/// <summary>
/// Called when a edge list is finished
/// </summary>
protected override void OnFinished( Point3[] points, bool loop )
{
try
{
LevelGeometry level = LevelGeometry.FromCurrentScene( );
Point2[] points2 = new Point2[ points.Length ];
for ( int ptIndex = 0; ptIndex < points.Length; ++ptIndex )
{
points2[ ptIndex ] = new Point2( points[ ptIndex ].X, points[ ptIndex ].Z );
}
UiPolygon brush = new UiPolygon( "", points2 );
level.Add( brush, false, false );
AppLog.Info( "Combined brush with current level geometry" );
}
catch ( Exception ex )
{
AppLog.Exception( ex, "Failed to combine brush with current level geometry" );
ErrorMessageBox.Show( Resources.FailedToCombineCsgBrush );
}
}
/// <summary>
/// Builds a BSP tree from a CSG brush
/// </summary>
private static BspNode Build( UiPolygon brush, bool reverse )
{
Point2[] points = brush.Points;
if ( reverse )
{
Array.Reverse( points );
}
// Create edges
List< Edge > sourceEdges = new List< Edge >( points.Length );
for ( int ptIndex = 0; ptIndex < points.Length; ++ptIndex )
{
Edge edge = new Edge( points[ ptIndex ], points[ ( ptIndex + 1 ) % points.Length ] );
sourceEdges.Add( edge );
}
// Build the BSP tree from the edge list
BspNode node = BuildNode( null, sourceEdges );
return node;
}
/// <summary>
/// Combines a brush with the current geometry set
/// </summary>
/// <param name="op">CSG operation</param>
/// <param name="brush">Brush to add to the level geometry</param>
/// <exception cref="InvalidOperationException">Thrown by convex region builder if BSP tree is internally invalid</exception>
public void Combine( Operation op, UiPolygon brush )
{
BspNode brushBsp = Build( brush, op == Operation.Complement );
BspNode newRoot = null;
if ( m_Root == null )
{
if ( op == Operation.Union || op == Operation.EdgeUnion )
{
newRoot = brushBsp;
}
}
else
{
newRoot = Combine( op, m_Root, brushBsp );
}
if ( newRoot != null )
{
FixUpDoubleSidedNodes( newRoot );
BuildConvexRegions( newRoot );
m_Root = newRoot;
}
if ( GeometryChanged != null )
{
GeometryChanged( this, null );
}
}
private void AddCircleToLevelGeometry( LevelGeometry geometry )
{
try
{
Point2[] points2 = new Point2[ EdgeCount ];
float angle = m_AngleStart;
float angleIncrement = Constants.TwoPi / EdgeCount;
for ( int ptIndex = 0; ptIndex < EdgeCount; ++ptIndex )
{
float x = m_CentrePoint.X + Functions.Sin( angle ) * m_Radius;
float y = m_CentrePoint.Z + Functions.Cos( angle ) * m_Radius;
points2[ ptIndex ] = new Point2( x, y );
angle += angleIncrement;
if ( angle > Constants.TwoPi )
{
angle -= Constants.TwoPi;
}
}
UiPolygon brush = new UiPolygon( "", points2 );
geometry.Add( brush, false, false );
AppLog.Info( "Combined brush with current level geometry" );
}
catch ( Exception ex )
{
AppLog.Exception( ex, "Failed to combine circle brush with current level geometry" );
ErrorMessageBox.Show( Resources.FailedToCombineCsgBrush );
}
m_DefiningRadius = false;
}