Template:Needs Translation/
| 函数名
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| Function: vector llDetectedGrab( integer number );
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| 参数： integer number–Index of detection information number does not support negative indexes.
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| 返回值：Returns a vector that is the grab offset of the user touching the object; only works in the touch event.
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| 注意事项
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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]
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| 示例
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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);
}
}
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