/// <summary>
/// Picking a geometry in the scene with the near and far vector
/// </summary>
public void PerformPicking(MouseEventArgs e)
{
//Get the line
Vector3 near, far;
GenerateLine(e.X, e.Y, out near, out far);
//Do picking
float distance = 0.0f;
int index = 0;
GEMSSingleRender pickedSingle = null;
foreach (GEMSSingleRender render in singleRenders)
{
// Retrieve intersection information
IntersectInformation closestIntersection;
bool intersects = render.Intersect(near, far, out closestIntersection);
if (intersects)
{
if (index == 0)
{
distance = closestIntersection.Dist;
pickedSingle = render;
}
else
{
if (distance > closestIntersection.Dist)
{
distance = closestIntersection.Dist;
pickedSingle = render;
}
}
index++;
}
}
if (pickedSingle != null)
{
m_project.CurrentSelectedObject = pickedSingle.Source;
}
else
{
m_project.CurrentSelectedObject = null;
}
}
private void UpdateSingleRenders(GEMSProject.DataChangedEventArgs e)
{
if (e.changedSingle is GEMSSingle)
{
GEMSSingle changedSingle = e.changedSingle as GEMSSingle;
switch (e.changedType)
{
case GEMSProject.DataChangedEventArgs.DataChangeType.SingleCutted:
case GEMSProject.DataChangedEventArgs.DataChangeType.SingleDeleted:
{
//Delete one single painter
GEMSSingleRender targetSingleRender = null;
foreach (GEMSSingleRender singleRender in singleRenders)
{
if (singleRender.Source == changedSingle)
{
targetSingleRender = singleRender;
}
}
this.singleRenders.Remove(targetSingleRender);
targetSingleRender.Dispose( );
}
break;
case GEMSProject.DataChangedEventArgs.DataChangeType.SinglePasted:
case GEMSProject.DataChangedEventArgs.DataChangeType.SingleCreated:
//Create one single painter
{
GEMSSingleRender newSingleRender = new GEMSSingleRender(d3d, changedSingle, this);
newSingleRender.Initialize( );
this.singleRenders.Add(newSingleRender);
}
break;
}
}
//Re-generate bounding box
GenerateBoundingBox( );
if (currentMode == SceneMode.Preview)
{
isFit = true;
}
}
/// <summary>
/// Create single painters for each single object
/// </summary>
private void CreateSingleRenders( )
{
foreach (GEMSSingleRender singleRender in singleRenders)
{
singleRender.Dispose( );
}
singleRenders.Clear( );
if (m_project != null && m_project.Singles != null)
{
foreach (GEMSSingle single in m_project.Singles)
{
GEMSSingleRender render = new GEMSSingleRender(d3d, single, this);
render.Initialize( );
singleRenders.Add(render);
}
GenerateBoundingBox( );
}
}