public static Matrix3D GetTotalTransform(Camera cam, double aspectRatio)
{
Matrix3D matx = Matrix3D.Identity;
if (cam == null)
{
matx = ZeroMatrix;
}
else
{
if (cam.Transform != null)
{
Matrix3D matxCameraTransform = cam.Transform.Value;
if (!matxCameraTransform.HasInverse)
{
matx = ZeroMatrix;
}
else
{
matxCameraTransform.Invert();
matx.Append(matxCameraTransform);
}
}
matx.Append(CameraInfo.GetViewMatrix(cam));
matx.Append(CameraInfo.GetProjectionMatrix(cam, aspectRatio));
}
return(matx);
}
/// <summary>
/// Computes the transform from the inner space of the given
/// Visual3D to the 2D space of the Viewport3DVisual which
/// contains it.
///
/// The result will contain the transform of the given visual.
///
/// This method can fail if Camera.Transform is non-invertable
/// in which case the camera clip planes will be coincident and
/// nothing will render. In this case success will be false.
/// </summary>
/// <param name="visual"></param>
/// <param name="success"></param>
/// <returns></returns>
public static Matrix3D TryTransformTo2DAncestor(DependencyObject visual, out Viewport3DVisual viewport, out bool success)
{
success = false;
Matrix3D to2D = Matrix3D.Identity;
viewport = null;
if (!(visual is Visual3D))
{
throw new ArgumentException("Must be of type Visual3D.", "visual");
}
while (visual != null)
{
if (!(visual is ModelVisual3D))
{
break;
}
Transform3D transform = (Transform3D)visual.GetValue(ModelVisual3D.TransformProperty);
if (transform != null)
{
to2D.Append(transform.Value);
}
visual = VisualTreeHelper.GetParent(visual);
}
viewport = visual as Viewport3DVisual;
if (viewport == null)
{
if (visual != null)
{
// In WPF 3D v1 the only possible configuration is a chain of
// ModelVisual3Ds leading up to a Viewport3DVisual.
throw new ApplicationException(
String.Format("Unsupported type: '{0}'. Expected tree of ModelVisual3Ds leading up to a Viewport3DVisual.",
visual.GetType().FullName));
}
return(ZeroMatrix);
}
success = true;
to2D.Append(MathUtils.TryWorldToViewportTransform(viewport, out success));
if (!success)
{
return(ZeroMatrix);
}
return(to2D);
}
/// <summary>
/// Computes the transform from world space to the Viewport3DVisual's
/// inner 2D space.
///
/// This method can fail if Camera.Transform is non-invertable
/// in which case the camera clip planes will be coincident and
/// nothing will render. In this case success will be false.
/// </summary>
public static Matrix3D TryWorldToViewportTransform(Viewport3DVisual visual, out bool success)
{
Matrix3D result = TryWorldToCameraTransform(visual, out success);
if (success)
{
result.Append(GetProjectionMatrix(visual.Camera, Math2D.GetAspectRatio(visual.Viewport.Size)));
result.Append(GetHomogeneousToViewportTransform(visual.Viewport));
success = true;
}
return(result);
}
public static double GetRotationXZ(this Matrix3D matrix, double rotationZ)
{
// back off z rotation
Matrix3D matrix2 = new Matrix3D();
matrix2.Append(matrix);
matrix2 = matrix2.RotateXYZ(new Vector3D(0.0, 0.0, rotationZ * -1.0));
Vector3D localX = matrix2.Transform(new Vector3D(1, 0, 0));
Vector3D localY = matrix2.Transform(new Vector3D(0, 1, 0));
// rotation about the X axis
localY.X = 0.0;
double angle = Vector3D.AngleBetween(localY, new Vector3D(0, 1, 0));
double rotationX = localX.Z > 0 ? angle * -1.0 : angle;
if (Abs(rotationX - 180.0) > 0.01 && Abs(localY.Z) < 0.0001)
{
rotationX = 0.0;
}
if (Abs(localY.Y + 1.0) < 0.01)
