LlDetectedTouchST

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函数名
Function: vector llDetectedTouchST( integer index );
参数：integer index–Index of detection information index does not support negative indexes.
返回值：Returns a vector that is the surface coordinates for where the prim was touched. The x & y vector positions contain the horizontal (s) & vertical (t) face coordinates respectively (<s, t, 0.0>). Each component is usually in the interval [0.0, 1.0] with the origin in the bottom left corner.[1] With some mesh objects, values of less than 0.0 and higher than 1.0 have been observed.

注意事项

注意事项 If index is out of bounds the script continues to execute without an error message. TOUCH_INVALID_TEXCOORD is returned when... The avatar's viewer does not support face touch detection. To check if face touch detection is supported check the return of llDetectedTouchFace. The touch has moved off the surface of the prim. The touch happened too close to the edge of the face to determine a location. The event triggered is not a touch event.

示例

示例1 default { touch_start(integer total_number) { integer touchFace = llDetectedTouchFace(0); vector touchST = llDetectedTouchST(0); // ZERO_VECTOR (<0.0, 0.0, 0.0> ... the origin) is in the bottom left corner of the face // touchST.x goes across the face from the left to the right // touchST.y goes up the face from the bottom to the top if (touchFace == -1) llWhisper(PUBLIC_CHANNEL, "Sorry, your viewer doesn't support touched faces."); else if (touchST == TOUCH_INVALID_TEXCOORD) llWhisper(PUBLIC_CHANNEL, "Sorry, the touch position upon the face could not be determined."); else llSay(PUBLIC_CHANNEL, "llDetectedTouchST(0) = " + (string)touchST + "\ntouchST.x = " + (string)touchST.x + "\ntouchST.y = " + (string)touchST.y); } } 示例2 integer numberOfRows = 12; integer numberOfColumns = 12; default { touch_start(integer total_number) { vector touchST = llDetectedTouchST(0); // ZERO_VECTOR (<0.0, 0.0, 0.0> ... the origin) is in the bottom left corner of the face // touchST.x goes across the face from the left to the right // touchST.y goes up the face from the bottom to the top integer columnIndex = (integer) (touchST.x * numberOfColumns); integer rowIndex = (integer) (touchST.y * numberOfRows); integer cellIndex = (rowIndex * numberOfColumns) + columnIndex; llSay(PUBLIC_CHANNEL, "ST grid (" + (string)columnIndex + ", " + (string)rowIndex + ") --> cell " + (string)cellIndex); } } 示例3 // with friendly permission of Supremius Maximus // who made the texture used in this script // // click&hold the mouse while dragging across // the face of the prim default { touch(integer num_detected) { integer link = llDetectedLinkNumber(0); integer face = llDetectedTouchFace(0); vector touchST = llDetectedTouchST(0); // ZERO_VECTOR (<0.0, 0.0, 0.0> ... the origin) is in the bottom left corner of the face // touchST.x goes across the face from the left to the right // touchST.y goes across the face from the bottom to the top string uuid = "23badbe7-6d8c-639b-0131-bb321f8e9db5"; llSetLinkPrimitiveParamsFast(link, [ PRIM_TEXTURE, face, uuid, <1.0, 1.0, 0.0>, touchST, 0, PRIM_FULLBRIGHT, ALL_SIDES, TRUE]); } }

相关函数
llDetectedLinkNumber llDetectedTouchFace llDetectedTouchUV llDetectedTouchPos llDetectedTouchNormal llDetectedTouchBinormal

相关事件
touch_start touch touch_end