RE: does the clamp function in MEL have an equivalent in XSI expressions?

["Ian Stewart" <istewart(at)Softimage.COM>]

MIN(MAX( slider.kine.local.posy, 0 ),10)

-----Original Message-----
From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM]On Behalf Of javier
Posted At: October 4, 2005 12:06 PM
Posted To: xsi
Conversation: does the clamp function in MEL have an equivalent in XSI expressions?
Subject: Re: does the clamp function in MEL have an equivalent in XSI expressions?

/* 

10 minute clamp 
function for you 

copy this (straigten out the SiAddCustomparam lines, my 
mail chopped thiem in pieces)
into a function called Clamp.js
put that 
function in Plugins for user or wrokgroupd, restart xsi or update 
plugins
 and then you got your clamp

to see an example run the 
following lines, you will notice that i actually put a custom param for min and 
max so you can interactively modify it

NewScene()
CreatePrim("Cube", 
"MeshSurface", null, null);

posy = "cube.kine.local.posy"
minn = 
0
maxx = 10

Clamp (0,10,posy)
*/

function XSILoadPlugin( 
in_reg )
{
    in_reg.Author = 
"Javier";
    in_reg.Name = "Clamp";
    
in_reg.Email = "";
    in_reg.URL = "";
    
in_reg.Major = 1;
    in_reg.Minor = 0;
    
in_reg.RegisterCommand("Clamp","Clamp");
    return 
true;
}

function XSIUnloadPlugin( in_reg )
{
    
strPluginName = in_reg.Name;
    return 
true;
}

function Clamp_Init( ctxt )
{
    var 
oCmd;
    oCmd = ctxt.Source;
    
oCmd.Description = "";
    oCmd.ReturnValue = 
true;

    var oArgs;
    oArgs = 
oCmd.Arguments;
    
oArgs.Add("minval",siArgumentInput);
    
oArgs.Add("maxval",siArgumentInput);
    
oArgs.Add("param",siArgumentInput);
    return 
true;
}

function 
Clamp_Execute(minval,maxval,param)
{

        
var sOp = 
ClampOp_Update.toString();
        var 
posy = 
Dictionary.GetObject(param);
        
        if (!param){logmessage 
("parameter "+param+" is not a valid parameter 
,exiting",siError);}
        if 
(!minval){minval = 0;}
        if 
(!maxval){maxval = 0;}
        
        var c_out = 
XSIFactory.CreateActiveXObject("XSI.Collection");
        
c_out.add(param);
        var c_in = 
XSIFactory.CreateActiveXObject("XSI.Collection"); 
        
c_in.add(param)
    var opClamp = AddScriptedOp (c_out, sOp 
,c_in, "ClampOp", "Jscript",null);
        
           
SIAddCustomParameter(opClamp , "Clamp_Min", siDouble, minval, -1000000, 1000000, 
null, 5, Math.abs(10*minval)*-1, maxval, null, null);
    
SIAddCustomParameter(opClamp , "Clamp_Max", siDouble, maxval, -1000000, 1000000, 
null, 5, minval, Math.abs(10*maxval), null, 
null);
        
        return 
opClamp;

}

function 
ClampOp_Update(ctx,Out,In){

    var val = 
In.value;
        var max = 
ctx.Clamp_Max.value;
        var min = 
ctx.Clamp_Min.value;
        if (min > 
max){ctx.Clamp_Min.value = max;}
        
if (val > max){val = max;}
        if 
(val < min){val = min;}      
    
Out.Value = val;
}