Witam,

czy w Mayi istnieje możliwość konwersji krawędzi wielokątu do krzywej?

Jest nawet do tego polecenie Modify/Convert/PolygonEdgesToCurve.

 

Ale ze czasem dziala to dosc dziwnie to lepiej uzyc takiego oto skryptu:

 

global proc string[] mm_curveFromEdges()

{

string $sel[] = `selectedNodes`;

if(size($sel)!=1)

error "Select some contiguous edges, on one poly object";

string $edges[] = `filterExpand -sm 32`;

int $len = size($edges);

if(!$len)

error "Select some contiguous edges";

string $infoVerts[];

string $fVerts[], $lVerts[];

int $position[], $sticks[], $firstHeadPos, $headsNr;

for($i=0; $i

{

$infoVerts = `polyInfo -ev $edges[$i]`;

$infoVerts = `stringToStringArray $infoVerts[0] " "`;

$fVerts[$i] = $infoVerts[2];

$lVerts[$i] = $infoVerts[3];

}

for($i=0; $i

{

$sticks[$i] = 0;

for($j=0; $j

{

if(($j!=$i))

{

if(($fVerts[$i]==$fVerts[$j]) || ($lVerts[$i]==$lVerts[$j]) || ($fVerts[$i]==$lVerts[$j]) || ($lVerts[$i]==$fVerts[$j]))

$sticks[$i]+=1;

}

}

if(($sticks[$i]2))

error "Select some contiguous edges";

}

$firstHeadPos = 0;

$headsNr = 0;

for($i=0; $i

{

if($sticks[$i] == 1)

{

$headsNr++;

if($headsNr>2)

error "Select some contiguous edges";

$firstHeadPos = $i;

}

}

int $orderedEdgesIDs[];

$orderedEdgesIDs[0] = $firstHeadPos;

int $currentEdgePos = $firstHeadPos;

int $jump = 0, $counter = 0, $max = size($edges)*size($edges);

while(size($orderedEdgesIDs)

{

for($i=0; $i

{

for($j=0; $j

if($orderedEdgesIDs[$j] == $i)

{

$jump = 1;

break;

}

if(!$jump)

{

if(($fVerts[$i]==$fVerts[$currentEdgePos]) || ($lVerts[$i]==$lVerts[$currentEdgePos]) || ($fVerts[$i]==$lVerts[$currentEdgePos]) || ($lVerts[$i]==$fVerts[$currentEdgePos]))

{

$currentEdgePos = $i;

$orderedEdgesIDs[size($orderedEdgesIDs)] = $i;

}

}

$jump = 0;

$counter++;

}

if($counter>=$max)

break;

}

int $forstOrLast = 0, $orderedVerts[], $oeLen = size($orderedEdgesIDs);

 

if(($fVerts[$orderedEdgesIDs[0]] == $fVerts[$orderedEdgesIDs[1]]) || ($fVerts[$orderedEdgesIDs[0]] == $lVerts[$orderedEdgesIDs[1]]))

$orderedVerts[0] = $lVerts[$orderedEdgesIDs[0]];

else if(($lVerts[$orderedEdgesIDs[0]] == $fVerts[$orderedEdgesIDs[1]]) || ($lVerts[$orderedEdgesIDs[0]] == $lVerts[$orderedEdgesIDs[1]]))

$orderedVerts[0] = $fVerts[$orderedEdgesIDs[0]];

 

for($i=0; $i

{

if(($fVerts[$orderedEdgesIDs[$i]] == $fVerts[$orderedEdgesIDs[$i+1]]) || ($fVerts[$orderedEdgesIDs[$i]] == $lVerts[$orderedEdgesIDs[$i+1]]))

$orderedVerts[size($orderedVerts)] = $fVerts[$orderedEdgesIDs[$i]];

else if(($lVerts[$orderedEdgesIDs[$i]] == $fVerts[$orderedEdgesIDs[$i+1]]) || ($lVerts[$orderedEdgesIDs[$i]] == $lVerts[$orderedEdgesIDs[$i+1]]))

$orderedVerts[size($orderedVerts)] = $lVerts[$orderedEdgesIDs[$i]];

}

int $ovLen = size($orderedVerts);

if($fVerts[$orderedEdgesIDs[$oeLen-1]] == $orderedVerts[$ovLen-1])

{

$orderedVerts[$ovLen] = $lVerts[$orderedEdgesIDs[$oeLen-1]];

