MainWindow.xaml.cs

/*
    VectSharp - A light library for C# vector graphics.
    Copyright (C) 2020-2022 Giorgio Bianchini

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as
    published by the Free Software Foundation, version 3.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program. If not, see <http://www.gnu.org/licenses/>
*/

using Avalonia;
using Avalonia.Controls;
using Avalonia.Controls.Shapes;
using Avalonia.Markup.Xaml;
using System;
using System.Collections.Generic;
using System.Linq;
using VectSharp;
using VectSharp.Canvas;
using VectSharp.PDF;
using VectSharp.Raster;
using VectSharp.Raster.ImageSharp;
using VectSharp.SVG;
using VectSharp.Filters;

namespace VectSharp.Demo
{
    public class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            LoadDocument();
        }


        private void LoadDocument()
        {
            //Create a new document
            Document doc = new Document();

            //Add a page to the document
            doc.Pages.Add(new Page(4000, 2600));

            //Set the page's background
            doc.Pages.Last().Background = Colour.FromRgba(35, 127, 255, 0.05);

            //Obtain the page's graphics object
            Graphics gpr = doc.Pages.Last().Graphics;

            //Text samples using default fonts
            //To use a custom font in TTF format, supply the path to the font's TTF file to the FontFamily(string) constructor
            gpr.FillText(200, 200, "Times-Roman", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.TimesRoman), 120), Colour.FromRgb(0, 0, 0));
            gpr.FillText(200, 340, "Times-Bold", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.TimesBold), 120), Colour.FromRgb(127, 127, 127));
            gpr.FillText(200, 480, "Times-Italic", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.TimesItalic), 120), Colour.FromRgb(136, 0, 21));
            gpr.FillText(200, 620, "Times-BoldItalic", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.TimesBoldItalic), 120), Colour.FromRgb(237, 28, 36));

            gpr.FillText(200, 860, "Helvetica", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 120), Colour.FromRgb(255, 174, 201));
            gpr.FillText(200, 1000, "Helvetica-Bold", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.HelveticaBold), 120), Colour.FromRgb(255, 127, 39));
            gpr.FillText(200, 1140, "Helvetica-Oblique", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.HelveticaOblique), 120), Colour.FromRgb(255, 242, 0));
            gpr.FillText(200, 1280, "Helvetica-BoldOblique", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.HelveticaBoldOblique), 120), Colour.FromRgb(181, 230, 29));

            //Using a RadialGradientBrush
            //Note that in Avalonia (and thus, VectSharp.Canvas), weird things may happen if the centre and the focal point do not coincide (https://github.com/AvaloniaUI/Avalonia/issues/6017)
            RadialGradientBrush radialGradient = new RadialGradientBrush(new Point(200, 1520), new Point(200, 1520), 800, new GradientStop(Colour.FromRgb(237, 28, 36), 0), new GradientStop(Colour.FromRgb(34, 177, 76), 0.33), new GradientStop(Colour.FromRgb(0, 162, 232), 0.66), new GradientStop(Colour.FromRgb(255, 127, 39), 1));

            gpr.FillText(200, 1520, "Courier", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Courier), 120), radialGradient);
            gpr.FillText(200, 1660, "Courier-Bold", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.CourierBold), 120), radialGradient);
            gpr.FillText(200, 1800, "Courier-Oblique", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.CourierOblique), 120), radialGradient);
            gpr.FillText(200, 1940, "Courier-BoldOblique", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.CourierBoldOblique), 120), radialGradient);

            //Using a LinearGradientBrush
            LinearGradientBrush linearGradient = new LinearGradientBrush(new Point(200, 2180), new Point(1320, 2400), new GradientStop(Colour.FromRgb(63, 72, 204), 0), new GradientStop(Colour.FromRgb(163, 73, 204), 1));

            gpr.FillText(200, 2180, "Σψμβολ", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Symbol), 120), linearGradient);
            gpr.FillText(200, 2320, "✺❁❐❆✤❉■❇❂❁▼▲", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.ZapfDingbats), 120), linearGradient);

            //Text metrics sample
            string testString = "VectSharp";
            Font timesBI = new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.TimesBoldItalic), 240);
            Font.DetailedFontMetrics metrics = timesBI.MeasureTextAdvanced(testString);
            gpr.FillText(2000, 500, testString, timesBI, Colour.FromRgb(0, 0, 0), textBaseline: TextBaselines.Baseline);

