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GtkSharp/Source/Libs/CairoSharp/Matrix.cs
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193
GtkSharp/Source/Libs/CairoSharp/Matrix.cs
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//
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// Mono.Cairo.Matrix.cs
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//
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// Author: Duncan Mak
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// Hisham Mardam Bey (hisham.mardambey@gmail.com)
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// Idan Gazit (idan@fastmail.fm)
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//
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// (C) Ximian Inc, 2003 - 2005.
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//
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// This is an OO wrapper API for the Cairo API
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//
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// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Runtime.InteropServices;
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namespace Cairo {
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[StructLayout(LayoutKind.Sequential)]
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public class Matrix : ICloneable
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{
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public double Xx;
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public double Yx;
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public double Xy;
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public double Yy;
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public double X0;
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public double Y0;
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public Matrix (double xx, double yx, double xy, double yy,
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double x0, double y0)
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{
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this.Xx = xx; this.Yx = yx; this.Xy = xy;
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this.Yy = yy; this.X0 = x0; this.Y0 = y0;
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}
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public Matrix ()
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{
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this.InitIdentity ();
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}
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public bool IsIdentity ()
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{
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return (this == new Matrix ());
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}
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public void InitIdentity ()
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{
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// this.Init(1,0,0,1,0,0);
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NativeMethods.cairo_matrix_init_identity (this);
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}
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public void Init (double xx, double yx, double xy, double yy,
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double x0, double y0)
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{
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this.Xx = xx; this.Yx = yx; this.Xy = xy;
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this.Yy = yy; this.X0 = x0; this.Y0 = y0;
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}
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public void InitTranslate (double tx, double ty)
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{
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//this.Init (1, 0, 0, 1, tx, ty);
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NativeMethods.cairo_matrix_init_translate (this, tx, ty);
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}
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public void Translate (double tx, double ty)
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{
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NativeMethods.cairo_matrix_translate (this, tx, ty);
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}
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public void InitScale (double sx, double sy)
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{
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//this.Init (sx, 0, 0, sy, 0, 0);
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NativeMethods.cairo_matrix_init_scale (this, sx, sy);
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}
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public void Scale (double sx, double sy)
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{
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NativeMethods.cairo_matrix_scale (this, sx, sy);
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}
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public void InitRotate (double radians)
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{
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/*
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double s, c;
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s = Math.Sin (radians);
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c = Math.Cos (radians);
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this.Init (c, s, -s, c, 0, 0);
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*/
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NativeMethods.cairo_matrix_init_rotate (this, radians);
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}
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public void Rotate (double radians)
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{
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NativeMethods.cairo_matrix_rotate (this, radians);
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}
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public Cairo.Status Invert ()
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{
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return NativeMethods.cairo_matrix_invert (this);
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}
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public void Multiply (Matrix b)
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{
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Matrix a = (Matrix) this.Clone ();
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NativeMethods.cairo_matrix_multiply (this, a, b);
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}
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public static Matrix Multiply (Matrix a, Matrix b) {
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Matrix result = new Matrix ();
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NativeMethods.cairo_matrix_multiply (result, a, b);
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return result;
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}
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public void TransformDistance (ref double dx, ref double dy)
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{
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NativeMethods.cairo_matrix_transform_distance (this, ref dx, ref dy);
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}
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public void TransformPoint (ref double x, ref double y)
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{
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NativeMethods.cairo_matrix_transform_point (this, ref x, ref y);
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}
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public override String ToString ()
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{
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String s = String.Format ("xx:{0:##0.0#} yx:{1:##0.0#} xy:{2:##0.0#} yy:{3:##0.0#} x0:{4:##0.0#} y0:{5:##0.0#}",
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this.Xx, this.Yx, this.Xy, this.Yy, this.X0, this.Y0);
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return s;
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}
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public static bool operator == (Matrix lhs, Matrix rhs)
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{
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return (lhs.Xx == rhs.Xx &&
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lhs.Xy == rhs.Xy &&
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lhs.Yx == rhs.Yx &&
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lhs.Yy == rhs.Yy &&
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lhs.X0 == rhs.X0 &&
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lhs.Y0 == rhs.Y0 );
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}
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public static bool operator != (Matrix lhs, Matrix rhs)
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{
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return !(lhs==rhs);
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}
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public override bool Equals(object o)
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{
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if (! (o is Matrix))
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return false;
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else
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return (this == (Matrix) o);
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}
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public override int GetHashCode()
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{
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return (int)this.Xx ^ (int)this.Xx>>32 ^
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(int)this.Xy ^ (int)this.Xy>>32 ^
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(int)this.Yx ^ (int)this.Yx>>32 ^
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(int)this.Yy ^ (int)this.Yy>>32 ^
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(int)this.X0 ^ (int)this.X0>>32 ^
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(int)this.Y0 ^ (int)this.Y0>>32;
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}
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public object Clone()
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{
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return this.MemberwiseClone ();
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}
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}
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}
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