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UIElement Visual3DModel behaves differently than MeshGeometryVisual3D

Domvs Phi 4 years ago in Question • updated 4 years ago 1
Hello. I am testing HelixToolKit and I am trying to achieve a simple task:
Create a revolve object and display it on the 3D view port. Since I need the object to be clickable, I am adding it using the UIElement example (changed it to have the rotation instead of the sphere). This is partially achieved, this is, the object displays and I can click on it (and have a desired event), but the object does not render well as the MeshGeometryVisual3D.

See image. Blue glass was added with UIElement, while the red one with MeshGeometryVisual3D. The red one is ok - it is what I want to obtain, while the blue presents parts transparent. If I rotate the camera those parts turn solid, but others transparent. I do not believe that is a question of light as I tested several. The blue glass is half the size of the red one on propose.
In resume red glass is perfect, blue glass is defected.

Relevant WPF code:

 <h:HelixViewport3D x:Name="view1">
<h:GridLinesVisual3D Center="6 0 -0.5" Fill="Gray" Visible="True"/>
<h:MeshGeometryVisual3D Transform="{h:Translate -5,0,0}" MeshGeometry="{Binding GlassGeometry}" Fill="Red" Visible="True"/>

Demo2Element3D construction (Blue glass):

 public class Demo2Element3D : UIElement3D {
public Demo2Element3D()
var gm = new GeometryModel3D();
var mb = new MeshBuilder();

var profile = new[] { new Point(0, 0), new Point(0, 0.4), new Point(0.06, 0.36), new Point(0.1, 0.1), new Point(0.34, 0.1), new Point(0.4, 0.14), new Point(0.5, 0.5), new Point(0.7, 0.56), new Point(1, 0.46) };
mb.AddRevolvedGeometry(profile, null, new Point3D(0, 0, 0), new Vector3D(0, 0, 1), 200);
gm.Geometry = mb.ToMesh();
gm.Material = Materials.Blue;
Visual3DModel = gm;

Red glass:

 public MeshGeometry3D GlassGeometry {
var builder = new MeshBuilder(true, true);
var profile = new[] { new Point(0 * 2, 0.4 * 2), new Point(0.06 * 2, 0.36 * 2), new Point(0.1 * 2, 0.1 * 2), new Point(0.34 * 2, 0.1 * 2), new Point(0.4 * 2, 0.14 * 2), new Point(0.5 * 2, 0.5 * 2), new Point(0.7 * 2, 0.56 * 2), new Point(1 * 2, 0.46 * 2) };
builder.AddRevolvedGeometry(profile, null, new Point3D(0, 0, 0), new Vector3D(0, 0, 1), 100);
return builder.ToMesh(true);

Any information is helpful as I am very new to Helix and even to WPF.
Thank you

Cutting a mesh with a plane of limited size?

Mehran Maghoumi 4 years ago in Question 0
I know that MeshGeometryHelper has the Cut method that can cut a mesh against a plane.
Obviously, that function uses the traditional math definition of a plane (a plane which has an infinite size).
Is there an easy way to adapt that method to perform a cut using a plane of limited size? In other words, let's say we have the point and the normal of the plane as well as its width and height. How could we cut only a part of the mesh that intersects with this "limited" plane?
Is there a straightforward way of doing this?
Under review

How to render an arch

Michael Powell 4 years ago in Question • updated 4 years ago 2
How would I render an arch, or arc, or semi-circle? Is there a CircleVisual3D element? Possibly a SphereVisual3D with a rectangular cross section? Or a fancy grouping of PipeVisual3D calculated along the geometry of an arc. Of course if I could just render the arc, that would be that.

My math/geometry is a bit rusty, but I can puzzle it out.

Thank you...

Same 3D-Model act like different one?

Ardahan 3 years ago in Question • updated 3 years ago 1

I load STL files to helixviewport3d and store them in dictionary as key and file name as value.

