private void ApplyProjection()
{
double fovY = Math.PI / 2.0;
double translationZ = -Target.ActualHeight / Math.Tan(fovY / 2.0);
Matrix3D centerImageAtOrigin = TranslationTransform(
-Target.ActualWidth / 2.0,
-Target.ActualHeight / 2.0, 0);
Matrix3D rotateAboutY = RotateYTransform(this.Owner.Transform.Rotation.Y);
Matrix3D perspective = PerspectiveTransformFovRH(fovY,
Target.ActualWidth / Target.ActualHeight,
1.0,
1000.0);
Matrix3D viewport = ViewportTransform(Target.ActualWidth, Target.ActualHeight);
Matrix3D m = centerImageAtOrigin * TranslationTransform(
-this.Owner.Transform.Position.X + Target.ActualWidth / 2.0,
-this.Owner.Transform.Position.Y + Target.ActualHeight / 2.0,
-this.Owner.Transform.Position.Z);
m = m * CreateScaleTransform(1, 1, -1);
m = m * rotateAboutY;
m = m * perspective;
m = m * viewport;
Matrix3DProjection m3dProjection = new Matrix3DProjection();
m3dProjection.ProjectionMatrix = m;
Target.Projection = m3dProjection;
}
private void Test()
{
var test = new TransformGroup
{
Children = new TransformCollection
{
new TranslateTransform { X = 10, Y = 20 },
new RotateTransform { Angle = 45 }
}
};
var v = test.Value;
var st = new TransformGroup { Children = new TransformCollection { new SkewTransform { AngleX = 45 } } };
var tt = new TranslateTransform { X = 1 };
var tg1 = new TransformGroup { Children = new TransformCollection { st, tt } };
var tg2 = new TransformGroup { Children = new TransformCollection { tt, st } };
var tg3 = new TransformGroup { Children = new TransformCollection { st } };
var tg4 = new TransformGroup { Children = new TransformCollection { tt } };
var tg5 = new TransformGroup();
tg5.Children.Add(new TranslateTransform { X = 1, Y = 2 });
tg5.Children.Add(new RotateTransform { Angle = -90 });
var tg6 = new TransformGroup();
tg6.Children.Add(new RotateTransform { Angle = -90 });
tg6.Children.Add(new TranslateTransform { X = 1, Y = 2 });
var p = new RotateTransform { Angle = 90 }.Transform(new Point(1, 2));
var m3 = new Matrix3DProjection();
}
// <SnippetMatrix3DProjectionSample_code>
private void ApplyProjection(Object sender, PointerRoutedEventArgs e)
{
// Translate the image along the negative Z-axis such that it occupies 50% of the
// vertical field of view.
double fovY = Math.PI / 2.0;
double translationZ = -BeachImage.ActualHeight / Math.Tan(fovY / 2.0);
double theta = 20.0 * Math.PI / 180.0;
// You can create a 3D effect by creating a number of simple
// tranformation Matrix3D matrixes and then multiply them together.
Matrix3D centerImageAtOrigin = TranslationTransform(
-BeachImage.ActualWidth / 2.0,
-BeachImage.ActualHeight / 2.0, 0);
Matrix3D invertYAxis = CreateScaleTransform(1.0, -1.0, 1.0);
Matrix3D rotateAboutY = RotateYTransform(theta);
Matrix3D translateAwayFromCamera = TranslationTransform(0, 0, translationZ);
Matrix3D perspective = PerspectiveTransformFovRH(fovY,
LayoutRoot.ActualWidth / LayoutRoot.ActualHeight, // aspect ratio
1.0, // near plane
1000.0); // far plane
Matrix3D viewport = ViewportTransform(LayoutRoot.ActualWidth, LayoutRoot.ActualHeight);
Matrix3D m = Matrix3DHelper.Multiply(centerImageAtOrigin, invertYAxis);
m = Matrix3D.Multiply(m, rotateAboutY);
m = Matrix3D.Multiply(m, translateAwayFromCamera);
m = Matrix3D.Multiply(m, perspective);
m = Matrix3D.Multiply(m, viewport);
Matrix3DProjection m3dProjection = new Matrix3DProjection();
m3dProjection.ProjectionMatrix = m;
BeachImage.Projection = m3dProjection;
}
// <SnippetMatrix3DProjectionSimple_code>
private void ApplyProjection(Object sender, PointerRoutedEventArgs e)
{
Matrix3D m = new Matrix3D();
// This matrix simply translates the image 100 pixels
// down and 100 pixels right.
