private static PageParameters? ComputePage(UIElement source, Point p, CornerOrigin origin)
{
CheckParams(ref source, ref p, origin);
PageParameters _parameters = new PageParameters(source.RenderSize);
double ratio = ComputeProgressRatio(source, p, origin);
if (ratio > 1.5)
ratio = (2 - ratio) / 0.5;
else
ratio = 1;
_parameters.Page0ShadowOpacity = ratio;
double xc = source.RenderSize.Width;
double yc = source.RenderSize.Height;
switch (origin)
{
case CornerOrigin.TopLeft:
p.X = xc - p.X;
p.Y = yc - p.Y;
break;
case CornerOrigin.TopRight:
p.Y = yc - p.Y;
break;
case CornerOrigin.BottomLeft:
p.X = xc - p.X;
break;
}
if (p.X >= xc)
return null;
// x = a * y + b
double a = -(p.Y - yc) / (p.X - xc);
double b = (xc + p.X) / 2 - a * ((yc + p.Y) / 2);
double h1 = (xc - b) / a;
double l1 = a * yc + b;
double angle = (Math.Atan((xc - p.X) / (h1 - p.Y))) * 180 / Math.PI;
if ((a < 0) && (p.Y < h1))
angle = angle - 180;
switch (origin)
{
case CornerOrigin.BottomRight:
_parameters.Page1RotateAngle = -angle;
_parameters.Page1RotateCenterX = p.X;
_parameters.Page1RotateCenterY = p.Y;
_parameters.Page1TranslateX = p.X;
_parameters.Page1TranslateY = p.Y - yc;
break;
case CornerOrigin.TopLeft:
_parameters.Page1RotateAngle = -angle;
_parameters.Page1RotateCenterX = xc - p.X;
_parameters.Page1RotateCenterY = yc - p.Y;
_parameters.Page1TranslateX = -p.X;
_parameters.Page1TranslateY = yc - p.Y;
break;
case CornerOrigin.TopRight:
_parameters.Page1RotateAngle = angle;
_parameters.Page1RotateCenterX = p.X;
_parameters.Page1RotateCenterY = yc - p.Y;
_parameters.Page1TranslateX = p.X;
_parameters.Page1TranslateY = yc - p.Y;
break;
case CornerOrigin.BottomLeft:
_parameters.Page1RotateAngle = angle;
_parameters.Page1RotateCenterX = xc - p.X;
_parameters.Page1RotateCenterY = p.Y;
_parameters.Page1TranslateX = -p.X;
_parameters.Page1TranslateY = p.Y - yc;
break;
}
switch (origin)
{
case CornerOrigin.BottomRight:
if (angle < 0)
{
_parameters.Page1ClippingFigure.StartPoint = new Point(0, yc);
_parameters.Page1ClippingFigure.Segments.Clear();
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(xc - l1, yc), false));
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(0, h1), false));
}
else
{
_parameters.Page1ClippingFigure.StartPoint = new Point(0, 0);
_parameters.Page1ClippingFigure.Segments.Clear();
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(xc - b, 0), false));
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(0, h1), false));
}
break;
case CornerOrigin.TopLeft:
if (angle < 0)
{
_parameters.Page1ClippingFigure.StartPoint = new Point(xc, 0);
_parameters.Page1ClippingFigure.Segments.Clear();
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(l1, 0), false));
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(xc, yc - h1), false));
}
else
{
_parameters.Page1ClippingFigure.StartPoint = new Point(xc, yc);
_parameters.Page1ClippingFigure.Segments.Clear();
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(b, yc), false));
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(xc, yc - h1), false));
}
break;
case CornerOrigin.BottomLeft:
if (angle < 0)
{
_parameters.Page1ClippingFigure.StartPoint = new Point(xc, yc);
_parameters.Page1ClippingFigure.Segments.Clear();
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(l1, yc), false));
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(xc, h1), false));
}
else
{
_parameters.Page1ClippingFigure.StartPoint = new Point(xc, 0);
_parameters.Page1ClippingFigure.Segments.Clear();
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(b, 0), false));
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(xc, h1), false));
}
break;
case CornerOrigin.TopRight:
if (angle < 0)
{
_parameters.Page1ClippingFigure.StartPoint = new Point(0, 0);
_parameters.Page1ClippingFigure.Segments.Clear();
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(xc - l1, 0), false));