            //Text baseline
            gpr.StrokePath(new GraphicsPath().MoveTo(1900, 500).LineTo(2050 + metrics.Width, 500), Colour.FromRgb(237, 28, 36), lineWidth: 5);
            gpr.FillText(1880 - gpr.MeasureText("Baseline", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 50)).Width, 500, "Baseline", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 50), Colour.FromRgb(237, 28, 36), textBaseline: TextBaselines.Middle);

            //Font ascent and descent
            gpr.StrokePath(new GraphicsPath().MoveTo(1900, 500 - timesBI.Ascent).LineTo(2100 + metrics.Width, 500 - timesBI.Ascent), Colour.FromRgb(255, 127, 39), lineWidth: 5);
            gpr.FillText(2120 + metrics.Width, 500 - timesBI.Ascent, "Ascent", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 50), Colour.FromRgb(255, 127, 39), textBaseline: TextBaselines.Middle);

            gpr.StrokePath(new GraphicsPath().MoveTo(1900, 500 - timesBI.Descent).LineTo(2100 + metrics.Width, 500 - timesBI.Descent), Colour.FromRgb(255, 127, 39), lineWidth: 5);
            gpr.FillText(2120 + metrics.Width, 500 - timesBI.Descent, "Descent", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 50), Colour.FromRgb(255, 127, 39), textBaseline: TextBaselines.Middle);


            //Text top and bottom
            gpr.StrokePath(new GraphicsPath().MoveTo(1900, 500 - metrics.Top).LineTo(2050 + metrics.Width, 500 - metrics.Top), Colour.FromRgb(0, 162, 232), lineWidth: 5);
            gpr.FillText(1880 - gpr.MeasureText("Top", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 50)).Width, 500 - metrics.Top, "Top", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 50), Colour.FromRgb(0, 162, 232), textBaseline: TextBaselines.Middle);

            gpr.StrokePath(new GraphicsPath().MoveTo(1900, 500 - metrics.Bottom).LineTo(2050 + metrics.Width, 500 - metrics.Bottom), Colour.FromRgb(0, 162, 232), lineWidth: 5);
            gpr.FillText(1880 - gpr.MeasureText("Bottom", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 50)).Width, 500 - metrics.Bottom, "Bottom", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 50), Colour.FromRgb(0, 162, 232), textBaseline: TextBaselines.Middle);

            gpr.StrokePath(new GraphicsPath().MoveTo(2065 + metrics.Width, 520 - metrics.Top).LineTo(2075 + metrics.Width, 500 - metrics.Top).LineTo(2085 + metrics.Width, 520 - metrics.Top).MoveTo(2075 + metrics.Width, 500 - metrics.Top).LineTo(2075 + metrics.Width, 500 - metrics.Bottom).MoveTo(2065 + metrics.Width, 480 - metrics.Bottom).LineTo(2075 + metrics.Width, 500 - metrics.Bottom).LineTo(2085 + metrics.Width, 480 - metrics.Bottom), Colour.FromRgb(0, 162, 232), lineWidth: 5);

            //Text width
            gpr.StrokePath(new GraphicsPath().MoveTo(2000, 425 - timesBI.Ascent).LineTo(2000, 550 - timesBI.Descent).MoveTo(2000 + metrics.Width, 425 - timesBI.Ascent).LineTo(2000 + metrics.Width, 550 - timesBI.Descent), Colour.FromRgb(63, 72, 204), lineWidth: 5);
            gpr.StrokePath(new GraphicsPath().MoveTo(2020, 390 - timesBI.Ascent).LineTo(2000, 400 - timesBI.Ascent).LineTo(2020, 410 - timesBI.Ascent).MoveTo(2000, 400 - timesBI.Ascent).LineTo(2000 + metrics.Width, 400 - timesBI.Ascent).MoveTo(1980 + metrics.Width, 390 - timesBI.Ascent).LineTo(2000 + metrics.Width, 400 - timesBI.Ascent).LineTo(1980 + metrics.Width, 410 - timesBI.Ascent), Colour.FromRgb(63, 72, 204), lineWidth: 5);
            gpr.FillText(2000 + metrics.Width / 2 - gpr.MeasureText("Width", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 50)).Width / 2, 380 - timesBI.Ascent, "Width", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 50), Colour.FromRgb(63, 72, 204), textBaseline: TextBaselines.Bottom);

