07 highlighting

Author: cdhanna

articles/tutorials/advanced/2d_shaders/07_sprite_vertex_effect/index.md

@@ -231,11 +231,11 @@ Create a new file in the _MonoGameLibrary_'s graphics folder called `SpriteCamer
 
 And now instead of creating an orthographic matrix in the `TitleScene`, we can use the new class:
 
-[!code-csharp[](./snippets/snippet-7-24.cs)]
+[!code-csharp[](./snippets/snippet-7-24.cs?highlight=9)]
 
 Moving the `z` value uniformly in the shader will not be visually stimulating. A more impressive demonstration of the _perspective_ projection would be to rotate the vertices around the center of the sprite:
 
-[!code-hlsl[](./snippets/snippet-7-25.hlsl)]
+[!code-hlsl[](./snippets/snippet-7-25.hlsl?highlight=7-22)]
 
 > [!note]
 > What does this do, `output.Position /= output.Position.w` ? 
@@ -254,7 +254,7 @@ And now when the debug parameter is adjusted, the text spins in a way that was n
 
 The text disappears for half of the rotation. That happens because as the vertices are rotated, the triangle itself started to point _away_ from the camera. By default, `SpriteBatch` will cull any faces that point away from the camera. Change the `rasterizerState` to `CullNone` when beginning the sprite batch:
 
-[!code-csharp[](./snippets/snippet-7-26.cs)]
+[!code-csharp[](./snippets/snippet-7-26.cs?highlight=4)]
 
 And voilà, the text no longer disappears on its flip side. 
 
@@ -278,7 +278,7 @@ Then, make sure to set the ScreenSize parameter correctly from C#:
 
 And instead of manually controlling the spin angle, we can make the title spin gentle following the mouse position. In the `Update()` function the `TitleScreen`, add the following snippet:
 
-[!code-csharp[](./snippets/snippet-7-29.cs)]
+[!code-csharp[](./snippets/snippet-7-29.cs?highlight=5-7)]
 
 | ![Figure 7-10: Spin controlled by the mouse](./gifs/spin-4.gif) |
 | :------------------------------------------------------------: |

articles/tutorials/advanced/2d_shaders/07_sprite_vertex_effect/snippets/snippet-7-24.cs

@@ -1,6 +1,11 @@
-// Load the 3d effect 
-_3dMaterial = Core.SharedContent.WatchMaterial("effects/3dEffect");
-_3dMaterial.IsDebugVisible = true;
+public override void LoadContent()
+{
+    // ...
 
-var camera = new SpriteCamera3d();
-_3dMaterial.SetParameter("MatrixTransform", camera.CalculateMatrixTransform());
+    // Load the 3d effect 
+    _3dMaterial = Core.SharedContent.WatchMaterial("effects/3dEffect");
+    _3dMaterial.IsDebugVisible = true;
+
+    var camera = new SpriteCamera3d();
+    _3dMaterial.SetParameter("MatrixTransform", camera.CalculateMatrixTransform());
+}

articles/tutorials/advanced/2d_shaders/07_sprite_vertex_effect/snippets/snippet-7-27.hlsl

@@ -1,2 +1,7 @@
+// ...
+
 float2 ScreenSize;
 float SpinAngle;
+
+// ...
+

articles/tutorials/advanced/2d_shaders/07_sprite_vertex_effect/snippets/snippet-7-29.cs

@@ -1,3 +1,10 @@
-var spinAmount = Core.Input.Mouse.X / (float)Core.GraphicsDevice.Viewport.Width;  
-spinAmount = MathHelper.SmoothStep(-.1f, .1f, spinAmount);  
-_3dMaterial.SetParameter("SpinAmount", spinAmount);
+public override void Update(GameTime gameTime)
+{
+    _3dMaterial.Update();
+
+    var spinAmount = Core.Input.Mouse.X / (float)Core.GraphicsDevice.Viewport.Width;
+    spinAmount = MathHelper.SmoothStep(-.1f, .1f, spinAmount);
+    _3dMaterial.SetParameter("SpinAmount", spinAmount);
+
+    // ...
+}

articles/tutorials/advanced/2d_shaders/07_sprite_vertex_effect/snippets/snippet-7-42.cs

@@ -1,7 +1,12 @@
-// Load the game material
-_gameMaterial = Content.WatchMaterial("effects/gameEffect");
-_gameMaterial.IsDebugVisible = true;
-_gameMaterial.SetParameter("ColorMap", _colorMap);
-var camera = new SpriteCamera3d();
-_gameMaterial.SetParameter("MatrixTransform", camera.CalculateMatrixTransform());
-_gameMaterial.SetParameter("ScreenSize", new Vector2(Core.GraphicsDevice.Viewport.Width, Core.GraphicsDevice.Viewport.Height));
+public override void LoadContent()
+{
+    // ...
+
+    // Load the game material
+    _gameMaterial = Content.WatchMaterial("effects/gameEffect");
+    _gameMaterial.IsDebugVisible = true;
+    _gameMaterial.SetParameter("ColorMap", _colorMap);
+    var camera = new SpriteCamera3d();
+    _gameMaterial.SetParameter("MatrixTransform", camera.CalculateMatrixTransform());
+    _gameMaterial.SetParameter("ScreenSize", new Vector2(Core.GraphicsDevice.Viewport.Width, Core.GraphicsDevice.Viewport.Height));
+}

articles/tutorials/advanced/2d_shaders/07_sprite_vertex_effect/snippets/snippet-7-43.cs

@@ -1,7 +1,14 @@
-// Set the camera view to look at the player slime
-var viewport = Core.GraphicsDevice.Viewport;
-var center = .5f * new Vector2(viewport.Width, viewport.Height);
-var slimePosition = new Vector2(_slime?.GetBounds().X ?? center.X, _slime?.GetBounds().Y ?? center.Y);
-var offset = .01f * (slimePosition - center);
-_camera.LookOffset = offset;
-_gameMaterial.SetParameter("MatrixTransform", _camera.CalculateMatrixTransform());
+public override void Update(GameTime gameTime)
+{
+    // ...
+
+    // Set the camera view to look at the player slime
+    var viewport = Core.GraphicsDevice.Viewport;
+    var center = .5f * new Vector2(viewport.Width, viewport.Height);
+    var slimePosition = new Vector2(_slime?.GetBounds().X ?? center.X, _slime?.GetBounds().Y ?? center.Y);
+    var offset = .01f * (slimePosition - center);
+    _camera.LookOffset = offset;
+    _gameMaterial.SetParameter("MatrixTransform", _camera.CalculateMatrixTransform());
+
+    // ...
+}

articles/tutorials/advanced/2d_shaders/07_sprite_vertex_effect/snippets/snippet-7-44.cs

@@ -1 +1,7 @@
-Core.GraphicsDevice.Clear(new Color(32, 16, 20));
+public override void Draw(GameTime gameTime)
+{
+    // Clear the back buffer.
+    Core.GraphicsDevice.Clear(new Color(32, 16, 20));
+
+    // ...
+}