Creates a HSV brush. - CSharp System.Windows.Media

CSharp examples for System.Windows.Media:Brush

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Description

Creates a HSV brush.

Demo Code


using System.Windows.Media;
using System.Windows;
using System.Linq;
using System.Collections.Generic;

public class Main{
        // http://en.wikipedia.org/wiki/HSL_and_HSV
        /// <summary>
        /// Creates a HSV brush.
        /// </summary>
        /// <param name="alpha">The opacity (0-1).</param>
        /// <param name="horizontal">if set to <c>true</c> [horizontal].</param>
        /// <returns>LinearGradientBrush.</returns>
        public static LinearGradientBrush CreateHsvBrush(double alpha = 1, bool horizontal = true)
        {//w w w .  j  ava  2  s. co  m
            var a = (byte)(alpha * 255);
            var brush = new LinearGradientBrush { StartPoint = new Point(0, 0), EndPoint = horizontal ? new Point(1, 0) : new Point(0, 1) };
            brush.GradientStops.Add(new GradientStop(Color.FromArgb(a, 0xff, 0x00, 0x00), 0.00));
            brush.GradientStops.Add(new GradientStop(Color.FromArgb(a, 0xff, 0xff, 0x00), 0.17));
            brush.GradientStops.Add(new GradientStop(Color.FromArgb(a, 0x00, 0xff, 0x00), 0.33));
            brush.GradientStops.Add(new GradientStop(Color.FromArgb(a, 0x00, 0xff, 0xff), 0.50));
            brush.GradientStops.Add(new GradientStop(Color.FromArgb(a, 0x00, 0x00, 0xff), 0.67));
            brush.GradientStops.Add(new GradientStop(Color.FromArgb(a, 0xff, 0x00, 0xff), 0.84));
            brush.GradientStops.Add(new GradientStop(Color.FromArgb(a, 0xff, 0x00, 0x00), 1.00));
            return brush;
        }
}

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