public BufferAccessor(ArraySegment <byte> bytes, AccessorValueType componentType, AccessorVectorType accessorType, int count)
{
Bytes = bytes;
ComponentType = componentType;
AccessorType = accessorType;
Count = count;
}
public BufferAccessor(INativeArrayManager arrayManager, NativeArray <byte> bytes, AccessorValueType componentType, AccessorVectorType accessorType, int count)
{
ArrayManager = arrayManager;
Bytes = bytes;
ComponentType = componentType;
AccessorType = accessorType;
Count = count;
}
public static BufferAccessor Create <T>(T[] list) where T : struct
{
var t = typeof(T);
var bytes = new byte[list.Length * Marshal.SizeOf(t)];
var span = SpanLike.Wrap <T>(new ArraySegment <byte>(bytes));
for (int i = 0; i < list.Length; ++i)
{
span[i] = list[i];
}
AccessorValueType componentType = default(AccessorValueType);
AccessorVectorType accessorType = default(AccessorVectorType);
if (t == typeof(Vector2))
{
componentType = AccessorValueType.FLOAT;
accessorType = AccessorVectorType.VEC2;
}
else if (t == typeof(Vector3))
{
componentType = AccessorValueType.FLOAT;
accessorType = AccessorVectorType.VEC3;
}
else if (t == typeof(Vector4))
{
componentType = AccessorValueType.FLOAT;
accessorType = AccessorVectorType.VEC4;
}
else if (t == typeof(Quaternion))
{
componentType = AccessorValueType.FLOAT;
accessorType = AccessorVectorType.VEC4;
}
else if (t == typeof(SkinJoints))
{
componentType = AccessorValueType.UNSIGNED_SHORT;
accessorType = AccessorVectorType.VEC4;
}
else if (t == typeof(int))
{
componentType = AccessorValueType.UNSIGNED_INT;
accessorType = AccessorVectorType.SCALAR;
}
else
{
throw new NotImplementedException();
}
return(new BufferAccessor(
new ArraySegment <byte>(bytes), componentType, accessorType, list.Length));
}
// for index buffer
public void AssignAsShort(SpanLike <int> values)
{
if (AccessorType != AccessorVectorType.SCALAR)
{
throw new NotImplementedException();
}
ComponentType = AccessorValueType.UNSIGNED_SHORT;
Bytes = new ArraySegment <byte>(new byte[Stride * values.Length]);
var span = GetSpan <ushort>();
Count = values.Length;
for (int i = 0; i < values.Length; ++i)
{
span[i] = (ushort)values[i];
}
}
public static int ByteSize(this AccessorValueType t)
{
switch (t)
{
case AccessorValueType.BYTE: return(1);
case AccessorValueType.UNSIGNED_BYTE: return(4);
case AccessorValueType.SHORT: return(2);
case AccessorValueType.UNSIGNED_SHORT: return(2);
case AccessorValueType.UNSIGNED_INT: return(4);
case AccessorValueType.FLOAT: return(4);
default: throw new ArgumentException();
}
}
private static BufferAccessor ToBufferAccessor <T>(INativeArrayManager arrayManager, T[] value, AccessorValueType valueType, AccessorVectorType vectorType) where T : struct
{
return(new BufferAccessor(arrayManager,
arrayManager.CreateNativeArray(value).Reinterpret <byte>(Marshal.SizeOf <T>()),
valueType,
vectorType,
value.Length
));
}