3DTools Forum Rss Feed

New Post: 3DTools install

aisha7 — Thu, 06 Jun 2013 13:35:18 GMT

Once installed,
add as a Reference to your project:
Ex:
In Visual Studio WPF,
in your project, right-click "Reference", "Browse", then browse to the location that you saved the extracted 3D Tools to.

New Post: How to create a circle with known center point and perpendicular to a line?

chinh_nguyen — Mon, 07 Jan 2013 11:34:41 GMT

Hi, sorry for asking such a beginner question, I am a beginner in WPF 3D programming. How to create a circle with known center point and perpendicular to a line? Thank in advance.

New Post: keyboard functionality

naryk — Mon, 30 Jul 2012 14:26:13 GMT

How can I setup trackball to perform rotation instead mousebutton's press?

I've tried creating a function similar to Track but something still not work correctly.

Thank to all

New Post: create pipes

naryk — Mon, 25 Jun 2012 14:49:39 GMT

Hello!
I've created a 3d line adding points to a ScreenSpaceLines3D object.
Is there a way to create a "pipeline" instead of a flat line???

Thanks,

Naryk

New Post: Helix Toolkit (active WPF 3D controls project)

govert — Wed, 30 May 2012 16:02:47 GMT

I'd just like to add a link to the excellent Helix 3D Toolkit , which is a collection of controls and helper classes for WPF 3D. It is an active project that includes improved versions of everything from 3D Tools and a lot more. It is published under the Ms-Pl license, which is a bit more liberal that the 3D Tools license.

I have been using the Helix 3D Viewport for nearly two years, and it works very well. This 3D Tools project was an interesting start, but has not been active for many years, and finding Helix toolkit made it easy to stick with WPF 3D.

So, definitely worth a look if you are interested in WPF 3D at all.

Ms-PL

New Post: WheelZoom

Johan20D — Fri, 11 May 2012 05:36:03 GMT

I rewrote the TrackBallDecorator to have Pan on left button, rotate on right and zoom on wheel.

The rotation is a bit strange but the rest works ok:

//---------------------------------------------------------------------------
//
// (c) Copyright Microsoft Corporation.
// This source is subject to the Microsoft Limited Permissive License.
// See http://www.microsoft.com/resources/sharedsource/licensingbasics/limitedpermissivelicense.mspx
// All other rights reserved.
//
// This file is part of the 3D Tools for Windows Presentation Foundation
// project.  For more information, see:
// 
// http://CodePlex.com/Wiki/View.aspx?ProjectName=3DTools
//
// The following article discusses the mechanics behind this
// trackball implementation: http://viewport3d.com/trackball.htm
//
// Reading the article is not required to use this sample code,
// but skimming it might be useful.
//
//---------------------------------------------------------------------------

using System;
using System.Collections;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Media.Media3D;
using System.Windows.Shapes;
using System.Windows.Input;
using System.Windows.Markup; // IAddChild, ContentPropertyAttribute

namespace _3DTools
{
    public class TrackballDecorator : Viewport3DDecorator
    {
        public TrackballDecorator()
        {
            // used so that we always get events while activity occurs within
            // the viewport3D
            _eventSource = new Border();
            _eventSource.Background = Brushes.Transparent;
            
            PreViewportChildren.Add(_eventSource);
        }

        /// <summary>
        ///     A transform to move the camera or scene to the trackball's
        ///     current orientation and scale.
        /// </summary>
        public Transform3D Transform
        {
            get
            {
                if (this.Viewport3D == null)
                    return Transform3D.Identity;
                return this.Viewport3D.Camera.Transform;
            }
        }

        #region Event Handling

        protected override void OnMouseDown(MouseButtonEventArgs e)
        {
            base.OnMouseDown(e);

