LlDetectedGrab

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函数名
Function: vector llDetectedGrab( integer number );
参数： 检测信息号的整数索引不支持负索引。
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 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. } } 示例2 /****** 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); } }

相关函数
llPassTouches

相关事件
touch_start touch touch_end