private static bool GetTopMatrix(IMyPistonBase block, MyCubeSize topSize, out MatrixD matrix, MyCubeBlockDefinition def = null)
{
MyEntitySubpart subpart1;
MyEntitySubpart subpart2;
MyEntitySubpart subpart3;
if (block.Closed || !block.TryGetSubpart("PistonSubpart1", out subpart1) || (!subpart1.Subparts.TryGetValue("PistonSubpart2", out subpart2) || !subpart2.Subparts.TryGetValue("PistonSubpart3", out subpart3)))
{
matrix = MatrixD.Identity;
return(false);
}
IMyModelDummy subpart;
if (!TryGetDummy("TopBlock", subpart3.Model, out subpart))
{
matrix = MatrixD.Identity;
return(false);
}
MatrixD m = block.WorldMatrix;
m.Translation = Vector3D.Transform(subpart.Matrix.Translation, subpart3.WorldMatrix);
if (block.CubeGrid != null && topSize == block.CubeGrid.GridSizeEnum)
{
if (def == null)
{
def = GetTopDef(block, topSize);
}
if (def.Center != Vector3.Zero)
{
m.Translation = Vector3D.Transform(-def.Center * MyDefinitionManager.Static.GetCubeSize(topSize), m);
}
}
else if (topSize == MyCubeSize.Small)
{
m.Translation += m.Up * 0.5;
}
matrix = m;
return(true);
}