{
rotationX = 0.0;
}
return(rotationX);
}
public static Matrix3D GetTotalTransform(Viewport3D viewport)
{
Matrix3D matx = GetCameraTransform(viewport);
matx.Append(GetViewportTransform(viewport));
return(matx);
}
public void OnKeyDown(KeyEventArgs args)
{
var f = 1.0 / ScaleFactor;
var viewMatrix = new Matrix3D();
viewMatrix.Append(_viewMatrix);
switch (args.Key)
{
case Key.Home:
viewMatrix = Matrix3D.Identity;
break;
case Key.OemPlus:
viewMatrix.Scale(new Vector3D(f, f, f));
break;
case Key.OemMinus:
viewMatrix.Scale(new Vector3D(f, f, f));
break;
default:
return;
}
_viewMatrix = viewMatrix;
}
public void OnMouseMove(Point pt, System.Windows.Controls.Viewport3D viewPort)
{
if (_mouseDown)
{
var viewMatrix = new Matrix3D();
var width = viewPort.ActualWidth;
var height = viewPort.ActualHeight;
viewMatrix.Append(_viewMatrix);
if (Keyboard.IsKeyDown(Key.LeftCtrl) || Keyboard.IsKeyDown(Key.RightCtrl))
{
}
else if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift))
{
var shiftX = 2 * (pt.X - _movePoint.X) / (width);
var shiftY = -2 * (pt.Y - _movePoint.Y) / (width);
viewMatrix.Translate(new Vector3D(shiftX, shiftY, 0));
_movePoint = pt;
}
else
{
var aY = 180 * (pt.X - _movePoint.X) / width;
var aX = 180 * (pt.Y - _movePoint.Y) / height;
viewMatrix.Rotate(new Quaternion(new Vector3D(1, 0, 0), aX));
viewMatrix.Rotate(new Quaternion(new Vector3D(0, 1, 0), aY));
_movePoint = pt;
}
_viewMatrix = viewMatrix;
}
}
public static Matrix3D GetTotalTransformViewport3DVisual(Viewport3DVisual vis)
{
Matrix3D matx = GetCameraTransform(vis);
matx.Append(GetViewportTransform(vis));
return(matx);
}
public static void Move(Vector3D direction, Vector3D rotation)
{
Matrix3D matrix = Matrix3D.Identity;
// translation
if (direction.X != 0)
{
matrix = Matrix3D.Multiply(matrix, MoveRight(direction.X));
}
if (direction.Y != 0)
{
matrix = Matrix3D.Multiply(matrix, MoveForwards(direction.Y));
}
// rotation
if (rotation.X != 0)
{
matrix = Matrix3D.Multiply(matrix, Pitch(rotation.X));
}
if (rotation.Y != 0)
{
matrix = Matrix3D.Multiply(matrix, Jaw(rotation.Y));
}
if (rotation.Z != 0)
{
matrix = Matrix3D.Multiply(matrix, Roll(rotation.Z));
}
OnMoving(matrix);
Position.Append(matrix);
}
/// <summary>
/// Computes the transform from world space to camera space
///
/// This method can fail if Camera.Transform is non-invertable
/// in which case the camera clip planes will be coincident and
/// nothing will render. In this case success will be false.
/// </summary>
public static Matrix3D TryWorldToCameraTransform(Viewport3DVisual visual, out bool success)
{
success = false;
if (visual == null)
{
return(ZeroMatrix);
}
Matrix3D result = Matrix3D.Identity;
Camera camera = visual.Camera;
if (camera == null)
{
return(ZeroMatrix);
}
Rect viewport = visual.Viewport;
if (viewport == Rect.Empty)
{
return(ZeroMatrix);
}
Transform3D cameraTransform = camera.Transform;
if (cameraTransform != null)
{
Matrix3D m = cameraTransform.Value;
if (!m.HasInverse)
{
return(ZeroMatrix);
}
m.Invert();
result.Append(m);
}
result.Append(GetViewMatrix(camera));
success = true;
return(result);
}
public static Matrix3D BodyToWorldMatrix(Body body, Point3D position, Vector3D direction)
{
Matrix3D result = Math3D.CreateZDirectionMatrix(position, direction);
result.Append(body.Transform.Value);
return(result);
}
/// <summary>
/// Converts the given point or ray hit test result into a PointHitTestResult.