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(0, yc - h1), false));
}
else
{
_parameters.Page1ClippingFigure.StartPoint = new Point(0, yc);
_parameters.Page1ClippingFigure.Segments.Clear();
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(xc - b, yc), false));
_parameters.Page1ClippingFigure.Segments.Add(new LineSegment(new Point(0, yc - h1), false));
}
break;
}
_parameters.Page2ClippingFigure.StartPoint = new Point(xc - _parameters.Page1ClippingFigure.StartPoint.X, _parameters.Page1ClippingFigure.StartPoint.Y);
_parameters.Page2ClippingFigure.Segments = _parameters.Page1ClippingFigure.Segments.Clone();
((LineSegment)_parameters.Page2ClippingFigure.Segments[0]).Point
= new Point(xc - ((LineSegment)_parameters.Page2ClippingFigure.Segments[0]).Point.X,
((LineSegment)_parameters.Page2ClippingFigure.Segments[0]).Point.Y);
((LineSegment)_parameters.Page2ClippingFigure.Segments[1]).Point
= new Point(xc - ((LineSegment)_parameters.Page2ClippingFigure.Segments[1]).Point.X,
((LineSegment)_parameters.Page2ClippingFigure.Segments[1]).Point.Y);
Point refletStartPoint;
Point refletEndPoint;
CornerOrigin oppositeOrigin = CornerOrigin.TopLeft;
switch (origin)
{
case CornerOrigin.BottomLeft:
oppositeOrigin = CornerOrigin.BottomRight;
break;
case CornerOrigin.BottomRight:
oppositeOrigin = CornerOrigin.BottomLeft;
break;
case CornerOrigin.TopLeft:
oppositeOrigin = CornerOrigin.TopRight;
break;
case CornerOrigin.TopRight:
oppositeOrigin = CornerOrigin.TopLeft;
break;
}
LinearGradientHelper.ComputePointsFromTop(xc, yc, xc - l1, yc - h1, 20, 20,
oppositeOrigin,
out refletStartPoint,
out refletEndPoint);
_parameters.Page1ReflectionStartPoint = refletStartPoint;
_parameters.Page1ReflectionEndPoint = refletEndPoint; //new Point(1, 1 / Math.Tan((90 - angleClipping) * Math.PI / 180));
Point startPoint;
Point endPoint;
double d = Math.Sqrt(Math.Pow(p.X - xc, 2) + Math.Pow(p.Y - yc, 2));
double r1 = d / 10;
double r2 = d / 10;
LinearGradientHelper.ComputePoints(xc, yc, xc - l1, yc - h1, r1, r2,
origin, out startPoint, out endPoint);
_parameters.Page0ShadowStartPoint = startPoint;
_parameters.Page0ShadowEndPoint = endPoint;
return _parameters;
}
private void ApplyParameters(PageParameters parameters)
{
pageReflection.Opacity = parameters.Page0ShadowOpacity;
rectangleRotate.Angle = parameters.Page1RotateAngle;
rectangleRotate.CenterX = parameters.Page1RotateCenterX;
rectangleRotate.CenterY = parameters.Page1RotateCenterY;
rectangleTranslate.X = parameters.Page1TranslateX;
rectangleTranslate.Y = parameters.Page1TranslateY;
clippingFigure.Figures.Clear();
clippingFigure.Figures.Add(parameters.Page1ClippingFigure);
RectangleGeometry rg = (RectangleGeometry) clippingPage0.Geometry1;
rg.Rect = new Rect(parameters.RenderSize);
PathGeometry pg = (PathGeometry) clippingPage0.Geometry2;
pg.Figures.Clear();
pg.Figures.Add(parameters.Page2ClippingFigure);
pageReflection.StartPoint = parameters.Page1ReflectionStartPoint;
pageReflection.EndPoint = parameters.Page1ReflectionEndPoint;
pageShadow.StartPoint = parameters.Page0ShadowStartPoint;
pageShadow.EndPoint = parameters.Page0ShadowEndPoint;
}
private static PageParameters ResetPage(UIElement source, CornerOrigin origin)
{
PageParameters _parameters = new PageParameters(source.RenderSize);
_parameters.Page0ShadowOpacity = 0;
_parameters.Page1ClippingFigure = new PathFigure();
_parameters.Page1ReflectionStartPoint = new Point(0, 0);
_parameters.Page1ReflectionEndPoint = new Point(0, 0);
_parameters.Page1RotateAngle = 0;
_parameters.Page1RotateCenterX = 0;
_parameters.Page1RotateCenterY = 0;
_parameters.Page1TranslateX = 0;
_parameters.Page1TranslateY = 0;
_parameters.Page2ClippingFigure = new PathFigure();
_parameters.Page0ShadowStartPoint = new Point(0, 0);
_parameters.Page0ShadowEndPoint = new Point(0, 0);
return _parameters;
}