            _previousPosition2D = e.GetPosition(this);
            _previousPosition3D = ProjectToTrackball(ActualWidth, ActualHeight, _previousPosition2D);
            if (Mouse.Captured == null)
            {
                Mouse.Capture(this, CaptureMode.Element);
            }
        }

        protected override void OnMouseUp(MouseButtonEventArgs e)
        {
            base.OnMouseUp(e);

            if (IsMouseCaptured)
            {
                Mouse.Capture(this, CaptureMode.None);
            }
        }

        protected override void OnMouseWheel(MouseWheelEventArgs e)
        {
            base.OnMouseWheel(e);
            double zoomValue;
            const double zoomFactor = 1.1;
            if (e.Delta < 0)
            {
                zoomValue = zoomFactor;
            }
            else
            {
                zoomValue = 1 / zoomFactor;
            }
           
            var scaleTransform3D = new ScaleTransform3D(new Vector3D(zoomValue, zoomValue, zoomValue), ScreenToWorld(e.GetPosition(this)));
            UpdateCameraTransform(scaleTransform3D);

        }

        protected override void OnMouseMove(MouseEventArgs e)
        {
            base.OnMouseMove(e);

            if (IsMouseCaptured)
            {
                Point currentPosition = e.GetPosition(this);

                // avoid any zero axis conditions
                if (currentPosition == _previousPosition2D) return;

                // Prefer tracking to zooming if both buttons are pressed.
                if (e.LeftButton == MouseButtonState.Pressed)
                {
                    TranslateTransform3D translateTransform3D = Pan(currentPosition);
                    UpdateCameraTransform(translateTransform3D);
                }
                else if (e.RightButton == MouseButtonState.Pressed)
                {
                    RotateTransform3D rotateTransform3D = Track(currentPosition);
                    UpdateCameraTransform(rotateTransform3D);
                }

                _previousPosition2D = currentPosition;
                _previousPosition3D = ProjectToTrackball(ActualWidth, ActualHeight, currentPosition);
            }
        }

        private void UpdateCameraTransform(Transform3D transform3D)
        {
            Viewport3D viewport3D = this.Viewport3D;
            if (viewport3D != null)
            {
                if (viewport3D.Camera != null)
                {
                    if (viewport3D.Camera.IsFrozen)
                    {
                        viewport3D.Camera = viewport3D.Camera.Clone();
                    }
                    var transform3DGroup = new Transform3DGroup();
                    transform3DGroup.Children.Add(viewport3D.Camera.Transform);
                    transform3DGroup.Children.Add(transform3D);
                    viewport3D.Camera.Transform = transform3DGroup;
                }
            }
        }

        #endregion Event Handling

        private TranslateTransform3D Pan(Point currentPosition)
        {
            //Vector3D currentPosition3D = ProjectToTrackball(ActualWidth, ActualHeight, currentPosition);
            Vector3D panVector3D = ScreenToWorld(_previousPosition2D) - ScreenToWorld(currentPosition);
            var translateTransform3D = new TranslateTransform3D(panVector3D);
            return translateTransform3D;
        }

        private RotateTransform3D Track(Point currentPosition)
        {
            Vector3D currentPosition3D = ProjectToTrackball(ActualWidth, ActualHeight, currentPosition);

            Vector3D axis = Vector3D.CrossProduct(_previousPosition3D, currentPosition3D);
            double angle = Vector3D.AngleBetween(_previousPosition3D, currentPosition3D);

            if (axis.Length == 0) 
                return new RotateTransform3D();
            Quaternion delta = new Quaternion(axis, -angle);
            return new RotateTransform3D(new QuaternionRotation3D(delta),ScreenToWorld(currentPosition));
        }

        private Camera Camera
        {
            get
            {
                if (this.Viewport3D == null)
                    return null;
                return this.Viewport3D.Camera;
            }
        }

        private Point3D ScreenToWorld(Point point)
        {
            bool success = false;
            Matrix3D worldToViewportTransform = MathUtils.TryWorldToViewportTransform((Viewport3DVisual) VisualTreeHelper.GetParent(this.Viewport3D.Children[0]), out success);
            if(success && worldToViewportTransform.HasInverse)
            {
                var point3D = new Point3D(point.X, point.Y, 0);
                worldToViewportTransform.Invert();
                Point3D transformed = worldToViewportTransform.Transform(point3D);
                return transformed;
            }
            else
            {
                return new Point3D(0,0,0);
            }
        }