/// In the case of a RayHitTestResult this is done by walking up the
/// transforming the 3D intersection into the coordinate space of the
/// Viewport3DVisual which contains the Visual3D subtree.
/// </summary>
internal static PointHitTestResult AsNearestPointHitTestResult(HitTestResult result)
{
if (result == null)
{
return(null);
}
PointHitTestResult resultAsPointHitTestResult = result as PointHitTestResult;
if (resultAsPointHitTestResult != null)
{
return(resultAsPointHitTestResult);
}
RayHitTestResult resultAsRayHitTestResult = result as RayHitTestResult;
if (resultAsRayHitTestResult != null)
{
Visual3D current = (Visual3D)resultAsRayHitTestResult.VisualHit;
Matrix3D worldTransform = Matrix3D.Identity;
while (true)
{
if (current.Transform != null)
{
worldTransform.Append(current.Transform.Value);
}
Visual3D parent3D = current.InternalVisualParent as Visual3D;
if (parent3D == null)
{
break;
}
current = parent3D;
}
Viewport3DVisual viewport = current.InternalVisualParent as Viewport3DVisual;
if (viewport != null)
{
Point4D worldPoint = ((Point4D)resultAsRayHitTestResult.PointHit) * worldTransform;
Point viewportPoint = viewport.WorldToViewport(worldPoint);
return(new PointHitTestResult(viewport, viewportPoint));
}
Debug.Fail("How did a ray hit a Visual3D not parented to a Viewport3DVisual?");
return(null);
}
Debug.Fail(String.Format("Unhandled HitTestResult type '{0}'", result.GetType().Name));
return(null);
}
/// <summary>
/// Gets the object space to world space transformation for the given DependencyObject
/// </summary>
/// <param name="visual">The visual whose world space transform should be found</param>
/// <param name="viewport">The Viewport3DVisual the Visual is contained within</param>
/// <returns>The world space transformation</returns>
private static Matrix3D GetWorldTransformationMatrix(DependencyObject visual, out Viewport3DVisual viewport)
{
Matrix3D worldTransform = Matrix3D.Identity;
viewport = null;
if (!(visual is Visual3D))
{
throw new ArgumentException("Must be of type Visual3D.", "visual");
}
while (visual != null)
{
Viewport3DVisual test;
test = visual as Viewport3DVisual;
if (test != null)
{
break;
}
//if (!(visual is ModelVisual3D))
//{
// break;
//}
Transform3D transform = (Transform3D)visual.GetValue(ModelVisual3D.TransformProperty);
if (transform != null)
{
worldTransform.Append(transform.Value);
}
visual = VisualTreeHelper.GetParent(visual);
}
viewport = visual as Viewport3DVisual;
if (viewport == null)
{
if (visual != null)
{
// In WPF 3D v1 the only possible configuration is a chain of
// ModelVisual3Ds leading up to a Viewport3DVisual.
throw new ApplicationException(
String.Format("Unsupported type: '{0}'. Expected tree of ModelVisual3Ds leading up to a Viewport3DVisual.",
visual.GetType().FullName));
}
return(ZeroMatrix);
}
return(worldTransform);
}
public static Matrix3D GetTransformToViewport(Visual3D visual)
{
Viewport3DVisual viewport;
Matrix3D to2D = GetTransformToWorld(visual, out viewport);
to2D.Append(GetWorldToViewportTransform(viewport));
return(to2D);
}
public static Matrix3D BodyToBodyMatrix(Body fromBody, Body toBody)
{
Matrix3D result = toBody.Transform.Value;
result.Invert();
result.Append(fromBody.Transform.Value);
return(result);
}
/// <summary>
/// Computes the transform from world space to the Viewport3DVisual's
/// inner 2D space.
