<0.0,0.0,0.0>，脚本继续执行，没有错误消息。
*启用lldetect *函数的事件总是返回至少一个检测到的项。
如果没有检测到任何东西，则不引发检测事件。
*检测事件的项检测参数最初不小于1。


|示例=
示例1
<pre>
default
{
    state_entry()
    {
        llSetStatus(PRIM_PHYSICS,TRUE);//This allows the object to be "grabbed" and dragged
    }
    touch(integer num_detected)
    {
        llSay(0,(string)llDetectedGrab(0));//Be prepared for a great amount of chatted info.
                                           //The faster you move the mouse while grabbing the object the greater the offset becomes.
                                           //This is not due to the speed but the reaction time of the turn around of the physical prim,
                                           //thus an offset (distance from grab to prim center) is created and measured by this function.
    }
}
</pre>

示例2
<pre>
/******
 
Simple llDetectedGrab illustration, rez a prim and add this script.
The prim will become a cone that follows mouse grabs.
 
 Click and hold the mouse button down on the object, then:
 - Drag left and right to move parallel to the camera focal plane.
 - Drag up and down to move to and from the camera.
 - Hold down Ctrl, then drag up and down to move vertically.
 
******/
 
default
{
    state_entry()
    {
        llMinEventDelay(0.25);
        llSetStatus(STATUS_PHYSICS, FALSE); // make the object static for simplicity
        llSetPrimitiveParams([
            PRIM_SIZE, <0.5, 0.5, 0.5>,
            PRIM_TYPE, PRIM_TYPE_CYLINDER, PRIM_HOLE_DEFAULT, <0.0, 1.0, 0.0>,
              0.0, ZERO_VECTOR, ZERO_VECTOR, ZERO_VECTOR
        ]); // a cone that can follow the mouse pointer
    }
 
    touch(integer total_number)
    {
        llLookAt(llGetPos() + llDetectedGrab(0), 1.0, 1.0);
    }
}
</pre>


|相关函数=
[[llPassTouches]]			


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

}}