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Added documentation.

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This commit is contained in:
the_fiddler 2007-11-08 16:42:30 +00:00
parent f52e61b1a8
commit bfcfe107b2
1 changed files with 21 additions and 5 deletions
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26
Source/Examples/Tutorial/Text.cs
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@ -15,9 +15,13 @@ using OpenTK.Fonts;
using OpenTK.OpenGL;
using OpenTK.Input;
using OpenTK.OpenGL.Enums;
using System.Diagnostics;
namespace Examples.Tutorial
{
/// <summary>
/// Shows how to render and scroll large amounts of text.
/// </summary>
public class Text : GameWindow, IExample
{
TextureFont serif = new TextureFont(new Font(FontFamily.GenericSerif, 24.0f));
@ -25,11 +29,9 @@ namespace Examples.Tutorial
ITextPrinter text = new TextPrinter();
public Text() : base(new DisplayMode(800, 600), String.Format("OpenTK | Tutorial {0}: Text", order))
{ VSync = VSyncMode.Off; }
{ }
// Read some text to print. It's a good idea to ensure line-endings are all in the \n
// form and not \r\n or \n\r.
string poem = new StreamReader("Data/Poem.txt").ReadToEnd().Replace('\r', ' ');
string poem = new StreamReader("Data/Poem.txt").ReadToEnd();
int lines; // How many lines the poem contains.
float scroll_speed;
@ -42,12 +44,16 @@ namespace Examples.Tutorial
public override void OnLoad(EventArgs e)
{
GL.ClearColor(Color.SteelBlue);
current_position = initial_position;
scroll_speed = -1.0f;
text.Prepare(poem, serif, out poem_handle);
// Count the amount of lines in the text, to find out the correct
// warparound position. We want the text to scroll until the last
// line moves outside the screen, then warp it around from the
// other side of the screen.
foreach (char c in poem)
if (c == '\n')
lines++;
@ -58,6 +64,16 @@ namespace Examples.Tutorial
#endregion
#region OnUnload
public override void OnUnload(EventArgs e)
{
poem_handle.Dispose();
serif.Dispose();
}
#endregion
#region OnResize
protected override void OnResize(OpenTK.Platform.ResizeEventArgs e)