UVtools/UVtools.Core/Operations/OperationLayerClone.cs

/*
 *                     GNU AFFERO GENERAL PUBLIC LICENSE
 *                       Version 3, 19 November 2007
 *  Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 *  Everyone is permitted to copy and distribute verbatim copies
 *  of this license document, but changing it is not allowed.
 */

using System;
using System.Linq;
using System.Text;
using UVtools.Core.FileFormats;

namespace UVtools.Core.Operations;


public sealed class OperationLayerClone : Operation
{
    #region Members
    private uint _clones = 1;
    private bool _keepSamePositionZ;

    #endregion

    #region Overrides

    public override LayerRangeSelection StartLayerRangeSelection => LayerRangeSelection.Current;
    public override bool CanROI => false;
    public override bool PassActualLayerIndex => true;
    public override string IconClass => "fa-solid fa-clone";
    public override string Title => "Clone layers";
    public override string Description =>
        "Clone layers.\n\n" +
        "Useful to increase the height of the model or add additional structure by duplicating layers. For example, can be used to increase the raft height for added stability.";
    public override string ConfirmationText =>
        $"clone layers {LayerIndexStart} through {LayerIndexEnd}, {Clones} time{(Clones != 1 ? "s" : "")}?";

    public override string ProgressTitle =>
        $"Cloning layers {LayerIndexStart} through {LayerIndexEnd}, {Clones} time{(Clones != 1 ? "s" : "")}";

    public override string ProgressAction => "Cloned layers";

    public override bool CanCancel => false;

    public override bool CanHaveProfiles => false;

    public override string? ValidateInternally()
    {
        var sb = new StringBuilder();
        if (Clones <= 0)
        {
            sb.AppendLine("Clones must be a positive number");
        }

        return sb.ToString();
    }

    public override string ToString()
    {
        var result = $"[Clones: {Clones}]" + LayerRangeString;
        if (!string.IsNullOrEmpty(ProfileName)) result = $"{ProfileName}: {result}";
        return result;
    }

    #endregion

    #region Properties

    /// <summary>
    /// Gets or sets if cloned layers will keep same position z or get the height rebuilt
    /// </summary>
    public bool KeepSamePositionZ
    {
        get => _keepSamePositionZ;
        set => RaiseAndSetIfChanged(ref _keepSamePositionZ, value);
    }

    /// <summary>
    /// Gets or sets the number of clones
    /// </summary>
    public uint Clones
    {
        get => _clones;
        set
        {
            if(!RaiseAndSetIfChanged(ref _clones, value)) return;
            RaisePropertyChanged(nameof(ExtraLayers));
        }
    }

    public uint ExtraLayers => (uint)Math.Max(0, ((int)LayerIndexEnd - LayerIndexStart + 1) * _clones);

    #endregion

    #region Constructor

    public OperationLayerClone() { }

    public OperationLayerClone(FileFormat slicerFile) : base(slicerFile) { }

    #endregion

    #region Methods

    protected override bool ExecuteInternally(OperationProgress progress)
    {
        uint totalClones = (LayerIndexEnd - LayerIndexStart + 1) * Clones;
        progress.Reset(ProgressAction, totalClones);

        var oldLayers = SlicerFile.ToArray();

        SlicerFile.Init(SlicerFile.LayerCount + totalClones);

        //var newLayers = new Layer[SlicerFile.LayerCount + totalClones];
        uint newLayerIndex = 0;
        float incrementedPositionZ = 0;
        for (uint layerIndex = 0; layerIndex < oldLayers.Length; layerIndex++)
        {
            SlicerFile[newLayerIndex++] = oldLayers[layerIndex];

            if (!_keepSamePositionZ && incrementedPositionZ > 0)
            {
                oldLayers[layerIndex].PositionZ += incrementedPositionZ;
            }
            
            if (layerIndex < LayerIndexStart || layerIndex > LayerIndexEnd) continue;
            float increment = SlicerFile[layerIndex].RelativePositionZ;
            for (uint i = 0; i < _clones; i++)
            {
                SlicerFile[newLayerIndex] = oldLayers[layerIndex].Clone();

                if (!_keepSamePositionZ)
                {
                    incrementedPositionZ += increment;
                    SlicerFile[newLayerIndex].PositionZ += increment * (i + 1);
                }

                newLayerIndex++;
                progress++;
            }
        }

        SlicerFile.SuppressRebuildPropertiesWork(() =>
        {
            SlicerFile.Layers = SlicerFile.Layers; // Reassign for update
        });


        return !progress.Token.IsCancellationRequested;
    }

    #endregion
}