private static void GenerateConvexPolygonTriIndices( LevelGeometryTesselator.Polygon poly, int[] indexMap, GroupListBuilder builder, GroupMaterial material )
{
GroupBuilder group = builder.GetGroup( material );
ICollection< int > indices = group.Indices;
int baseIndex = indexMap[ poly.Edges[0].StartIndex ];
for ( int index = 1; index < poly.Edges.Length - 1; ++index )
{
indices.Add( baseIndex );
indices.Add( indexMap[ poly.Edges[ index ].StartIndex ] );
indices.Add( indexMap[ poly.Edges[ index ].EndIndex ] );
}
}
/// <summary>
/// Builds runtime environment graphics from level geometry
/// </summary>
/// <param name="envGraphics">Environment graphics to build</param>
/// <param name="geometry">Level geometry</param>
/// <returns>Returns a new <see cref="IEnvironmentGraphics"/> object</returns>
public IEnvironmentGraphics Build( IEnvironmentGraphics envGraphics, LevelGeometry geometry )
{
// Create environment graphics
Csg2.Node root = Csg2.Build( geometry.ObstaclePolygons );
List< LevelGeometryTesselator.Polygon > floorPolys = new List< LevelGeometryTesselator.Polygon >( );
List< LevelGeometryTesselator.Polygon > obstaclePolys = new List< LevelGeometryTesselator.Polygon >( );
LevelGeometryTesselator tess = new LevelGeometryTesselator( );
LevelGeometryTesselator.Polygon poly = tess.CreateBoundingPolygon( -100, -100, 100, 100 );
LevelGeometryTesselator.AddPolygonDelegate addFloorPoly =
delegate( LevelGeometryTesselator.Polygon floorPoly, Csg2.Node node )
{
floorPolys.Add( floorPoly );
};
LevelGeometryTesselator.AddPolygonDelegate addObstaclePoly =
delegate( LevelGeometryTesselator.Polygon obstaclePoly, Csg2.Node node )
{
obstaclePolys.Add( obstaclePoly );
};
tess.BuildConvexRegions( root, poly, addFloorPoly, addObstaclePoly, true );
GroupListBuilder groupsBuilder = new GroupListBuilder( );
Point2[] flatPoints = tess.Points.ToArray( );
// // Get the texture source for the wall
// ITexture2d textureSource = node.Edge.WallData.Texture;
// ITechnique techniqueSource = node.Edge.WallData.Technique;
// GroupMaterial material = new GroupMaterial( techniqueSource, new ITexture2d[] { textureSource } );
// GroupBuilder group = builder.GetGroup( material );
StaticGeometryData defaultFloor = StaticGeometryData.CreateDefaultFloorData( );
StaticGeometryData defaultWall = StaticGeometryData.CreateDefaultWallData( );
GroupMaterial defaultFloorMaterial = new GroupMaterial
(
defaultFloor.Technique, new ITexture2d[] { defaultFloor.Texture }
);
GroupMaterial defaultWallMaterial = new GroupMaterial
(
defaultWall.Technique, new ITexture2d[] { defaultWall.Texture }
);
GroupMaterial defaultObstacleMaterial = new GroupMaterial
(
defaultFloor.Technique, new ITexture2d[] { defaultFloor.Texture }
);
int[] floorIndexMap = new int[ flatPoints.Length ];
int[] roofIndexMap = new int[ flatPoints.Length ];
for ( int index = 0; index < flatPoints.Length; ++index )
{
floorIndexMap[ index ] = -1;
roofIndexMap[ index ] = -1;
}
List< Vertex > vertices = new List< Vertex >( flatPoints.Length * 2 );
foreach ( LevelGeometryTesselator.Polygon floorPoly in floorPolys )
{
for ( int edgeIndex = 0; edgeIndex < floorPoly.Edges.Length; ++edgeIndex )
{
int pIndex = floorPoly.Edges[ edgeIndex ].StartIndex;
if ( floorIndexMap[ pIndex ] == -1 )
{
Point2 srcPt = flatPoints[ pIndex ];
floorIndexMap[ pIndex ] = AddVertex( vertices, FloorVertex( srcPt.X, 0, srcPt.Y ) );
}
}
GenerateConvexPolygonTriIndices( floorPoly, floorIndexMap, groupsBuilder, defaultFloorMaterial );
}
foreach ( LevelGeometryTesselator.Polygon obstaclePoly in obstaclePolys )
{
// Duplicate floor points at obstacle height, add wall polys
