/// <summary>
/// Calc offset to align
/// </summary>
/// <returns></returns>
Point CalcOffsetToAlign(Matrix33 m)
{
double offx = 0;
double offy = 0;
var lt = m.Transform(0, 0);
var rb = m.Transform(_bmp.PixelWidth, _bmp.PixelHeight);
var dx = rb.X - lt.X;
var dy = rb.Y - lt.Y;
if (dx < this.ActualWidth)
{
var x = this.ActualWidth / 2 - dx / 2;
offx = x - lt.X;
}
else
{
if (lt.X > 0)
offx = -lt.X;
if (rb.X < this.ActualWidth)
offx = this.ActualWidth - rb.X;
}
if (dy < this.ActualHeight)
{
var y = this.ActualHeight / 2 - dy / 2;
offy = y - lt.Y;
}
else
{
if (lt.Y > 0)
offy = -lt.Y;
if (rb.Y < this.ActualHeight)
offy = this.ActualHeight - rb.Y;
}
return new Point(offx, offy);
}
/// <summary>
/// Update matrix
/// </summary>
/// <param name="mat">Matrix33 object</param>
void UpdateMatrix(Matrix33 mat)
{
_mat = mat;
_trans.Matrix = _mat.ToMatrix();
}
/// <summary>
/// Begin matrix animation
/// </summary>
/// <param name="beginmat">Source matrix</param>
/// <param name="endmat">Target matrix</param>
void BeginMatrixAnimation(
Matrix33 beginmat,
Matrix33 endmat,
int durationmillis)
{
_anibeginmat = beginmat;
_aniendmat = endmat;
if (_sbflick == null)
{
var ani = new DoubleAnimation
{
From = 0,
To = 1,
EasingFunction = new CubicEase { EasingMode = EasingMode.EaseOut },
Duration = TimeSpan.FromMilliseconds(FLICK_DURATION_IN_MILLIS)
};
Storyboard.SetTarget(ani, this);
Storyboard.SetTargetProperty(ani, new PropertyPath(AniTimelinePropertyName));
_sbflick = new Storyboard();
_sbflick.Children.Add(ani);
}
var doubleani = _sbflick.Children[0] as DoubleAnimation;
doubleani.Duration = TimeSpan.FromMilliseconds(durationmillis);
_sbflick.Begin();
}
/// <summary>
/// Pinch started
/// </summary>
/// <param name="sender">Event sender</param>
/// <param name="e">Event parameter</param>
void GestureListener_PinchStarted(
object sender,
PinchStartedGestureEventArgs e)
{
_pinchdownmat = _mat;
_pinchdown = _mat.Transform(e.GetPosition(_img));
}
/// <summary>
/// Pinch delta
/// </summary>
/// <param name="sender">Event sender</param>
/// <param name="e">Event parameter</param>
void GestureListener_PinchDelta(
object sender,
PinchGestureEventArgs e)
{
var scale = e.DistanceRatio;
var mat = _pinchdownmat;
mat.PostTranslate(-_pinchdown.X, -_pinchdown.Y);
mat.PostScale(scale, scale);
mat.PostTranslate(_pinchdown.X, _pinchdown.Y);
_mat = mat;
AlignPhoto();
if (_mat.Sx < _fitmat.Sx
|| _mat.Sy < _fitmat.Sy)
{
UpdateMatrix(_fitmat);
}
}
public Matrix33(Matrix33 m)
: this()
{
this = m;
}
/// <summary>
/// Bitmap to fit
/// </summary>
/// <param name="bmp"></param>
void BitmapToFit(BitmapSource bmp)
{
_img.Width = bmp.PixelWidth;
_img.Height = bmp.PixelHeight;
_img.Source = bmp;
_mat = Matrix33
.Create()
.SetRectToRect(new Rect(0, 0, bmp.PixelWidth, bmp.PixelHeight),
new Rect(0, 0, 480, 800),
Stretch.Uniform);
_trans.Matrix = _mat.ToMatrix();
_fitmat = _mat;
}
public bool IsSame(Matrix33 rhs)
{
return n00 == rhs.n00
&& n01 == rhs.n01
&& n02 == rhs.n02
&& n10 == rhs.n10
&& n11 == rhs.n11
&& n12 == rhs.n12
&& n20 == rhs.n20
&& n21 == rhs.n21
&& n22 == rhs.n22;
}
public static Matrix33 Interpolate(
Matrix33 a,
Matrix33 b,
double t)
{
double invt = 1.0 - t;
var m = Matrix33.Create();
m.n00 = (a.n00 * invt + b.n00 * t);
m.n01 = (a.n01 * invt + b.n01 * t);
m.n02 = (a.n02 * invt + b.n02 * t);
m.n10 = (a.n10 * invt + b.n10 * t);
m.n11 = (a.n11 * invt + b.n11 * t);
m.n12 = (a.n12 * invt + b.n12 * t);
m.n20 = (a.n20 * invt + b.n20 * t);
m.n21 = (a.n21 * invt + b.n21 * t);
m.n22 = (a.n22 * invt + b.n22 * t);
return m;
}
/// <summary>
/// This guy returns the inverse of matrix.
/// The code is from Ogre3d.
/// </summary>
/// <returns></returns>
public Matrix33 Inverse()
{
Matrix33 inv = new Matrix33
{
n00 = n11 * n22 - n12 * n21,
n01 = n02 * n21 - n01 * n22,
n02 = n01 * n12 - n02 * n11,
n10 = n12 * n20 - n10 * n22,
n11 = n00 * n22 - n02 * n20,
n12 = n02 * n10 - n00 * n12,
n20 = n10 * n21 - n11 * n20,
n21 = n01 * n20 - n00 * n21,
n22 = n00 * n11 - n01 * n10
};
double det =
n00 * inv.n00 +
n01 * inv.n10 +
n02 * inv.n20;
Debug.Assert(det >= 0.00001);
return inv.MulScala(1 / det);
}
public static Matrix33 Mul(Matrix33 m1, Matrix33 m2)
{
return new Matrix33
{
n00 = m1.n00 * m2.n00 + m1.n01 * m2.n10 + m1.n02 * m2.n20,
n01 = m1.n00 * m2.n01 + m1.n01 * m2.n11 + m1.n02 * m2.n21,
n02 = m1.n00 * m2.n02 + m1.n01 * m2.n12 + m1.n02 * m2.n22,
n10 = m1.n10 * m2.n00 + m1.n11 * m2.n10 + m1.n12 * m2.n20,
n11 = m1.n10 * m2.n01 + m1.n11 * m2.n11 + m1.n12 * m2.n21,
n12 = m1.n10 * m2.n02 + m1.n11 * m2.n12 + m1.n12 * m2.n22,
n20 = m1.n20 * m2.n00 + m1.n21 * m2.n10 + m1.n22 * m2.n20,
n21 = m1.n20 * m2.n01 + m1.n21 * m2.n11 + m1.n22 * m2.n21,
n22 = m1.n20 * m2.n02 + m1.n21 * m2.n12 + m1.n22 * m2.n22
};
}
public Matrix33 Mul(Matrix33 m)
{
this = Mul(this, m);
return this;
}
