Messages

1

DotNet / Re: SFML on PictureBox with no render loop and GDI+

« on: November 16, 2013, 09:24:12 am »

Do you just want to draw inside a Form? Then try the following code.
After copying my code you just need to add a timer, set it's interval to 5ms and enable it.

   public partial class Form1 : Form
   {
      RenderWindow renderWnd;
      public Form1()
      {
         InitializeComponent();
         SetDoubleBuffered(panel1);
      }

      protected override void OnShown(EventArgs e)
      {
         base.OnShown(e);
         renderWnd = new RenderWindow(panel1.Handle, new ContextSettings(32, 0, );
      }

      public static void SetDoubleBuffered(Control c)
      {
         System.Reflection.PropertyInfo aProp =
              typeof(Control).GetProperty(
                  "DoubleBuffered",
                  System.Reflection.BindingFlags.NonPublic |
                  System.Reflection.BindingFlags.Instance);

         aProp.SetValue(c, true, null);
      }

      private void timer1_Tick(object sender, EventArgs e)
      {
         renderWnd.Clear(new SFML.Graphics.Color(0,0,0));

         var circle = new CircleShape(5);
         circle.FillColor = SFML.Graphics.Color.Red;
         var cursor = panel1.PointToClient(MousePosition);
         circle.Position = new Vector2f(cursor.X, cursor.Y);

         renderWnd.Draw(circle);

         renderWnd.Display();
      }
   }

2

Feature requests / Re: Textured text?

« on: December 19, 2012, 11:14:53 am »

Use a shader to directly merge the two textures (the glyphs and your custom texture) in a single drawcall.
or if that doesnt work draw the text with white color, then in a second pass, apply your texture on all white pixels.

3

Window / Re: Repeating keys when held down

« on: December 19, 2012, 11:10:32 am »

Oh, I'm sorry! I only used TextEntered and Keyboard.GetState() to get the keys.
KeyPressed does what I want! Feel free to delete the thread.

4

Window / Repeating keys when held down

« on: December 19, 2012, 11:00:45 am »

Hi,
I'm coding a textbox control with sfml.
When I hold down a letter button it begins to repeat it after a second like it should be.

My problem is that this only happens in the "TextEntered" event.
But I also need the arrow-keys to have the same functionality.

I know the arrow keys are not text, but there has to be a way to also get those keys to repeat.
After all, every text input control will move the cursor/caret when an arrow key is being held down.

5

DotNet / OpenTK and SFML

« on: November 11, 2012, 11:50:42 pm »

Hi there. Got SFML working with OpenTK.
I understand that me messing with the openGL context will disturb SFML in its functionality.
Thats why one should use PushGLStates / PopGLStates.
I read the tutorial and the documentation, but somehow it's still not 100% clear to me.

I have a few questions.

1.) Should I enclose my code with Push/PopGlStates, or should I enclode the SFML drawing code with it?
Is there even a difference?

2.) When should ResetGlStates be used? Can it replace the above functions?

3.) Is this the correct way to make openTK aware of SFML: ?

static void Main(string[] args)
                {
                        RenderWindow = new RenderWindow(new SFML.Window.VideoMode(800, 450), "Title", SFML.Window.Styles.Close);

                        var wi = OpenTK.Platform.Utilities.CreateWindowsWindowInfo(RenderWindow.SystemHandle);
                        var ctx = new OpenTK.Graphics.GraphicsContext(OpenTK.Graphics.GraphicsMode.Default, wi);
                        ctx.MakeCurrent(wi);
                        ctx.LoadAll();

                        ...
                }
 

Isn't there a way to get the GlContext from the "RenderWindow" class directly??

6

General / Networking (tutorial) using SFML and NodeJS

« on: March 15, 2012, 04:00:19 pm »

huh, wow this is really cool!

I'll read it in the next days and provide feedback.
Thanks!!

7

DotNet / Limit the amount of vertices drawn

« on: March 08, 2012, 11:29:28 am »

Yeah, now it works, thank you.

8

DotNet / Limit the amount of vertices drawn

« on: March 07, 2012, 11:41:45 pm »

By the way: RenderStates is somehow buggy.

