/// <summary>
/// Find if a vertex attribute has been set.
/// </summary>
/// <param name="attribute">The attribute or attributes to test for.</param>
/// <returns>True if this vertex has the specified attributes set, false if they are default values.</returns>
public bool HasArrays(CSG_VertexAttributes attribute)
{
return((m_Attributes & attribute) == attribute);
}
/// <summary>
/// Allocate and fill the requested attribute arrays.
/// </summary>
/// <remarks>
/// If you are using this function to rebuild a mesh, use SetMesh instead. SetMesh handles setting null arrays where appropriate for you.
/// </remarks>
/// <seealso cref="SetMesh"/>
/// <param name="vertices">The source vertices.</param>
/// <param name="position">A new array of the vertex position values if requested by the attributes parameter, or null.</param>
/// <param name="color">A new array of the vertex color values if requested by the attributes parameter, or null.</param>
/// <param name="uv0">A new array of the vertex uv0 values if requested by the attributes parameter, or null.</param>
/// <param name="normal">A new array of the vertex normal values if requested by the attributes parameter, or null.</param>
/// <param name="tangent">A new array of the vertex tangent values if requested by the attributes parameter, or null.</param>
/// <param name="uv2">A new array of the vertex uv2 values if requested by the attributes parameter, or null.</param>
/// <param name="uv3">A new array of the vertex uv3 values if requested by the attributes parameter, or null.</param>
/// <param name="uv4">A new array of the vertex uv4 values if requested by the attributes parameter, or null.</param>
/// <param name="attributes">A flag with the MeshAttributes requested.</param>
/// <seealso cref="HasArrays"/>
public static void GetArrays(
IList <CSG_Vertex> vertices,
out Vector3[] position,
out Color[] color,
out Vector2[] uv0,
out Vector3[] normal,
out Vector4[] tangent,
out Vector2[] uv2,
out List <Vector4> uv3,
out List <Vector4> uv4,
CSG_VertexAttributes attributes)
{
if (vertices == null)
{
throw new ArgumentNullException("vertices");
}
int vc = vertices.Count;
var first = vc < 1 ? new CSG_Vertex() : vertices[0];
bool hasPosition = ((attributes & CSG_VertexAttributes.Position) == CSG_VertexAttributes.Position) && first.hasPosition;
bool hasColor = ((attributes & CSG_VertexAttributes.Color) == CSG_VertexAttributes.Color) && first.hasColor;
bool hasUv0 = ((attributes & CSG_VertexAttributes.Texture0) == CSG_VertexAttributes.Texture0) && first.hasUV0;
bool hasNormal = ((attributes & CSG_VertexAttributes.Normal) == CSG_VertexAttributes.Normal) && first.hasNormal;
bool hasTangent = ((attributes & CSG_VertexAttributes.Tangent) == CSG_VertexAttributes.Tangent) && first.hasTangent;
bool hasUv2 = ((attributes & CSG_VertexAttributes.Texture1) == CSG_VertexAttributes.Texture1) && first.hasUV2;
bool hasUv3 = ((attributes & CSG_VertexAttributes.Texture2) == CSG_VertexAttributes.Texture2) && first.hasUV3;
bool hasUv4 = ((attributes & CSG_VertexAttributes.Texture3) == CSG_VertexAttributes.Texture3) && first.hasUV4;
position = hasPosition ? new Vector3[vc] : null;
color = hasColor ? new Color[vc] : null;
uv0 = hasUv0 ? new Vector2[vc] : null;
normal = hasNormal ? new Vector3[vc] : null;
tangent = hasTangent ? new Vector4[vc] : null;
uv2 = hasUv2 ? new Vector2[vc] : null;
uv3 = hasUv3 ? new List <Vector4>(vc) : null;
uv4 = hasUv4 ? new List <Vector4>(vc) : null;
for (int i = 0; i < vc; i++)
{
if (hasPosition)
{
position[i] = vertices[i].position;
}
if (hasColor)
{
color[i] = vertices[i].color;
}
if (hasUv0)
{
uv0[i] = vertices[i].uv0;
}
if (hasNormal)
{
normal[i] = vertices[i].normal;
}
if (hasTangent)
{
tangent[i] = vertices[i].tangent;
}
if (hasUv2)
{
uv2[i] = vertices[i].uv2;
}
if (hasUv3)
{
uv3.Add(vertices[i].uv3);
}
if (hasUv4)
{
uv4.Add(vertices[i].uv4);
}
}
}
