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/*
* 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.Collections.Generic;
using SixLabors.ImageSharp;
using SixLabors.ImageSharp.Advanced;
using SixLabors.ImageSharp.PixelFormats;
namespace PrusaSL1Reader
{
public class UniversalLayer : List<UniversalLayer.LayerLine>
{
/// <summary>
/// Represents a line, only white pixels
/// </summary>
public class LayerLine
{
/// <summary>
/// Gets the x start position
/// </summary>
public uint X { get; }
/// <summary>
/// Gets the x end position
/// </summary>
public uint X2 => X + Length;
/// <summary>
/// Gets the y position
/// </summary>
public uint Y { get; }
/// <summary>
/// Number of pixels to fill
/// </summary>
public uint Length { get; }
public LayerLine(uint x, uint y, uint length)
{
X = x;
Y = y;
Length = length;
}
}
public List<LayerLine> Lines { get; } = new List<LayerLine>();
public UniversalLayer(Image<L8> image)
{
AddFromImage(image);
}
public void AddFromImage(Image<L8> image)
{
for (int y = 0; y < image.Height; y++)
{
var span = image.GetPixelRowSpan(y);
for (int x = 0; x < image.Width; x++)
{
if(span[x].PackedValue < 125) continue;
int startX = x;
while (++x < image.Width)
{
if (span[x].PackedValue < 125 || x == (image.Width-1))
{
Add(new LayerLine((uint)startX, (uint)y, (uint)(x-startX)));
}
}
}
}
}
public Image<L8> ToImage(int resolutionX, int resolutionY)
{
Image <L8> image = new Image<L8>(resolutionX, resolutionY);
foreach (var line in Lines)
{
var span = image.GetPixelRowSpan((int)line.Y);
for (uint i = line.X; i <= line.X2; i++)
{
span[(int)i] = Helpers.L8White;
}
}
return image;
}
}
}
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