            //Left- and right-side bearing
            gpr.StrokePath(new GraphicsPath().MoveTo(2000 - metrics.LeftSideBearing, 450 - timesBI.Ascent).LineTo(2000 - metrics.LeftSideBearing, 550 - timesBI.Descent).MoveTo(2000 + metrics.Width + metrics.RightSideBearing, 450 - timesBI.Ascent).LineTo(2000 + metrics.Width + metrics.RightSideBearing, 550 - timesBI.Descent), Colour.FromRgb(163, 73, 204), lineWidth: 5);
            gpr.StrokePath(new GraphicsPath().MoveTo(2000, 565 - timesBI.Descent).LineTo(2000, 585 - timesBI.Descent).MoveTo(2000, 575 - timesBI.Descent).LineTo(2000 - metrics.LeftSideBearing, 575 - timesBI.Descent).MoveTo(2000 - metrics.LeftSideBearing, 565 - timesBI.Descent).LineTo(2000 - metrics.LeftSideBearing, 585 - timesBI.Descent), Colour.FromRgb(163, 73, 204), lineWidth: 5);
            gpr.StrokePath(new GraphicsPath().MoveTo(2000 + metrics.Width + metrics.RightSideBearing, 565 - timesBI.Descent).LineTo(2000 + metrics.Width + metrics.RightSideBearing, 585 - timesBI.Descent).MoveTo(2000 + metrics.Width + metrics.RightSideBearing, 575 - timesBI.Descent).LineTo(2000 + metrics.Width, 575 - timesBI.Descent).MoveTo(2000 + metrics.Width, 565 - timesBI.Descent).LineTo(2000 + metrics.Width, 585 - timesBI.Descent), Colour.FromRgb(163, 73, 204), lineWidth: 5);

            gpr.FillText(2000, 600 - timesBI.Descent, "Left-side bearing", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 50), Colour.FromRgb(163, 73, 164));
            gpr.FillText(2000 + metrics.Width - gpr.MeasureText("Right-side bearing", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 50)).Width, 600 - timesBI.Descent, "Right-side bearing", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 50), Colour.FromRgb(163, 73, 164));



            //Text metrics sample #2
            Font biggerTimes = new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.TimesBoldItalic), 300);

            Font.DetailedFontMetrics fMetrics = biggerTimes.MeasureTextAdvanced("f");
            Font.DetailedFontMetrics qMetrics = biggerTimes.MeasureTextAdvanced("q");

            gpr.StrokePath(new GraphicsPath().MoveTo(2050, 1200).LineTo(2750 + qMetrics.Width, 1200), Colour.FromRgb(237, 28, 36), lineWidth: 5);
            gpr.StrokePath(new GraphicsPath().MoveTo(2050, 1200 - biggerTimes.Ascent).LineTo(2750 + qMetrics.Width, 1200 - biggerTimes.Ascent), Colour.FromRgb(255, 127, 39), lineWidth: 5);
            gpr.StrokePath(new GraphicsPath().MoveTo(2050, 1200 - biggerTimes.Descent).LineTo(2750 + qMetrics.Width, 1200 - biggerTimes.Descent), Colour.FromRgb(255, 127, 39), lineWidth: 5);

            gpr.StrokePath(new GraphicsPath().MoveTo(2050, 1200 - fMetrics.Top).LineTo(2150 + fMetrics.Width, 1200 - fMetrics.Top), Colour.FromRgb(0, 162, 232), lineWidth: 5);
            gpr.StrokePath(new GraphicsPath().MoveTo(2050, 1200 - fMetrics.Bottom).LineTo(2150 + fMetrics.Width, 1200 - fMetrics.Bottom), Colour.FromRgb(0, 162, 232), lineWidth: 5);

            gpr.StrokePath(new GraphicsPath().MoveTo(2650, 1200 - qMetrics.Top).LineTo(2750 + qMetrics.Width, 1200 - qMetrics.Top), Colour.FromRgb(0, 162, 232), lineWidth: 5);
            gpr.StrokePath(new GraphicsPath().MoveTo(2650, 1200 - qMetrics.Bottom).LineTo(2750 + qMetrics.Width, 1200 - qMetrics.Bottom), Colour.FromRgb(0, 162, 232), lineWidth: 5);

