68 lines
2.6 KiB
C#
68 lines
2.6 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Text;
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using QuantumConcepts.Formats.StereoLithography;
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using System.Globalization;
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namespace QuantumConcepts.Formats.StereoLithography
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{
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/// <summary>A simple XYZ representation of a normal (<see cref="Vertex"/>).</summary>
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public class Normal : Vertex
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{
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/// <summary>Creates a new, empty <see cref="Normal"/>.</summary>
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public Normal() : base() { }
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/// <summary>Creates a new <see cref="Normal"/> using the provided coordinates.</summary>
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public Normal(float x, float y, float z) : base(x, y, z) { }
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/// <summary>Flips the normal so it faces the opposite direction.</summary>
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public void Invert()
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{
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this.X *= -1;
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this.Y *= -1;
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this.Z *= -1;
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}
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/// <summary>Returns the string representation of this <see cref="Normal"/>.</summary>
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public override string ToString()
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{
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//return "normal {0} {1} {2}".FormatString(this.X, this.Y, this.Z);
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return String.Format(CultureInfo.InvariantCulture, "normal {0} {1} {2}", this.X, this.Y, this.Z);
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}
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/// <summary>Reads a single <see cref="Normal"/> from the <paramref name="reader"/>.</summary>
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/// <param name="reader">The reader which contains a <see cref="Normal"/> to be read at the current position</param>
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public static Normal Read(StreamReader reader)
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{
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return Normal.FromVertex(Vertex.Read(reader));
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}
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/// <summary>Reads a single <see cref="Normal"/> from the <paramref name="reader"/>.</summary>
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/// <param name="reader">The reader which contains a <see cref="Normal"/> to be read at the current position</param>
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public static Normal Read(BinaryReader reader)
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{
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return Normal.FromVertex(Vertex.Read(reader));
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}
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/// <summary>Converts the <paramref name="vertex"/> to a normal.</summary>
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/// <remarks>This does nothing more than copy the X, Y and Z coordinates of the <paramref name="vertex"/> into a new <see cref="Normal"/> instance.</remarks>
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/// <param name="vertex">The <see cref="Vertex"/> to be converted into a <see cref="Normal"/>.</param>
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/// <returns>A <see cref="Normal"/> or null if the <paramref name="vertex"/> is null.</returns>
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public static Normal FromVertex(Vertex vertex)
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{
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if (vertex == null)
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return null;
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return new Normal()
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{
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X = vertex.X,
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Y = vertex.Y,
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Z = vertex.Z
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};
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}
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}
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}
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