        private Vector3D ProjectToTrackball(double width, double height, Point point)
        {
            if(this.Camera==null)
                return new Vector3D(0,0,0);
            double x = point.X / (width / 2);    // Scale so bounds map to [0,0] - [2,2]
            double y = point.Y / (height / 2);

            x = x - 1;                           // Translate 0,0 to the center
            y = 1 - y;                           // Flip so +Y is up instead of down

            double z2 = 1 - x * x - y * y;       // z^2 = 1 - x^2 - y^2
            double z = z2 > 0 ? Math.Sqrt(z2) : 0;

            return new Vector3D(x, y, z);
        }

        private Point _previousPosition2D;
        private Vector3D _previousPosition3D = new Vector3D(0, 0, 1);

        private Border _eventSource;        
    }
}

New Post: WheelZoom

Johan20D — Thu, 10 May 2012 04:33:41 GMT

In the TrackBallDecorator class

        protected override void OnMouseWheel(MouseWheelEventArgs e)
        {
            double zoomValue;
            double zoomFactor = 1.1;
            if(e.Delta<0)
            {
                zoomValue = zoomFactor;
            }
            else
            {
                zoomValue = 1/zoomFactor;
            }
            Viewport3D viewport3D = this.Viewport3D;
            if (viewport3D != null)
            {
                if (viewport3D.Camera != null)
                {
                    if (viewport3D.Camera.IsFrozen)
                    {
                        viewport3D.Camera = viewport3D.Camera.Clone();
                    }
                    var transform3DGroup = new Transform3DGroup();
                    transform3DGroup.Children.Add(viewport3D.Camera.Transform);
                    Vector3D projectToTrackball = ProjectToTrackball(ActualWidth, ActualHeight, e.GetPosition(this));
                    transform3DGroup.Children.Add(new ScaleTransform3D(new Vector3D(zoomValue, zoomValue, zoomValue), new Point3D(projectToTrackball.X,projectToTrackball.Y,projectToTrackball.Z)));
                    viewport3D.Camera.Transform = transform3DGroup;
                }
            }

        }

I dont know if this is a ggod way

New Post: Connot add ScreenSpaceLines3D to Model3DGroup

kzoko — Wed, 29 Feb 2012 16:10:59 GMT

Hi,

ScreenSpaceLines3D is Visual3D-->couldn't be added into Model3D like Model3DGroup or GeometryModel3D. However you can add it directly into Viewport3D.

New Post: Installation

kzoko — Wed, 29 Feb 2012 16:08:22 GMT

you don't need to install it. Just make a reference to 3DTools.dll in your Project

New Post: Can ScreenSpaceLines3D work with OrthographicCamera?

kzoko — Wed, 29 Feb 2012 16:07:05 GMT

Thanks alot, Joozt

New Post: Installation

nczimm — Wed, 15 Feb 2012 03:38:42 GMT

I have downloaded 3DTools and extracted the files. How do In install them?

New Post: 3DTools install

nczimm — Sun, 12 Feb 2012 06:34:04 GMT

I have downloaded 3DTools and extracted the files. I don't see an install and 3DTools in not available in VS for referencing. What do I need to do?

New Post: Cannot find the scripts folder in Blender 2.60

nehaagar1986 — Mon, 26 Dec 2011 12:55:57 GMT

Hi,

I am struggling to find the scripts folder for Blender 2.60. I have Windows 7 installed in my pc. I have to add xaml_export.py in that folder so that I can export the images in xaml format.

Any suggestions would be appreciated.

Neha

New Post: Plane to move object and keep tracking objects position

pmdusso — Wed, 30 Nov 2011 08:58:59 GMT

My tetrahedron, centered in the (0,0,0) rotates using a Trackball (programmatically, I have a transparent border over my viewport to capture the events).