            gpr.StrokePath(new GraphicsPath().MoveTo(2100, 1150 - biggerTimes.Ascent).LineTo(2100, 1250 - biggerTimes.Descent), Colour.FromRgb(63, 72, 204), lineWidth: 5);
            gpr.StrokePath(new GraphicsPath().MoveTo(2100 + fMetrics.Width, 1150 - biggerTimes.Ascent).LineTo(2100 + fMetrics.Width, 1250 - biggerTimes.Descent), Colour.FromRgb(63, 72, 204), lineWidth: 5);

            gpr.StrokePath(new GraphicsPath().MoveTo(2700, 1150 - biggerTimes.Ascent).LineTo(2700, 1250 - biggerTimes.Descent), Colour.FromRgb(63, 72, 204), lineWidth: 5);
            gpr.StrokePath(new GraphicsPath().MoveTo(2700 + qMetrics.Width, 1150 - biggerTimes.Ascent).LineTo(2700 + qMetrics.Width, 1250 - biggerTimes.Descent), Colour.FromRgb(63, 72, 204), lineWidth: 5);

            gpr.StrokePath(new GraphicsPath().MoveTo(2100 - fMetrics.LeftSideBearing, 1150 - biggerTimes.Ascent).LineTo(2100 - fMetrics.LeftSideBearing, 1250 - biggerTimes.Descent), Colour.FromRgb(163, 73, 164), lineWidth: 5);
            gpr.StrokePath(new GraphicsPath().MoveTo(2100 + fMetrics.Width + fMetrics.RightSideBearing, 1150 - biggerTimes.Ascent).LineTo(2100 + fMetrics.Width + fMetrics.RightSideBearing, 1250 - biggerTimes.Descent), Colour.FromRgb(163, 73, 164), lineWidth: 5);

            gpr.StrokePath(new GraphicsPath().MoveTo(2700 - qMetrics.LeftSideBearing, 1150 - biggerTimes.Ascent).LineTo(2700 - qMetrics.LeftSideBearing, 1250 - biggerTimes.Descent), Colour.FromRgb(163, 73, 164), lineWidth: 5);
            gpr.StrokePath(new GraphicsPath().MoveTo(2700 + qMetrics.Width + qMetrics.RightSideBearing, 1150 - biggerTimes.Ascent).LineTo(2700 + qMetrics.Width + qMetrics.RightSideBearing, 1250 - biggerTimes.Descent), Colour.FromRgb(163, 73, 164), lineWidth: 5);

            gpr.FillText(2100, 1200, "f", biggerTimes, Colour.FromRgb(0, 0, 0), textBaseline: TextBaselines.Baseline);
            gpr.FillText(2700, 1200, "q", biggerTimes, Colour.FromRgb(0, 0, 0), textBaseline: TextBaselines.Baseline);


            //Formatted text sample
            IEnumerable<FormattedText> formattedText = FormattedText.Format("This is an <i>example</i><sub>1</sub> of <b>formatted<sup><b>2</b></sup> <i>text</i></b>.", VectSharp.FontFamily.StandardFontFamilies.Helvetica, 70);
            gpr.FillText(1850, 800, formattedText, Colours.Black);

            //A more complex example, using different fonts. You can also associate a different colour to each element.
            List<FormattedText> reaction = new List<FormattedText>()
            {
                new FormattedText("NO", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.TimesRoman), 70)),
                new FormattedText("2", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.TimesRoman), 70), Script.Subscript),
                new FormattedText(" + ", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.TimesRoman), 70)),
                new FormattedText("hν", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.TimesItalic), 70)),
                new FormattedText(" ", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.TimesRoman), 70)),
                new FormattedText("→", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.ZapfDingbats), 70)),
                new FormattedText(" NO + O", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.TimesRoman), 70))
            };
            gpr.FillText(3100, 700, reaction, Colours.Black);

            //Create a new graphics object
            Graphics faceGraphics = new Graphics();

            //Scale
            faceGraphics.Scale(5, 5);

