/// <summary>
/// Function to read the sprite data from a stream.
/// </summary>
/// <param name="stream">The stream containing the sprite.</param>
/// <param name="byteCount">The number of bytes to read from the stream.</param>
/// <param name="overrideTexture">The texture to assign to the sprite instead of the texture associated with the name stored in the file.</param>
/// <returns>A new <see cref="GorgonSprite"/>.</returns>
protected override GorgonSprite OnReadFromStream(Stream stream, int byteCount, GorgonTexture2DView overrideTexture)
{
var reader = new GorgonChunkReader(stream);
try
{
// We don't need byte count for this.
return(LoadSprite(Graphics, reader, overrideTexture));
}
finally
{
reader.Dispose();
}
}
/// <summary>
/// Function to read the renderable data from a stream.
/// </summary>
/// <param name="stream">Open file stream containing the renderable data.</param>
/// <exception cref="System.ArgumentNullException">Thrown when the <paramref name="stream" /> parameter is NULL (Nothing in VB.Net).</exception>
/// <exception cref="System.IO.IOException">Thrown when the stream parameter is not opened for reading data.</exception>
/// <exception cref="GorgonLibrary.GorgonException">Thrown when the data in the stream does not contain valid renderable data, or contains a newer version of the renderable than Gorgon can handle.</exception>
void IPersistedRenderable.Load(Stream stream)
{
if (stream == null)
{
throw new ArgumentNullException("stream");
}
if (!stream.CanRead)
{
throw new IOException(Resources.GOR2D_STREAM_WRITE_ONLY);
}
GorgonChunkReader chunk = null;
// Read the sprite in.
try
{
chunk = new GorgonChunkReader(stream);
if (!chunk.HasChunk(FileHeader))
{
// The old format doesn't use the chunker.
chunk.Dispose();
chunk = null;
// Check to see if it's an older version of the Gorgon sprite data.
using (var oldReader = new GorgonBinaryReader(stream, true))
{
GorgonV1SpriteReader.LoadSprite(this, oldReader);
return;
}
}
// Read in the file header.
chunk.Begin(FileHeader);
chunk.Begin("SPRTDATA");
Anchor = chunk.Read <Vector2>();
Size = chunk.Read <Vector2>();
HorizontalFlip = chunk.ReadBoolean();
VerticalFlip = chunk.ReadBoolean();
// Read vertex colors.
for (int i = 0; i < Vertices.Length; i++)
{
Vertices[i].Color = chunk.Read <GorgonColor>();
}
// Write vertex offsets.
chunk.ReadRange(_offsets);
chunk.End();
// Read rendering information.
chunk.Begin("RNDRDATA");
CullingMode = chunk.Read <CullingMode>();
AlphaTestValues = chunk.Read <GorgonRangeF>();
Blending.AlphaOperation = chunk.Read <BlendOperation>();
Blending.BlendOperation = chunk.Read <BlendOperation>();
Blending.BlendFactor = chunk.Read <GorgonColor>();
Blending.DestinationAlphaBlend = chunk.Read <BlendType>();
Blending.DestinationBlend = chunk.Read <BlendType>();
Blending.SourceAlphaBlend = chunk.Read <BlendType>();
Blending.SourceBlend = chunk.Read <BlendType>();
Blending.WriteMask = chunk.Read <ColorWriteMaskFlags>();
DepthStencil.BackFace.ComparisonOperator = chunk.Read <ComparisonOperator>();
DepthStencil.BackFace.DepthFailOperation = chunk.Read <StencilOperation>();
DepthStencil.BackFace.FailOperation = chunk.Read <StencilOperation>();
DepthStencil.BackFace.PassOperation = chunk.Read <StencilOperation>();
DepthStencil.FrontFace.ComparisonOperator = chunk.Read <ComparisonOperator>();
DepthStencil.FrontFace.DepthFailOperation = chunk.Read <StencilOperation>();
DepthStencil.FrontFace.FailOperation = chunk.Read <StencilOperation>();
DepthStencil.FrontFace.PassOperation = chunk.Read <StencilOperation>();
DepthStencil.DepthBias = chunk.ReadInt32();
DepthStencil.DepthComparison = chunk.Read <ComparisonOperator>();
DepthStencil.StencilReference = chunk.ReadInt32();
DepthStencil.IsDepthWriteEnabled = chunk.ReadBoolean();
DepthStencil.StencilReadMask = chunk.ReadByte();
DepthStencil.StencilReadMask = chunk.ReadByte();
chunk.End();
// Read collider information.
if (chunk.HasChunk("COLLIDER"))
{
chunk.Begin("COLLIDER");
Type colliderType = Type.GetType(chunk.ReadString());
Debug.Assert(colliderType != null, "Collider is NULL!!");
var collider = (Gorgon2DCollider)Activator.CreateInstance(colliderType);
collider.ReadFromChunk(chunk);
chunk.End();
}
// Read texture information.
chunk.Begin("TXTRDATA");
TextureSampler.BorderColor = chunk.Read <GorgonColor>();
TextureSampler.HorizontalWrapping = chunk.Read <TextureAddressing>();
TextureSampler.VerticalWrapping = chunk.Read <TextureAddressing>();
TextureSampler.TextureFilter = chunk.Read <TextureFilter>();
DeferredTextureName = chunk.ReadString();
TextureRegion = chunk.ReadRectangleF();
}
finally
{
if (chunk != null)
{
chunk.Dispose();
}
}
}