But then I load same STL file and check if it is already in dictionary. But then It is not found and adding same model into viewport. where do i go wrong?

WPF Media3D

Camera view of rectangles

Nit29 4 years ago in Question 0

I am new to 3d manipulation esp with helix toolkit.
Am trying to have a camera fixed to a side of rectangle. When the rectangle is rotated or moved, the camera should relatively change it's view. Is there any property that ties the camera to an object or a specific vector of an object? Also, there will be 2 rectangles used as planes intersecting making an 'X' shape from the top view. So there has to be 2 views of one side of each plane and a top view.

I am looking forward to understand a way to make this work.Thanks!

Automatically move manipulator

Arjan 4 years ago in Question 0
I have created a small example with a "robot" containing rotating axes.
With the three manipulators I can move the axis of the robot.
But I'm looking for a way to move the manipulators when the robot moves.
So when axis 1 of the robot moves you see all the 'stacked' objects moving but not the manipulators.
How can I achieve this?

Here is my source code:
SphereVisual3D sphereAxis1 = new SphereVisual3D();
sphereAxis1.Fill = new SolidColorBrush(Colors.Blue);
sphereAxis1.Center = new System.Windows.Media.Media3D.Point3D(0, 0, 0);
sphereAxis1.Radius = 1.0;

RotateManipulator manipulatorAxis1 = new RotateManipulator();
manipulatorAxis1.Color = Colors.Blue;
manipulatorAxis1.Axis = new System.Windows.Media.Media3D.Vector3D(0, 0, 1);
manipulatorAxis1.Diameter = 3.5;
manipulatorAxis1.InnerDiameter = 2.5;

PipeVisual3D pipe1 = new PipeVisual3D();
pipe1.Fill = new SolidColorBrush(Colors.Orange);
pipe1.Diameter = 5.0;
pipe1.Point1 = new System.Windows.Media.Media3D.Point3D(0, 0, -1);
pipe1.Point2 = new System.Windows.Media.Media3D.Point3D(0, 0, 0);

PipeVisual3D pipe2 = new PipeVisual3D();
pipe2.Fill = new SolidColorBrush(Colors.Orange);
pipe2.Diameter = 2.0;
pipe2.Point1 = new System.Windows.Media.Media3D.Point3D(0, 0, 0);
pipe2.Point2 = new System.Windows.Media.Media3D.Point3D(0, 0, 2);

SphereVisual3D sphereAxis2 = new SphereVisual3D();
sphereAxis2.Fill = new SolidColorBrush(Colors.Blue);
sphereAxis2.Center = new System.Windows.Media.Media3D.Point3D(0, 0, 2);
sphereAxis2.Radius = 1.0;

RotateManipulator manipulatorAxis2 = new RotateManipulator();
manipulatorAxis2.Pivot = new System.Windows.Media.Media3D.Point3D(0, 0, 2);
manipulatorAxis2.Axis = new System.Windows.Media.Media3D.Vector3D(0, 1, 0);
manipulatorAxis2.Color = Colors.Green;
manipulatorAxis2.Position = new System.Windows.Media.Media3D.Point3D(0, 0, 2);
manipulatorAxis2.Diameter = 3.5;
manipulatorAxis2.InnerDiameter = 2.5;

PipeVisual3D pipe3 = new PipeVisual3D();
pipe3.Fill = new SolidColorBrush(Colors.Orange);
pipe3.Diameter = 2.0;
pipe3.Point1 = new System.Windows.Media.Media3D.Point3D(0, 0, 2);
pipe3.Point2 = new System.Windows.Media.Media3D.Point3D(0, 0, 7);

SphereVisual3D sphereAxis3 = new SphereVisual3D();
sphereAxis3.Fill = new SolidColorBrush(Colors.Blue);
sphereAxis3.Center = new System.Windows.Media.Media3D.Point3D(0, 0, 7);
sphereAxis3.Radius = 1.0;

