public static bool CheckMergeConnectivity(MyCubeGrid hitGrid, MyCubeGrid gridToMerge, Vector3I gridOffset)
{
// CH: Beware, this funtion seems horribly inefficient! Think twice before using it (e.g. don't use it in a 10000x loop) or optimize it :-)
MatrixI mergeTransform = hitGrid.CalculateMergeTransform(gridToMerge, gridOffset);
Quaternion mergeOri;
mergeTransform.GetBlockOrientation().GetQuaternion(out mergeOri);
foreach (var block in gridToMerge.GetBlocks())
{
Quaternion ori;
Vector3I pos = Vector3I.Transform(block.Position, mergeTransform);
block.Orientation.GetQuaternion(out ori);
//Matrix mergeGridMatrix = Matrix.CreateFromQuaternion(mergeOri);
//Matrix oriMatrix = Matrix.CreateFromQuaternion(ori);
//Matrix result = oriMatrix * mergeGridMatrix;
//Quaternion quatFromMatrix = Quaternion.CreateFromRotationMatrix(result);
// Seems that quaternion multiplication is reversed to matrix multiplication!
ori = mergeOri * ori;
var mountPoints = block.BlockDefinition.GetBuildProgressModelMountPoints(block.BuildLevelRatio);
if (MyCubeGrid.CheckConnectivity(hitGrid, block.BlockDefinition, mountPoints, ref ori, ref pos))
return true;
}
return false;
}