public GcmfVertex(ObjMtlVertex vtx)
{
this.Position = vtx.Position;
this.Normal = vtx.Normal;
this.PrimaryTexCoord = vtx.TexCoord;
/* OBJ considers (0,0) to be the top left, GMA and OpenGL consider it to be the bottom left.
* See http://stackoverflow.com/a/5605027 (Thanks to Tommy @ StackOverflow). */
if (this.PrimaryTexCoord.HasValue)
{
this.PrimaryTexCoord = new Vector2(this.PrimaryTexCoord.Value.X, 1 - this.PrimaryTexCoord.Value.Y);
}
}
public GcmfVertex(ObjMtlVertex vtx)
{
if (vtx.Position.W != 1.0f)
{
throw new InvalidGmaFileException("The W component of the vertex position must be 1 if present.");
}
this.Position = new Vector3(vtx.Position.X, vtx.Position.Y, vtx.Position.Z);
this.Normal = vtx.Normal;
if (vtx.TexCoord.HasValue)
{
if (vtx.TexCoord.Value.Z != 0.0f)
{
throw new InvalidGmaFileException("The W component of the texture coordinate must be 0 if present.");
}
/* OBJ considers (0,0) to be the top left, GMA and OpenGL consider it to be the bottom left.
* See http://stackoverflow.com/a/5605027 (Thanks to Tommy @ StackOverflow). */
this.PrimaryTexCoord = new Vector2(vtx.TexCoord.Value.X, 1 - vtx.TexCoord.Value.Y);
}
}
