duongthaiha wrote at 2013-05-01 12:42:

        Objects = new ObservableCollection<Visual3D>();
        Objects.Add(new GridLinesVisual3D());
        var color = Color.FromArgb(0x80, Colors.Red.R, Colors.Red.G, Colors.Red.B);

        var b = new BoxVisual3D()
            {
                Width = 10,
                Length = 10,
                Height = 10,

            };

        var brush = new SolidColorBrush();
        brush.Color = color;
        b.Fill = brush;
        Objects.Add(b);

objo wrote at 2013-05-08 15:37:

<ht:BoxVisual3D Width="10" Height="10" Length="10" Fill="#80FF0000"/>

eugenco wrote at 2012-06-10 16:00:

What is current position property and how to work with it.

chimou wrote at 2013-05-14 18:52:

            <ht:CubeVisual3D.Children>
                <ht:GridLinesVisual3D Width="140" Length="180" MinorDistance="5" Center="0 0 -11" Fill="SteelBlue"></ht:GridLinesVisual3D>
            </ht:CubeVisual3D.Children>
        </ht:CubeVisual3D>

        <ht:CubeVisual3D x:Name="Cover" Width="140" Length="180" Height="15" Center="0 0 10" TopFace="False" BottomFace="False" Fill="#4C58ABF0">                
            <ht:CubeVisual3D.Children>
                <ht:GridLinesVisual3D Width="140" Length="180" MinorDistance="5" Center="0 0 17" Fill="SteelBlue" Thickness="1"></ht:GridLinesVisual3D>
            </ht:CubeVisual3D.Children>

        </ht:CubeVisual3D>

                                      Value="{Binding CoverRotateValue}" 
                                      Axis="-1 0 0" AllowDrop="True" TargetTransform="{Binding ElementName=Cover, Path=Transform}">

objo wrote at 2013-06-07 11:54:

GhufranZahidi wrote at 2012-11-15 06:59:

Hi I am New to WPF 3D please tell me How to Build Helixtooll kit with our project

objo wrote at 2012-11-15 19:53:

I recommend using the Nuget package!

The main solution has been ugraded to VS2012 and .NET 4.5, but there is also a solution for VS2010 and .NET 4.0.

Moez_rebai wrote at 2014-07-16 14:28:

            MeshGeometry3D modeltodraw = new MeshGeometry3D();
            // fill modeltodraw 
            var originalMesh = new Mesh3D(modeltodraw.Positions, modeltodraw.TriangleIndices);
            var bounds = originalMesh.GetBounds();
            var l = Math.Max(bounds.Size.X, Math.Max(bounds.Size.Y, bounds.Size.Z));
            model1.Mesh = null;
            try
            {
                model1.Mesh = originalMesh;
            }
            catch (System.Exception ex)
            {
                System.Windows.Forms.MessageBox.Show( ex.Message);
            }

everytimer wrote at 2014-07-16 21:22:

Moez_rebai wrote at 2014-07-17 09:25:

BogusException wrote at 2014-07-18 00:08:

baucez wrote at 2012-04-30 16:38:

Which is the best way to draw a line (with highest performances)?

PipeVisual3D
LinesVisual3D
Something else.. 

objo wrote at 2012-04-30 17:26:

it depends on what you need:

LinesVisual3D is using two triangles per line segment. But it needs to update the vertices every time you change your camera. Remember this visual is working in 'screen space'.

PipeVisual3D is using more triangles per segment, but does not need to update the vertices (it is defined in 'model space').

The 'screen space' visuals can handle a few thousand points, but I think it gets too expensive with really high number of points. Then I think it is better to let the gpu handle more triangles in 'model space'. Does anyone know a better way to solve this? It's too bad WPF 3D does not support line primitives.

baucez wrote at 2012-04-30 17:50:

Thanks objo,

your reply remember me that I already read something about this topic on Petzold blog but I don't remember it very much.
Probably you already read it too, however if it can be useful here is the post.

VishwaPrasad wrote at 2014-07-23 14:17:

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.