for ( int edgeIndex = 0; edgeIndex < obstaclePoly.Edges.Length; ++edgeIndex )
{
int pIndex = obstaclePoly.Edges[ edgeIndex ].StartIndex;
if ( roofIndexMap[ pIndex ] == -1 )
{
Point2 srcPt = flatPoints[ pIndex ];
roofIndexMap[ pIndex ] = AddVertex( vertices, FloorVertex( srcPt.X, 6, srcPt.Y ) );
}
}
// Generate wall polys
for ( int edgeIndex = 0; edgeIndex < obstaclePoly.Edges.Length; ++edgeIndex )
{
int pIndex = obstaclePoly.Edges[ edgeIndex ].StartIndex;
int nextPIndex = obstaclePoly.Edges[ edgeIndex ].EndIndex;
if ( ( floorIndexMap[ pIndex ] == -1 ) || ( floorIndexMap[ nextPIndex ] == -1 ) )
{
// No equivalent floor vertices - ignore
continue;
}
//if ( floorIndexMap[ pIndex ] == -1 )
//{
// floorIndexMap[ pIndex ] = AddVertex( vertices, FloorVertex( flatPoints[ pIndex ].X, 0, flatPoints[ pIndex ].Y ) );
//}
//if ( floorIndexMap[ nextPIndex ] == -1 )
//{
// floorIndexMap[ nextPIndex ] = AddVertex( vertices, FloorVertex( flatPoints[ nextPIndex ].X, 0, flatPoints[ nextPIndex ].Y ) );
//}
Point3 floor0Pt = vertices[ floorIndexMap[ pIndex ] ].m_Point;
Point3 floor1Pt = vertices[ floorIndexMap[ nextPIndex ] ].m_Point;
Point3 roof0Pt = vertices[ roofIndexMap[ pIndex ] ].m_Point;
Point3 roof1Pt = vertices[ roofIndexMap[ nextPIndex ] ].m_Point;
Vector3 dir = Vector3.Cross( floor1Pt - floor0Pt, floor0Pt - roof0Pt ).MakeNormal( );
// TODO: AP: Better texture coordinate generation
float texWidth = floor0Pt.DistanceTo( floor1Pt ) / 5.0f;
float texHeight = floor0Pt.DistanceTo( roof0Pt ) / 5.0f;
int floorP0 = AddVertex( vertices, new Vertex( floor0Pt, dir, new Point2( 0, 0 ) ) );
int floorP1 = AddVertex( vertices, new Vertex( floor1Pt, dir, new Point2( texWidth, 0 ) ) );
int roofP0 = AddVertex( vertices, new Vertex( roof0Pt, dir, new Point2( 0, texHeight ) ) );
int roofP1 = AddVertex( vertices, new Vertex( roof1Pt, dir, new Point2( texWidth, texHeight ) ) );
GroupBuilder group = groupsBuilder.GetGroup( defaultWallMaterial );
group.Indices.Add( floorP0 );
group.Indices.Add( floorP1 );
group.Indices.Add( roofP0 );
group.Indices.Add( floorP1 );
group.Indices.Add( roofP1 );
group.Indices.Add( roofP0 );
}
GenerateConvexPolygonTriIndices( obstaclePoly, roofIndexMap, groupsBuilder, defaultObstacleMaterial );
}
VertexBufferData buffer = VertexBufferData.FromVertexCollection( vertices );
EnvironmentGraphicsData.GridCell cell = new EnvironmentGraphicsData.GridCell( buffer );
foreach ( GroupBuilder group in groupsBuilder.Groups )
{
cell.Groups.Add( group.Create( ) );
}
EnvironmentGraphicsData data = new EnvironmentGraphicsData( 1, 1 );
data[ 0, 0 ] = cell;
envGraphics.Build( data );
return envGraphics;
/*
EnvironmentGraphicsData envGraphicsData = new EnvironmentGraphicsData( 1, 1 );
EnvironmentGraphicsData.GridCell levelCell = new EnvironmentGraphicsData.GridCell( );
EnvironmentGraphicsData.CellGeometryGroup[] groups = CreateGroups( geometry.Csg.Root );
levelCell.Groups.AddRange( groups );
envGraphicsData[ 0, 0 ] = levelCell;
envGraphics.Build( envGraphicsData );
return envGraphics;
/*
// Determine x/z bounds of the geometry
Rectangle levelBounds = GetLevelBounds( geometry.Csg.Root );
int xDivisions = ( int )( levelBounds.Width / m_ChopSize ) + 1;
int yDivisions = ( int )( levelBounds.Height / m_ChopSize ) + 1;
float y = levelBounds.Y;
TriBuilder builder = new TriBuilder( );
for ( int yDiv = 0; yDiv < yDivisions; ++yDiv, y += m_ChopSize )
{
float x = levelBounds.X;
for ( int xDiv = 0; xDiv < xDivisions; ++xDiv, x += m_ChopSize )
{
ClippetyClip( geometry.Csg.Root, x, y, x + m_ChopSize, y + m_ChopSize, builder );
}
}
return null;
*/
}