private static Block GetShadingModifierBlock(string nodeName, string shaderName)
{
var w = new BlockWriter();
w.WriteString(nodeName); // shading modifier name
w.WriteU32(1); // chain index
w.WriteU32(1); // shading attributes
w.WriteU32(1); // shading list count
w.WriteU32(1); // shader count
w.WriteString(shaderName); // shader name
return(w.GetBlock(BlockType.ShadingModifier));
}
private static Block GetTextureResourceModifierChain(Texture texture)
{
var w = new BlockWriter();
w.WriteString(texture.Name); // modifier chain name
w.WriteU32(2); // modifier chain type: 2 = texture resource modifier chain
w.WriteU32(0); // modifier chain attributes: 0 = neither bounding sphere nor
w.WritePadding(); // modifier chain padding
w.WriteU32(1); // modifier count in this chain
w.WriteBlock(GetTextureDeclarationBlock(texture));
return(w.GetBlock(BlockType.ModifierChain));
}
private static Block GetModelNodeBlock(Node node)
{
var w = new BlockWriter();
w.WriteString(node.Name); // model node name
w.WriteU32(1); // parent node count
w.WriteString(node.Parent); // parent node name
w.WriteArray(node.Transformation.ToArray()); // transformation
w.WriteString(node.Mesh); // model resource name
w.WriteU32(3); // visibility 3 = front and back
return(w.GetBlock(BlockType.ModelNode));
}
private static Block GetModelResourceModifierChain(Mesh mesh)
{
var w = new BlockWriter();
w.WriteString(mesh.Name); // modifier chain name, bonded to ModelNodeBlock.ModelResourceName
w.WriteU32(1); // modifier chain type: 1 = model resource modifier chain
w.WriteU32(0); // modifier chain attributes: 0 = neither bounding sphere nor
// Bounding box info present. Padding.
w.WritePadding();
w.WriteU32(1); // modifier count in this chain
w.WriteBlock(GetMeshDeclarationBlock(mesh));
return(w.GetBlock(BlockType.ModifierChain));
}
private static Block GetGroupNodeModifierChain(Node node)
{
var w = new BlockWriter();
w.WriteString(node.Name); // modifier chain name
w.WriteU32(0); // modifier chain type: 0 = node modifier chain
w.WriteU32(0); // modifier chain attributes: 0 = neither bounding sphere nor
// Bounding box info present.
w.WritePadding();
w.WriteU32(1); // modifier count in this chain
w.WriteBlock(GetGroupNodeBlock(node));
return(w.GetBlock(BlockType.ModifierChain));
}
private static Block GetNodeModifierChain(Node node, U3DDocument doc)
{
var w = new BlockWriter();
w.WriteString(node.Name); // modifier chain name
w.WriteU32(0); // modifier chain type: 0 = node modifier chain
w.WriteU32(0); // modifier chain attributes: 0 = neither bounding sphere nor
// Bounding box info present.
w.WritePadding();
w.WriteU32(2); // modifier count in this chain
w.WriteBlock(GetModelNodeBlock(node));
w.WriteBlock(GetShadingModifierBlock(node.Name, doc.Meshes[node.Mesh].Shader));
return(w.GetBlock(BlockType.ModifierChain));
}
private static Block GetHeaderBlock(U3DDocument doc)
{
var w = new BlockWriter();
w.WriteI32(0x00000000); // version
w.WriteU32(0x00000004); // profile identifier (0x00000004 - No compression mode)
w.WriteU32(36); // declaration size
w.WriteU64(732); // file size
w.WriteU32(106); // character encoding: 106 = UTF-8
//Meta data.
w.WriteMetaU32(1); // Key/Value Pair Count
w.WriteMetaU32(0); // Key/Value Pair Attributes; 0x00000000 - indicates the Value is formatted as a String
w.WriteMetaString("Created by", doc.TextEncoding); // Key String
w.WriteMetaString("U3DSpace", doc.TextEncoding); // Value String
return(w.GetBlock(BlockType.Header));
}
private static Block GetTextureDeclarationBlock(Texture texture)
{
var w = new BlockWriter();
w.WriteString(texture.Name); // texture name
// Texture image format.
