public static DisplayMatrix BoundsToMatrix(Rect rect, Size defaultSize)
{
DisplayMatrix data = new DisplayMatrix();
//Point corner = rect.TopLeft;
//Vector sizeVector = new Vector(rect.Size.Width, rect.Size.Height);
Point center = rect.TopLeft + new Vector(rect.Width / 2, rect.Height / 2);
Vector scale = new Vector();
if (defaultSize.Width == 0 || defaultSize.Height == 0)
{
throw new DivideByZeroException();
}
double scaleX = rect.Size.Width / defaultSize.Width;
double scaleY = rect.Size.Height / defaultSize.Height;
scale.X = Math.Min(scaleX, scaleY);
scale.Y = Math.Min(scaleX, scaleY);
//Vector offset = ScatterMatrixHelper.CalculateRenderOffset(defaultSize, new Point(0.5, 0.5), center, 0.0, scale);
//data.Center = new Point(offset.X, offset.Y);
data.Scale = scale;
data.Center = center;
return(data);
}
public static void OrientationPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
DisplayMatrix data = obj as DisplayMatrix;
if (data == null)
{
return;
}
data._orientation = MathUtility.NormalizeAngle((double)e.NewValue);
data.OnViewChanged();
}
public static void ScalePropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
DisplayMatrix data = obj as DisplayMatrix;
if (data == null)
{
return;
}
data._scale = (Vector)e.NewValue;
data.UpdateActualSizeFromScale();
data.OnViewChanged();
}
public static void CenterPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
DisplayMatrix data = obj as DisplayMatrix;
if (data == null)
{
return;
}
data._center = (Point)e.NewValue;
data.OnViewChanged();
//data.UpdateMatrix();
}
public static Rect MatrixToBounds(DisplayMatrix data, Size size)
{
Vector sizeVector = new Vector(size.Width, size.Height);
sizeVector = data.TransformMatrix.Transform(sizeVector);
Vector radius = new Vector(size.Width / 2, size.Height / 2);
radius = data.TransformMatrix.Transform(radius);
Point corner = data.Center - radius;
return(new Rect(corner, sizeVector));
}
public static void UpdateScatterMatrix(FrameworkElement element, Size size, DisplayMatrix matrix)
{
UpdateScatterMatrix(element, size, matrix.Center, matrix.Orientation, matrix.Scale);
}
