Time for action – drawing the terrain

1. 1. In Solution Explorer, right-click on the Effects folder in the content project. Select Add | New Item....

2. 2. In the central pane of the Add New Item window, select Effect File.

3. 3. Name the file Terrain.fx and click Add.

4. 4. If you wish, browse through the template effect file that opens when it is added to the project, and then close the file.

5. 5. Add the Dra w region to the Terrain class:

   #region Draw
   public void Draw(
       ArcBallCamera camera,
       Effect effect)
   {
       effect.CurrentTechnique = effect.Techniques["Technique1"];
       effect.Parameters["World"].SetValue(Matrix.Identity);
       effect.Parameters["View"].SetValue(camera.View);
       effect.Parameters["Projection"].SetValue(camera.Projection);
   
       foreach (EffectPass pass in effect.CurrentTechnique.Passes)
       {
           pass.Apply();
           device.SetVertexBuffer(vertexBuffer);
           device.Indices = indexBuffer;
           device.DrawIndexedPrimitives(
               PrimitiveType.TriangleList,
     ...