public void Draw(AreaBase area, ref AreaDrawParams param)
{
_brush = Brushes.White;
_path = new Path(FillMode.Winding);
_path.AddRectangle(0d, 0d, param.AreaWidth, param.AreaHeight);
_path.End();
param.Context.Fill(_path, _brush);
_path.Free();
double graphWidth;
double graphHeight;
GraphSize(param.AreaWidth, param.AreaHeight, out graphWidth, out graphHeight);
_strokeParams = new StrokeParams()
{
LineCap = LineCap.Flat,
LineJoin = LineJoin.Miter,
Thickness = 2,
MiterLimit = 10.0
};
_brush = Brushes.Black;
_path = new Path(FillMode.Winding);
_path.NewFigure(xoffLeft, yoffTop);
_path.LineTo(xoffLeft, yoffTop + graphHeight);
_path.LineTo(xoffLeft + graphWidth, yoffTop + graphHeight);
_path.End();
param.Context.Stroke(_path, _brush, _strokeParams);
_path.Free();
var matrix = Matrix.SetIdentity();
matrix.Translate(xoffLeft, yoffTop);
param.Context.Transform(matrix);
_brush = (SolidColorBrush)_colorPicker.Color;
var a = _brush.A;
_brush.A = _brush.A / 2;
_path = ConstructGraph(graphWidth, graphHeight, true);
param.Context.Fill(_path, _brush);
_path.Free();
_path = ConstructGraph(graphWidth, graphHeight, false);
_brush.A = a;
param.Context.Stroke(_path, _brush, _strokeParams);
_path.Free();
if (_currentPoint != -1)
{
double[] xs, ys;
PointLocations(graphWidth, graphHeight, out xs, out ys);
_path = new Path(FillMode.Winding);
_path.NewFigureWithArc(xs[_currentPoint], ys[_currentPoint], 5, 0, 6.23, false);
_path.End();
param.Context.Fill(_path, _brush);
_path.Free();
}
}
private static void DrawGradient(ref AreaDrawParams param)
{
var areaSize = 250d;
var padding = 30d;
var circleRadius = (areaSize - padding) / 2;
var path = new Path(FillMode.Winding);
path.AddRectangle(-50, -50, areaSize + 100, areaSize + 100);
path.End();
var brush = Brushes.Lime;
param.Context.Fill(path, brush);
path.Free();
path = new Path(FillMode.Winding);
path.AddRectangle(0, 0, areaSize, areaSize);
path.End();
brush = Brushes.White;
param.Context.Fill(path, brush);
brush = Brushes.Red;
var sp = new StrokeParams()
{
Thickness = 1
};
param.Context.Stroke(path, brush, sp);
path.Free();
path = new Path(FillMode.Winding);
path.NewFigureWithArc(areaSize / 2, areaSize / 2, circleRadius, 0, 2 * Math.PI, false);
path.End();
var stops = new GradientStop[2];
stops[0] = new GradientStop()
{
Pos = 0, R = 0, G = 1, B = 1, A = 1
};
stops[1] = new GradientStop()
{
Pos = 1, R = 0, G = 0, B = 1, A = 1
};
var linear = new LinearGradientBrush
{
StartPoint = new Point(areaSize / 2, padding),
EndPoint = new Point(areaSize / 2, areaSize - padding),
Stops = stops
};
param.Context.Fill(path, linear);
path.Free();
}
private static void DrawDashes(ref AreaDrawParams param)
{
var offset = -50;
var dashes = new double[] { 50d, 10d, 10d, 10d };
var brush = Brushes.Black;
var sp = new StrokeParams();
sp.Dashes = dashes;
sp.DashPhase = offset;
sp.Thickness = 10;
var path = new Path(FillMode.Winding);
path.NewFigure(128.0, 25.6);
path.LineTo(230.4, 230.4);
path.LineTo(230.4 - 102.4, 230.4 + 0.0);
path.BezierTo(51.2, 230.4, 51.2, 128.0, 128.0, 128.0);
path.End();
param.Context.Stroke(path, brush, sp);
path.Free();
}
private static void DrawOriginal(ref AreaDrawParams param)
{
var sp = new StrokeParams()
{
Thickness = 1
};
var brush = Brushes.Red;
var path = new Path(FillMode.Winding);
path.NewFigure(param.ClipX + 5, param.ClipY + 5);
path.LineTo(param.ClipX + param.ClipWidth - 5, param.ClipY + param.ClipHeight - 5);
path.End();
param.Context.Stroke(path, brush, sp);
path.Free();
brush = Brushes.Blue;
brush.B = 0.75;
path = new Path(FillMode.Winding);
path.NewFigure(param.ClipX, param.ClipY);
path.LineTo(param.ClipX + param.ClipWidth, param.ClipY);
path.LineTo(50, 150);
path.LineTo(50, 50);
path.CloseFigure();
path.End();
sp.Thickness = 5;
sp.LineJoin = LineJoin.Round;
param.Context.Stroke(path, brush, sp);
path.Free();
brush = Brushes.Green;
brush.G = 0.75;
brush.A = 0.5;
path = new Path(FillMode.Winding);
path.AddRectangle(120, 80, 50, 50);
path.End();
param.Context.Fill(path, brush);
path.Free();
brush.G = 0.5;
brush.A = 1;
path = new Path(FillMode.Winding);
path.NewFigure(5.5, 10.5);
path.LineTo(5.5, 50.5);
path.End();
sp.LineJoin = LineJoin.Miter;
sp.Thickness = 1;
param.Context.Stroke(path, brush, sp);
path.Free();
brush.R = 0.5;
brush.G = 0.75;
path = new Path(FillMode.Winding);
path.NewFigure(400, 100);
path.ArcTo(400, 100, 50, 30 * (Math.PI / 180), 300 * (Math.PI / 180), false);
path.LineTo(400, 100);
path.NewFigureWithArc(510, 100, 50, 30 * (Math.PI / 180), 300 * (Math.PI / 180), false);
path.CloseFigure();
path.NewFigure(400, 210);
path.ArcTo(400, 210, 50, 30 * (Math.PI / 180), 330 * (Math.PI / 180), false);
path.LineTo(400, 210);
path.NewFigureWithArc(510, 210, 50, 30 * (Math.PI / 180), 330 * (Math.PI / 180), false);
path.CloseFigure();
path.End();
param.Context.Stroke(path, brush, sp);
path.Free();
brush.R = 0;
brush.G = 0.5;
brush.B = 0.75;
path = new Path(FillMode.Winding);
path.NewFigure(300, 300);
path.BezierTo(350, 320, 310, 390, 435, 372);
path.End();
param.Context.Stroke(path, brush, sp);
path.Free();
}
