| public CrossProduct ( Vector4 v ) : Vector4 | ||
| v | Vector4 | second vector |
| Результат | Vector4 | |
/// <summary>
/// Get a matrix which can transform points to 2D
/// </summary>
/// <returns>matrix which can transform points to 2D</returns>
public override Matrix4 GetTo2DMatrix()
{
//get transform used to transform points to plane whose normal is Zaxis of beam
Vector4 xAxis = new Vector4(m_data.HandOrientation);
xAxis.Normalize();
//Because Y axis in windows UI is downward, so we should Multiply(-1) here
Vector4 yAxis = new Vector4(m_data.FacingOrientation.Multiply(-1));
yAxis.Normalize();
Vector4 zAxis = yAxis.CrossProduct(xAxis);
zAxis.Normalize();
Vector4 vOrigin = new Vector4(m_points[0][0]);
Matrix4 result = new Matrix4(xAxis, yAxis, zAxis, vOrigin);
m_MatrixZaxis = result;
//get transform used to transform points to plane whose normal is Yaxis of beam
xAxis = new Vector4(m_data.HandOrientation);
xAxis.Normalize();
zAxis = new Vector4(m_data.FacingOrientation);
zAxis.Normalize();
yAxis = (xAxis.CrossProduct(zAxis)) * (-1);
yAxis.Normalize();
result = new Matrix4(xAxis, yAxis, zAxis, vOrigin);
m_MatrixYaxis = result;
return(m_MatrixZaxis);
}
/// <summary>
/// Get normal of face
/// </summary>
/// <param name="face">edges in a face</param>
/// <returns>vector stands for normal of the face</returns>
public Vector4 GetFaceNormal(List <Edge> face)
{
Edge eg0 = face[0];
Edge eg1 = face[1];
//get two lines from the face
List <XYZ> points = eg0.Tessellate() as List <XYZ>;
Autodesk.Revit.DB.XYZ start = points[0];
Autodesk.Revit.DB.XYZ end = points[1];
Vector4 vStart = new Vector4((float)start.X, (float)start.Y, (float)start.Z);
Vector4 vEnd = new Vector4((float)end.X, (float)end.Y, (float)end.Z);
Vector4 vSub = vEnd - vStart;
points = eg1.Tessellate() as List <XYZ>;
start = points[0];
end = points[1];
vStart = new Vector4((float)start.X, (float)start.Y, (float)start.Z);
vEnd = new Vector4((float)end.X, (float)end.Y, (float)end.Z);
Vector4 vSub2 = vEnd - vStart;
//get the normal with two lines got from face
Vector4 result = vSub.CrossProduct(vSub2);
result.Normalize();
return(result);
}
/// <summary>
/// Get points of first face
/// </summary>
/// <param name="faces">edges in all faces</param>
/// <returns>points of first face</returns>
public override List <List <XYZ> > GetNeedPoints(List <List <Edge> > faces)
{
List <Edge> needFace = new List <Edge>();
List <List <XYZ> > needPoints = new List <List <XYZ> >();
LocationCurve location = m_data.Location as LocationCurve;
Curve curve = location.Curve;
List <XYZ> xyzs = curve.Tessellate() as List <XYZ>;
Vector4 zAxis = new Vector4(0, 0, 1);
//if Location curve of wall is line, then return first face
if (xyzs.Count == 2)
{
needFace = faces[0];
}
//else we return the face whose normal is Z axis
foreach (List <Edge> face in faces)
{
foreach (Edge edge in face)
{
List <XYZ> edgexyzs = edge.Tessellate() as List <XYZ>;
if (xyzs.Count == edgexyzs.Count)
{
//get the normal of face
Vector4 normal = GetFaceNormal(face);
Vector4 cross = Vector4.CrossProduct(zAxis, normal);
cross.Normalize();
if (cross.Length() == 1)
{
needFace = face;
}
}
}
}
needFace = faces[0];
//get points array in edges
foreach (Edge edge in needFace)
{
List <XYZ> edgexyzs = edge.Tessellate() as List <XYZ>;
needPoints.Add(edgexyzs);
}
return(needPoints);
}
/// <summary>
/// Get a matrix which can transform points to 2D
/// </summary>
/// <returns>matrix which can transform points to 2D</returns>
public override Matrix4 GetTo2DMatrix()
{
//get the location curve
LocationCurve location = m_data.Location as LocationCurve;
Vector4 xAxis = new Vector4(1, 0, 0);
Vector4 yAxis = new Vector4(0, 1, 0);
Vector4 zAxis = new Vector4(0, 0, 1);
Vector4 origin = new Vector4(0, 0, 0);
if (location != null)
{
Curve curve = location.Curve;
if (!(curve is Autodesk.Revit.DB.Line))
{
throw new Exception("Opening cannot build on this Wall");
}
Autodesk.Revit.DB.XYZ start = curve.GetEndPoint(0);
Autodesk.Revit.DB.XYZ end = curve.GetEndPoint(1);
xAxis = new Vector4((float)(end.X - start.X),
(float)(end.Y - start.Y), (float)(end.Z - start.Z));
xAxis.Normalize();
//because in the windows UI, Y axis is downward
yAxis = new Vector4(0, 0, -1);
zAxis = Vector4.CrossProduct(xAxis, yAxis);
zAxis.Normalize();
origin = new Vector4((float)(end.X + start.X) / 2,
(float)(end.Y + start.Y) / 2, (float)(end.Z + start.Z) / 2);
}
return(new Matrix4(xAxis, yAxis, zAxis, origin));
}
/// <summary>
/// Get a matrix which can transform points to 2D
/// </summary>
/// <returns>matrix which can transform points to 2D</returns>
public override Matrix4 GetTo2DMatrix()
{
//get transform used to transform points to plane whose normal is Zaxis of beam
Vector4 xAxis = new Vector4(m_data.HandOrientation);
xAxis.Normalize();
//Because Y axis in windows UI is downward, so we should Multiply(-1) here
Vector4 yAxis = new Vector4(m_data.FacingOrientation.Multiply(-1));
yAxis.Normalize();
Vector4 zAxis = yAxis.CrossProduct(xAxis);
zAxis.Normalize();
Vector4 vOrigin = new Vector4(m_points[0][0]);
Matrix4 result = new Matrix4(xAxis, yAxis, zAxis, vOrigin);
m_MatrixZaxis = result;
//get transform used to transform points to plane whose normal is Yaxis of beam
xAxis = new Vector4(m_data.HandOrientation);
xAxis.Normalize();
zAxis = new Vector4(m_data.FacingOrientation);
zAxis.Normalize();
yAxis = (xAxis.CrossProduct(zAxis)) * (-1);
yAxis.Normalize();
result = new Matrix4(xAxis, yAxis, zAxis, vOrigin);
m_MatrixYaxis = result;
return m_MatrixZaxis;
}
