mirror of
https://github.com/DarthAffe/RGB.NET.git
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99 lines
3.7 KiB
C#
99 lines
3.7 KiB
C#
// ReSharper disable MemberCanBePrivate.Global
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// ReSharper disable MemberCanBeProtected.Global
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// ReSharper disable ReturnTypeCanBeEnumerable.Global
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// ReSharper disable AutoPropertyCanBeMadeGetOnly.Global
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// ReSharper disable UnusedMember.Global
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using System;
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using RGB.NET.Core;
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using RGB.NET.Presets.Textures.Gradients;
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namespace RGB.NET.Presets.Textures
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{
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/// <inheritdoc />
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/// <summary>
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/// Represents a brush drawing a conical gradient.
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/// </summary>
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public sealed class ConicalGradientTexture : AbstractGradientTexture
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{
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#region Constants
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private const double PI2 = Math.PI * 2;
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#endregion
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#region Properties & Fields
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private double _origin = Math.Atan2(-1, 0);
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/// <summary>
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/// Gets or sets the origin (radian-angle) this <see cref="ConicalGradientTexture"/> is drawn to. (default: -π/2)
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/// </summary>
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public double Origin
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{
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get => _origin;
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set => SetProperty(ref _origin, value);
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}
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private Point _center = new(0.5, 0.5);
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/// <summary>
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/// Gets or sets the center <see cref="Point"/> (as percentage in the range [0..1]) of the <see cref="IGradient"/> drawn by this <see cref="ConicalGradientTexture"/>. (default: 0.5, 0.5)
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/// </summary>
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public Point Center
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{
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get => _center;
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set => SetProperty(ref _center, value);
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}
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#endregion
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#region Constructors
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/// <summary>
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/// Initializes a new instance of the <see cref="T:RGB.NET.Presets.Textures.ConicalGradientTexture" /> class.
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/// </summary>
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/// <param name="gradient">The <see cref="T:RGB.NET.Presets.Gradients.IGradient" /> drawn by this <see cref="T:RGB.NET.Presets.Textures.ConicalGradientTexture" />.</param>
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public ConicalGradientTexture(Size size, IGradient gradient)
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: base(size, gradient)
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{ }
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/// <summary>
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/// Initializes a new instance of the <see cref="T:RGB.NET.Presets.Textures.ConicalGradientTexture" /> class.
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/// </summary>
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/// <param name="center">The center <see cref="T:RGB.NET.Core.Point" /> (as percentage in the range [0..1]).</param>
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/// <param name="gradient">The <see cref="T:RGB.NET.Presets.Gradients.IGradient" /> drawn by this <see cref="T:RGB.NET.Presets.Textures.ConicalGradientTexture" />.</param>
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public ConicalGradientTexture(Size size, IGradient gradient, Point center)
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: base(size, gradient)
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{
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this.Center = center;
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="T:RGB.NET.Presets.Textures.ConicalGradientTexture" /> class.
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/// </summary>
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/// <param name="center">The center <see cref="T:RGB.NET.Core.Point" /> (as percentage in the range [0..1]).</param>
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/// <param name="origin">The origin (radian-angle) the <see cref="T:RGB.NET.Core.IBrush" /> is drawn to.</param>
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/// <param name="gradient">The <see cref="T:RGB.NET.Presets.Gradients.IGradient" /> drawn by this <see cref="T:RGB.NET.Presets.Textures.ConicalGradientTexture" />.</param>
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public ConicalGradientTexture(Size size, IGradient gradient, Point center, float origin)
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: base(size, gradient)
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{
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this.Center = center;
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this.Origin = origin;
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}
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#endregion
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#region Methods
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protected override Color GetColor(in Point point)
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{
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double angle = Math.Atan2(point.Y - Center.Y, point.X - Center.X) - Origin;
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if (angle < 0) angle += PI2;
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double offset = angle / PI2;
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return Gradient.GetColor(offset);
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}
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#endregion
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}
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}
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