LlDetectedGrab

Template:Needs Translation/

函数名
Function: vector llDetectedGrab( integer number );
参数： integer number–Index of detection information number does not support negative indexes.
返回值：Returns a vector that is the grab offset of the user touching the object; only works in the touch event.

注意事项
注意事项 If number is out of bounds this function returns <0.0, 0.0, 0.0> and the script continues to execute without an error message. Events that enable the llDetected* functions always return at least one detected item. Detection events are not raised if there is nothing detected.[1] The detection event's items detected parameter is initially never less than 1.[2]

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