///
/// This method can fail if Camera.Transform is non-invertable
/// in which case the camera clip planes will be coincident and
/// nothing will render. In this case success will be false.
/// </summary>
public static Matrix3D TryWorldToViewportTransform(Viewport3DVisual visual, out bool success)
{
success = false;
if (visual.Viewport.Width == 0 || visual.Viewport.Height == 0)
{
return(ZeroMatrix);
}
Matrix3D result = TryWorldToCameraTransform(visual, out success);
if (success)
{
result.Append(GetProjectionMatrix(visual.Camera, GetAspectRatio(visual.Viewport.Size)));
result.Append(GetHomogeneousToViewportTransform(visual.Viewport));
}
return(result);
}
/// <summary>
/// Maps the Point in 3D to point in 2D.
/// </summary>
/// <param name="point">The 3D point.</param>
/// <returns></returns>
private Point Point3DtoPoint2D(Point3D point)
{
Matrix3D matrix = ClothingManager.Instance.CameraTransform;
matrix.Append(ClothingManager.Instance.ViewportTransform);
Point3D pointTransformed = matrix.Transform(point);
return(new Point(pointTransformed.X, pointTransformed.Y));
}
///GetCameraTransform - obtener el objeto
// retorna: Matriz que representa la cameraTransform
public Matrix3D GetCameraTransform()
{
Matrix3D matx = Matrix3D.Identity;
if (Camera.Transform != null)
{
Matrix3D matxCameraTransform = Camera.Transform.Value;
if (!matxCameraTransform.HasInverse)
{
return(_zeroMatrix);
}
matxCameraTransform.Invert();
matx.Append(matxCameraTransform);
}
matx.Append(GetViewMatrix());
matx.Append(GetProjectionMatrix());
return(matx);
}
/// <summary>
/// Computes the transform from world space to the Viewport3DVisual's
/// inner 2D space.
///
/// This method can fail if Camera.Transform is non-invertable
/// in which case the camera clip planes will be coincident and
/// nothing will render. In this case success will be false.
/// </summary>
public static Matrix3D TryWorldToViewportTransform(Viewport3DVisual visual, out bool success)
{
success = false;
Matrix3D result = Matrix3D.Identity;
Camera camera = visual.Camera;
if (camera == null)
{
return(ZeroMatrix);
}
Rect viewport = visual.Viewport;
if (viewport == Rect.Empty)
{
return(ZeroMatrix);
}
Transform3D cameraTransform = camera.Transform;
if (cameraTransform != null)
{
Matrix3D m = cameraTransform.Value;
if (!m.HasInverse)
{
return(ZeroMatrix);
}
m.Invert();
result.Append(m);
}
result.Append(GetViewMatrix(camera));
result.Append(GetProjectionMatrix(camera, MathUtils.GetAspectRatio(viewport.Size)));
result.Append(GetHomogeneousToViewportTransform(viewport));
success = true;
return(result);
}
/// <summary>
/// builds & return the transformation from the root bone to this bone.
/// </summary>
public Matrix3D GetRootTransform()
{
Matrix3D transform = Matrix3D.Identity;
var current = this;
do
{
transform.Append(current.LocalTransform);
current = current.Parent;
} while (current != null);
return(transform);
}
/// <summary>
/// Computes the transform from the inner space of the given
/// Visual3D to the camera coordinate space
///
/// The result will contain the transform of the given visual.
///
/// This method can fail if Camera.Transform is non-invertable
/// in which case the camera clip planes will be coincident and
/// nothing will render. In this case success will be false.
/// </summary>
/// <param name="visual"></param>
/// <param name="success"></param>
/// <returns></returns>
public static Matrix3D TryTransformToCameraSpace(DependencyObject visual, out Viewport3DVisual viewport, out bool success)
{
Matrix3D toViewSpace = GetWorldTransformationMatrix(visual, out viewport);
toViewSpace.Append(MUtils.TryWorldToCameraTransform(viewport, out success));
if (!success)
{
return(ZeroMatrix);
}
return(toViewSpace);
}
/// <summary>
/// Computes the transform from the inner space of the given
/// Visual3D to the 2D space of the Viewport3DVisual which
/// contains it.