$ovLen++;

}

else if($lVerts[$orderedEdgesIDs[$oeLen-1]] == $orderedVerts[$ovLen-1])

{

$orderedVerts[$ovLen] = $fVerts[$orderedEdgesIDs[$oeLen-1]];

$ovLen++;

}

string $ret[];

 

float $vertPos[] = `xform -a -ws -q -t ($sel[0]+".vtx["+$orderedVerts[0]+"]")`;

$curve = `curve -d 1 -p $vertPos[0] $vertPos[1] $vertPos[2]`;

if($orderedVerts[0] != $orderedVerts[$ovLen-1])

{

for($i=1; $i

{

$vertPos = `xform -a -ws -q -t ($sel[0]+".vtx["+$orderedVerts[$i]+"]")`;

curve -a -p $vertPos[0] $vertPos[1] $vertPos[2] $curve;

}

$ret[1] = "open";

}

else

{

for($i=1; $i

{

$vertPos = `xform -a -ws -q -t ($sel[0]+".vtx["+$orderedVerts[$i]+"]")`;

curve -a -p $vertPos[0] $vertPos[1] $vertPos[2] $curve;

}

closeCurve -ch 0 -ps 0 -rpo 1 -bb 0.5 -bki 0 -p 0.1 $curve;

$ret[1] = "closed";

}

$ret[0] = $curve;

return $ret;

}

 

global proc string mm_extractCurveFromEdges(int $degree)

{

string $curve[] = `mm_curveFromEdges`;

if($degree == 1)

{

select -r $curve[0];

return $curve[0];

}

else if($degree == 3)

{

if($curve[1] == "open")

rebuildCurve -ch 1 -rpo 1 -rt 0 -end 1 -kr 0 -kcp 1 -kep 1 -kt 0 -s 4 -d 3 -tol 0 $curve[0];

if($curve[1] == "closed")

{

closeCurve -ch 1 -ps 0 -rpo 1 -bb 0.5 -bki 0 -p 0.1 $curve[0];

rebuildCurve -ch 1 -rpo 1 -rt 0 -end 1 -kr 0 -kcp 1 -kep 1 -kt 0 -s 4 -d 3 -tol 0 $curve[0];

closeCurve -ch 1 -ps 0 -rpo 1 -bb 0.5 -bki 0 -p 0.1 $curve[0];

}

select -r $curve[0];

return $curve[0];

}

else

error ("Degree not suported: "+$degree+". Use only 1 or 3.");

}

//mm_extractCurveFromEdges 3;

 

global proc mm_extractCurveFromEdgesGUI()

{

if(`window -ex "mm_extCrvEdg_win"`)

deleteUI "mm_extCrvEdg_win";

window "mm_extCrvEdg_win";

columnLayout "mm_extCrvEdg_cLay1";

radioButtonGrp -nrb 2 -l "Degree" -l1 "Linear" -l2 "Cubic" -sl 2 -cw3 70 70 70 -p "mm_extCrvEdg_cLay1" "mm_extCrvEdg_rdb1";

rowLayout -nc 3 "mm_extCrvEdg_cLay1";

button -p "mm_extCrvEdg_cLay1" -l "Extract" -c "mm_extractCurveFromEdgesChooser `radioButtonGrp -q -sl \"mm_extCrvEdg_rdb1\"`; deleteUI \"mm_extCrvEdg_win\";" "mm_extCrvEdg_btn1";

button -p "mm_extCrvEdg_cLay1" -l "Apply" -c "mm_extractCurveFromEdgesChooser `radioButtonGrp -q -sl \"mm_extCrvEdg_rdb1\"`;" "mm_extCrvEdg_btn2";

button -p "mm_extCrvEdg_cLay1" -l "Close" -c "deleteUI \"mm_extCrvEdg_win\";" "mm_extCrvEdg_btn3";

window -e -wh 250 75 "mm_extCrvEdg_win";

showWindow "mm_extCrvEdg_win";

}

 

global proc mm_extractCurveFromEdgesChooser(int $degrSel)

{

switch($degrSel)

{

case 1:

mm_extractCurveFromEdges 1;

break;

case 2:

mm_extractCurveFromEdges 3;

break;

default:

}

}

mm_extractCurveFromEdgesGUI;

 

 

Pozdr.

Dzięki dzięki dzięki!