murray_b wrote at 2012-01-30 05:07:

Hi 

I am trying to display a mesh created from a polygon.

But when I run the toMesh I am getting the message "Wrong number of normals" And I am not sure what that message is referring to.

List<Point3D> vrt = new List<Point3D>();
                // Create a list of Points
                for (int i = 0; i < set.Count(); i++)
                {
                    vrt.Add(
                     new Point3D
                    (
                        
                          (double)set[i].X,
                        (double)set[i].Y,
                        (double)set[i].Z
                    ));

                }

                var surface = new MeshBuilder();
                surface.AddPolygon(vrt);
                
                var mesh = surface.ToMesh();

Any help will be greatly appreciated. I am very new to WPF 3D and am finding the learning curve quite steep.

Thanks a lot

Murray

objo wrote at 2012-01-30 08:41:

hi Murray, 

I see this can be a bit confusing, it should be improved..

The parameterless MeshBuilder constructor will create a mesh with both normals and texture coordinates. The AddPolygon will currently only add vertices, not normals and texture coordinates.

I think changing the constructor to

new MeshBuilder(false,false)

should work.

I think there are two possible improvements here

a. Let AddPolygon calculate normals and texture coordinates if this is requested

b. Remove the parameterless constructor of MeshBuilder - so you _have to_ specify if normals/texture coordinates should be generated 

murray_b wrote at 2012-01-31 09:07:

Thanks for the quick reply Objo

That fixed the error I was getting.

Great work!

murray_b wrote at 2012-01-31 09:34:

Objo

When the meshbuilder now creates the mesh I can only see it from one side.

How do I get the meshbuilder to generate a mesh that I can rotate around and see from both sides?

Regards

Murray

objo wrote at 2012-01-31 10:01:

Remember to set the BackMaterial, it can be the same as the (front) Material.

eonxxx wrote at 2014-01-30 22:54:

objo wrote at 2014-02-02 12:06:

eonxxx wrote at 2014-02-02 21:38:

eonxxx wrote at 2014-02-28 22:52:

VishwaPrasad wrote at 2014-07-25 13:37:

saphua wrote at 2011-02-24 09:14:

I can't find any downloads for the samples?

Edit: Never mind, found them in the source code. Personally, i think that's a little confusing. But then again I can understand making sepperate downloads of each sample is a lot of work.

objo wrote at 2011-02-24 13:57:

you are right, the examples are changed/added frequently - so I haven't made any downloads yet. I'll make a download for the examples at release 1.0!

behnam263 wrote at 2014-04-21 12:02:

objo wrote at 2014-04-29 10:12:

Overlord123 wrote at 2012-01-03 19:21:

Is it possible to create a RTS camera, like in Starcraft II etc?

objo wrote at 2012-01-03 19:55:

sorry, I have no experience with Starcraft or any other real time strategy games, so I don't know what is needed. Do you need camera translation by WASD keys?

can this link help (from irrlicht 3d)? http://www.irrlicht3d.org/wiki/index.php?n=Main.RTSCameraByCmdKewin

Overlord123 wrote at 2012-01-03 20:27:

Yeah, basically the feature set of the linked camera is what I need.

• No vertical translation 
• Translates with WASD keys, (right mouse button and arrow keys) 
• Translates with mouse movement on border screen. Left, Right, Up and Down 
• Zooms with wheel (and right-left mouse buttons) 
• Ability to recenter itself around a node
• define min and max zoom levels
• define boundaries for translation so it does not translate outside the map.

I put not so important stuff in brackets. Is this possible to realize with the Helix 3D Toolkit?

Thanks.

objo wrote at 2012-01-03 21:09:

This should be included in the 'walkaround' camera mode - I have not tested it after latest camera control refactorings, might need some updates...

http://helixtoolkit.codeplex.com/wikipage?title=Input%20gestures&referringTitle=Documentation

badgerbadger wrote at 2011-12-14 16:41:

I am attempting to code a RotateManipulator in C# codebehind (not xaml) to add rotateable and translateable planes on a double click event.

How would this line from ManipulatorDemo / MainWindow.xaml line 185 be coded in c#?

<ht:RotateManipulator Color="Blue" Axis="0,0,1" Transform="{Binding Transform, ElementName=plane2}" TargetTransform="{Binding Transform, ElementName=plane2}" Diameter="1"/>

It is the syntax of the binding transforms that I am struggling with (I am new to wpf if you haven't guessed)

Thanks! badgerbadger.

objo wrote at 2011-12-14 19:26:

use the SetBinding method

http://msdn.microsoft.com/en-us/library/system.windows.frameworkelement.setbinding.aspx

badgerbadger wrote at 2011-12-15 10:11:

Thanks, I had been using that but not getting it to work. Attempted to code ManipulatorDemo / MainWindow.xaml line 185 as

var plane = new RectangleVisual3D();

plane. etc

var manip = new RotateManipulator();

...

BindingOperations.SetBinding(manip, RotateManipulator.TransformProperty, new Binding("Transform") { ElementName = "plane" });
BindingOperations.SetBinding(manip, RotateManipulator.TargetTransformProperty, new Binding("Transform") { ElementName = "plane" });

and other combinations of setBinding but get "System.Windows.Data Error: 4 : Cannot find source for binding with reference 'ElementName=plane'"...

Apologies if this is a newbie wpf error but not finding much relevant on the web

BogusException wrote at 2014-07-29 21:13:

everytimer wrote at 2014-07-30 19:35:

BogusException wrote at 2014-07-30 21:17:

finder_sl wrote at 2012-06-11 12:38:

Hello.

I need to add labels to objects, for example, to sign the top of the cube.

Like this: https://dl.dropbox.com/u/22892769/screen.PNG

How can I do that? Thanks.