            //Create a new path object
            GraphicsPath face = new GraphicsPath();
            //Figure start point
            face.MoveTo(135.484, 186.221);
            //Cubic Beziers (the start point is the current point; two control points and a destination point are provided)
            face.CubicBezierTo(119.634, 185.011, 96.762, 211.243, 89.044, 228.362);
            face.CubicBezierTo(83.104, 225.903, 76.343, 224.519, 69.141, 224.519);
            face.CubicBezierTo(61.986, 224.519, 55.267, 225.884, 49.302, 228.335);
            face.CubicBezierTo(42.919, 212.558, 18.514, 185.011, 2.664, 186.221);
            face.CubicBezierTo(-2.291, 186.6, 2.727, 212.423, 32.997, 239.883);
            face.CubicBezierTo(27.684, 246.062, 24.576, 253.702, 24.576, 262.033);
            face.CubicBezierTo(24.576, 282.245, 43.032, 296, 69.141, 296);
            face.CubicBezierTo(95.25, 296, 113.705, 282.245, 113.705, 262.033);
            face.CubicBezierTo(113.705, 253.662, 110.567, 245.988, 105.176, 239.757);
            face.CubicBezierTo(135.614, 211.926, 140.439, 186.6, 135.484, 186.221);
            //Close the path
            face.Close();
            //Fill the path
            faceGraphics.FillPath(face, Colour.FromRgb(242, 216, 35));

            //Another path
            GraphicsPath mouth = new GraphicsPath();
            mouth.MoveTo(69.361, 288.088);
            mouth.CubicBezierTo(78.235, 288.088, 81.085, 268.837, 81.085, 268.837);
            mouth.CubicBezierTo(77.594, 269.597, 72.494, 267.158, 69.084, 267.158);
            mouth.CubicBezierTo(66.007, 267.158, 61.554, 269.144, 58.156, 268.97);
            mouth.CubicBezierTo(58.156, 268.97, 60.486, 288.088, 69.361, 288.088);
            mouth.Close();
            faceGraphics.FillPath(mouth, Colour.FromRgb(181, 20, 24));

            //Yet another path
            GraphicsPath tongue = new GraphicsPath();
            tongue.MoveTo(60.305, 278.13);
            tongue.CubicBezierTo(61.968, 283.028, 64.795, 288.088, 69.361, 288.088);
            tongue.CubicBezierTo(73.931, 288.088, 76.896, 282.985, 78.683, 278.074);
            tongue.CubicBezierTo(72.673, 275.222, 66.57, 274.868, 60.305, 278.13);
            tongue.Close();
            faceGraphics.FillPath(tongue, Colour.FromRgb(237, 27, 36));

            //Yet another path
            GraphicsPath leftCheek = new GraphicsPath();
            leftCheek.MoveTo(41.666, 270.34);
            leftCheek.CubicBezierTo(42.67, 275.168, 40.005, 279.806, 35.713, 280.698);
            leftCheek.CubicBezierTo(31.421, 281.591, 27.127, 278.4, 26.124, 273.571);
            leftCheek.CubicBezierTo(25.12, 268.743, 27.785, 264.105, 32.077, 263.213);
            leftCheek.CubicBezierTo(36.369, 262.32, 40.662, 265.511, 41.666, 270.34);
            leftCheek.Close();
            faceGraphics.FillPath(leftCheek, Colour.FromRgb(235, 28, 34));

            //Yet another path
            GraphicsPath rightCheek = new GraphicsPath();
            rightCheek.MoveTo(96.503, 270.34);
            rightCheek.CubicBezierTo(95.499, 275.168, 98.164, 279.806, 102.456, 280.698);
            rightCheek.CubicBezierTo(106.748, 281.591, 111.041, 278.4, 112.045, 273.571);
            rightCheek.CubicBezierTo(113.049, 268.743, 110.384, 264.105, 106.092, 263.213);
            rightCheek.CubicBezierTo(101.8, 262.32, 97.507, 265.511, 96.503, 270.34);
            rightCheek.Close();
            faceGraphics.FillPath(rightCheek, Colour.FromRgb(235, 28, 34));

            //Inline path syntax - mouth
            faceGraphics.StrokePath(new GraphicsPath().MoveTo(84.683, 265.03)
            .CubicBezierTo(82.771, 272.435, 74.1, 267.158, 69.084, 267.158)
            .CubicBezierTo(64.069, 267.158, 55.398, 272.435, 53.486, 265.03)
            .MoveTo(58.182, 268.972)
            .CubicBezierTo(58.182, 268.972, 60.486, 288.088, 69.361, 288.088)
            .CubicBezierTo(78.235, 288.088, 81.059, 268.842, 81.059, 268.842)
            .MoveTo(60.31, 278.145)
            .CubicBezierTo(66.57, 274.868, 72.673, 275.222, 78.669, 278.114),
            Colour.FromRgb(0, 0, 0), lineWidth: 2.5, lineCap: LineCaps.Round);

