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- // Copyright (C) 1997-2002 Alias|Wavefront,
- // a division of Silicon Graphics Limited.
- //
- // The information in this file is provided for the exclusive use of the
- // licensees of Alias|Wavefront. Such users have the right to use, modify,
- // and incorporate this code into other products for purposes authorized
- // by the Alias|Wavefront license agreement, without fee.
- //
- // ALIAS|WAVEFRONT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- // INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- // EVENT SHALL ALIAS|WAVEFRONT BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- // CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
- // DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- // TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- // PERFORMANCE OF THIS SOFTWARE.
- //
- //
- // Alias|Wavefront Script File
- // MODIFY THIS AT YOUR OWN RISK
- //
- // Creation Date: Jan 12, 1998
- // Author: mgr
- //
- // Description:
- // The attachCurveLine() procedure takes the selected two curves and
- // creates a one span straight curve between them, using the end of curve1
- // and the start of curve2. The result will always be at least a degree
- // 3 curve. If you don't want to attach the curves then call this proc
- // with $doAttach = 0.
- //
- // Input Arguments:
- // $doAttach - if 1 attach results otherwise just create new curve
- //
- // Return Value:
- // String.
- //
-
- global proc string attachCurveLine( int $doAttach )
- {
- global int $gSelectNurbsCurvesBit;
- string $curvesList[] = `filterExpand -ex true -sm $gSelectNurbsCurvesBit`;
-
- int $numCurves = size($curvesList);
- if ( $numCurves < 2 )
- {
- error("Need to select two curves.");
- return "";
- }
-
- // get the last cv on the first curve and the first cv on the second curve
- //
- int $degree = eval("getAttr " + $curvesList[0] + ".degree");
- int $numSpans = eval("getAttr " + $curvesList[0] + ".spans");
- int $numCVs = $degree + $numSpans;
-
- int $lastCV = $numCVs - 1;
- float $cvCurve1[] = `getAttr ($curvesList[0] + ".cp[" + $lastCV + "]")`;
- float $cvCurve2[] = `getAttr ($curvesList[1] + ".cp[0]")`;
-
- // this is the vector between the two cvs
- //
- float $vector[3];
- $vector[0] = $cvCurve2[0] - $cvCurve1[0];
- $vector[1] = $cvCurve2[1] - $cvCurve1[1];
- $vector[2] = $cvCurve2[2] - $cvCurve1[2];
-
- // calculate two other cvs on the line between the end cvs
- //
- float $cvNew1[3];
- $cvNew1[0] = $cvCurve1[0] + ($vector[0] * 0.333);
- $cvNew1[1] = $cvCurve1[1] + ($vector[1] * 0.333);
- $cvNew1[2] = $cvCurve1[2] + ($vector[2] * 0.333);
- float $cvNew2[3];
- $cvNew2[0] = $cvCurve1[0] + ($vector[0] * 0.666);
- $cvNew2[1] = $cvCurve1[1] + ($vector[1] * 0.666);
- $cvNew2[2] = $cvCurve1[2] + ($vector[2] * 0.666);
-
- // create the degree 3 curve
- //
- string $resultCurve = eval("curve -p " + $cvCurve1[0] + " " + $cvCurve1[1] + " " + $cvCurve1[2] + " -p " + $cvNew1[0] + " " + $cvNew1[1] + " " + $cvNew1[2] + " -p " + $cvNew2[0] + " " + $cvNew2[1] + " " + $cvNew2[2] + " -p " + $cvCurve2[0] + " " + $cvCurve2[1] + " " + $cvCurve2[2] + " -k 0 -k 0 -k 0 -k 1 -k 1 -k 1");
-
- // attach all 3 curves if required
- //
- if ( $doAttach == 1 )
- {
- // attach curve1 to the new curve
- //
- string $attachedCurve[] = eval("attachCurve -ch 0 -rpo 0 -kmk 1 " + $curvesList[0] + " " + $resultCurve);
-
- // the straight curve is no longer needed
- //
- delete $resultCurve;
-
- // attach curve2 to the previously attached curves
- //
- $attachedCurve = eval("attachCurve -ch 0 -rpo 1 -kmk 1 " + $attachedCurve[0] + " " + $curvesList[1]);
- $resultCurve = $attachedCurve[0];
- }
-
- select -r $resultCurve;
- return $resultCurve;
- }
-