Coordinates on a prims face ?

[Jasmin Helstein]

Hello, does anyone know if there is a function that will return a number if I touch the face of a prim and that will vary depending on where on the face I touch it ? As if there is a grid on the prims face and the function will return the coordinates of "the point of touch" ? (or maybe a face just has a grid, I don't know)

Thanks

[steph Arnott]

"and that will vary depending on where on the face I touch it"

No, only the face can be detected. llDetectedTouchFace

I never heard of those functions. :smileysad:

 

[arton Rotaru]

You may want look into:

llDetectedTouchST()

llDetectedTouchUV()

llDetectedTouchPos()

as well.

 

 

 

 

[Dora Gustafson]

Yes we have llDetectedTouchST and llDetectedTouchUV

The first does what you ask, the latter returns coordinates in a texture

:smileysurprised::smileyvery-happy:

[Jasmin Helstein]

I was just hoping something like it existed. If I rez a cube for instance and want to sit on it I can determine on what side of the cube I am going to sit by clicking the top face somewhere near one of the edges. For that to work something must be detected. But that something is not available in LSL then ?   Pity ...

[steph Arnott]

No my fault, i was unaware of those functions others have listed, so follow there thread.

ADDED: A PM was sent to you in case you do not read the reply from others.

[Jasmin Helstein]

Wow ... two more responses in the same time I wrote mine !  And I thought i wrote so fast ... :smileyvery-happy:

I'm going to check these functions out.

thank you very much.

[Tenaar Feiri]

This should do what you want:

 

function:

integer whichButton (float x, float y){    integer xminx = 1;    integer xmaxx = 2;    integer yminy = 3;    integer ymaxy = 4;    integer i = 0;    integer b = (llGetListLength(buttons) / 5);    for(; i < b; i++)    {        float xmin = llList2Float(buttons, xminx);        float xmax = llList2Float(buttons, xmaxx);        float ymin = llList2Float(buttons, yminy);        float ymax = llList2Float(buttons, ymaxy);        if(x >= xmin && x <= xmax && y >= ymin && y <= ymax)        {            return (xminx - 1);        }        xminx += 5;        xmaxx += 5;        yminy += 5;        ymaxy += 5;    }    return -1;}

 

list:

list areas =    [   /*   area Name     x min    x max     y min   y max   */     /*0*/  "ar1",   0.232907, 0.770735, 0.049140, 0.211435, //1,2,3,4    /*5*/     "ar2",       0.232983, 0.791216, 0.238534, 0.406825, //6,7,8,9    /*10*/    "ar3",     0.212880, 0.791064, 0.497025, 0.593129, //11,12,13,14    /*15*/    "ar4",          0.232983, 0.791216, 0.614254, 0.779570, //16,17,18,19    /*20*/    "ar5",         0.232983, 0.791216, 0.803625, 0.965874 //21,22,23,24        ];

 

touch_start():

vector point = llDetectedTouchST(0);        integer which = whichButton(point.x, point.y);        if(which == -1)        {            return;        }                if(which == 0) // ar1        {// Your code here.}

 

 

All you need to do is find the face coordinates of where you're touching, then insert the values into the appropriate list entry to create a "grid" that, when that area is touched, returns a number.

whichButton() will always return numbers in increments of 5. So the grid set up with the coordinates of list entries 0 through 4, they will create an invisible "button" that when clicked, returns 0.

Then the subsequent five entries, 5 through 9, will create another "button" that when clicked, returns 5. And so on.

Here's the list again so it's easier to see what I mean.

 

list areas =    [   /*   area Name     x min    x max     y min   y max   */     /*0*/  "ar1",   0.232907, 0.770735, 0.049140, 0.211435, //1,2,3,4    /*5*/     "ar2",       0.232983, 0.791216, 0.238534, 0.406825, //6,7,8,9    /*10*/    "ar3",     0.212880, 0.791064, 0.497025, 0.593129, //11,12,13,14    /*15*/    "ar4",          0.232983, 0.791216, 0.614254, 0.779570, //16,17,18,19    /*20*/    "ar5",         0.232983, 0.791216, 0.803625, 0.965874 //21,22,23,24        ];

[Nova Convair]

This transfers the touch coordinates into a grid # starting with 1 in the top left corner.

integer grid_x = 4;integer grid_y = 3;integer GetButton (vector tpos) {    return llFloor(tpos.x*(float)grid_x) + (grid_y-1-llFloor(tpos.y*(float)grid_y)) * grid_x +1;}default{    state_entry()    {    }    touch_start(integer total_number)    {        llSay(0, (string)GetButton(llDetectedTouchST(0)));    }}