Matrix3DStack.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Core / System / Windows / Media3D / Matrix3DStack.cs / 1 / Matrix3DStack.cs
                        

                        
                            //---------------------------------------------------------------------------- 
//
// 
//    Copyright (c) Microsoft Corporation.  All rights reserved.
//  
//
// Description: This is a super simple Matrix3DStack implementation. 
//              MatrixStack (2D) is optimized to avoid boxig and copying 
//              of structs.  This was written as a stop-gap to address
//              a bug until we can use CodeGen here. 
//
// History:
//  1/19/2004 : [....] - Created
// 
//---------------------------------------------------------------------------
 
using System; 
using System.Collections;
using System.Collections.Generic; 

namespace System.Windows.Media.Media3D
{
    // 

 
 

    internal class Matrix3DStack 
    {
        //-----------------------------------------------------
        //
        //  Constructors 
        //
        //----------------------------------------------------- 
 
        //------------------------------------------------------
        // 
        //  Public Methods
        //
        //-----------------------------------------------------
 
        public void Clear()
        { 
            _stack.Clear(); 
        }
 
        public Matrix3D Pop()
        {
            Matrix3D top = Top;
            _stack.RemoveAt(_stack.Count - 1); 
            return top;
        } 
 
        /// 
        /// Empty => [matrix] 
        /// tail | [top] => tail | [top] | [matrix * top]
        /// 
        public void Push(Matrix3D matrix)
        { 
            if (_stack.Count > 0)
            { 
                matrix.Append(Top); 
            }
            _stack.Add(matrix); 
        }

        /// 
        /// stack = stack | [matrix] 
        /// 
        public void PushWithoutAccumulating(Matrix3D matrix) 
        { 
            _stack.Add(matrix);
        } 

        //------------------------------------------------------
        //
        //  Public Properties 
        //
        //------------------------------------------------------ 
 
        public int Count
        { 
            get
            {
                return _stack.Count;
            } 
        }
 
        public bool IsEmpty 
        {
            get 
            {
                return (_stack.Count == 0);
            }
        } 

        public Matrix3D Top 
        { 
            get
            { 
                return _stack[_stack.Count - 1];
            }
        }
 
        //-----------------------------------------------------
        // 
        //  Public Events 
        //
        //------------------------------------------------------ 

        //-----------------------------------------------------
        //
        //  Private Fields 
        //
        //----------------------------------------------------- 
 
        #region Private Fields
 
        private readonly List _stack = new List();

        #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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