public void DeleteSelection()
    {
        m_Action = new VCEAction();

        VCEditor.s_Mirror.CalcPrepare(VCEditor.s_Scene.m_Setting.m_VoxelSize);
        foreach (KeyValuePair <int, byte> kvp in m_SelectionMgr.m_Selection)
        {
            // Mirror
            if (VCEditor.s_Mirror.Enabled_Masked)
            {
                IntVector3 pos = VCIsoData.KeyToIPos(kvp.Key);
                VCEditor.s_Mirror.MirrorVoxel(pos);
                float strength = (float)(kvp.Value) / 255.0f;
                for (int i = 0; i < VCEditor.s_Mirror.OutputCnt; ++i)
                {
                    if (VCEditor.s_Scene.m_IsoData.IsPointIn(VCEditor.s_Mirror.Output[i]))
                    {
                        int     voxel_pos = VCIsoData.IPosToKey(VCEditor.s_Mirror.Output[i]);
                        VCVoxel old_voxel = VCEditor.s_Scene.m_IsoData.GetVoxel(voxel_pos);
                        VCVoxel new_voxel = old_voxel;
                        new_voxel.VolumeF = new_voxel.VolumeF * (1 - strength);
                        if (old_voxel != new_voxel)
                        {
                            VCEAlterVoxel modify = new VCEAlterVoxel(voxel_pos, old_voxel, new_voxel);
                            modify.Redo();
                            m_Action.Modifies.Add(modify);
                        }
                    }
                }
            }
            // No mirror
            else
            {
                float   strength  = (float)(kvp.Value) / 255.0f;
                int     voxel_pos = kvp.Key;
                VCVoxel old_voxel = VCEditor.s_Scene.m_IsoData.GetVoxel(voxel_pos);
                VCVoxel new_voxel = old_voxel;
                new_voxel.VolumeF = new_voxel.VolumeF * (1 - strength);
                if (old_voxel != new_voxel)
                {
                    VCEAlterVoxel modify = new VCEAlterVoxel(voxel_pos, old_voxel, new_voxel);
                    m_Action.Modifies.Add(modify);
                }
            }
        }
        ColorSelection(VCIsoData.BLANK_COLOR, false, true);
        if (m_Action.Modifies.Count > 0)
        {
            m_Action.DoButNotRegister();
            VCUtils.ISOCut(VCEditor.s_Scene.m_IsoData, m_Action);
            m_Action.Register();
            VCEStatusBar.ShowText("Selected voxels have been removed".ToLocalizationString(), 2);
        }
        ClearSelection();
    }
    public void TextureSelection()
    {
        if (!VCEditor.Instance.m_UI.m_MaterialTab.isChecked)
        {
            return;
        }
        if (VCEditor.SelectedVoxelType < 0)
        {
            return;
        }

        m_Action = new VCEAction();

        ulong oldmat_guid = VCEditor.s_Scene.m_IsoData.MaterialGUID(VCEditor.SelectedVoxelType);
        ulong newmat_guid = VCEditor.SelectedMaterial.m_Guid;

        if (oldmat_guid != newmat_guid)
        {
            VCEAlterMaterialMap modify = new VCEAlterMaterialMap(VCEditor.SelectedVoxelType, oldmat_guid, newmat_guid);
            m_Action.Modifies.Add(modify);
        }

        VCEditor.s_Mirror.CalcPrepare(VCEditor.s_Scene.m_Setting.m_VoxelSize);
        foreach (KeyValuePair <int, byte> kvp in m_SelectionMgr.m_Selection)
        {
            // Mirror
            if (VCEditor.s_Mirror.Enabled_Masked)
            {
                IntVector3 pos = VCIsoData.KeyToIPos(kvp.Key);
                VCEditor.s_Mirror.MirrorVoxel(pos);
                float strength = (float)(kvp.Value) / 255.0f;
                if (strength < 0.5f)
                {
                    continue;
                }
                for (int i = 0; i < VCEditor.s_Mirror.OutputCnt; ++i)
                {
                    if (VCEditor.s_Scene.m_IsoData.IsPointIn(VCEditor.s_Mirror.Output[i]))
                    {
                        int     voxel_pos = VCIsoData.IPosToKey(VCEditor.s_Mirror.Output[i]);
                        VCVoxel old_voxel = VCEditor.s_Scene.m_IsoData.GetVoxel(voxel_pos);
                        VCVoxel new_voxel = new VCVoxel(old_voxel.Volume, (byte)(VCEditor.SelectedVoxelType));
                        if (old_voxel != new_voxel)
                        {
                            VCEAlterVoxel modify = new VCEAlterVoxel(voxel_pos, old_voxel, new_voxel);
                            modify.Redo();
                            m_Action.Modifies.Add(modify);
                        }
                    }
                }
            }
            // No mirror
            else
            {
                float strength = (float)(kvp.Value) / 255.0f;
                if (strength < 0.5f)
                {
                    continue;
                }
                int     voxel_pos = kvp.Key;
                VCVoxel old_voxel = VCEditor.s_Scene.m_IsoData.GetVoxel(voxel_pos);
                VCVoxel new_voxel = new VCVoxel(old_voxel.Volume, (byte)(VCEditor.SelectedVoxelType));
                if (old_voxel != new_voxel)
                {
                    VCEAlterVoxel modify = new VCEAlterVoxel(voxel_pos, old_voxel, new_voxel);
                    m_Action.Modifies.Add(modify);
                }
            }
        }
        if (m_Action.Modifies.Count > 0)
        {
            m_Action.Do();
            VCEStatusBar.ShowText("Selected voxels have been textured".ToLocalizationString(), 2);
        }
    }