Center(); function of 3D camera now also sets Z position to 0. Changed order of multiplication for matrices.

ConsoleApp1/ConsoleApp1.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>netcoreapp2.1</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\RecrownedAthenaeum\RecrownedAthenaeum.csproj" />
+  </ItemGroup>
+
+</Project>

ConsoleApp1/Program.cs

@@ -0,0 +1,13 @@
+using RecrownedAthenaeum.Camera;
+using System;
+
+namespace ConsoleApp1
+{
+    class Program
+    {
+        static void Main(string[] args)
+        {
+            Camera2D camera = new Camera2D();
+        }
+    }
+}

RecrownedAthenaeum/Camera/Camera3D.cs

@@ -61,7 +61,6 @@ namespace RecrownedAthenaeum.Camera
         {
             this.graphicsDevice = graphicsDevice ?? (Configuration.GraphicsDeviceManager.GraphicsDevice);
 
-            position.Z = 0;
             worldMatrix = Matrix.Identity;
             lookAt = Vector3.Forward;
             upDirection = Vector3.Up;
@@ -76,7 +75,7 @@ namespace RecrownedAthenaeum.Camera
         public virtual void Apply()
         {
             ViewMatrix = Matrix.CreateLookAt(position, lookAt, upDirection);
-            TransformationMatrix = worldMatrix * ViewMatrix * projectionMatrix;
+            TransformationMatrix = projectionMatrix * ViewMatrix * worldMatrix;
         }
 
         /// <summary>
@@ -84,6 +83,7 @@ namespace RecrownedAthenaeum.Camera
         /// </summary>
         public void Center()
         {
+            position.Z = 0;
             position.X = this.graphicsDevice.Viewport.Width * 0.5f;
             position.Y = this.graphicsDevice.Viewport.Height * 0.5f;
         }