m.M11 = 1.0; m.M12 = 0.0; m.M13 = 0.0; m.M14 = 0.0;
m.M21 = 0.0; m.M22 = 1.0; m.M23 = 0.0; m.M24 = 0.0;
m.M31 = 0.0; m.M32 = 0.0; m.M33 = 1.0; m.M34 = 0.0;
m.OffsetX = 100; m.OffsetY = 100; m.OffsetZ = 0; m.M44 = 1.0;
Matrix3DProjection m3dProjection = new Matrix3DProjection();
m3dProjection.ProjectionMatrix = m;
BeachImage.Projection = m3dProjection;
}
private static Matrix3DProjection EnsureProjection(FrameworkElement view)
{
var projection = view.Projection;
var matrixProjection = projection as Matrix3DProjection;
if (projection != null && matrixProjection == null)
{
throw new InvalidOperationException("Unknown projection set on framework element.");
}
if (matrixProjection == null)
{
matrixProjection = new Matrix3DProjection();
view.Projection = matrixProjection;
}
return(matrixProjection);
}
void UpdateCatcher()
{
if (_clickCatcher == null)
{
return;
}
//_clickCatcher.Background = new SolidColorBrush (Colors.Red);
//_clickCatcher.Opacity = .5;
try {
// In this case Child is the _clickCatcher's parent
GeneralTransform general_xform = Child.TransformToVisual(null);
if (general_xform is Transform)
{
var xform = general_xform as Transform;
// clear any projections
_clickCatcher.Projection = null;
_clickCatcher.RenderTransform = (Transform)xform.Inverse;
}
else if (general_xform is InternalTransform)
{
var internal_xform = general_xform as InternalTransform;
var projection = new Matrix3DProjection();
projection.ProjectionMatrix = ((InternalTransform)internal_xform.Inverse).Matrix;
// clear any render transforms;
_clickCatcher.RenderTransform = null;
_clickCatcher.Projection = projection;
}
else
{
throw new Exception("Unknown Transform Type");
}
} catch (ArgumentException e) {
// Drop errors looking up the transform
}
_clickCatcher.Height = Application.Current.Host.Content.ActualHeight;
_clickCatcher.Width = Application.Current.Host.Content.ActualWidth;
}
private void ApplyProjection(Object sender, PointerRoutedEventArgs e)
{
// Translate the image along the negative Z-axis such that it occupies 50% of the
// vertical field of view.
Matrix3D m = new Matrix3D();
// This matrix simply translates the image 100 pixels
// down and 100 pixels right.
m.M11 = 1.0; m.M12 = 0.0; m.M13 = 0.0; m.M14 = 0.0;
m.M21 = 0.0; m.M22 = 1.0; m.M23 = 0.0; m.M24 = 0.0;
m.M31 = 0.0; m.M32 = 0.0; m.M33 = 1.0; m.M34 = 0.0;
m.OffsetX = 100; m.OffsetY = 100; m.OffsetZ = 0; m.M44 = 1.0;
Matrix3DProjection m3dProjection = new Matrix3DProjection();
m3dProjection.ProjectionMatrix = m;
BeachImage.Projection = m3dProjection;
}
void UpdateCatcher ()
{
if (_clickCatcher == null)
return;
//_clickCatcher.Background = new SolidColorBrush (Colors.Red);
//_clickCatcher.Opacity = .5;
try {
// In this case Child is the _clickCatcher's parent
GeneralTransform general_xform = Child.TransformToVisual (null);
if (general_xform is Transform) {
var xform = general_xform as Transform;
// clear any projections
_clickCatcher.Projection = null;
_clickCatcher.RenderTransform = (Transform)xform.Inverse;
} else if (general_xform is InternalTransform) {
var internal_xform = general_xform as InternalTransform;
var projection = new Matrix3DProjection();
projection.ProjectionMatrix = ((InternalTransform)internal_xform.Inverse).Matrix;
// clear any render transforms;
_clickCatcher.RenderTransform = null;
_clickCatcher.Projection = projection;
} else {
throw new Exception ("Unknown Transform Type");
}
} catch (ArgumentException e) {
// Drop errors looking up the transform
}
_clickCatcher.Height = Application.Current.Host.Content.ActualHeight;
_clickCatcher.Width = Application.Current.Host.Content.ActualWidth;
}
private void ApplyPerspectiveProjection(
FrameworkElement element,
double centerXOfRotation = 0.5,
double centerYOfRotation = 0.5,
double centerZOfRotation = 0.0,
