Transform2D.cs

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00001 /*
00002 NPlot - A charting library for .NET
00003 
00004 Transform2D.cs
00005 Copyright (C) 2003
00006 Matt Howlett
00007 
00008 Redistribution and use of NPlot or parts there-of in source and
00009 binary forms, with or without modification, are permitted provided
00010 that the following conditions are met:
00011 
00012 1. Re-distributions in source form must retain at the head of each
00013    source file the above copyright notice, this list of conditions
00014    and the following disclaimer.
00015 
00016 2. Any product ("the product") that makes use NPlot or parts 
00017    there-of must either:
00018   
00019     (a) allow any user of the product to obtain a complete machine-
00020         readable copy of the corresponding source code for the 
00021         product and the version of NPlot used for a charge no more
00022         than your cost of physically performing source distribution,
00023         on a medium customarily used for software interchange, or:
00024 
00025     (b) reproduce the following text in the documentation, about 
00026         box or other materials intended to be read by human users
00027         of the product that is provided to every human user of the
00028         product: 
00029    
00030               "This product includes software developed as 
00031               part of the NPlot library project available 
00032               from: http://www.nplot.com/" 
00033 
00034         The words "This product" may optionally be replace with 
00035         the actual name of the product.
00036 
00037 ------------------------------------------------------------------------
00038 
00039 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
00040 IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00041 OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
00042 IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
00043 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
00044 NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00045 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00046 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00047 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
00048 THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00049 
00050 */
00051 
00052 using System;
00053 using System.Drawing;
00054 
00055 namespace NPlot
00056 {
00057 
00062         public class Transform2D
00063         {
00064 
00071                 public static ITransform2D GetTransformer( PhysicalAxis xAxis, PhysicalAxis yAxis )
00072                 {
00073                         ITransform2D ret = null;
00074 
00075 //                      if (xAxis.Axis.IsLinear && yAxis.Axis.IsLinear && !xAxis.Axis.Reversed && !yAxis.Axis.Reversed)
00076 //                              ret = new FastTransform2D( xAxis, yAxis );
00077 //                      else 
00078 //                              ret = new DefaultTransform2D( xAxis, yAxis );
00079 
00080                         ret = new DefaultTransform2D( xAxis, yAxis );
00081 
00082                         return ret;
00083                 }
00084 
00085 
00089                 public class DefaultTransform2D : ITransform2D
00090                 {
00091                         private PhysicalAxis xAxis_;
00092                         private PhysicalAxis yAxis_;
00093 
00099                         public DefaultTransform2D( PhysicalAxis xAxis, PhysicalAxis yAxis )
00100                         {
00101                                 xAxis_ = xAxis;
00102                                 yAxis_ = yAxis;
00103                         }
00104 
00105 
00112                         public PointF Transform( double x, double y )
00113                         {
00114                                 return new PointF(
00115                                         xAxis_.WorldToPhysical( x, true ).X,
00116                                         yAxis_.WorldToPhysical( y, true ).Y );
00117                         }
00118 
00119 
00125                         public PointF Transform( PointD worldPoint )
00126                         {
00127                                 return new PointF( 
00128                                         xAxis_.WorldToPhysical( worldPoint.X, true ).X,
00129                                         yAxis_.WorldToPhysical( worldPoint.Y, true ).Y );
00130                         }
00131 
00132                 }
00133         
00134 
00135 
00136 
00141                 public class FastTransform2D : ITransform2D
00142                 {
00143 
00144                         private PageAlignedPhysicalAxis xAxis_;
00145                         private PageAlignedPhysicalAxis yAxis_;
00146 
00147 
00153                         public FastTransform2D( PhysicalAxis xAxis, PhysicalAxis yAxis )
00154                         {
00155                                 xAxis_ = new PageAlignedPhysicalAxis( xAxis );
00156                                 yAxis_ = new PageAlignedPhysicalAxis( yAxis );
00157                         }
00158 
00159 
00166                         public PointF Transform( double x, double y )
00167                         {
00168                                 return new PointF(
00169                                         xAxis_.WorldToPhysicalClipped( x ),
00170                                         yAxis_.WorldToPhysicalClipped( y ) );
00171                         }
00172 
00173 
00179                         public PointF Transform( PointD worldPoint )
00180                         {
00181                                 return new PointF( 
00182                                         xAxis_.WorldToPhysical( worldPoint.X ),
00183                                         yAxis_.WorldToPhysical( worldPoint.Y ) );
00184                         }
00185 
00186                 }
00187 
00188 
00189         }
00190 }

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