When I use the following renderstates, the program crashes:

Code: [Select]


renderStates = new RenderStates(Texture);
renderStates.BlendMode = BlendMode.Add;

target.Draw(vertices, PrimitiveType.Quads, renderStates);


"Access Violation" inside this:
           
                     

Code: [Select]

  sfRenderWindow_DrawPrimitives(CPointer, vertexPtr, (uint)vertices.Length, type, states.Marshal());


EDITED:
But when I try it that way, it works without problems:

Code: [Select]


var va = new VertexArray(PrimitiveType.Quads);
for (int i = 0; i < particles.Count; i++)
{
va.Append(vertices[i * 4 + 0]);
va.Append(vertices[i * 4 + 1]);
va.Append(vertices[i * 4 + 2]);
va.Append(vertices[i * 4 + 3]);
}

va.Draw(target, renderState);

That would be very inefficient. But strangely it works.
Maybe only the vertexarray should draw vertices ? But why does RenderTarget.Draw() have an overload that allows drawing Vertex[] types directly ?

I'm using that method for now :/
I hope its only a small bug.

9

DotNet / Limit the amount of vertices drawn

« on: March 07, 2012, 11:07:30 pm »

The only possible way would be copying out the part of the array I want to render.
But since there is a (hidden) maximum variable, i'd rather use use that.

10

DotNet / Limit the amount of vertices drawn

« on: March 07, 2012, 09:49:58 pm »

Hi there,
I have a custom vertex array (not the VertexArray class).
And when drawing I sometimes only want to draw the first N quads, not all.

This is for a particle effect, if there are only 20 out of 2000 particles "alive", I don't want to draw all 2000.

Draw(vertices, PrimitiveType, renderStates) is missing something like a "count" parameter to specify this ?
Or how do I do this?

11

DotNet / How to enable antialiasing for rendertexture?

« on: March 07, 2012, 11:52:29 am »

Oh sorry, I'll search next time.
Thanks

12

DotNet / How to enable antialiasing for rendertexture?

« on: March 07, 2012, 11:41:20 am »

Code: [Select]

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using SFML.Window;
using SFML.Graphics;

namespace SFML_MatrixTest2
{
class Program
{
public static void Main(string[] args)
{
RenderWindow renderWindow = new RenderWindow(new VideoMode(800, 500), "SFML!", Styles.Default, new ContextSettings(0, 0, 8));
renderWindow.Closed += (s, e) => Environment.Exit(0);
renderWindow.SetFramerateLimit(60);

RectangleShape rect = new RectangleShape(new Vector2f(100, 70));
rect.FillColor = Color.Red;
rect.OutlineThickness = 2f;
rect.OutlineColor = Color.Green;

RenderTexture renderTexture = new RenderTexture(100, 100);
Sprite renderSprite = new Sprite(renderTexture.Texture);

while (true)
{
renderWindow.DispatchEvents();
renderWindow.Clear();


renderTexture.Clear(Color.Blue);

rect.Position = new Vector2f(50, 50);
rect.CenterOrigin();
rect.Rotation += 0.2f;

renderTexture.Draw(rect);

renderTexture.Smooth = true;
renderSprite.CenterOrigin();
renderSprite.Rotation = rect.Rotation;
renderSprite.Position = new Vector2f(200, 200);
renderSprite.Scale = new Vector2f(3, 3);
renderWindow.Draw(renderSprite);
renderWindow.Display();
}
}
}
}


Center origin might be missing, its just:

Code: [Select]

internal static void CenterOrigin(this Sprite sprite)
{
sprite.Origin = new SFML.Window.Vector2f(sprite.TextureRect.Width * 0.5f, sprite.TextureRect.Height * 0.5f);
}

internal static void CenterOrigin(this RectangleShape rect)
{
var bounds = rect.GetLocalBounds();
rect.Origin = new Vector2f(bounds.Width * 0.5f, bounds.Height * 0.5f);
}


Anyway, the draw to the render texture doesnt seem to be anti aliased
How do I enable it when drawing to render textures?

13

Graphics / Tilemap: vertex array or prerendered texture?

« on: March 03, 2012, 05:43:55 pm »

Yes it would be faster. But you will still have to split the complete, huge, prerendered texture, into smaller textures.
Since the maximum "renderTexture" is dependant on your GPU,
i think 1024 would be ok for most gpus, but you will have to check it yourself.


Whatever, as I said you will still have to split it.
I will implement some kind of grouping into my tilemap so a 20x20 part of my levels tilemap will be rendered into one rendertexture.

14

DotNet / get window position?

« on: March 02, 2012, 09:52:57 pm »

Mouse.GetPosition(renderWindow);

Will retrieve the position relative to the renderwindow, you don't need its position.

15

DotNet / A few design questions

« on: March 02, 2012, 09:51:57 pm »

Ah ok, you are right,
I just  thought this one is the correct link
http://msdn.microsoft.com/en-us/library/ms229042.aspx
because it said:
"Design Guidelines for Developing Class Libraries"

It's not really a problem anyway