double rotationX = 0.0,
double rotationY = 0.0,
double rotationZ = 0.0,
double localOffsetX = 0.0,
double localOffsetY = 0.0,
double localOffsetZ = 0.0,
double globalOffsetX = 0.0,
double globalOffsetY = 0.0,
double globalOffsetZ = 0.0,
double fovY = 57.0) // The field of view of a Planeprojection is 57.0 - thanks to Jaime Rodriguez http://blogs.msdn.com/b/jaimer/archive/2009/06/03/silverlight3-planeprojection-primer.aspx
{
var m = new Matrix3D();
double width = element.ActualWidth;
double height = element.ActualHeight;
// World definition
//-----------------
// Defines the central point of rotations for the element
// (that is the origin of the coordinate system)
m *= Helper3D.GetTranslationMatrix(
-width * centerXOfRotation,
-height * centerYOfRotation,
-centerZOfRotation);
// Local translation
m *= Helper3D.GetTranslationMatrix(
localOffsetX,
localOffsetY,
localOffsetZ);
// Inverts the Y axis (in 2D, the direction is down, in 3D, it's up)
// The resulting coordinate system is a left-handed one
m *= Helper3D.GetScaleMatrix(1.0, -1.0, 1.0);
//// Rotates the element
if (rotationX != 0.0)
{
m *= Helper3D.GetXRotationMatrix(rotationX);
}
if (rotationY != 0.0)
{
m *= Helper3D.GetYRotationMatrix(rotationY);
}
if (rotationZ != 0.0)
{
m *= Helper3D.GetZRotationMatrix(rotationZ);
}
// Global translation
m *= Helper3D.GetTranslationMatrix(
globalOffsetX,
globalOffsetY,
globalOffsetZ);
// View defintion
//---------------
// Camera's position
// Moves the camera on the Z-axis so that the element fits
// (the sign is negative because a camera inverts the Z axis in its coordinate system)
m *= Helper3D.GetTranslationMatrix(0.0, 0.0,
-height / Math.Tan(GeometryHelper.DegreeToRadian(fovY) / 2.0));
// Projection definition
//----------------------
// Represents the 3D scene in perspective
// The clip planes distance of a Planeprojection is 999.0 - thanks to Jaime Rodriguez http://blogs.msdn.com/b/jaimer/archive/2009/06/03/silverlight3-planeprojection-primer.aspx
m *= Helper3D.GetPerspectiveMatrix(
fovY,
width / height, // image format
1.0, // near plane
1000.0); // far plane
//0.0, // near plane
//999.0); // far plane
// Viewport definition
//--------------------
// Re-inverts the Y axis, to fit in the 2D coordinate system
// Cancels the initial rotation point translation
m *= new Matrix3D
{
M11 = width,
M22 = -height,
OffsetX = width * centerXOfRotation,
OffsetY = height * centerYOfRotation
};
// Applies the projection
//-----------------------
Matrix3DProjection m3dProjection = new Matrix3DProjection();
m3dProjection.ProjectionMatrix = m;
element.Projection = m3dProjection;
}
private void Detect()
{
if (isDetecting || !isInitialized)
{
return;
}
isDetecting = true;
var stopwatch = Stopwatch.StartNew();
try
{
// Update buffer size
var pixelWidth = (int)photoCamera.PreviewResolution.Width;
var pixelHeight = (int)photoCamera.PreviewResolution.Height;
if (buffer == null || buffer.Length != pixelWidth * pixelHeight)
{
buffer = new byte[pixelWidth * pixelHeight];
// Create constant transformations instances
// Center at origin of the 256x256 controls
centerAtOrigin = Matrix3DFactory.CreateTranslation(-128, -128, 0);
// Swap the y-axis and scale down by half
scale = Matrix3DFactory.CreateScale(0.5, -0.5, 0.5);
// Viewport transformation
viewport = Matrix3DFactory.CreateViewportTransformation(pixelWidth, pixelHeight);
matrix3DProjection = new Matrix3DProjection();
Txt.Projection = matrix3DProjection;
Img.Projection = matrix3DProjection;
}
// Grab snapshot
photoCamera.GetPreviewBufferY(buffer);
// Detect
var dr = arDetector.DetectAllMarkers(buffer, pixelWidth, pixelHeight);
// Draw the detected squares
//bitmap.Clear();
//ViewportOverlay.Source = bitmap;
// Calculate the projection matrix
if (dr.HasResults)
{
// Calculate the complete transformation matrix based on the first detection result
