/// <summary>
/// Gets the horizontal plane length
/// </summary>
/// <param name="axisRange"></param>
/// <param name="origin"></param>
/// <returns></returns>
public double GetPlaneLength(NRange1DD axisRange, double origin, int originPoint, bool xOrZ)
{
NVector3DD vecA = GetVectorFromPoint(0);
NVector3DD vecB = GetVectorFromPoint(1);
NVector3DD lengthVector = new NVector3DD();
lengthVector.Subtract(ref vecB, ref vecA);
double orgPlaneLength = lengthVector.GetLength();
double sign;
if (originPoint == 0 || originPoint == 2)
{
// left point
if (xOrZ)
{
sign = vecA.X < vecB.X ? 1 : -1;
}
else
{
sign = vecA.Z < vecB.Z ? 1 : -1;
}
}
else
{
// right point
if (xOrZ)
{
sign = vecB.X < vecA.X ? 1 : -1;
}
else
{
sign = vecB.Z < vecA.Z ? 1 : -1;
}
}
axisRange.Normalize();
if (sign > 0)
{
if (origin + orgPlaneLength > axisRange.End)
{
orgPlaneLength = axisRange.End - origin;
}
}
else
{
if (origin - orgPlaneLength < axisRange.Begin)
{
orgPlaneLength = origin - axisRange.Begin;
}
}
return(orgPlaneLength * sign);
}
/// <summary>
/// Synchronizes the points so that they are coplanar
/// </summary>
/// <param name="modifiedPointIndex"></param>
public void SynchronizePoints(int modifiedPointIndex)
{
// then align points depending on which point is being dragged
NVector3DD vecA = GetVectorFromPoint(0);
NVector3DD vecB = GetVectorFromPoint(1);
NVector3DD vecC = GetVectorFromPoint(2);
NVector3DD vecD = GetVectorFromPoint(3);
switch (modifiedPointIndex)
{
case 0: // left top
// sync point 3 (left bottom)
{
NVector3DD vecCB = new NVector3DD();
vecCB.Subtract(ref vecC, ref vecB);
vecD.Add(ref vecA, ref vecCB);
SetVectorToPoint(3, vecD);
}
break;
case 1: // right top
{
// sync point 2 (right bottom)
NVector3DD vecDA = new NVector3DD();
vecDA.Subtract(ref vecD, ref vecA);
vecC.Add(ref vecB, ref vecDA);
SetVectorToPoint(2, vecC);
}
break;
case 2: // right bottom
{
// sync point 1 (right top)
NVector3DD vecAD = new NVector3DD();
vecAD.Subtract(ref vecA, ref vecD);
vecB.Add(ref vecC, ref vecAD);
SetVectorToPoint(1, vecB);
}
break;
case 3: // left bottom
{
// sync point 0 (left top)
NVector3DD vecCB = new NVector3DD();
vecCB.Subtract(ref vecB, ref vecC);
vecA.Add(ref vecD, ref vecCB);
SetVectorToPoint(0, vecA);
}
break;
}
// handle x / z locking
if (m_LockX)
{
double x = GetVectorFromPoint(modifiedPointIndex).X;
for (int i = 0; i < 4; i++)
{
if (i != modifiedPointIndex)
{
SetXPointCoordinate(i, x);
}
}
}
if (m_LockZ)
{
double z = GetVectorFromPoint(modifiedPointIndex).Z;
for (int i = 0; i < 4; i++)
{
if (i != modifiedPointIndex)
{
SetZPointCoordinate(i, z);
}
}
}
}