[cogl/wip/cogl-sharp: 16/42] cogl-sharp: Bind part of CoglMatrix

[Damien Lespiau <dlespiau src gnome org>]

commit ea14ef4e7a0f1dd6ec2807173cc1a9971c6f5261
Author: Damien Lespiau <damien lespiau intel com>
Date:   Sat Sep 29 23:07:40 2012 +0100

    cogl-sharp: Bind part of CoglMatrix
    
    And really just a start of the unit tests.

 cogl-sharp/Makefile.am         |    2 +
 cogl-sharp/Matrix.cs           |  173 ++++++++++++++++++++++++++++++++++++++++
 cogl-sharp/tests/TestMatrix.cs |   44 ++++++++++
 3 files changed, 219 insertions(+), 0 deletions(-)
---
diff --git a/cogl-sharp/Makefile.am b/cogl-sharp/Makefile.am
index 3cb9380..7103083 100644
--- a/cogl-sharp/Makefile.am
+++ b/cogl-sharp/Makefile.am
@@ -6,6 +6,7 @@ pkgconfig_DATA = cogl2-sharp.pc
 
 sources =		\
 	Color.cs	\
+	Matrix.cs	\
 	AssemblyInfo.cs	\
 	$(NULL)
 
@@ -38,6 +39,7 @@ launch-tests: CoglTests.dll
 
 tests_sources =			\
 	tests/TestColor.cs	\
+	tests/TestMatrix.cs	\
 	$(NULL)
 
