Drawing

Primitives

Drawing primitives in Sharpex2D is pretty simple. Any object implementing or inheriting the IDrawable interface (Scenes for example) has a Draw method that gets a SpriteBatch passed in.

public override void Draw(Sharpex2D.Rendering.SpriteBatch spriteBatch, Sharpex2D.GameTime gameTime)
{
            
}

By overriding this method, we can unse the SpriteBatch to draw different primitive figures.

public override void Draw(Sharpex2D.Rendering.SpriteBatch spriteBatch, Sharpex2D.GameTime gameTime)
{
    spriteBatch.FillRectangle(Color.Red, new Rectangle(10, 10, 100, 50));
    spriteBatch.DrawRectangle(new Pen(Color.DarkGreen, 3f), new Rectangle(400, 180, 30, 30));

    spriteBatch.FillEllipse(Color.Blue, new Ellipse(50, 75, new Vector2(320, 240)));
    spriteBatch.DrawEllipse(new Pen(Color.Black, 2f), new Ellipse(60, 60, new Vector2(500, 400)));

    spriteBatch.DrawPolygon(new Pen(Color.Green, 7f), new Polygon(
            new Vector2(50,50),
            new Vector2(300, 50),
            new Vector2(200,140),
            new Vector2(300,240),
            new Vector2(140, 140)
        ));

    spriteBatch.FillPolygon(Color.Lime, new Polygon(
            new Vector2(400, 10),
            new Vector2(500, 30),
            new Vector2(600, 110),
            new Vector2(300, 160),
            new Vector2(300, 110)
        ));
}

Note: DrawArc is only supported by GDI at the moment

Images

Drawing images is nearly as simgle as drawing primitives. The only difference is that we need to load an image prior to drawing it.

To do so, navigate to a LoadContent method that enables you to load the graphic into a variable that you can use in your Draw method. This is usually the LoadContent method of the scene you want to draw the graphics in.

LoadContent gets a ContentManager passed in which has a Function Load. Have a look at its signature:

public T Load<T>(string asset) where T : IContent

So Load can load object types that implement IContent from a given file (string asset). asset is a path relative to Application Path/Content. Sharpex2D usually creates this directory with the first start of a program. Navigate to your project's output dir (for VS, this is usually Documents/Visual Studio Version/Projects/Solution Name/Project Name/bin/debug/). If there's no "Content" directory, create it. Get an image (I'll use this one by megupets) and copy it to your "Content" directory.

Back in VS, go back to your LoadContent method and load the image into a Texture2D variable. You can now use the DrawTexture method of spriteBatch to draw your Texture2D.

class IntroScene :Scene
{

    Texture2D bear;

    public override void Update(Sharpex2D.GameTime gameTime)
    {

    }

    public override void Draw(Sharpex2D.Rendering.SpriteBatch spriteBatch, Sharpex2D.GameTime gameTime)
    {
        spriteBatch.DrawTexture(bear, new Vector2(50, 50));
    }

    public override void Initialize()
    {

    }

    public override void LoadContent(Sharpex2D.Content.ContentManager content)
    {
        bear = content.Load<Texture2D>("bear.png");
    }
}

Text

Drawing text needs a Font defines font type, font size and font style (like bold or italic). Add a Font variable to your scene and instanciate it in LoadContent. You can then use SpriteBatch.DrawString to draw a string with that font.

class IntroScene :Scene
{
    Texture2D bear;
    Font font;

    public override void Update(Sharpex2D.GameTime gameTime)
    {

    }

    public override void Draw(Sharpex2D.Rendering.SpriteBatch spriteBatch, Sharpex2D.GameTime gameTime)
    {
        spriteBatch.DrawTexture(bear, new Vector2(50, 50));
        spriteBatch.DrawString("I'm a bear!", font, new Vector2(60, 150), Color.White);
    }

    public override void Initialize()
    {

    }

    public override void LoadContent(Sharpex2D.Content.ContentManager content)
    {
        bear = content.Load<Texture2D>("bear.png");
        font = new Font("Arial", 16f, TypefaceStyle.Regular);
    }
}