            //Again, inline path syntax - left ear
            faceGraphics.FillPath(new GraphicsPath().MoveTo(20.118, 192.906).CubicBezierTo(14.005, 188.531, 7.872, 185.824, 2.664, 186.221).CubicBezierTo(-1.235, 186.519, 1.041, 202.568, 16.932, 222.774).CubicBezierTo(15.793, 212.993, 14.194, 202.11, 20.118, 192.906).Close(), Colour.FromRgb(0, 0, 0));
            //Right ear
            faceGraphics.FillPath(new GraphicsPath().MoveTo(120.095, 224.029).CubicBezierTo(137.116, 203.05, 139.479, 186.526, 135.484, 186.221).CubicBezierTo(130.041, 185.806, 123.77, 188.626, 117.569, 193.202).CubicBezierTo(122.356, 200.373, 120.978, 212.396, 120.095, 224.029).Close(), Colour.FromRgb(0, 0, 0));
            //Nose
            faceGraphics.FillPath(new GraphicsPath().MoveTo(71.3, 261.868).CubicBezierTo(71.3, 262.361, 70.308, 262.761, 69.084, 262.761).CubicBezierTo(67.861, 262.761, 66.869, 262.361, 66.869, 261.868).CubicBezierTo(66.869, 261.375, 67.861, 260.975, 69.085, 260.975).CubicBezierTo(70.308, 260.975, 71.3, 261.375, 71.3, 261.868).Close(), Colour.FromRgb(0, 0, 0));

            GraphicsPath leftEye = new GraphicsPath();
            //Circle
            leftEye.Arc(44.875, 252.274, 8.029, 0, 2 * Math.PI);
            faceGraphics.FillPath(leftEye, Colour.FromRgb(0, 0, 0));
            faceGraphics.FillPath(new GraphicsPath().Arc(45.757, 249.371, 3.567, 0, 2 * Math.PI), Colour.FromRgb(255, 255, 255));

            //Right eye
            faceGraphics.FillPath(new GraphicsPath().Arc(93.294, 252.274, 8.029, 0, 2 * Math.PI), Colour.FromRgb(0, 0, 0));
            faceGraphics.FillPath(new GraphicsPath().Arc(92.412, 249.371, 3.567, 0, 2 * Math.PI), Colour.FromRgb(255, 255, 255));

            //Reuse the first path for a stroke           
            faceGraphics.StrokePath(face, Colour.FromRgb(0, 0, 0), lineWidth: 2.5);

            //Use filters to draw a drop shadow
            gpr.DrawGraphics(2015, 1015, faceGraphics, new CompositeLocationInvariantFilter(new GaussianBlurFilter(15), new ColourMatrixFilter(ColourMatrix.ToColour(Colours.Black).WithAlpha(0.5))));

            //Copy the graphics object on the main graphics
            gpr.DrawGraphics(2000, 1000, faceGraphics);



            //Rotation sample

            //Save graphics state (e.g. rotation, translation, scale etc.)
            gpr.Save();

            string[] angles = new string[] { "0", "π/6", "π/3", "π/2", "2π/3", "5π/6", "π", "7π/6", "4π/3", "3π/2", "5π/3", "11π/6" };

            for (int i = 0; i < 12; i++)
            {
                gpr.StrokePath(new GraphicsPath().MoveTo(3400, 1150).LineTo(3550, 1150), Colour.FromRgb(0, 0, 0), lineWidth: 5);
                gpr.FillText(3600, 1150, angles[i], new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.TimesBold), 60), Colour.FromRgb(0, 0, 0), textBaseline: TextBaselines.Middle);

                //Rotate around a point
                gpr.RotateAt(Math.PI / 6, new VectSharp.Point(3400, 1150));
            }

            //Restore graphics state
            gpr.Restore();


            //Transparency sample

            //Checkerboard
            for (int x = 3150; x < 3650; x += 100)
            {
                for (int y = 1825; y < 2475; y += 100)
                {
                    gpr.FillRectangle(x, y, 50, 50, Colour.FromRgb(220, 220, 220));
                    gpr.FillRectangle(x + 50, y + 50, 50, 50, Colour.FromRgb(220, 220, 220));
                }
            }

            //Transparent text
            gpr.FillText(3400 - gpr.MeasureText("Transparent", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.HelveticaBoldOblique), 80)).Width / 2, 1925, "Transparent", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.HelveticaBoldOblique), 80), Colour.FromRgba(255, 127, 39, 85), textBaseline: TextBaselines.Bottom);