///
/// The result will contain the transform of the given visual.
///
/// This method can fail if Camera.Transform is non-invertable
/// in which case the camera clip planes will be coincident and
/// nothing will render. In this case success will be false.
/// </summary>
/// <param name="visual"></param>
/// <param name="success"></param>
/// <returns></returns>
public static Matrix3D TryTransformTo2DAncestor(DependencyObject visual, out Viewport3DVisual viewport, out bool success)
{
Matrix3D to2D = GetWorldTransformationMatrix(visual, out viewport);
to2D.Append(MUtils.TryWorldToViewportTransform(viewport, out success));
if (!success)
{
return(ZeroMatrix);
}
return(to2D);
}
// Return a matrix that combines the view, projection, and viewport transformations.
public static Matrix3D GetWorldToViewportMatrix(Viewport3DVisual visual)
{
Camera camera = visual.Camera;
Rect rect = visual.Viewport;
Matrix3D result = Matrix3D.Identity;
// If the camera has a transform, add its inverse to the result.
Transform3D transform = camera.Transform;
if ((transform != null) && (!transform.Value.IsIdentity))
{
Matrix3D matrix = transform.Value;
matrix.Invert();
result.Append(matrix);
}
// Add the view, projection, and viewport transformations.
result.Append(GetViewMatrix(camera));
result.Append(GetProjectionMatrix(camera, rect.Width / rect.Height));
result.Append(GetViewportMatrix(rect));
return(result);
}
public static Matrix3D GetTotalTransformModelVisual3D(ModelVisual3D mv3d)
{
Matrix3D matx = Matrix3D.Identity;
DependencyObject obj = mv3d;
while (!(obj is Viewport3DVisual))
{
// This occurs when the visual is parent-less.
if (obj == null)
{
return(ZeroMatrix);
}
else if (obj is ModelVisual3D)
{
if ((obj as ModelVisual3D).Transform != null)
{
matx.Append((obj as ModelVisual3D).Transform.Value);
}
}
else
{
throw new ApplicationException("didn't end in Viewport3DVisual");
}
obj = VisualTreeHelper.GetParent(obj);
}
// At this point, we know obj is Viewport3DVisual
Viewport3DVisual vis = obj as Viewport3DVisual;
Matrix3D matxViewport = GetTotalTransformViewport3DVisual(vis);
matx.Append(matxViewport);
return(matx);
}
/// <summary>
/// Computes the transform from the inner space of the given
/// Visual3D to the 2D space of the Viewport3DVisual which
/// contains it.
///
/// The result will contain the transform of the given visual.
///
/// This method can fail if Camera.Transform is non-invertable
/// in which case the camera clip planes will be coincident and
/// nothing will render. In this case success will be false.
/// </summary>
/// <param name="visual"></param>
/// <param name="success"></param>
/// <returns></returns>
public static Matrix3D TryTransformTo2DAncestor(DependencyObject visual, out Viewport3DVisual viewport, out bool success)
{
Matrix3D to2D = GetWorldTransformationMatrix(visual, out viewport);
if (viewport == null)
{
success = false;
return(default(Matrix3D));
}
to2D.Append(TryWorldToViewportTransform(viewport, out success));
if (!success)
{
return(ZeroMatrix);
}
return(to2D);
}
public static bool ToViewportTransform(DependencyObject visual, out Matrix3D matrix)
{
matrix = Matrix3D.Identity;
Viewport3DVisual?viewportVisual;
Matrix3D toWorld = GetWorldTransformationMatrix(visual, out viewportVisual);
bool success;
Matrix3D toViewport = TryWorldToViewportTransform(viewportVisual, out success);
if (!success)
{
return(false);
}
toWorld.Append(toViewport);
matrix = toWorld;
return(true);
}
/// <summary>
/// Gets the object space to world space (or a parent object space) transformation for the given 3D visual.