var world = centerAtOrigin * scale * dr[0].Transformation;
// Calculate the final transformation matrix by using the camera projection matrix
var m = Matrix3DFactory.CreateViewportProjection(world, Matrix3D.Identity, arDetector.Projection, viewport);
// Apply the final transformation matrix to the TextBox
matrix3DProjection.ProjectionMatrix = m;
//// Draw the detected squares
//foreach (var r in dr)
//{
// bitmap.DrawQuad((int)r.Square.P1.X, (int)r.Square.P1.Y, (int)r.Square.P2.X, (int)r.Square.P2.Y, (int)r.Square.P3.X, (int)r.Square.P3.Y, (int)r.Square.P4.X, (int)r.Square.P4.Y, Colors.Red);
//}
}
}
finally
{
isDetecting = false;
stopwatch.Stop();
TxtDiag.Text = string.Format("{0} ms", stopwatch.ElapsedMilliseconds);
}
}
private void Test()
{
var test = new TransformGroup
{
Children = new TransformCollection
{
new TranslateTransform {
X = 10, Y = 20
},
new RotateTransform {
Angle = 45
}
}
};
var v = test.Value;
var st = new TransformGroup {
Children = new TransformCollection {
new SkewTransform {
AngleX = 45
}
}
};
var tt = new TranslateTransform {
X = 1
};
var tg1 = new TransformGroup {
Children = new TransformCollection {
st, tt
}
};
var tg2 = new TransformGroup {
Children = new TransformCollection {
tt, st
}
};
var tg3 = new TransformGroup {
Children = new TransformCollection {
st
}
};
var tg4 = new TransformGroup {
Children = new TransformCollection {
tt
}
};
var tg5 = new TransformGroup();
tg5.Children.Add(new TranslateTransform {
X = 1, Y = 2
});
tg5.Children.Add(new RotateTransform {
Angle = -90
});
var tg6 = new TransformGroup();
tg6.Children.Add(new RotateTransform {
Angle = -90
});
tg6.Children.Add(new TranslateTransform {
X = 1, Y = 2
});
var p = new RotateTransform {
Angle = 90
}.Transform(new Point(1, 2));
var m3 = new Matrix3DProjection();
}
private void Detect()
{
if (isDetecting || !isInitialized)
{
return;
}
isDetecting = true;
var stopwatch = Stopwatch.StartNew();
try
{
// Update buffer size
var pixelWidth = (int)photoCamera.PreviewResolution.Width;
var pixelHeight = (int)photoCamera.PreviewResolution.Height;
if (buffer == null || buffer.Length != pixelWidth * pixelHeight)
{
buffer = new byte[pixelWidth * pixelHeight];
// Create constant transformations instances
// Center at origin of the 256x256 controls
centerAtOrigin = Matrix3DFactory.CreateTranslation(-128, -128, 0);
// Swap the y-axis and scale down by half
scale = Matrix3DFactory.CreateScale(0.5, -0.5, 0.5);
// Viewport transformation
viewport = Matrix3DFactory.CreateViewportTransformation(pixelWidth, pixelHeight);
matrix3DProjection = new Matrix3DProjection();
Txt.Projection = matrix3DProjection;
Img.Projection = matrix3DProjection;
}
// Grab snapshot
photoCamera.GetPreviewBufferY(buffer);
// Detect
var dr = arDetector.DetectAllMarkers(buffer, pixelWidth, pixelHeight);
// Draw the detected squares
//bitmap.Clear();
//ViewportOverlay.Source = bitmap;
// Calculate the projection matrix
if (dr.HasResults)
{
// Calculate the complete transformation matrix based on the first detection result
var world = centerAtOrigin * scale * dr[0].Transformation;
// Calculate the final transformation matrix by using the camera projection matrix
var m = Matrix3DFactory.CreateViewportProjection(world, Matrix3D.Identity, arDetector.Projection, viewport);
// Apply the final transformation matrix to the TextBox
matrix3DProjection.ProjectionMatrix = m;
//// Draw the detected squares
//foreach (var r in dr)
//{
// bitmap.DrawQuad((int)r.Square.P1.X, (int)r.Square.P1.Y, (int)r.Square.P2.X, (int)r.Square.P2.Y, (int)r.Square.P3.X, (int)r.Square.P3.Y, (int)r.Square.P4.X, (int)r.Square.P4.Y, Colors.Red);
//}
}
}
finally
{
isDetecting = false;
stopwatch.Stop();
TxtDiag.Text = string.Format("{0} ms", stopwatch.ElapsedMilliseconds);
}
}