w.WriteU32(0); // texture height
w.WriteU32(0); // texture width
w.WriteU8(0x0F); // texture image type, 0x0F - color RGBA
w.WriteU32(1); // continuation image count
// Continuation image format.
w.WriteU8((byte)texture.ImageFormat); // compression type, 0x01 - JPEG-24, 0x02 - PNG, 0x03 - JPEG-8, 0x04 - TIFF
w.WriteU8(0x0F); // texture image channels, 0x0F: alpha, red, green, blue
w.WriteU16(0x0000); // continuation image attributes, 0x0000 - default attributes
w.WriteU32((uint)texture.Image.Length); // image data byte count
return(w.GetBlock(BlockType.TextureDeclaration));
}
private static Block GetGroupNodeBlock(Node node)
{
var w = new BlockWriter();
w.WriteString(node.Name); // model node name
w.WriteU32(1); // parent node count
w.WriteString(node.Parent); // parent node name
w.WriteArray(node.Transformation.ToArray()); // transformation
return(w.GetBlock(BlockType.GroupNode));
}
private static Block GetLitTextureShaderBlock(Shader shader)
{
var w = new BlockWriter();
w.WriteString(shader.Name); // shader name
w.WriteU32(1); // Lit texture shader attributes: 1 = Lights enabled
w.WriteF32(0f); // Alpha Test Reference
w.WriteU32(0x00000617); // Alpha Test Function: ALWAYS
w.WriteU32(0x00000605); // Color Blend Function: FB_MULTIPLY
w.WriteU32(1); // Render pass enabled flags
w.WriteU32(string.IsNullOrEmpty(shader.Texture) ? 0u : 1u); // Shader channels (active texture count)
w.WriteU32(0); // Alpha texture channels
w.WriteString(shader.Material); // Material name
// Texture information.
if (!string.IsNullOrEmpty(shader.Texture))
{
w.WriteString(shader.Texture); // Texture name
w.WriteF32(1f); // Texture Intensity
w.WriteU8(0); // Blend function: 0 - Multiply
w.WriteU8(1); // Blend Source, 1 - blending constant
w.WriteF32(1f); // Blend Constant
w.WriteU8(0x00); // Texture Mod; 0x00: TM_NONE; shader should use texture coordinates of the model
w.WriteArray(Matrix4.GetIdentityMatrix().ToArray()); // Texture Transform Matrix Element
w.WriteArray(Matrix4.GetIdentityMatrix().ToArray()); // Texture Wrap Transform Matrix Element
w.WriteU8(0x03); // Texture Repeat
}
return(w.GetBlock(BlockType.LitTextureShader));
}
private static Block GetTextureContinuationBlock(Texture texture)
{
var w = new BlockWriter();
w.WriteString(texture.Name); // texture name
w.WriteU32(0); // continuation image index
// Image data.
foreach (byte b in texture.Image)
{
w.WriteU8(b);
}
return(w.GetBlock(BlockType.TextureContinuation));
}
private static Block GetMaterialResourceBlock(Material material)
{
var w = new BlockWriter();
w.WriteString(material.Name); // Material resource name
w.WriteU32(0x0000003F); // Material attributes: use all colors, opacity and reflectivity 0x0000003F
w.WriteF32(material.Ambient.R); // Ambient red
w.WriteF32(material.Ambient.G); // Ambient green
w.WriteF32(material.Ambient.B); // Ambient blue
w.WriteF32(material.Diffuse.R); // Diffuse red
w.WriteF32(material.Diffuse.G); // Diffuse green
w.WriteF32(material.Diffuse.B); // Diffuse blue
w.WriteF32(material.Specular.R); // Specular red
w.WriteF32(material.Specular.G); // Specular green
w.WriteF32(material.Specular.B); // Specular blue
w.WriteF32(material.Emissive.R); // Emissive red
w.WriteF32(material.Emissive.G); // Emissive green
w.WriteF32(material.Emissive.B); // Emissive blue
w.WriteF32(material.Reflectivity); // Reflectivity
w.WriteF32(material.Opacity); // Opacity
return(w.GetBlock(BlockType.MaterialResource));
}
private static Block GetMeshContinuationBlock(Mesh mesh)
{
var w = new BlockWriter();
w.WriteString(mesh.Name); // mesh name
w.WriteU32(0); // chain index
// Base Mesh Description.
