3D Tools for the Windows Presentation Foundation

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: 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.

Source code checked in, #99885

Project Collection Service Accounts — Mon, 01 Oct 2012 21:24:31 GMT

Upgrade: New Version of LabDefaultTemplate.xaml. To upgrade your build definitions, please visit the following link: http://go.microsoft.com/fwlink/?LinkId=254563

Source code checked in, #99884

Project Collection Service Accounts — Mon, 01 Oct 2012 21:16:08 GMT

Checked in by server upgrade

Created Issue: Namespace _3DTools [33148]

jaime_olivares — Sat, 22 Sep 2012 16:26:06 GMT

_3DTools is not a good namespace at all. It will generate warnings in code quality checkers because of the leading underscore.
You can use any other like WPF.3DTools or similar

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

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

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 — 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: 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.