            //Transparent stroke
            gpr.StrokePath(new GraphicsPath().MoveTo(3175, 1950).LineTo(3625, 1950), Colour.FromRgba(163, 73, 164, 128), lineWidth: 30);

            //Transparent fill
            gpr.FillPath(new GraphicsPath().Arc(3325, 2300, 150, 0, 2 * Math.PI), Colour.FromRgba((byte)234, (byte)28, (byte)36, (byte)85), tag: "red");
            gpr.FillPath(new GraphicsPath().Arc(3400, 2150, 150, 0, 2 * Math.PI), Colour.FromRgba((byte)34, (byte)177, (byte)76, (byte)85));
            gpr.FillPath(new GraphicsPath().Arc(3475, 2300, 150, 0, 2 * Math.PI), Colour.FromRgba((byte)0, (byte)162, (byte)232, (byte)85));


            //Text fill vs stroke
            gpr.FillText(1925, 1450, "Fill", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.HelveticaBoldOblique), 150), Colour.FromRgb(203, 245, 216));
            gpr.StrokeText(2325, 1450, "Stroke", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.HelveticaBoldOblique), 150), Colour.FromRgb(34, 177, 76), lineWidth: 6, lineJoin: LineJoins.Round);

            //Text can be also added to a graphics path.
            GraphicsPath textPath = new GraphicsPath().AddText(1925, 1650, "Fill & stroke", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.HelveticaBoldOblique), 150));
            gpr.FillPath(textPath, Colour.FromRgb(203, 245, 216));
            gpr.StrokePath(textPath, Colour.FromRgb(34, 177, 76), lineWidth: 6, lineJoin: LineJoins.Round);

            //Embedding raster images
            //First draw what is going to be the raster image
            Page rasterPage = new Page(50, 25);

            Graphics rasterGpr = rasterPage.Graphics;

            rasterGpr.FillRectangle(10, 0, 4, 4, Colour.FromRgb(237, 28, 36));
            rasterGpr.FillRectangle(14, 0, 4, 4, Colour.FromRgb(34, 177, 76));
            rasterGpr.FillRectangle(18, 0, 4, 4, Colour.FromRgb(255, 127, 39));
            rasterGpr.FillRectangle(22, 0, 4, 4, Colour.FromRgb(0, 162, 232));
            rasterGpr.FillRectangle(26, 0, 4, 4, Colour.FromRgb(255, 242, 0));
            rasterGpr.FillRectangle(10, 4, 4, 4, Colour.FromRgb(63, 72, 204));
            rasterGpr.FillRectangle(14, 4, 4, 4, Colour.FromRgb(255, 201, 14));
            rasterGpr.FillRectangle(18, 4, 4, 4, Colour.FromRgb(163, 73, 164));
            rasterGpr.FillRectangle(22, 4, 4, 4, Colour.FromRgb(181, 230, 29));
            rasterGpr.FillRectangle(26, 4, 4, 4, Colour.FromRgb(128, 128, 128));

            rasterGpr.FillText(2, 10, "Raster", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 12), Colours.Black);

            //Save the raster image to a stream in PNG format
            System.IO.MemoryStream rasterStream = new System.IO.MemoryStream();
            rasterPage.SaveAsPNG(rasterStream, 2);

            //Load the raster image from the stream (we load it twice: once with interpolation enabled and once with interpolation disabled).
            //We are also using two different packages: VectSharp.MuPDFUtils and VectSharp.ImageSharpUtils. They provide the same classes, but they
            //use different libraries internally. VectSharp.MuPDFUtils has a native dependency, while VectSharp.ImageSharp utils only uses managed code.
            RasterImage nonInterpolatedRasterImage = new VectSharp.MuPDFUtils.RasterImageStream(rasterStream, MuPDFCore.InputFileTypes.PNG, interpolate: false);
            RasterImage interpolatedRasterImage = new VectSharp.ImageSharpUtils.RasterImageStream(rasterStream, interpolate: true);

            //Create and set clipping path
            GraphicsPath clippingPathLeft = new GraphicsPath().MoveTo(1050, 250).LineTo(1275, 250).LineTo(1325, 300).LineTo(1275, 350).LineTo(1325, 400).LineTo(1275, 450).LineTo(1325, 500).LineTo(1275, 550).LineTo(1050, 550).Close();
            gpr.Save();
            gpr.SetClippingPath(clippingPathLeft);

            //Draw the raster image
            gpr.DrawRasterImage(1100, 300, 500, 250, nonInterpolatedRasterImage);