/// </summary>
public static Matrix3D GetTransformationMatrix(DependencyObject visual, DependencyObject relativeTo = null)
{
Matrix3D matrix = Matrix3D.Identity;
while (visual is ModelVisual3D)
{
Transform3D transform = (Transform3D)visual.GetValue(ModelVisual3D.TransformProperty);
if (transform != null)
{
matrix.Append(transform.Value);
}
visual = VisualTreeHelper.GetParent(visual);
if (visual == relativeTo)
{
break;
}
}
return(matrix);
}
public static double GetRotationX(this Matrix3D matrix, double rotationZ, double rotationY)
{
// back off z rotation and y rotation
Matrix3D matrix2 = new Matrix3D();
matrix2.Append(matrix);
matrix2 = matrix2.RotateXYZ(new Vector3D(0.0, 0.0, rotationZ * -1.0));
Matrix3D matrix3 = new Matrix3D();
matrix3.Append(matrix2);
matrix3 = matrix3.RotateXYZ(new Vector3D(0.0, rotationY * -1.0, 0.0));
Vector3D localY = matrix3.Transform(new Vector3D(0, 1, 0));
localY.X = 0.0;
double angle = Vector3D.AngleBetween(localY, new Vector3D(0, 1, 0));
double rotationX = localY.Z < 0 ? angle * -1.0 : angle;
// rotation about the X axis
return(rotationX);
}
/// <summary>
/// Computes the transform from the inner space of the given
/// Visual3D to the 2D space of the Viewport3DVisual which
/// contains it.
///
/// The result will contain the transform of the given visual.
///
/// This method can fail if Camera.Transform is non-invertable
/// in which case the camera clip planes will be coincident and
/// nothing will render. In this case success will be false.
/// </summary>
/// <param name="visual"></param>
/// <param name="success"></param>
/// <returns></returns>
public static Matrix3D TryTransformTo2DAncestor(DependencyObject visual, out Viewport3DVisual viewport, out bool success)
{
Matrix3D to2D = GetWorldTransformationMatrix(visual, out viewport);
// 2012/6/6
if (viewport == null)
{
success = false;
return(ZeroMatrix);
}
Debug.Assert(viewport != null, "");
to2D.Append(MathUtils.TryWorldToViewportTransform(viewport, out success));
if (!success)
{
return(ZeroMatrix);
}
return(to2D);
}
// 3D transformation
/// <summary>
/// Creates a matrix that represents the transformation from the local coordinate system
/// to another. This method supports three dimensional objects created via 'Sprite3D'.
/// </summary>
public Matrix3D GetTransformationMatrix3D(DisplayObject targetSpace)
{
DisplayObject currentObject;
Matrix3D outM = Matrix3D.Create();
if (targetSpace == this)
{
return(outM);
}
if (targetSpace == _parent || (targetSpace == null && _parent == null))
{
outM.CopyFrom(TransformationMatrix3D);
return(outM);
}
if (targetSpace == null || targetSpace == Base)
{
// targetCoordinateSpace 'null' represents the target space of the base object.
// -> move up from this to base
currentObject = this;
while (currentObject != targetSpace)
{
outM.Append(currentObject.TransformationMatrix3D);
currentObject = currentObject._parent;
}
return(outM);
}
if (targetSpace._parent == this) // optimization
{
outM = targetSpace.GetTransformationMatrix3D(this);
outM.Invert();
return(outM);
}
// 1. find a common parent of this and the target space
var commonParent = FindCommonParent(this, targetSpace);
// 2. move up from this to common parent
currentObject = this;
while (currentObject != commonParent)
{
outM.Append(currentObject.TransformationMatrix3D);
currentObject = currentObject._parent;
}
if (commonParent == targetSpace)
{
return(outM);
}
// 3. now move up from target until we reach the common parent
var sHelperMatrix3D = Matrix3D.Create();
currentObject = targetSpace;
while (currentObject != commonParent)
{
sHelperMatrix3D.Append(currentObject.TransformationMatrix3D);
currentObject = currentObject._parent;
}
// 4. now combine the two matrices
sHelperMatrix3D.Invert();
outM.Append(sHelperMatrix3D);
return(outM);
}
