/// <summary>
/// OK button click event
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void buttonOK_Click(object sender, EventArgs e)
{
DeleteLines();
if (!UpdateData(false))
{
return;
}
m_outputInfo.Clear();
m_stopWatch.Start();
Transaction transaction = new Transaction(m_doc, "RayTraceBounce");
transaction.Start();
m_LineCount = 0;
m_RayCount = 0;
// Start Find References By Direction
Autodesk.Revit.DB.XYZ startpt = m_origin;
m_outputInfo.Add("Start Find References By Direction: ");
for (int ctr = 1; ctr <= rayLimit; ctr++)
{
IList<ReferenceWithContext> references = m_doc.FindReferencesWithContextByDirection(startpt, m_direction, m_view);
m_rClosest = null;
FindClosestReference(references);
if (m_rClosest == null)
{
string info = "Ray " + ctr + " aborted. No closest face reference found. ";
m_outputInfo.Add(info);
if (ctr == 1)
{
MessageBox.Show(info);
}
break;
}
else
{
Reference reference = m_rClosest.GetReference();
Element referenceElement = m_doc.GetElement(reference);
GeometryObject referenceObject = referenceElement.GetGeometryObjectFromReference(reference);
Autodesk.Revit.DB.XYZ endpt = reference.GlobalPoint;
if (startpt.IsAlmostEqualTo(endpt))
{
m_outputInfo.Add("Start and end points are equal. Ray " + ctr + " aborted\n" + startpt.X + ", " + startpt.Y + ", " + startpt.Z);
break;
}
else
{
MakeLine(startpt, endpt, m_direction, "bounce");
m_RayCount = m_RayCount + 1;
string info = "Intersected Element Type: [" + referenceElement.GetType().ToString() + "] ElementId: [" + referenceElement.Id.IntegerValue.ToString();
m_face = referenceObject as Face;
if (m_face.MaterialElementId != ElementId.InvalidElementId)
{
Material materialElement = m_doc.get_Element(m_face.MaterialElementId) as Material;
info += "] Face MaterialElement Name: [" + materialElement.Name + "] Shininess: [" + materialElement.Shininess;
}
else
{
info += "] Face.MaterialElement is null [" + referenceElement.Category.Name;
}
info += "]";
m_outputInfo.Add(info);
Autodesk.Revit.DB.UV endptUV = reference.UVPoint;
Autodesk.Revit.DB.XYZ FaceNormal = m_face.ComputeDerivatives(endptUV).BasisZ; // face normal where ray hits
FaceNormal = m_rClosest.GetInstanceTransform().OfVector(FaceNormal); // transformation to get it in terms of document coordinates instead of the parent symbol
Autodesk.Revit.DB.XYZ directionMirrored = m_direction - 2 * m_direction.DotProduct(FaceNormal) * FaceNormal; //http://www.fvastro.org/presentations/ray_tracing.htm
m_direction = directionMirrored; // get ready to shoot the next ray
startpt = endpt;
}
}
}
transaction.Commit();
m_stopWatch.Stop();
TimeSpan ts = m_stopWatch.Elapsed;
string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}", ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds / 10);
m_outputInfo.Add(elapsedTime + "\n" + "Lines = " + m_LineCount + "\n" + "Rays = " + m_RayCount);
m_stopWatch.Reset();
OutputInformation();
}
/// <summary>
/// OK button click event
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void buttonOK_Click(object sender, EventArgs e)
{
DeleteLines();
if (!UpdateData(false))
{
return;
}
m_outputInfo.Clear();
m_stopWatch.Start();
Transaction transaction = new Transaction(m_doc, "RayTraceBounce");
transaction.Start();
m_LineCount = 0;
m_RayCount = 0;
// Start Find References By Direction
Autodesk.Revit.DB.XYZ startpt = m_origin;
m_outputInfo.Add("Start Find References By Direction: ");
for (int ctr = 1; ctr <= rayLimit; ctr++)
{
IList <ReferenceWithContext> references = m_doc.FindReferencesWithContextByDirection(startpt, m_direction, m_view);
