/// <summary>
/// Creates a new empty vertex attribute using the default struct setups
/// </summary>
/// <param name="attributeType">The attribute type of the vertex attribute</param>
public GCVertexSet(GCVertexAttribute attributeType)
{
attribute = attributeType;
switch (attribute)
{
case GCVertexAttribute.Position:
dataType = GCDataType.Float32;
structType = GCStructType.Position_XYZ;
break;
case GCVertexAttribute.Normal:
dataType = GCDataType.Float32;
structType = GCStructType.Normal_XYZ;
break;
case GCVertexAttribute.Color0:
dataType = GCDataType.RGBA8;
structType = GCStructType.Color_RGBA;
break;
case GCVertexAttribute.Tex0:
dataType = GCDataType.Signed16;
structType = GCStructType.TexCoord_ST;
break;
default:
throw new ArgumentException($"Datatype { attribute } is not a valid vertex type for SA2");
}
data = new List <IOVtx>();
}
/// <summary>
/// Create a custom empty vertex attribute
/// </summary>
/// <param name="attribute"></param>
/// <param name="dataType"></param>
/// <param name="structType"></param>
/// <param name="fractionalBitCount"></param>
public GCVertexSet(GCVertexAttribute attribute, GCDataType dataType, GCStructType structType)
{
this.attribute = attribute;
this.dataType = dataType;
this.structType = structType;
data = new List <IOVtx>();
}
/// <summary>
/// Creates a new parameter with the default value according to each attribute type <br/> (which are the only ones that work ingame)
/// </summary>
/// <param name="vertexAttrib">The vertex attribute type that the parameter is for</param>
public VtxAttrFmtParameter(GCVertexAttribute vertexAttrib) : base(ParameterType.VtxAttrFmt)
{
VertexAttribute = vertexAttrib;
// Setting the default values
switch (vertexAttrib)
{
case GCVertexAttribute.Position:
Unknown = 5120;
break;
case GCVertexAttribute.Normal:
Unknown = 9216;
break;
case GCVertexAttribute.Color0:
Unknown = 27136;
break;
case GCVertexAttribute.Tex0:
Unknown = 33544;
break;
default:
break;
}
}
/// <summary>
/// Read an entire vertex data set
/// </summary>
/// <param name="file">The files contents</param>
/// <param name="address">The starting address of the file</param>
/// <param name="imageBase">The image base of the addresses</param>
public GCVertexSet(byte[] file, uint address, uint imageBase)
{
attribute = (GCVertexAttribute)file[address];
if (attribute == GCVertexAttribute.Null)
{
return;
}
uint structure = ByteConverter.ToUInt32(file, (int)address + 4);
structType = (GCStructType)(structure & 0x0F);
dataType = (GCDataType)((structure >> 4) & 0x0F);
if (file[address + 1] != StructSize)
{
throw new Exception($"Read structure size doesnt match calculated structure size: {file[address + 1]} != {StructSize}");
}
// reading the data
int count = ByteConverter.ToUInt16(file, (int)address + 2);
int tmpaddr = (int)(ByteConverter.ToUInt32(file, (int)address + 8) - imageBase);
data = new List <IOVtx>();
switch (attribute)
{
case GCVertexAttribute.Position:
case GCVertexAttribute.Normal:
for (int i = 0; i < count; i++)
{
data.Add(new Vector3(file, tmpaddr));
tmpaddr += 12;
}
break;
case GCVertexAttribute.Color0:
for (int i = 0; i < count; i++)
{
data.Add(new Color(file, tmpaddr, dataType, out tmpaddr));
}
break;
case GCVertexAttribute.Tex0:
for (int i = 0; i < count; i++)
{
data.Add(new UV(file, tmpaddr));
tmpaddr += 4;
}
break;
default:
throw new ArgumentException($"Attribute type not valid sa2 type: {attribute}");
}
}
/// <summary>
/// Allows to manually create a Vertex attribute parameter
/// </summary>
/// <param name="Unknown"></param>
/// <param name="vertexAttrib">The vertex attribute type that the parameter is for</param>
public VtxAttrFmtParameter(ushort Unknown, GCVertexAttribute vertexAttrib) : base(ParameterType.VtxAttrFmt)
{
this.Unknown = Unknown;
VertexAttribute = vertexAttrib;
}
