/// <summary>
/// This method constructs the winder corner and two straight runs.
/// Please be sure the input properties being set properly before calling this method.
/// </summary>
private void Construct()
{
//
// Construct the winder corner.
//
XYZ dir1 = (ControlPoints[1] - ControlPoints[0]).Normalize();
XYZ dir2 = (ControlPoints[2] - ControlPoints[1]).Normalize();
m_corner = new WinderSinglePoint(ControlPoints[1], dir1, dir2, NumStepsInCorner);
m_corner.Construct(RunWidth, CenterOffsetE, CenterOffsetF);
//
// Construct two straight runs to connect to the winder corner.
//
XYZ startPnt = m_corner.StartPoint - TreadDepth * NumStepsAtStart * dir1;
XYZ endPnt = m_corner.EndPoint + TreadDepth * NumStepsAtEnd * dir2;
XYZ bisectDir = (dir2 - dir1).Normalize();
XYZ perpendicularDir1 = new XYZ(-dir1.Y, dir1.X, 0);
XYZ perpendicularDir2 = new XYZ(-dir2.Y, dir2.X, 0);
if (bisectDir.DotProduct(perpendicularDir1) < 0)
{
perpendicularDir1 = perpendicularDir1.Negate();
perpendicularDir2 = perpendicularDir2.Negate();
}
m_straightAtStart = new WinderStraight(
startPnt, m_corner.StartPoint, perpendicularDir1, NumStepsAtStart);
m_straightAtEnd = new WinderStraight(
m_corner.EndPoint, endPnt, perpendicularDir2, NumStepsAtEnd);
}
/// <summary>
/// This method constructs two winder corners and three straight runs.
/// Please be sure the input properties being set properly before calling this method.
/// </summary>
private void Construct()
{
//
// Construct the first winder corner
//
XYZ dir1 = (ControlPoints[1] - ControlPoints[0]).Normalize();
XYZ dir2 = (ControlPoints[2] - ControlPoints[1]).Normalize();
m_corner1st = new WinderSinglePoint(ControlPoints[1], dir1, dir2, NumStepsInCorner1);
m_corner1st.Construct(RunWidth, CenterOffsetE1, CenterOffsetF1);
//
// Construct the second winder corner
//
XYZ dir3 = (ControlPoints[3] - ControlPoints[2]).Normalize();
m_corner2nd = new WinderSinglePoint(ControlPoints[1], dir2, dir3, NumStepsInCorner2);
m_corner2nd.Construct(RunWidth, CenterOffsetF2, CenterOffsetE2);
XYZ moveDelta = (m_corner1st.Distance2 + m_corner2nd.Distance1
+ TreadDepth * NumStepsInMiddle) * dir2;
m_corner2nd.Move(moveDelta);
//
// Construct the three straight runs
//
XYZ startPnt = m_corner1st.StartPoint - TreadDepth * NumStepsAtStart * dir1;
XYZ endPnt = m_corner2nd.EndPoint + TreadDepth * NumStepsAtEnd * dir3;
XYZ bisectDir = (dir2 - dir1).Normalize();
XYZ perpendicularDir1 = new XYZ(-dir1.Y, dir1.X, 0);
XYZ perpendicularDir2 = new XYZ(-dir2.Y, dir2.X, 0);
XYZ perpendicularDir3 = new XYZ(-dir3.Y, dir3.X, 0);
if (bisectDir.DotProduct(perpendicularDir1) < 0)
{
perpendicularDir1 = perpendicularDir1.Negate();
perpendicularDir2 = perpendicularDir2.Negate();
perpendicularDir3 = perpendicularDir3.Negate();
}
m_straightAtStart = new WinderStraight(
startPnt, m_corner1st.StartPoint, perpendicularDir1, NumStepsAtStart);
m_straightInMiddle = new WinderStraight(
m_corner1st.EndPoint, m_corner2nd.StartPoint, perpendicularDir2, NumStepsInMiddle);
m_straightAtEnd = new WinderStraight(
m_corner2nd.EndPoint, endPnt, perpendicularDir3, NumStepsAtEnd);
}