// The default constructor must create a identity matrix.
public NativeMatrix44Adaptor()
{
m_Matrix2d = new NativeMatrix2dAdaptor(4, 4);
for (int row = 0; row < 4; row++)
for (int column = 0; column < 4; column++)
if (row == column)
m_Matrix2d[row, column] = 1;
else
m_Matrix2d[row, column] = 0;
}
public NativeMatrix2dAdaptor(NativeMatrix2dAdaptor src)
{
Debug.Assert(src != null);
m_IriduimMatrix = Matrix.Create(src.m_IriduimMatrix);
}
public NativeMatrix2dAdaptor RightUnite(NativeMatrix2dAdaptor B)
{
if (null == B) return null;
if (this.RowCount != B.RowCount) return null;
double[,] data = new double[this.RowCount
, this.ColumnCount + B.ColumnCount];
for (int row = 0; row < this.RowCount; row++)
for (int col = 0; col < this.ColumnCount; col++)
data[row, col] = this[row, col];
for (int row = 0; row < this.RowCount; row++)
for (int col = 0; col < B.ColumnCount; col++)
data[row, this.ColumnCount + col] = B[row, col];
NativeMatrix2dAdaptor C = new NativeMatrix2dAdaptor(data);
return C;
}
public void RightMutiply(NativeMatrix2dAdaptor rhs)
{
if (null == rhs) return;
NativeMatrix2dAdaptor newMatrix = this * rhs;
m_IriduimMatrix = new Matrix(newMatrix.m_IriduimMatrix);
}
public NativeMatrix2dAdaptor Clone()
{
NativeMatrix2dAdaptor NewMatrix = new NativeMatrix2dAdaptor(m_IriduimMatrix.Clone());
return NewMatrix;
}
private NativeMatrix44Adaptor(NativeMatrix2dAdaptor src)
{
Debug.Assert(src.RowCount == 4 && src.ColumnCount == 4);
if (src.RowCount == 4 && src.ColumnCount == 4)
m_Matrix2d = src;
}
protected override PointAdaptor OperatorMultiply(Matrix44Adaptor trans, PointAdaptor point)
{
Debug.Assert(point != null && trans != null);
if (null == point || null == trans) return null;
double[,] data = new double[4, 1];
data[0, 0] = point.X;
data[1, 0] = point.Y;
data[2, 0] = point.Z;
data[3, 0] = 1;
NativeMatrix44Adaptor nativeTrans = trans as NativeMatrix44Adaptor;
NativeMatrix2dAdaptor pointMatrix = new NativeMatrix2dAdaptor(data);
NativeMatrix2dAdaptor resulr = nativeTrans.GetNativeMatrix2dProxy() * pointMatrix;
resulr = resulr / resulr[3, 0];
return new NativePointAdaptor(resulr[0, 0], resulr[1, 0], resulr[2, 0]);
}
// Scale
public override Matrix44Adaptor SetScaling(double allScale, PointAdaptor basePoint)
{
Debug.Assert(allScale > 0 && basePoint != null);
if (!(allScale > 0 && basePoint != null)) return this;
PointAdaptor origin = new NativePointAdaptor(0,0,0);
if (basePoint.IsEqualTo(origin))
{
SetScaling(allScale);
}
else
{
// Transform the origin to the base point.
NativeMatrix44Adaptor T = NativeMatrix44Adaptor.Identity;
T.SetTranslation(origin - basePoint);
// zoom
NativeMatrix44Adaptor S = NativeMatrix44Adaptor.Identity;
S.SetScaling(allScale);
// Recover the coordinate of the base point
NativeMatrix44Adaptor T_1 = T.Inverse as NativeMatrix44Adaptor;
NativeMatrix44Adaptor R = (T_1 * S * T) as NativeMatrix44Adaptor;
m_Matrix2d = new NativeMatrix2dAdaptor(R.m_Matrix2d);
}
return this;
}
