/// <summary>
/// Gets the information needed to draw this image onto a area.
/// </summary>
/// <returns>The steps necessary to draw this image with origin (0, 0)</returns>
public IEnumerable <(TextureSlice source, TextureSlice destination)> DrawingPrimitives(TextureSlice area)
{
var borderThickness = CalculateBorder(area.Size);
// Top Left
yield return(
TextureSlice.FromTwoPoints(
(0, 0),
topLeft
),
new TextureSlice(
0,
0,
borderThickness,
borderThickness
) + area.TopLeft
);
// Top Center
yield return(
TextureSlice.FromTwoPoints(
(topLeft.X, 0),
(topRight.X, topRight.Y)
),
new TextureSlice(
borderThickness,
0,
squeezeCenterWidth(area.Width, borderThickness),
borderThickness
) + area.TopLeft
);
// Top Right
yield return(
TextureSlice.FromTwoPoints(
(topRight.X, 0),
(Texture.Width, topRight.Y)
),
new TextureSlice(
area.Width - borderThickness,
0,
borderThickness,
borderThickness
) + area.TopLeft
);
// Center Left
yield return(
TextureSlice.FromTwoPoints(
(0, topLeft.Y),
bottomLeft
),
new TextureSlice(
0,
borderThickness,
borderThickness,
squeezeCenterHeight(area.Height, borderThickness)
) + area.TopLeft
);
// Center
yield return(
TextureSlice.FromTwoPoints(
topLeft,
bottomRight
),
new TextureSlice(
borderThickness,
borderThickness,
squeezeCenterWidth(area.Width, borderThickness),
squeezeCenterHeight(area.Height, borderThickness)
) + area.TopLeft
);
// Center Right
yield return(
TextureSlice.FromTwoPoints(
topRight,
(Texture.Width, bottomRight.Y)
),
new TextureSlice(
area.Width - borderThickness,
borderThickness,
borderThickness,
squeezeCenterHeight(area.Height, borderThickness)
) + area.TopLeft
);
// Bottom Left
yield return(
TextureSlice.FromTwoPoints(
(0, bottomLeft.Y),
(bottomLeft.X, Texture.Height)
),
new TextureSlice(
0,
area.Height - borderThickness,
borderThickness,
borderThickness
) + area.TopLeft
);
// Bottom Center
yield return(
TextureSlice.FromTwoPoints(
(bottomLeft.X, bottomLeft.Y),
(bottomRight.X, Texture.Height)
),
new TextureSlice(
borderThickness,
area.Height - borderThickness,
squeezeCenterWidth(area.Width, borderThickness),
borderThickness
) + area.TopLeft
);
// Bottom Center
yield return(
TextureSlice.FromTwoPoints(
bottomRight,
(Texture.Width, Texture.Height)
),
new TextureSlice(
area.Width - borderThickness,
area.Height - borderThickness,
borderThickness,
borderThickness
) + area.TopLeft
);
}
/// <summary>
/// Gets the information needed to draw this image onto a area.
/// </summary>
/// <returns>The steps necessary to draw this image with origin (0, 0)</returns>
public IEnumerable <(TextureSlice source, TextureSlice destination)> DrawingPrimitives(TextureSlice area)
{
var borderThickness = this.CalculateBorder(area.Size);
// Left border
yield return(
TextureSlice.FromTwoPoints(
(0, 0),
(left, Texture.Height)
),
new TextureSlice(
0,
0,
borderThickness,
area.Height
) + area.TopLeft
);
// Center (stretching part)
yield return(
TextureSlice.FromTwoPoints(
(left, 0),
(right, Texture.Height)
),
new TextureSlice(
borderThickness,
0,
area.Width - 2 * borderThickness,
area.Height
) + area.TopLeft
);
// Right border
yield return(
TextureSlice.FromTwoPoints(
(right, 0),
(Texture.Width, Texture.Height)
),
new TextureSlice(
area.Width - borderThickness,
0,
borderThickness,
area.Height
) + area.TopLeft
);
}
