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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;
using System.Collections.Generic;
using System.Data;
using System.Drawing;
using System.Text.RegularExpressions;
using Emgu.CV;
using Emgu.CV.CvEnum;
using Emgu.CV.Structure;
using Emgu.CV.Util;
using UVtools.Core.Extensions;
namespace UVtools.Core.Gerber.Primitives;
/// <summary>
/// An outline primitive is an area defined by its outline or contour.
/// The outline is a polygon, consisting of linear segments only, defined by its start vertex and n subsequent vertices.
/// The outline must be closed, i.e. the last vertex must be equal to the start vertex.
/// The outline must comply with all the requirements of a contour according to 4.10.3.
/// </summary>
public class OutlinePrimitive : Primitive
{
#region Constants
public const byte Code = 4;
#endregion
#region Properties
public override string Name => "Outline";
/// <summary>
/// Exposure off/on (0/1)
/// 1
/// </summary>
public string ExposureExpression { get; set; } = "1";
public byte Exposure { get; set; } = 1;
/// <summary>
/// The number of vertices of the outline = the number of coordinate pairs minus one. An integer ≥3.
/// 2
/// </summary>
public string VerticesCountExpression { get; set; } = string.Empty;
public ushort VerticesCount => (ushort) Coordinates.Length;
/// <summary>
/// subsequent X and Y coordinates.
/// The X and Y coordinates are not modal: both X and Y must be specified for all points.
/// 2+n
/// </summary>
public string[] CoordinatesExpression { get; set; } = Array.Empty<string>();
public PointF[] Coordinates { get; set; } = Array.Empty<PointF>();
/// <summary>
/// Rotation angle, in degrees counterclockwise, a decimal.
/// The primitive is rotated around the origin of the macro definition, i.e. the (0, 0) point of macro coordinates.
/// </summary>
public string RotationExpression { get; set; } = "0";
public float Rotation { get; set; } = 0;
#endregion
protected OutlinePrimitive() { }
public OutlinePrimitive(string exposureExpression, string[] coordinatesExpression, string rotationExpression)
{
ExposureExpression = exposureExpression;
CoordinatesExpression = coordinatesExpression;
RotationExpression = rotationExpression;
}
public override void DrawFlashD3(Mat mat, SizeF xyPpmm, Point at, MCvScalar color, LineType lineType = LineType.EightConnected)
{
if (Coordinates.Length < 3) return;
if (Exposure == 0) color = EmguExtensions.BlackColor;
else if (color.V0 == 0) color = EmguExtensions.WhiteColor;
var points = new List<Point>();
for (int i = 0; i < Coordinates.Length-1; i++)
{
var pt = new Point(
at.X + (int)(Coordinates[i].X * xyPpmm.Width),
at.Y + (int)(Coordinates[i].Y * xyPpmm.Height)
);
if(i > 0 && points[i-1] == pt) continue; // Prevent duplicates
points.Add(pt);
}
using var vec = new VectorOfPoint(points.ToArray());
CvInvoke.FillPoly(mat, vec, color, lineType);
}
public override void ParseExpressions(params string[] args)
{
string csharpExp, result;
float num;
var exp = new DataTable();
if (byte.TryParse(ExposureExpression, out var exposure)) Exposure = exposure;
else
{
csharpExp = string.Format(Regex.Replace(ExposureExpression, @"\$(\d+)", "{$1}"), args);
result = exp.Compute(csharpExp, null).ToString()!;
if (byte.TryParse(result, out var val)) Exposure = val;
}
float? x = null;
var coordinates = new List<PointF>();
foreach (var coordinate in CoordinatesExpression)
{
if (!float.TryParse(coordinate, out num))
{
csharpExp = string.Format(Regex.Replace(coordinate, @"\$(\d+)", "{$1}"), args);
result = exp.Compute(csharpExp, null).ToString()!;
float.TryParse(result, out num);
}
if (x is null)
{
x = num;
}
else
{
coordinates.Add(new PointF(x.Value, num));
x = null;
}
}
Coordinates = coordinates.ToArray();
if (float.TryParse(RotationExpression, out num)) Rotation = (short)num;
else
{
csharpExp = Regex.Replace(RotationExpression, @"\$(\d+)", "{$1}");
csharpExp = string.Format(csharpExp, args);
result = exp.Compute(csharpExp, null).ToString()!;
if (float.TryParse(result, out num)) Rotation = num;
}
IsParsed = true;
}
}
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