|
public static Multiply ( |
||
| left | left matrix | |
| right | right matrix | |
| return | ||
/// <summary>
/// calculate the matrix used to transform 2D to 3D
/// </summary>
/// <returns>maxtrix is use to transform 2d points to 3d</returns>
public Matrix4 Get2DTo3DMatrix()
{
Matrix4 matrix = Matrix4.Multiply(
new Matrix4(new Vector4(-192, -137, 0)), m_scaleMatrix.Inverse());
matrix = Matrix4.Multiply(matrix, m_moveToCenterMatrix);
return(Matrix4.Multiply(matrix, m_to2DMatrix));
}
/// <summary>
/// calculate the matrix used to transform 3D to 2D
/// </summary>
/// <returns>maxtrix is use to transform 3d points to 2d</returns>
public Matrix4 Get3DTo2DMatrix()
{
Matrix4 result = Matrix4.Multiply(
m_to2DMatrix.Inverse(), m_moveToCenterMatrix.Inverse());
result = Matrix4.Multiply(result, m_scaleMatrix);
return(Matrix4.Multiply(result, new Matrix4(new Vector4(192, 137, 0))));
}
/// <summary>
/// calculate the matrix used to transform 2d points (on pictureBox) to the plane of truss
/// which use to set profile
/// </summary>
/// <returns>maxtrix is use to transform 2d points to the plane of truss</returns>
public Matrix4 Get2DToTrussProfileMatrix()
{
Matrix4 matrix = Matrix4.Multiply(
new Matrix4(new Vector4(-192, -137, 0)), m_scaleMatrix.Inverse());
return(Matrix4.Multiply(matrix, m_moveToCenterMatrix));
////downward in picture box, so rotate upward here, y = -y
//Matrix4 upward = new Matrix4(new Vector4(new Autodesk.Revit.DB.XYZ (1, 0, 0)),
// new Vector4(new Autodesk.Revit.DB.XYZ (0, -1, 0)), new Vector4(new Autodesk.Revit.DB.XYZ (0, 0, 1)));
//return Matrix4.Multiply(matrix, upward);
}