m_rClosest = null;
FindClosestReference(references);
if (m_rClosest == null)
{
string info = "Ray " + ctr + " aborted. No closest face reference found. ";
m_outputInfo.Add(info);
if (ctr == 1)
{
MessageBox.Show(info);
}
break;
}
else
{
Reference reference = m_rClosest.GetReference();
Element referenceElement = m_doc.GetElement(reference);
GeometryObject referenceObject = referenceElement.GetGeometryObjectFromReference(reference);
Autodesk.Revit.DB.XYZ endpt = reference.GlobalPoint;
if (startpt.IsAlmostEqualTo(endpt))
{
m_outputInfo.Add("Start and end points are equal. Ray " + ctr + " aborted\n" + startpt.X + ", " + startpt.Y + ", " + startpt.Z);
break;
}
else
{
MakeLine(startpt, endpt, m_direction, "bounce");
m_RayCount = m_RayCount + 1;
string info = "Intersected Element Type: [" + referenceElement.GetType().ToString() + "] ElementId: [" + referenceElement.Id.IntegerValue.ToString();
m_face = referenceObject as Face;
if (m_face.MaterialElementId != ElementId.InvalidElementId)
{
Material materialElement = m_doc.get_Element(m_face.MaterialElementId) as Material;
info += "] Face MaterialElement Name: [" + materialElement.Name + "] Shininess: [" + materialElement.Shininess;
}
else
{
info += "] Face.MaterialElement is null [" + referenceElement.Category.Name;
}
info += "]";
m_outputInfo.Add(info);
Autodesk.Revit.DB.UV endptUV = reference.UVPoint;
Autodesk.Revit.DB.XYZ FaceNormal = m_face.ComputeDerivatives(endptUV).BasisZ; // face normal where ray hits
FaceNormal = m_rClosest.GetInstanceTransform().OfVector(FaceNormal); // transformation to get it in terms of document coordinates instead of the parent symbol
Autodesk.Revit.DB.XYZ directionMirrored = m_direction - 2 * m_direction.DotProduct(FaceNormal) * FaceNormal; //http://www.fvastro.org/presentations/ray_tracing.htm
m_direction = directionMirrored; // get ready to shoot the next ray
startpt = endpt;
}
}
}
transaction.Commit();
m_stopWatch.Stop();
TimeSpan ts = m_stopWatch.Elapsed;
string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}", ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds / 10);
m_outputInfo.Add(elapsedTime + "\n" + "Lines = " + m_LineCount + "\n" + "Rays = " + m_RayCount);
m_stopWatch.Reset();
OutputInformation();
}
/// <summary>
/// Find the first intersection with a face
/// </summary>
/// <param name="references"></param>
/// <returns></returns>
public Autodesk.Revit.DB.ReferenceWithContext FindClosestReference(IList<ReferenceWithContext> references)
{
double face_prox = Double.PositiveInfinity;
double edge_prox = Double.PositiveInfinity;
foreach (ReferenceWithContext r in references)
{
Reference reference = r.GetReference();
Element referenceElement = m_doc.GetElement(reference);
GeometryObject referenceGeometryObject = referenceElement.GetGeometryObjectFromReference(reference);
m_face = null;
m_face = referenceGeometryObject as Face;
Edge edge = null;
edge = referenceGeometryObject as Edge;
if (m_face != null)
{
if ((r.Proximity < face_prox)&& (r.Proximity > epsilon))
{
m_rClosest = r;
face_prox = Math.Abs(r.Proximity);
}
}
else if (edge != null)
{
if ((r.Proximity < edge_prox) && (r.Proximity > epsilon))
{
edge_prox = Math.Abs(r.Proximity);
}
}
}
if (edge_prox <= face_prox)
{
// stop bouncing if there is an edge at least as close as the nearest face - there is no single angle of reflection for a ray striking a line
m_outputInfo.Add("there is an edge at least as close as the nearest face - there is no single angle of reflection for a ray striking a line");
m_rClosest = null;
}
return m_rClosest;
}
