source: 2014/30/MikkoI/WindowsGame1/WindowsGame1/WindowsGame1/Camera/Camera.cs @ 5558

using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.Graphics;

namespace WindowsGame1
{
    public class Camera
    {
        public Vector2 offset = Vector2.Zero;
        public float zoomFactor = 1;
        public float yaw = -45;
        public Camera() {
            
        }
        public Matrix getMatrix(Vector2 gridSize,Vector2 mapSize) {
            return Matrix.CreateTranslation(new Vector3(-(gridSize.X * mapSize.X / 2), -(gridSize.Y * mapSize.Y / 2), 0)) *
                Matrix.CreateRotationZ(MathHelper.ToRadians(45)) *
                Matrix.CreateRotationX(MathHelper.ToRadians(yaw)) *
                Matrix.CreateScale(zoomFactor, zoomFactor, 0) *
                Matrix.CreateTranslation(new Vector3(offset.X, offset.Y, 0));
        }
    }
}