public void DrawGrid( Camera camera )
{
//Update renderVertices buffer
if( renderVertices.Count == 0 )
{
renderVertices.Capacity = ( mapSize.X + 1 ) * ( mapSize.Y + 1 );
if( renderFreeIndices.Capacity < renderVertices.Capacity * 6 )
renderFreeIndices.Capacity = renderVertices.Capacity * 6;
if( renderBusyIndices.Capacity < renderVertices.Capacity * 6 )
renderBusyIndices.Capacity = renderVertices.Capacity * 6;
for( int y = 0; y < mapSize.Y + 1; y++ )
{
for( int x = 0; x < mapSize.X + 1; x++ )
{
Vec2 p = mapMotionPosition + new Vec2( x, y ) * GridCellSize;
renderVertices.Add( new Vec3( p.X, p.Y, GetMotionMapHeight( p ) ) );
}
}
}
renderFreeIndices.Clear();
renderBusyIndices.Clear();
{
const int tileSize = 10;
//set color for lines
camera.DebugGeometry.Color = new ColorValue( 1, 1, 0, .7f );
//tiles loop
for( int tileY = 0; tileY < mapSize.Y; tileY += tileSize )
{
for( int tileX = 0; tileX < mapSize.X; tileX += tileSize )
{
//get tile bounds
Rect bounds2 = mapMotionPosition + new Rect(
new Vec2( tileX * GridCellSize, tileY * GridCellSize ),
new Vec2( ( tileX + tileSize ) * GridCellSize, ( tileY + tileSize ) * GridCellSize ) );
Bounds worldBounds = Map.Instance.SceneGraph.GetOctreeBoundsWithBoundsOfObjectsOutsideOctree();
Bounds bounds = new Bounds(
bounds2.Minimum.X, bounds2.Minimum.Y, worldBounds.Minimum.Z,
bounds2.Maximum.X, bounds2.Maximum.Y, worldBounds.Maximum.Z );
//check tile visibility
if( !camera.IsIntersectsFast( bounds ) )
continue;
//check by distance
{
float distance = bounds.GetPointDistance( camera.Position );
if( distance > drawGridDistance )
continue;
}
//loop in tile
for( int y = tileY; y < tileY + tileSize && y < mapSize.Y; y++ )
{
for( int x = tileX; x < tileX + tileSize && x < mapSize.X; x++ )
{
int p0 = ( mapSize.X + 1 ) * y + x;
int p1 = p0 + 1;
int p2 = p0 + mapSize.X + 1;
int p3 = p2 + 1;
//draw lines
Vec3 offset = new Vec3( 0, 0, .4f );
//camera.DebugGeometry.Color = new ColorValue( 1, 1, 0 );
camera.DebugGeometry.AddLine( renderVertices[ p0 ] + offset, renderVertices[ p1 ] + offset );
camera.DebugGeometry.AddLine( renderVertices[ p0 ] + offset, renderVertices[ p2 ] + offset );
//add grid buffers
List<int> list = IsFreeInMapMotion( new Vec2I( x, y ) ) ? renderFreeIndices : renderBusyIndices;
list.Add( p0 );
list.Add( p1 );
list.Add( p2 );
list.Add( p2 );
list.Add( p1 );
list.Add( p3 );
}
}
}
}
}
//draw grids
camera.DebugGeometry.Color = new ColorValue( 0, 1, 0, .3f );
camera.DebugGeometry.AddVertexIndexBuffer( renderVertices, renderFreeIndices,
Mat4.FromTranslate( new Vec3( 0, 0, .2f ) ), false, true );
camera.DebugGeometry.Color = new ColorValue( 1, 0, 0, .3f );
camera.DebugGeometry.AddVertexIndexBuffer( renderVertices, renderBusyIndices,
Mat4.FromTranslate( new Vec3( 0, 0, .2f ) ), false, true );
}