/// <summary>
/// Initializes a new instance of Surface.
/// </summary>
public Surface( Renderer renderer, string materialName, Size size )
{
this.renderer = renderer;
this.materialName = materialName;
this.size = size;
quad = Mesh.Rectangle( renderer, Color.White, size.Width, size.Height );
}
/// <summary>
/// Initializes a new instance of Surface.
/// </summary>
public Surface( Renderer renderer, string materialName, Size size,
float textureMapTiling)
{
this.renderer = renderer;
this.materialName = materialName;
this.size = size;
quad = Mesh.Rectangle( renderer, Color.Black, size.Width, size.Height, textureMapTiling );
}
/// <summary>
/// Initializes the BloomPostProcessor.
/// </summary>
public BloomPostProcessor( Renderer renderer )
{
if ( renderer == null )
throw new ArgumentNullException( "renderer", "Can't create the BloomPostProcessor with a "
+ "null Renderer reference." );
this.renderer = renderer;
brightPassTex = new Texture( renderer, renderer.FullscreenSize.Width / 2,
renderer.FullscreenSize.Height / 2, true );
blurHorizontalTex = new Texture( renderer, renderer.FullscreenSize.Width / 2,
renderer.FullscreenSize.Height / 2, true );
blurVerticalTex = new Texture( renderer, renderer.FullscreenSize.Width / 2,
renderer.FullscreenSize.Height / 2, true );
finalBloomImage = new Texture( renderer, renderer.FullscreenSize.Width,
renderer.FullscreenSize.Height, true );
fullscreenQuad = Mesh.Rectangle( renderer, Color.Black, renderer.FullscreenSize.Width,
renderer.FullscreenSize.Height );
bloomEffect = GlobalResourceCache.CreateEffectFromFile( renderer,
@".\\FXFiles\\Bloom.fx" );
}
/// <summary>
/// Determines if two static (non-moving) meshes interpenetrate.
/// </summary>
/// <param name="other">The mesh to test for intersection against.</param>
/// <param name="worldMat1">The world transform matrix for this mesh.</param>
/// <param name="worldMat2">The world transform matrix for 'other'.</param>
/// <returns>A boolean value indicating whether interpenetration occurs.</returns>
public bool Intersects( Mesh other, Matrix worldMat1, Matrix worldMat2 )
{
for ( int vertexIndex = 0; vertexIndex < numVertices; ++vertexIndex )
{
Vector2 vertex = Vector2.TransformCoordinate( GetVertexPosition( vertexIndex ), worldMat1 );
int numAwayFacingEdges = 0;
for ( int edgeIndex = 0; edgeIndex < other.NumEdges; ++edgeIndex )
{
Edge edge = other.GetEdge( edgeIndex );
Vector2 edgeCenter =
( Vector2.TransformCoordinate( edge.Vertex1Pos, worldMat2 ) +
Vector2.TransformCoordinate( edge.Vertex2Pos, worldMat2 ) ) * 0.5f;
Vector2 vertexDir = edgeCenter - vertex;
// If the edge faces away from the vertex
if ( Vector2.Dot( vertexDir, edge.Normal ) >= 0.0f )
++numAwayFacingEdges;
}
if ( numAwayFacingEdges == other.NumEdges )
return true;
}
for ( int vertexIndex = 0; vertexIndex < other.NumVertices; ++vertexIndex )
{
Vector2 vertex = Vector2.TransformCoordinate( other.GetVertexPosition( vertexIndex ), worldMat2 );
int numAwayFacingEdges = 0;
for ( int edgeIndex = 0; edgeIndex < NumEdges; ++edgeIndex )
{
Edge edge = GetEdge( edgeIndex );
Vector2 edgeCenter =
( Vector2.TransformCoordinate( edge.Vertex1Pos, worldMat1 ) +
Vector2.TransformCoordinate( edge.Vertex2Pos, worldMat1 ) ) * 0.5f;
Vector2 vertexDir = edgeCenter - vertex;
// If the edge faces away from the vertex
if ( Vector2.Dot( vertexDir, edge.Normal ) >= 0.0f )
++numAwayFacingEdges;
}
if ( numAwayFacingEdges == NumEdges )
return true;
}
return false;
}
/// <summary>
/// Builds a rectangular mesh, centered around the origin.
/// </summary>
public static Mesh Rectangle( Renderer renderer, Color color, float width, float height,
float textureMapTiling)
{
Mesh rectMesh = new Mesh( renderer, 4, 2 );
rectMesh.AddVertex( 0, new Vector3( -width / 2, height / 2, 1.0f ), color,
new Vector2( 0.0f, 0.0f ) );
rectMesh.AddVertex( 1, new Vector3( width / 2, height / 2, 1.0f ), color,
new Vector2( textureMapTiling, 0.0f ) );
rectMesh.AddVertex( 2, new Vector3( width / 2, -height / 2, 1.0f ), color,
new Vector2( textureMapTiling, textureMapTiling ) );
rectMesh.AddVertex( 3, new Vector3( -width / 2, -height / 2, 1.0f ), color,
new Vector2( 0.0f, textureMapTiling ) );
rectMesh.AddTriangle( 0, 0, 1, 2 );
rectMesh.AddTriangle( 1, 0, 2, 3 );
return rectMesh;
}
/// <summary>
/// Builds a circular mesh centered around the origin.
