/// <summary>
/// Initializes a new instance of the <see cref="ResizeProcessor{TPixel}"/> class.
/// </summary>
/// <param name="options">The resize options</param>
/// <param name="sourceSize">The source image size</param>
public ResizeProcessor(ResizeOptions options, Size sourceSize)
{
Guard.NotNull(options, nameof(options));
Guard.NotNull(options.Sampler, nameof(options.Sampler));
int targetWidth = options.Size.Width;
int targetHeight = options.Size.Height;
// Ensure size is populated across both dimensions.
// These dimensions are used to calculate the final dimensions determined by the mode algorithm.
// If only one of the incoming dimensions is 0, it will be modified here to maintain aspect ratio.
// If it is not possible to keep aspect ratio, make sure at least the minimum is is kept.
const int min = 1;
if (targetWidth == 0 && targetHeight > 0)
{
targetWidth = (int)MathF.Max(min, MathF.Round(sourceSize.Width * targetHeight / (float)sourceSize.Height));
}
if (targetHeight == 0 && targetWidth > 0)
{
targetHeight = (int)MathF.Max(min, MathF.Round(sourceSize.Height * targetWidth / (float)sourceSize.Width));
}
Guard.MustBeGreaterThan(targetWidth, 0, nameof(targetWidth));
Guard.MustBeGreaterThan(targetHeight, 0, nameof(targetHeight));
(Size size, Rectangle rectangle) = ResizeHelper.CalculateTargetLocationAndBounds(sourceSize, options, targetWidth, targetHeight);
this.Sampler = options.Sampler;
this.Width = size.Width;
this.Height = size.Height;
this.ResizeRectangle = rectangle;
this.Compand = options.Compand;
}
/// <summary>
/// Initializes a new instance of the <see cref="ResizeProcessor{TPixel}"/> class.
/// </summary>
/// <param name="options">The resize options</param>
/// <param name="sourceSize">The source image size</param>
public ResizeProcessor(ResizeOptions options, Size sourceSize)
{
Guard.NotNull(options, nameof(options));
Guard.NotNull(options.Sampler, nameof(options.Sampler));
int tempWidth = options.Size.Width;
int tempHeight = options.Size.Height;
// Ensure size is populated across both dimensions.
// These dimensions are used to calculate the final dimensions determined by the mode algorithm.
if (tempWidth == 0 && tempHeight > 0)
{
tempWidth = (int)MathF.Round(sourceSize.Width * tempHeight / (float)sourceSize.Height);
}
if (tempHeight == 0 && tempWidth > 0)
{
tempHeight = (int)MathF.Round(sourceSize.Height * tempWidth / (float)sourceSize.Width);
}
Guard.MustBeGreaterThan(tempWidth, 0, nameof(tempWidth));
Guard.MustBeGreaterThan(tempHeight, 0, nameof(tempHeight));
(Size size, Rectangle rectangle) = ResizeHelper.CalculateTargetLocationAndBounds(sourceSize, options, tempWidth, tempHeight);
this.Sampler = options.Sampler;
this.Width = size.Width;
this.Height = size.Height;
this.ResizeRectangle = rectangle;
this.Compand = options.Compand;
}
/// <summary>
/// Initializes a new instance of the <see cref="ResizeProcessor"/> class.
/// </summary>
/// <param name="options">The resize options.</param>
/// <param name="sourceSize">The source image size.</param>
public ResizeProcessor(ResizeOptions options, Size sourceSize)
{
Guard.NotNull(options, nameof(options));
Guard.NotNull(options.Sampler, nameof(options.Sampler));
(Size size, Rectangle rectangle) = ResizeHelper.CalculateTargetLocationAndBounds(sourceSize, options);
this.Sampler = options.Sampler;
this.TargetWidth = size.Width;
this.TargetHeight = size.Height;
this.TargetRectangle = rectangle;
this.Compand = options.Compand;
}