// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
#if NET9_0_OR_GREATER
 
namespace System.Drawing.Imaging.Effects;
 
/// <summary>
///  Sharpens an image.
/// </summary>
public unsafe class SharpenEffect : Effect
{
    private readonly SharpenParams _sharpenParams;
 
    /// <summary>
    ///  Creates a new <see cref="SharpenEffect"/> with the given parameters.
    /// </summary>
    /// <param name="radius">
    ///  Real number that specifies the sharpening radius (the radius of the convolution kernel) in pixels. The radius
    ///  must be in the range 0 through 256. As the radius increases, more surrounding pixels are involved in calculating
    ///  the new value of a given pixel.
    /// </param>
    /// <param name="amount">
    ///  Real number in the range 0 through 100 that specifies the amount of sharpening to be applied. A value of 0
    ///  specifies no sharpening. As the value of amount increases, the sharpness increases.
    /// </param>
    /// <exception cref="ArgumentException">
    ///  <paramref name="radius"/> is less than 0 or greater than 256 or <paramref name="amount"/> is less than 0
    ///  or greater than 100.
    /// </exception>
    public SharpenEffect(float radius, float amount) : base(PInvoke.SharpenEffectGuid)
    {
        _sharpenParams = new() { radius = radius, amount = amount };
        SetParameters(ref _sharpenParams);
    }
 
    /// <summary>
    ///  Real number that specifies the sharpening radius (the radius of the convolution kernel) in pixels. The radius
    ///  must be in the range 0 through 256. As the radius increases, more surrounding pixels are involved in calculating
    ///  the new value of a given pixel.
    /// </summary>
    public float Radius => _sharpenParams.radius;
 
    /// <summary>
    ///  Real number in the range 0 through 100 that specifies the amount of sharpening to be applied. A value of 0
    ///  specifies no sharpening. As the value of amount increases, the sharpness increases.
    /// </summary>
    public float Amount => _sharpenParams.amount;
}
#endif