w.WriteU32((uint)mesh.Triangles.Count); // base face count
w.WriteU32((uint)mesh.Positions.Count); // base position count
w.WriteU32((uint)mesh.Normals.Count); // base normal count
w.WriteU32(0); // base diffuse color count
w.WriteU32(0); // base specular color count
w.WriteU32((uint)mesh.TextureCoordinates.Count); // base texture coordinate count
// Base Mesh Data.
foreach (Vector3 position in mesh.Positions)
{
w.WriteF32(position.X);
w.WriteF32(position.Y);
w.WriteF32(position.Z);
}
foreach (Vector3 normal in mesh.Normals)
{
w.WriteF32(normal.X);
w.WriteF32(normal.Y);
w.WriteF32(normal.Z);
}
foreach (Vector2 textureCoordinate in mesh.TextureCoordinates)
{
w.WriteF32(textureCoordinate.X);
w.WriteF32(textureCoordinate.Y);
w.WriteF32(0);
w.WriteF32(0);
}
// Base Face.
foreach (Triangle triangle in mesh.Triangles)
{
w.WriteU32(0u); // shading id
foreach (Corner corner in triangle)
{
w.WriteU32((uint)corner.Position);
if (corner.Normal >= 0)
{
w.WriteU32((uint)corner.Normal);
}
if (corner.TextureCoordinate >= 0)
{
w.WriteU32((uint)corner.TextureCoordinate);
}
}
}
return(w.GetBlock(BlockType.MeshContinuation));
}
private static Block GetMeshDeclarationBlock(Mesh mesh)
{
var w = new BlockWriter();
w.WriteString(mesh.Name); // mesh name
w.WriteU32(0); // chain index
// Max mesh description.
w.WriteU32(mesh.Normals.Count == 0 ? 1u : 0u); // mesh attributes: 1 = no normals
w.WriteU32((uint)mesh.Triangles.Count); // face count
w.WriteU32((uint)mesh.Positions.Count); // positions count
w.WriteU32((uint)mesh.Normals.Count); // normal count
w.WriteU32(0); // diffuse color count
w.WriteU32(0); // specular color count
w.WriteU32((uint)mesh.TextureCoordinates.Count); // texture coord count
w.WriteU32(1); // shading count
// Shading description.
w.WriteU32(0); // shading attributes
w.WriteU32(mesh.TextureCoordinates.Count == 0 ? 0u : 1u); // texture layer count
if (mesh.TextureCoordinates.Count > 0)
{
w.WriteU32(2); // texture coord dimensions
}
w.WriteU32(0); // original shading id
// Clod desc.
w.WriteU32((uint)mesh.Positions.Count); // minimum resolution
w.WriteU32((uint)mesh.Positions.Count); // maximum resolution
// Resource Description.
w.WriteU32(300); // position quality factor
w.WriteU32(300); // normal quality factor
w.WriteU32(300); // texture coord quality factor
w.WriteF32(0.01f); // position inverse quant
w.WriteF32(0.01f); // normal inverse quant
w.WriteF32(0.01f); // texture coord inverse quant
w.WriteF32(0.01f); // diffuse color inverse quant
w.WriteF32(0.01f); // specular color inverse quant
w.WriteF32(0.9f); // normal crease parameter
w.WriteF32(0.5f); // normal update parameter
w.WriteF32(0.985f); // normal tolerance parameter
// Skeleton Description.
w.WriteU32(0); // bone count
return(w.GetBlock(BlockType.MeshDeclaration));
}