RotateManipulator manipulatorAxis3 = new RotateManipulator();
manipulatorAxis3.Pivot = new System.Windows.Media.Media3D.Point3D(0, 0, 7);
manipulatorAxis3.Axis = new System.Windows.Media.Media3D.Vector3D(0, 1, 0);
manipulatorAxis3.Color = Colors.Green;
manipulatorAxis3.Position = new System.Windows.Media.Media3D.Point3D(0, 0, 7);
manipulatorAxis3.Diameter = 3.5;
manipulatorAxis3.InnerDiameter = 2.5;

PipeVisual3D pipe4 = new PipeVisual3D();
pipe4.Fill = new SolidColorBrush(Colors.Orange);
pipe4.Diameter = 2.0;
pipe4.Point1 = new System.Windows.Media.Media3D.Point3D(0, 0, 7);
pipe4.Point2 = new System.Windows.Media.Media3D.Point3D(7, 0, 7);

Kind regards,


DataTemplate3D for custom ModelVisual3D Xml/View

Michael Powell 4 years ago in Question • updated 4 years ago 4
I've got a custom ModelVisual3D, literally I extended into a Xml/View to build a model. I will likely have several of these animals, but each of them are a ModelVisual3D.

I am studying the WPF DataTemplate example, and it is interesting, data template acts as a kind of bridge into the 3D model?

I'm not sure what CreateItem is all about, except possibly a convention integrating with the sister ItemsVisual3D?

I wouldn't have such a thing in my model. In fact, I'm not sure I would potentially have one data template per model in the view, the content of which is the view instance?

It's making some sense grasping the connecting tissue.

Thank you...
WPF Media3D
Under review

How to render grass and chalk lines easily

Michael Powell 4 years ago in Question • updated 4 years ago 3

I am taking a look at some options how to render grass, for instance as a texture, overlaid on a model, like a RectangleVisual3D and/or polygonal-surface, for instance, then in such a way that I can also render chalk lines, identify some material, etc, that simulates chalk lines, in both lines (or small rectangles themselves), and for font-materials (if there were such a thing? haven't done the research there, yet...).

I've found some tutorials how to work through apps like Paint.NET, GIMP, etc, in order to crank out some grass textures. Basically what's I would consider low to low/medium end quality. Not really looking for medium/high to high end quality at this point for this purpose, nothing even remotely like a Cinema 4D, for instance.

I am also taking a look at Unity3D for potential options there, they can generate grass, but this looks more like a full-fledged game-style development environment. Which might be along the lines what I'd like to do, especially with simulation for sprites, physics, etc. I'm not positive, SharpDX an analog to Unity3D, but it came up looking for grass and related effects.

Anyhow, for now, looking for the configuration aspects and what I can accomplish with a simpler-generated model.

Thank you...

Best regards,

SharpDX WPF Media3D

how do i use doublekeydictionary in my unity project?

Thomas Clifton Olivent 4 years ago in Question 0
I've downloaded the master file, but aside from that, I have no idea where to place it or what to do with it.
Under review

How do I display pipe properties?

Mark4965 3 years ago in Question • updated by Brittany M. Lemay 2 weeks ago 23

Good Afternoon,

First off, I've really enjoyed using Helix and as a new user of WPF and graphical programming, I have found Helix very easy to use as well a aid during my learning process. The work put into this project is much appreciated!

I am currently working on a program where the user can create various elements (pipes, spheres, etc.) by inputting the appropriate inputs and graphically display them in the viewport.

Up to now everything has been pretty straight forward. Where I've been hung up the last several days is how to display the properties of the elements once selected with the mouse. For example, if user creates a pipe and then selects it a window would display the diameter, inner diameter, and Point1/2 coordinates. From what I can tell the BuildingDemo might provide a good example as to how this is accomplished however the PropertyGrid remains blank when I select something.

If anyone could provide some insight or some example code I would be extremely grateful. If you need more information please let me know.