Size3D.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / wpf / src / Core / CSharp / System / Windows / Media3D / Size3D.cs / 1305600 / Size3D.cs
                        
                        
                            //---------------------------------------------------------------------------- 
//
// 
//    Copyright (C) Microsoft Corporation.  All rights reserved.
//  
//
// 
// Description: 3D size implementation. 
//
// 
//
// History:
//  06/26/2003 : t-gregr - Created
// 
//---------------------------------------------------------------------------
 
using System.Windows; 
using System.Windows.Media.Media3D;
 
using System;

using SR=MS.Internal.PresentationCore.SR;
using SRID=MS.Internal.PresentationCore.SRID; 

namespace System.Windows.Media.Media3D 
{ 
    /// 
    /// Size3D - A value type which defined a size in terms of non-negative width, 
    /// length, and height.
    /// 
    public partial struct Size3D
    { 
        #region Constructors
 
        ///  
        /// Constructor which sets the size's initial values.  Values must be non-negative.
        ///  
        /// X dimension of the new size.
        /// Y dimension of the new size.
        /// Z dimension of the new size.
        public Size3D(double x, double y, double z) 
        {
            if (x < 0 || y < 0 || z < 0) 
            { 
                throw new System.ArgumentException(SR.Get(SRID.Size3D_DimensionCannotBeNegative));
            } 


            _x = x;
            _y = y; 
            _z = z;
        } 
 
        #endregion Constructors
 
        #region Statics

        /// 
        /// Empty - a static property which provides an Empty size.  X, Y, and Z are 
        /// negative-infinity.  This is the only situation
        /// where size can be negative. 
        ///  
        public static Size3D Empty
        { 
            get
            {
                return s_empty;
            } 
        }
 
        #endregion Statics 

        #region Public Methods and Properties 

        /// 
        /// IsEmpty - this returns true if this size is the Empty size.
        /// Note: If size is 0 this Size3D still contains a 0, 1, or 2 dimensional set 
        /// of points, so this method should not be used to check for 0 volume.
        ///  
        public bool IsEmpty 
        {
            get 
            {
                return _x < 0;
            }
        } 

        ///  
        /// Size in X dimension. Default is 0, must be non-negative. 
        /// 
        public double X 
        {
            get
            {
                return _x; 
            }
            set 
            { 
                if (IsEmpty)
                { 
                    throw new System.InvalidOperationException(SR.Get(SRID.Size3D_CannotModifyEmptySize));
                }

                if (value < 0) 
                {
                    throw new System.ArgumentException(SR.Get(SRID.Size3D_DimensionCannotBeNegative)); 
                } 

                _x = value; 
            }
        }

        ///  
        /// Size in Y dimension. Default is 0, must be non-negative.
        ///  
        public double Y 
        {
            get 
            {
                return _y;
            }
            set 
            {
                if (IsEmpty) 
                { 
                    throw new System.InvalidOperationException(SR.Get(SRID.Size3D_CannotModifyEmptySize));
                } 

                if (value < 0)
                {
                    throw new System.ArgumentException(SR.Get(SRID.Size3D_DimensionCannotBeNegative)); 
                }
 
                _y = value; 
            }
        } 


        /// 
        /// Size in Z dimension. Default is 0, must be non-negative. 
        /// 
        public double Z 
        { 
            get
            { 
                return _z;
            }
            set
            { 
                if (IsEmpty)
                { 
                    throw new System.InvalidOperationException(SR.Get(SRID.Size3D_CannotModifyEmptySize)); 
                }
 
                if (value < 0)
                {
                    throw new System.ArgumentException(SR.Get(SRID.Size3D_DimensionCannotBeNegative));
                } 

                _z = value; 
            } 
        }
 
        #endregion Public Methods

        #region Public Operators
 
        /// 
        /// Explicit conversion to Vector. 
        ///  
        /// The size to convert to a vector.
        /// A vector equal to this size. 
        public static explicit operator Vector3D(Size3D size)
        {
            return new Vector3D(size._x, size._y, size._z);
        } 

        ///  
        /// Explicit conversion to point. 
        /// 
        /// The size to convert to a point. 
        /// A point equal to this size.
        public static explicit operator Point3D(Size3D size)
        {
            return new Point3D(size._x, size._y, size._z); 
        }
 
        #endregion Public Operators 

        #region Private Methods 

        private static Size3D CreateEmptySize3D()
        {
            Size3D empty = new Size3D(); 
            // Can't use setters because they throw on negative values
            empty._x = Double.NegativeInfinity; 
            empty._y = Double.NegativeInfinity; 
            empty._z = Double.NegativeInfinity;
            return empty; 
        }

        #endregion Private Methods
 
        #region Private Fields
 
        private readonly static Size3D s_empty = CreateEmptySize3D(); 

        #endregion Private Fields 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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