Comments on: Discovering the 3D Mandelbulb

By: carga

carga — Thu, 17 Feb 2011 20:15:15 +0000

That's great!!! I feel that MandelBulb is a great example and very interesting starting point for OpenGL and OpenTK beginners like me.

Your app works very well in my Ubuntu Linux. It took just 3 seconds to download the binary and to run it with mono. So it's very cross-platform also. Great!

Maybe, it will be interesting for you to add 3 more features:
1. Stereo image (there are a lot of 3D-capable video devices already). The example of stereo rendering is included in OpenTK samples (at least it IS included in svn).
2. Render it as solid (colored) surface (maybe with some isolevels presented). I know it's hard to estimate normal for fractals, but MandelBulb is just a close approximation after all, so it IS a regular surface which has normal at every point.
3. Render it as colored volume -- present is as a set of colored transparent or partially-transparent voxels -- I think you may get some VERY sweet pictures this way. =)

Espesially I am appreciate you for this nice coloring palette which is best to be used without fog! It's very cool. =)

Best regards!

By: Better LUT results « Photometric Blog

Better LUT results « Photometric Blog — Fri, 26 Feb 2010 05:17:10 +0000

[...] discovered openTK while browsing a mandelbulb implementation. Its a nice little wrapper for the .net platform. I found a great terrain mesh example that [...]

By: Barney

Barney — Wed, 17 Feb 2010 21:46:26 +0000

Running under Windows 7, I just get the following stack trace.

************** Exception Text **************
System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
at OpenTK.Graphics.OpenGL.GL.Core.Clear(ClearBufferMask mask)
at OpenTK.Graphics.OpenGL.GL.Clear(ClearBufferMask mask)
at MiscTest.Form1.glControl1_Paint(Object sender, PaintEventArgs e)
at System.Windows.Forms.Control.OnPaint(PaintEventArgs e)
at OpenTK.GLControl.OnPaint(PaintEventArgs e)
at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
at System.Windows.Forms.Control.WmPaint(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at System.Windows.Forms.UserControl.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Loaded Assemblies **************
mscorlib
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll
----------------------------------------
MandelbulbExplorer
Assembly Version: 1.0.0.0
Win32 Version: 1.0.0.0
CodeBase: file:///C:/Users/Barney/Desktop/MandelbulbExplorer/MandelbulbExplorer.exe
----------------------------------------
System.Windows.Forms
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll
----------------------------------------
System
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll
----------------------------------------
System.Drawing
Assembly Version: 2.0.0.0
Win32 Version: 2.0.50727.4927 (NetFXspW7.050727-4900)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------

By: S J Courtney

S J Courtney — Mon, 25 Jan 2010 11:03:31 +0000

Have just downloaded your excellent program. Mine runs OK under XP, unlike Xezlec. It is on a laptop and is a but slow but that's OK

By: db

db — Fri, 15 Jan 2010 16:01:49 +0000

@Xezlec,
You need the .NET framework 2.0 installed.

By: Xezlec

Xezlec — Fri, 15 Jan 2010 06:12:19 +0000

Doesn't appear to run under XP?

By: 3D Fractals « Eikonal Blog

3D Fractals « Eikonal Blog — Fri, 08 Jan 2010 20:21:15 +0000

[...] Mandelbulb Explorer by Dmitry Brant. [...]

By: Alex Timiney

Alex Timiney — Sun, 13 Dec 2009 19:59:04 +0000

Hi,
Thankyou for writing this! - It'd take me months to get an environment up and running for rendering the set into. If you wouldn't mind, I'd suggest the following developments:
1) Equation editor. For editing the iterative formula and escape condition. As this set is considered to be incomplete still, being able to edit the formula gives great freedom in searching for the true 3D set. If I could just plug in my own CUDA library, that would be even neater.
2a) better particle representation. 3d spheres if possible, so they scale with camera perspective and provide a seamless surface at all camera positions. Some means of applying a pixel shader for lighting.
and/or 2b) particle data export, so I can load it into something like vvvv or realsoft3d.
3) particle parameter keying. The 2D set often uses the number of iterations taken to reach zero to represent colours or heights. Here we can use that data to set colour or transparency, or even particle size.
4) half decent camera controls(6 axis + zoom), so one can examine details without re-rendering. Motion relative to camera or world. Fog control.
Of course this is a wish list, not a contract, so do as you please =)

By: Nik Trevallyn-Jones

Nik Trevallyn-Jones — Thu, 03 Dec 2009 01:49:47 +0000

Hi,

Would you be prepared to release the OpenGL code either for others to use, or as Open Source?

I would love to incorporate the OpenGL component into an Open Source 3D modeller/renderer that I contribute to
(Art Of Illusion)

Cheers!
Nik

By: Robert

Robert — Mon, 30 Nov 2009 20:45:43 +0000

Hi, would it be possible to add an export option to export the point cloud data in some form, perhaps .txt files, in order to experiment with importing it into existing 3D packages?