 CoglTests.dll: $(tests_sources)
diff --git a/cogl-sharp/Matrix.cs b/cogl-sharp/Matrix.cs
new file mode 100644
index 0000000..47ee23b
--- /dev/null
+++ b/cogl-sharp/Matrix.cs
@@ -0,0 +1,173 @@
+/*
+ * Cogl
+ *
+ * An object oriented GL/GLES Abstraction/Utility Layer
+ *
+ * Copyright (C) 2012 Intel Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see
+ * <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *   Aaron Bockover <abockover novell com>
+ *   Damien Lespiau <damien lespiau intel com>
+ */
+
+using System;
+using System.Runtime.InteropServices;
+
+namespace Cogl
+{
+    [StructLayout(LayoutKind.Sequential)]
+    public struct Matrix
+    {
+        /* column 0 */
+        public float xx;
+        public float yx;
+        public float zx;
+        public float wx;
+
+        /* column 1 */
+        public float xy;
+        public float yy;
+        public float zy;
+        public float wy;
+
+        /* column 2 */
+        public float xz;
+        public float yz;
+        public float zz;
+        public float wz;
+
+        /* column 3 */
+        public float xw;
+        public float yw;
+        public float zw;
+        public float ww;
+
+        /* Those fields are only accessed from the native side, so let's disable the
+         * unused warning */
+#pragma warning disable 169
+        private UInt16 type;
+        private UInt16 flags;
+#pragma warning restore 169
+
+        public float[] GetArray()
+        {
+            throw new NotImplementedException();
+        }
+
+        [DllImport("cogl2.dll")]
+        private static extern void cogl_matrix_init_identity(ref Matrix matrix);
+
+        public void InitIdentity()
+        {
+            cogl_matrix_init_identity(ref this);
+        }
+
+        [DllImport("cogl2.dll")]
+        private static extern void cogl_matrix_init_translation(ref Matrix matrix,
+                                                                float tx,
+                                                                float ty,
+                                                                float tz);
+
+        public void InitTranslation(float tx, float ty, float tz)
+        {
+            cogl_matrix_init_translation(ref this, tz, ty, tz);
+        }
+
+        [DllImport("cogl2.dll")]
+        private static extern void cogl_matrix_init_from_array(ref Matrix matrix,
+                                                               float[] array);
+
+        public void InitFromArray(float[] array)
+        {
+            cogl_matrix_init_from_array(ref this, array);
+        }
+
+        [DllImport("cogl2.dll")]
+        private static extern void cogl_matrix_rotate(ref Matrix matrix,
+                                                      float angle,
+                                                      float x, float y, float z);
+
+        public void Rotate(float angle, float x, float y, float z)
+        {
+            cogl_matrix_rotate(ref this, angle, x, y, z);
+        }
+
+        [DllImport("cogl2.dll")]
+        private static extern void cogl_matrix_frustum(ref Matrix matrix,
+                                                       float left, float right,
+                                                       float bottom, float top,
+                                                       float z_near, float z_far);
+
+        public void Frustum(float left, float right,
+                            float bottom, float top,
+                            float z_near, float z_far)
+        {
+            cogl_matrix_frustum(ref this, left, right, bottom, top, z_near, z_far);
+        }
+
+        [DllImport("cogl2.dll")]
+        private static extern void cogl_matrix_transform_point(ref Matrix matrix,
+                                                               out float x,
+                                                               out float y,
+                                                               out float z,
+                                                               out float w);
+
+        public void TransformPoint(out float x, out float y, out float z, out float w)
+        {
+            cogl_matrix_transform_point(ref this, out x, out y, out z, out w);
+        }
+
+        [DllImport("cogl2.dll")]
+        private static extern void cogl_matrix_multiply(ref Matrix matrix,
+                                                        ref Matrix a,
+                                                        ref Matrix b);
+
+        public void Multiply(Matrix a, Matrix b)
+        {
+            cogl_matrix_multiply(ref this, ref a, ref b);
+        }
+
+        [DllImport("cogl2.dll")]
+        private static extern void cogl_matrix_translate(ref Matrix matrix,
+                                                         float x,
+                                                         float y,
+                                                         float z);
+
+        public void Translate(float x, float y, float z)
+        {
+            cogl_matrix_translate(ref this, x, y, z);
+        }
+
+        [DllImport ("cogl2.dll")]
+        private static extern void cogl_matrix_scale(ref Matrix matrix,
+                                                     float sx, float sy, float sz);
+
+        public void Scale(float sx, float sy, float sz)
+        {
+            cogl_matrix_scale(ref this, sx, sy, sz);
+        }
+
+        [DllImport ("cogl2.dll")]
+        private static extern int cogl_matrix_get_inverse(ref Matrix matrix,
+                                                          ref Matrix inverse);
+
+        public bool GetInverse(ref Matrix inverse)
+        {
+           return  cogl_matrix_get_inverse(ref this, ref inverse) == 0 ? false : true;
+        }
+    }
+}
diff --git a/cogl-sharp/tests/TestMatrix.cs b/cogl-sharp/tests/TestMatrix.cs
new file mode 100644
index 0000000..0e45a6d
--- /dev/null
+++ b/cogl-sharp/tests/TestMatrix.cs
@@ -0,0 +1,44 @@
+using Cogl;
+using NUnit.Framework;
+
+namespace Cogl.Test
+{
+    [TestFixture]
+    public class TestMatrix : AssertionHelper
+    {
+
+        [SetUp]
+        public void Init()
+        {
+            GlobalSettings.DefaultFloatingPointTolerance = 1e-6;
+        }
+
+        [Test]
+        public void InitIdentity()
+        {
+            Matrix i;
+
+            i.InitIdentity();
+
+            Expect(i.xx, EqualTo(1.0f));
+            Expect(i.yx, EqualTo(0.0f));
+            Expect(i.zx, EqualTo(0.0f));
+            Expect(i.wx, EqualTo(0.0f));
+
+            Expect(i.xy, EqualTo(0.0f));
+            Expect(i.yy, EqualTo(1.0f));
+            Expect(i.zy, EqualTo(0.0f));
+            Expect(i.wy, EqualTo(0.0f));
+
+            Expect(i.xz, EqualTo(0.0f));
+            Expect(i.yz, EqualTo(0.0f));
+            Expect(i.zz, EqualTo(1.0f));
+            Expect(i.wz, EqualTo(0.0f));
+
+            Expect(i.xw, EqualTo(0.0f));
+            Expect(i.yw, EqualTo(0.0f));
+            Expect(i.zw, EqualTo(0.0f));
+            Expect(i.ww, EqualTo(1.0f));
+        }
+    }
+}