protected void UpdateDerivedMetrics() { mLoadRadiusInCells = mLoadRadius / mCellSize; mHoldRadiusInCells = mHoldRadius / mCellSize; mBottomLeft = mOrigin - new Vector2(mCellSize * mGridExtentsHorz * 0.5f, mCellSize * mGridExtentsVert * 0.5f); }