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###EDIT: This will draw four lines as Drackir suggested.

EDIT:

This will draw four lines as Drackir suggested.

This method is both quick, and accurate. While not as pretty as what I'm sure you're imagining in your head, it gets the job done and is much less expensive than actually having to drawing many LineLists.

This method is both quick, and accurate. While not as pretty as what I'm sure you're imagining in your head, it gets the job done and could be much less expensive than actually having to drawing many LineLists.

###EDIT: This will draw four lines as Drackir suggested.

public void CollisionWireFrameToDraw(Gameobject G, int LineThickness, int RedValue, int GreenValue, int BlueValue) { Rectangle ObjectRect = new Rectangle((int)G.position.X - (int)G.center.X, (int)G.position.Y - (int)G.center.Y, G.sprite.Width, G.sprite.Height); game.SpriteBatch.Draw(Pixel, new Rectangle(ObjectRect.Left - LineThickness, ObjectRect.Y,LineThickness,ObjectRect.Height), new Color((byte)RedValue, (byte)GreenValue, (byte)BlueValue, (byte)255));//This is the line on the Left game.SpriteBatch.Draw(Pixel, new Rectangle(ObjectRect.Right, ObjectRect.Y, LineThickness, ObjectRect.Height), new Color((byte)RedValue, (byte)GreenValue, (byte)BlueValue, (byte)255)); //This is the line on the Right game.SpriteBatch.Draw(Pixel, new Rectangle(ObjectRect.X, ObjectRect.Top - LineThickness, ObjectRect.Width, LineThickness), new Color((byte)RedValue, (byte)GreenValue, (byte)BlueValue, (byte)255)); //This is the line on the Top game.SpriteBatch.Draw(Pixel, new Rectangle(ObjectRect.X, ObjectRect.Bottom, ObjectRect.Width, LineThickness), new Color((byte)RedValue, (byte)GreenValue, (byte)BlueValue, (byte)255)); //This is the line on the Bottom } 

This draws a line on each of the four sides (left, right, top, bottom). You can change the thickness of the line by passing in a larger (or smaller) LineThickness.

The important thing to note here is that on the Left and Top line, you have to subtract the LineThickness from it's position. (X for Left, Y for Top).

But why?

Because if you don't, the line will "creep" on top of your source sprite. By subtracting your LineThickness, you move the line back out (by offsetting it, so the width of the line doesn't widen onto the sprite.

One thing to note here is that you will have a gap in the four corners where the lines don't meet up. You simply have to choose two lines (Left and Right, or Top and Bottom) and add an offset to them to make it a complete Wire Frame. If you need help with that, I can update my code - but I thought it would be fun for you to solve.