/// </summary>
public static Mesh Circle( Renderer renderer, Color color, float radius,
int numSubdivisions, float textureMapTiling)
{
Mesh circleMesh = new Mesh( renderer, numSubdivisions, numSubdivisions - 2 );
float angleStep = ( 2 * ( float )Math.PI ) / numSubdivisions;
for ( int i = 0; i < numSubdivisions; ++i )
{
Vector2 texCoords = textureMapTiling * ( new Vector2(
( float )Math.Cos( angleStep * i ) / 2.0f + 0.5f,
1.0f - ( ( float )Math.Sin( angleStep * i ) / 2.0f + 0.5f ) ) );
circleMesh.AddVertex( i, new Vector3( radius * ( float )Math.Cos( angleStep * i ),
radius * ( float )Math.Sin( angleStep * i ), 1.0f ), color, texCoords );
}
for ( int i = 2, count = 0; i < numSubdivisions - 1; ++i, ++count )
{
circleMesh.AddTriangle( count, 0, i, i - 1 );
}
circleMesh.AddTriangle( numSubdivisions - 3, 0, numSubdivisions - 2, numSubdivisions - 1 );
return circleMesh;
}
public static void GenerateShadow( Mesh polygonGeometry, Matrix worldMatrix, Vector2 lightPosWS,
float zValue, Vector2 shadowCasterCenter)
{
Vector3 UVOffset = new Vector3( 0.0f, -0.5f, 0.0f );
// Transform the light position into model space
Vector2 lightPos = Vector2.TransformCoordinate( lightPosWS, Matrix.Invert( worldMatrix ) );
List<Edge> contourEdges = new List<Edge>();
for ( int edgeIndex = 0; edgeIndex < polygonGeometry.NumEdges; ++edgeIndex )
{
Edge edge = polygonGeometry.GetEdge( edgeIndex );
Vector2 edgeCenter = ( edge.Vertex1Pos + edge.Vertex2Pos ) * 0.5f;
Vector2 incidentLightDir = edgeCenter - lightPos;
// If the edge faces away from the light source
if ( Vector2.Dot( incidentLightDir, edge.Normal ) >= 0.0f )
{
contourEdges.Add( edge );
}
}
if ( contourEdges.Count < 1 || contourEdges.Count == polygonGeometry.NumEdges )
{
return;
}
const float ExtrudeMagnitude = 1280;
Shadow shadow = new Shadow();
Vector3 lightPosVec3 = new Vector3( lightPos.X, lightPos.Y, zValue );
lightPosVec3.TransformCoordinate( worldMatrix );
int quadIndex = 0;
foreach ( Edge edge in contourEdges )
{
Vector3 vertex1 = new Vector3(
edge.Vertex1Pos.X, edge.Vertex1Pos.Y, zValue );
Vector3 vertex2 = new Vector3(
edge.Vertex2Pos.X, edge.Vertex2Pos.Y, zValue );
// Transform the position data from model space to world space
vertex1.TransformCoordinate( worldMatrix );
vertex2.TransformCoordinate( worldMatrix );
Quad quad = new Quad();
Color shadowColor = Color.FromArgb( 1, 0, 0, 0 );
quad.Vertices[ 2 * quadIndex + 0 ].Position = vertex1 + UVOffset -
18.0f * Vector3.Normalize( vertex1 - lightPosVec3 );
quad.Vertices[ 2 * quadIndex + 0 ].Color = shadowColor.ToArgb();
quad.Vertices[ 2 * quadIndex + 1 ].Position = vertex1 + ExtrudeMagnitude * ( vertex1 - lightPosVec3 )
+ UVOffset;
quad.Vertices[ 2 * quadIndex + 1 ].Color = shadowColor.ToArgb();
quad.Vertices[ 2 * quadIndex + 2 ].Position = vertex2 + UVOffset -
18.0f * Vector3.Normalize( vertex2 - lightPosVec3 );
quad.Vertices[ 2 * quadIndex + 2 ].Color = shadowColor.ToArgb();
quad.Vertices[ 2 * quadIndex + 3 ].Position = vertex2 + ExtrudeMagnitude * ( vertex2 - lightPosVec3 )
+ UVOffset;
quad.Vertices[ 2 * quadIndex + 3 ].Color = shadowColor.ToArgb();
shadow.Quads.Add( quad );
}
shadows.Add( shadow );
}
public static void Initialize( Renderer renderer )
{
ShadowManager.renderer = renderer;
blur = config.GetSetting<float>( "ShadowBlur" );
shadowTex = new Texture( renderer, renderer.FullscreenSize.Width / 2,
renderer.FullscreenSize.Height / 2, true );
blurHorizontalTex = new Texture( renderer, renderer.FullscreenSize.Width / 2,
renderer.FullscreenSize.Height / 2, true );
blurVerticalTex = new Texture( renderer, renderer.FullscreenSize.Width / 2,
renderer.FullscreenSize.Height / 2, true );
finalTex = new Texture( renderer, renderer.FullscreenSize.Width,
renderer.FullscreenSize.Height, true );
fullscreenQuad = Mesh.Rectangle( renderer, Color.Black, renderer.FullscreenSize.Width,
renderer.FullscreenSize.Height );
shadowEffect = GlobalResourceCache.CreateEffectFromFile( renderer,
@".\\FXFiles\\Shadow.fx" );
initialized = true;
}
