offsetCV.mel

//============================================
// offsetCV v2.0 (12/2002)
// by Edvard Toth 
// 
// The script is freeware. Non-commercial redistribution is permitted as long as this header remains included and unmodified.
// Your feedback is always appreciated - if you find the script useful or if you have questions, comments, suggestions, requests 
// or bug-reports please contact me at:
//
// http://www.edvardtoth.com
//
// Thanks to Alex Carbonero for the original code-snippet.
//============================================
// INSTALLATION: Copy the script into your Maya script-directory and start it with the offsetCV; command.
//
// COMPATIBILITY NOTE: Tested only with Maya4.0
//
// DESCRIPTION:
// The script places/spreads the CVs of a curve evenly along the Y axis.
// The placement of CVs can be determined by the OFFSET (the Y-distance between each CV) or the SPAN
// (the total Y-distance between the first and last CV of the curve). 
// The starting Y-position for the first CV can also be specified.
//
// (All values handled as negative/positive floating values with 4-digit precision.)
//
// Hint: useful for creating accurate roller-coaster or slide-like surfaces.
//

global proc offsetCV()
{

global string $CVwin = "offsetCV";
global string $offsetType;

   if (`window -ex $CVwin`) 
   {
      deleteUI $CVwin;
   }

window -t "offsetCV" -w 300 -h 100 -rtf 1 -s 1 -mnb 1 -mxb 0 $CVwin;
columnLayout -w 300 -adjustableColumn false -columnWidth 300 -columnAlign "center" -rowSpacing 2 -cat "both" 5 CVColumn;

separator -h 5 -st "none";

$offsetType = `radioButtonGrp -numberOfRadioButtons 2 -l "" -labelArray2 "Based On Offset" "Based On Span" -cw 1 50 -cw 2 110 -sl 1` ;

separator -h 5 -st "none";

floatFieldGrp -annotation "Starting Y-position for the first CV of the curve." -numberOfFields 1 -l "Starting Y-Position" -pre 4 -v1 0 Ypos;

separator -h 5 -st "none";

floatFieldGrp -annotation "The distance between each CV of the curve." -numberOfFields 1 -l "Y-Axis Offset" -pre 4 -v1 0 offset;
text -l "or";
floatFieldGrp -annotation "The total distance between the first and last CV of the curve." -numberOfFields 1 -l "Y-Axis Span" -pre 4 -v1 0 spread;

separator -h 5 -st "none";

button -label "Apply" -command "offsetProcess";

showWindow ; 
}

global proc offsetProcess()
{

global string $CVwin;
global string $offsetType;

global float $offsetA;
global float $spread;

global float $YposA;
global float $YposB;

$offsetA = `floatFieldGrp -q -v1 ($CVwin+"|CVColumn|offset")`;
$spread = `floatFieldGrp -q -v1 ($CVwin+"|CVColumn|spread")`;

$YposA = `floatFieldGrp -q -v1 ($CVwin+"|CVColumn|Ypos")`;
$YposB = `floatFieldGrp -q -v1 ($CVwin+"|CVColumn|Ypos")`;

int $Button = `radioButtonGrp -q -sl $offsetType`;


string $curvename[] = `ls -sl`;

int $i = 0;
	
if (objExists($curvename[0])&&(nodeType($curvename[0])=="transform"))
{
	select $curvename[0];

	int $degree = `getAttr ($curvename[0]+".degree")`;
	int $spans = `getAttr ($curvename[0]+".spans")`;

	int $CVs =  ($degree + $spans);
	float $offsetB = $spread / ($CVs-1); 

	for ($i = 0; $i<$CVs; $i++)
	{
		select ($curvename[0]+".cv["+$i+"]");

		float $xyz[] = `getAttr ($curvename[0]+".cv["+$i+"]")`;
    
		//MOVE BASED ON OFFSET
		if ($Button == 1)  
		{
		move -a -ws $xyz[0] $YposA $xyz[2] ;
		$YposA = ($offsetA + $YposA);
		}

		//MOVE BASED ON SPAN
		if ($Button == 2)
		{  
		move -a -ws $xyz[0] $YposB $xyz[2] ;
		$YposB = ($offsetB + $YposB);
		}
	}
return;
}
confirmDialog -m "Please select a curve." -b "Continue";
}