Snowball and GitHub

April 12, 2011 .net github snowball

I started writing a 2D Game Engine on GitHub. I call it Snowball because I'm original like that.

Getting started with SlimDX

March 31, 2011 .net directx

*Update 2013-09-29: At this point SlimDX is quite out of date and I would recommend starting with SharpDX.

Since I tried OpenTK, I decided to give SlimDX a try as well. So, here's a simple getting started app:

using System;
using System.Drawing;
using System.Windows.Forms;
using SlimDX;
using SlimDX.Direct3D9;
using SlimDX.Windows;

namespace SlimDXApp1
{
	public partial class SlimDXApp1Form : RenderForm
	{
		struct Vertex
		{
			public Vector4 Position;
			public int Color;
		}

		Device device;
		VertexDeclaration vertexDeclaration;
		
		public SlimDXApp1Form()
			: base("SlimDXApp1")
		{
			this.ClientSize = new Size(800, 600);

			this.device = new Device(new Direct3D(), 0, DeviceType.Hardware, this.Handle, CreateFlags.HardwareVertexProcessing, new PresentParameters()
            {
                BackBufferWidth = this.ClientSize.Width,
                BackBufferHeight = this.ClientSize.Height
            });

			this.vertexDeclaration = new VertexDeclaration(this.device, new[] {
        		new VertexElement(0, 0, DeclarationType.Float4, DeclarationMethod.Default, DeclarationUsage.PositionTransformed, 0),
        		new VertexElement(0, 16, DeclarationType.Color, DeclarationMethod.Default, DeclarationUsage.Color, 0),
				VertexElement.VertexDeclarationEnd
        	});
		}

		public void Run()
		{
			MessagePump.Run(this, () =>
			{
				this.device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, Color.Black, 1.0f, 0);
				this.device.BeginScene();

				this.device.VertexDeclaration = this.vertexDeclaration;

				this.device.DrawUserPrimitives<Vertex>(PrimitiveType.TriangleList, 1, new[] {
					new Vertex() { Color = Color.Red.ToArgb(), Position = new Vector4(400.0f, 100.0f, 0.5f, 1.0f) },
					new Vertex() { Color = Color.Blue.ToArgb(), Position = new Vector4(650.0f, 500.0f, 0.5f, 1.0f) },
					new Vertex() { Color = Color.Green.ToArgb(), Position = new Vector4(150.0f, 500.0f, 0.5f, 1.0f) }
				});
				
				this.device.EndScene();
				this.device.Present();
			});
		}

		[STAThread]
		static void Main()
		{
			SlimDXApp1Form form = new SlimDXApp1Form();
			form.Run();

			// Cleans up COM handles
			foreach(var item in ObjectTable.Objects)
				item.Dispose();
		}
	}
}

Getting started with OpenTK

March 29, 2011 .net opengl

I started experimenting with OpenTK and I had to look in a few places to put this code together, so I'm posting it here for anyone who might be looking for an easy getting started lesson.

I've set up a window similar to what I've been used to in Xna (CornflowerBlue 4 life). I've also set up a 2D projection matrix and drawn a triangle in a 2D fashion. You'll need to add a reference to the OpenTK assembly for your project in Visual Studio.

using System;
using System.Drawing;
using OpenTK;
using OpenTK.Graphics;
using OpenTK.Graphics.OpenGL;

namespace OpenTKApp1
{
	public class AppWindow : GameWindow
	{
		public AppWindow()
		{
			this.Title = "OpenTK App 1";
			this.WindowBorder = WindowBorder.Fixed;
			this.ClientSize = new Size(800, 600);			
		}

		protected override void OnRenderFrame(FrameEventArgs e)
		{
			base.OnRenderFrame(e);

			GL.ClearColor(Color.CornflowerBlue);
			GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);

			GL.MatrixMode(MatrixMode.Projection);
			GL.LoadIdentity();
			GL.Ortho(0, 800, 600, 0, -1, 1);
			GL.Viewport(0, 0, 800, 600);
			
			GL.Begin(BeginMode.Triangles);
			GL.Color3(Color.Red);
			GL.Vertex3(400, 150, 0);
			GL.Color3(Color.Green);
			GL.Vertex3(600, 450, 0);
			GL.Color3(Color.Blue);
			GL.Vertex3(200, 450, 0);
			GL.End();

			GL.Flush();
			this.SwapBuffers();
		}

		[STAThread]
		public static void Main()
		{
			AppWindow window = new AppWindow();
			window.Run();
		}
	}
}

OpenTK - Simple Movable Sprite

March 29, 2011 .net opengl

I wrote my second OpenTK app. This time I'm drawing a sprite which you can move around the screen using the keyboard. I've included the source code after the jump or you can download it.

Read More

Keeping SplitContainer SplitterDistance consistent

February 09, 2011 .net winforms

If you're having trouble keeping the SplitterDistance property of a SplitContainer consistent across app sessions, you can set the FixedPanel property of the splitter to FixedPanel.Panel1.

splitter.FixedPanel = FixedPanel.Panel1;

I guess this could also work with FixedPanel.Panel2 as well but I haven't given it a try. Credit this stackoverflow post.