Reorganized file structure.

RecrownedAthenaeum/Graphics/Render/Camera.cs

@@ -0,0 +1,90 @@
+using OpenTK;
+namespace RecrownedAthenaeum.Graphics.Render
+{
+    /// <summary>
+    /// A generic camera. Functions in 3D.
+    /// </summary>
+    public class BasicCamera
+    {
+        /// <summary>
+        /// The scale for the world.
+        /// </summary>
+        public float worldScale = 1f;
+
+        /// <summary>
+        /// Current position in the world.
+        /// </summary>
+        public Vector3 position;
+
+        /// <summary>
+        /// The place the 3D camera is looking at.
+        /// </summary>
+        public Vector3 lookAt;
+
+        /// <summary>
+        /// The direction up is for the camera.
+        /// </summary>
+        public Vector3 upDirection;
+
+        /// <summary>
+        /// The transform matrix representing the world (rotation and translations of the original world).
+        /// </summary>
+        public Matrix3 worldMatrix;
+
+        /// <summary>
+        /// The view matrix that describes where the camera looks.
+        /// </summary>
+        public Matrix3 ViewMatrix { get; protected set; }
+
+        /// <summary>
+        /// The projection matrix.
+        /// </summary>
+        public Matrix3 projectionMatrix;
+
+        /// <summary>
+        /// A basic effect that will be updated with the correct matrice information everytime <see cref="Apply"/> is called. Can be null and thus will not be used.
+        /// </summary>
+        public BasicEffect basicEffect;
+
+        /// <summary>
+        /// Constructs 3D camera with an orthographic projection matrix with dimensions of graphics devices viewport. All changes to matrices should have apply called after changes.
+        /// </summary>
+        /// <param name="basicEffect">A basic effect that will be updated with the correct matrice information everytime <see cref="Apply"/> is called. Can be null and thus will not be used.</param>
+        public BasicCamera(BasicEffect basicEffect = null)
+        {
+            worldMatrix = Matrix.Identity;
+            lookAt = Vector3.Forward;
+            upDirection = Vector3.Up;
+
+            projectionMatrix = Matrix.Identity;
+            this.basicEffect = basicEffect;
+            Apply();
+        }
+
+        /// <summary>
+        /// Applies the changes to the fields and properties of the camera.
+        /// </summary>
+        public virtual void Apply()
+        {
+            ViewMatrix = Matrix.CreateLookAt(position, lookAt, upDirection);
+            worldMatrix *= Matrix.CreateScale(worldScale);
+
+            if (basicEffect != null)
+            {
+                basicEffect.World = worldMatrix;
+                basicEffect.Projection = projectionMatrix;
+                basicEffect.View = ViewMatrix;
+            }
+        }
+
+        /// <summary>
+        /// Moves camera by the given amount.
+        /// </summary>
+        /// <param name="move">A <see cref="Vector3"/> that contains how much in each direction to move.</param>
+        public void MoveCamera(Vector3 move)
+        {
+            position += move;
+            Apply();
+        }
+    }
+}