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Root/src/Design/QuaternionConverter.cs

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#region License
/* FNA - XNA4 Reimplementation for Desktop Platforms
 * Copyright 2009-2016 Ethan Lee and the MonoGame Team
 *
 * Released under the Microsoft Public License.
 * See LICENSE for details.
 */
#endregion
 
#region Using Statements
using System;
using System.Collections;
using System.ComponentModel;
using System.Globalization;
#endregion
 
namespace Microsoft.Xna.Framework.Design
{
    public class QuaternionConverter : MathTypeConverter
    {
        #region Public Constructor
 
        public QuaternionConverter() : base()
        {
            // FIXME: Initialize propertyDescriptions... how? -flibit
        }
 
        #endregion
 
        #region Public Methods
 
        public override object ConvertFrom(
            ITypeDescriptorContext context,
            CultureInfo culture,
            object value
        ) {
            string s = value as string;
            if (s != null)
            {
                string[] v = s.Split(
                    culture.NumberFormat.NumberGroupSeparator.ToCharArray()
                );
                return new Quaternion(
                    float.Parse(v[0], culture),
                    float.Parse(v[1], culture),
                    float.Parse(v[2], culture),
                    float.Parse(v[3], culture)
                );
            }
            return base.ConvertFrom(context, culture, value);
        }
 
        public override object ConvertTo(
            ITypeDescriptorContext context,
            CultureInfo culture,
            object value,
            Type destinationType
        ) {
            if (destinationType == typeof(string))
            {
                Quaternion quat = (Quaternion) value;
                return string.Join(
                    culture.NumberFormat.NumberGroupSeparator,
                    new string[]
                    {
                        quat.X.ToString(culture),
                        quat.Y.ToString(culture),
                        quat.Z.ToString(culture),
                        quat.W.ToString(culture)
                    }
                );
            }
            return base.ConvertTo(context, culture, value, destinationType);
        }
 
        public override object CreateInstance(
            ITypeDescriptorContext context,
            IDictionary propertyValues
        ) {
            return (object) new Quaternion(
                (float) propertyValues["X"],
                (float) propertyValues["Y"],
                (float) propertyValues["Z"],
                (float) propertyValues["W"]
            );
        }
 
        #endregion
    }
}

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