69 lines
2.4 KiB
C#
69 lines
2.4 KiB
C#
// Copyright (c) Six Labors.
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// Licensed under the Six Labors Split License.
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namespace SixLabors.Fonts.Tables.General.Colr {
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/// <summary>
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/// Represents a variation-aware 2x3 affine transformation matrix used by COLR v1 PaintVarTransform operations.
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/// Values are stored as Fixed 16.16 numbers with an associated variation index base for font variations.
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/// <see href="https://learn.microsoft.com/en-us/typography/opentype/spec/colr#formats-12-and-13-painttransform-paintvartransform"/>
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/// </summary>
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internal readonly struct VarAffine2x3
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{
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/// <summary>
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/// The x-component of the x-basis vector.
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/// </summary>
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public readonly float Xx;
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/// <summary>
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/// The y-component of the x-basis vector.
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/// </summary>
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public readonly float Yx;
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/// <summary>
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/// The x-component of the y-basis vector.
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/// </summary>
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public readonly float Xy;
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/// <summary>
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/// The y-component of the y-basis vector.
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/// </summary>
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public readonly float Yy;
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/// <summary>
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/// The x-translation component.
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/// </summary>
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public readonly float Dx;
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/// <summary>
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/// The y-translation component.
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/// </summary>
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public readonly float Dy;
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/// <summary>
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/// The base index into the ItemVariationStore delta sets for this transform's variation data.
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/// </summary>
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public readonly uint VarIndexBase;
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/// <summary>
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/// Initializes a new instance of the <see cref="VarAffine2x3"/> struct.
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/// </summary>
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/// <param name="xx">The x-component of the x-basis vector.</param>
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/// <param name="yx">The y-component of the x-basis vector.</param>
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/// <param name="xy">The x-component of the y-basis vector.</param>
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/// <param name="yy">The y-component of the y-basis vector.</param>
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/// <param name="dx">The x-translation component.</param>
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/// <param name="dy">The y-translation component.</param>
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/// <param name="varIndexBase">The base index into the ItemVariationStore delta sets.</param>
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public VarAffine2x3(float xx, float yx, float xy, float yy, float dx, float dy, uint varIndexBase)
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{
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this.Xx = xx;
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this.Yx = yx;
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this.Xy = xy;
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this.Yy = yy;
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this.Dx = dx;
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this.Dy = dy;
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this.VarIndexBase = varIndexBase;
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}
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}
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}
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