The users for the application think the more naturally way to move the cube inside it is to move it always in a 2D plane (parallel to the screen). So, if I want to move it deeper in the screen, I just rotate the tetrahedron and move it in Y axis, for example. I think this can be a good solution.

I have to problems, and I would like help to solve then: first, when I move my tetrahedron (inside the Trackball) the Trackball looks like moving all the system coordinates. I say this because I draw axis for debug purpose, and those axis are being rotate also. But this is not true - they are moving just because are objects inside the trackball (right?). So my questions is how to define a plane which will not be rotate by trackball? For me the answer looks something like "ok, just define it outside the track ball" but, as I said (and 3DTools documentation say) I have a border over my viewport... So I do not know how to handle this.

My tetraedron in a set of ScreenSpaceLines3D. I will have to keep the cube inside it. My second question ishow to I trace the positions of the vertex of the tetrahedron of it being rotated? I got really disappointed when the Position property gave me the original positions and nothing else. Should I keep the matrix transformations and apply then to my points when I need then?

Sorry for long text, but I really stuck in this not so much programming questions. I am knew in WPF, I still have some lacks of concepts.

Thanks in advance,

Pedro

New Post: ScreenSpaceLines3D should implement IDispose so the objects can be deleted properly

shupacanucks — Wed, 12 Oct 2011 12:50:05 GMT

http://www.codeplex.com/Download?ProjectName=3dtools&DownloadId=17968

New Post: ScreenSpaceLines3D.OnRender bug?

pmdusso — Wed, 05 Oct 2011 13:40:17 GMT

kbeal2k wrote:

Thanks for the info. I have tried both patches and still get a memory leak when using ScreenSpaceLines3D.

Me too. Reading this post looks like we have to explicit call the Dispose - I just still do not know where we should call this Dispose.

New Post: Connot add ScreenSpaceLines3D to Model3DGroup

pmdusso — Wed, 28 Sep 2011 12:32:55 GMT

Hello,

I would like to know if it is possible to add my ScreenSpaceLines3D objects to my Model3DGroup, like the GeometryModel3D objects. Apparently, it is not possible to cast ScreenSpaceLines3D.

New Post: ScreenSpaceLines3D should implement IDispose so the objects can be deleted properly

darrellp — Sun, 25 Sep 2011 15:49:00 GMT

The sources are out there. I forget where - I assume wherever you downloaded the dll - codeplex? - and like I said, I even forget the project I was working on when I posted this so I can't go back and find the dll (plus, I don't think I made it into a separate dll - just threw the sources in my project). Find the sources, alter them and you're good to go.

New Post: ScreenSpaceLines3D should implement IDispose so the objects can be deleted properly

Guille29 — Sun, 25 Sep 2011 08:41:17 GMT

Hi again and thank you very much for the quick answer! The problem is that I can't open the project 3DTools to modify it. I am working with VB .NET express edition and I am just adding reference to 3DTools.dll. Do you know which platform I should use to modify the code and recompile it? It would be actually easier for everyone if someone would post a recompiled version of the dll with this problem fixed. If you do that many people would be very happy...
Meanwhile I have found a very ugly solution that at leat works. I'm just adding a set of ScreenSpaceLines3D to my viewport with a number of objects that remains invariable (so that i dont have to delete any of them). If I don't one to display one of them I clear the list of points.

New Post: ScreenSpaceLines3D should implement IDispose so the objects can be deleted properly

darrellp — Sat, 24 Sep 2011 05:45:25 GMT

It's been too long - don't even remember what code I was working on at the time. I do remember that it was pretty easy and I described it pretty well in the above article. Just look for a hook to CompositionTarget.Rendering in the code. Take the ScreenSpaceLines3D class, subclass it from IDisposable, and in the Dispose routine unhook from CompositionTarget.Rendering. Five minute fix. Looks like the developers have abandoned this code or surely they would have taken the five minutes to fix something so many people have complained about.