Added createTranslation

TheRepo/TheLabs/MyMatrix.cs

@@ -5,6 +5,8 @@ using OpenTK.Mathematics;
 public class MyMatrix
 {
     
+    private float[,] elements = new float[4, 4];
+    
     public MyMatrix(float pRow0Column0,
         float pRow0Column1,
         float pRow0Column2,
@@ -22,28 +24,58 @@ public class MyMatrix
         float pRow3Column2,
         float pRow3Column3)
     {
+        // row 0
+        SetElement(0, 0, pRow0Column0);
+        SetElement(0, 1, pRow0Column1);
+        SetElement(0, 2, pRow0Column2);
+        SetElement(0, 3, pRow0Column3);
 
+        // row 1
+        SetElement(1, 0, pRow1Column0);
+        SetElement(1, 1, pRow1Column1);
+        SetElement(1, 2, pRow1Column2);
+        SetElement(1, 3, pRow1Column3);
+
+        // row 2
+        SetElement(2, 0, pRow2Column0);
+        SetElement(2, 1, pRow2Column1);
+        SetElement(2, 2, pRow2Column2);
+        SetElement(2, 3, pRow2Column3);
+
+        // row 3
+        SetElement(3, 0, pRow3Column0);
+        SetElement(3, 1, pRow3Column1);
+        SetElement(3, 2, pRow3Column2);
+        SetElement(3, 3, pRow3Column3);
     }
   
     public float GetElement(int pRow, int pColumn)
     {
-        return -1;
+        return elements[pRow, pColumn];
     }
     public void SetElement(int pRow, int pColumn, float pValue)
     {
-        
+        elements[pRow, pColumn] = pValue;
     }
     
    
 
     public static MyMatrix CreateIdentity()
     {
-        return null;
+        return new MyMatrix(
+            1, 0, 0, 0,
+            0, 1, 0, 0,
+            0, 0, 1, 0,
+            0, 0, 0, 1
+        );
     }
 
     public static MyMatrix CreateTranslation(MyVector pTranslation)
     {
-        return null;
+        return new MyMatrix(1f, 0f, 0f, 0f,
+            0f, 1f, 0f, 0f,
+            0f, 0f, 1f, 0f,
+            pTranslation.X, pTranslation.Y, pTranslation.Z, 1f);
     }
 
     public static MyMatrix CreateScale(MyVector pScale)
@@ -85,7 +117,12 @@ public class MyMatrix
     // this looks a little odd as the OpenTK Matrix4 constructor takes the elements in row major order
     public Matrix4 ToMatrix4()
     {
-        return Matrix4.Identity;
+        return new Matrix4(
+            GetElement(0,0), GetElement(0,1), GetElement(0,2), GetElement(0,3),
+            GetElement(1,0), GetElement(1,1), GetElement(1,2), GetElement(1,3),
+            GetElement(2,0), GetElement(2,1), GetElement(2,2), GetElement(2,3),
+            GetElement(3,0), GetElement(3,1), GetElement(3,2), GetElement(3,3)
+        );
     }