            //Restore the clipping path
            gpr.Restore();

            //Create and set the new clipping path
            GraphicsPath clippingPathRight = new GraphicsPath().MoveTo(1550, 250).LineTo(1275, 250).LineTo(1325, 300).LineTo(1275, 350).LineTo(1325, 400).LineTo(1275, 450).LineTo(1325, 500).LineTo(1275, 550).LineTo(1550, 550).Close();
            gpr.Save();
            gpr.SetClippingPath(clippingPathRight);

            //Draw the other raster image
            gpr.DrawRasterImage(1100, 300, 500, 250, interpolatedRasterImage);

            //Restore the clipping path
            gpr.Restore();

            //Draw a path on the boundary between the clipping paths
            GraphicsPath clippingPathTear = new GraphicsPath().MoveTo(1325, 200).LineTo(1275, 250).LineTo(1325, 300).LineTo(1275, 350).LineTo(1325, 400).LineTo(1275, 450).LineTo(1325, 500).LineTo(1275, 550).LineTo(1325, 600);
            gpr.StrokePath(clippingPathTear, Colours.Red, 5);


            //Interactivity sample (Avalonia only)
            //Fill rectangle
            gpr.FillRectangle(3100, 1550, 600, 200, Colour.FromRgb(220, 220, 220), tag: "ClickMeRectangle");

            //Stroke rectangle (with dashed line)
            gpr.StrokeRectangle(3100, 1550, 600, 200, Colour.FromRgb(80, 80, 80), lineWidth: 20, lineDash: new LineDash(60, 60, 0));

            //Text with underlined font
            gpr.FillText(3400 - gpr.MeasureText("Click me!", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.HelveticaBold), 80, true)).Width / 2, 1650, "Click me!", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.HelveticaBold), 80, true), Colour.FromRgb(0, 0, 0), textBaseline: TextBaselines.Middle, tag: "ClickMeText");

            //Text along a path
            GraphicsPath flowPath = new GraphicsPath().Arc(1550, 1100, 300, -7 * Math.PI / 8, -Math.PI / 8);
            gpr.StrokePath(flowPath, Colour.FromRgb(220, 220, 220), lineWidth: 10);
            gpr.FillTextOnPath(flowPath, "Text on a path!", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.HelveticaBold), 80), Colour.FromRgb(34, 177, 76), reference: 0.5, anchor: TextAnchors.Center, textBaseline: TextBaselines.Baseline);

            //Dictionary associating each tag to the action to perform on the object (Avalonia only)
            Dictionary<string, Delegate> taggedActions = new Dictionary<string, Delegate>()
             {
                 {"ClickMeText", new Action<Control>(block => { block.IsHitTestVisible = false; }) },
                 {"ClickMeRectangle", new Action<Path>(path =>
                 {
                     path.Cursor = new Avalonia.Input.Cursor(Avalonia.Input.StandardCursorType.Hand);
                     path.PointerEntered += (sender, e) =>
                     {
                         path.Fill = new Avalonia.Media.SolidColorBrush(Avalonia.Media.Color.FromRgb(180, 180, 180));
                     };

                     path.PointerExited += (sender, e) =>
                     {
                         path.Fill = new Avalonia.Media.SolidColorBrush(Avalonia.Media.Color.FromRgb(220, 220, 220));
                     };

                     path.PointerPressed += (sender, e) =>
                     {
                         path.Fill = new Avalonia.Media.SolidColorBrush(Avalonia.Media.Color.FromRgb(128, 128, 128));
                     };

                     path.PointerReleased += async (sender, e) =>
                     {
                         path.Fill = new Avalonia.Media.SolidColorBrush(Avalonia.Media.Color.FromRgb(180, 180, 180));

                         Window win = new Window() { Width = 300, Height = 150, Title = "Thanks for clicking!", WindowStartupLocation = WindowStartupLocation.CenterOwner, Content = new TextBlock(){ Text = "Hello world!", HorizontalAlignment = Avalonia.Layout.HorizontalAlignment.Center, VerticalAlignment = Avalonia.Layout.VerticalAlignment.Center, FontSize = 40 } };
                         await win.ShowDialog(this);
                     };

                 }) },
             };

            //Save the image as a PNG file using VectSharp.Raster
            doc.Pages.Last().SaveAsPNG(@"Sample.png");

            //Save the image as a JPEG file using VectSharp.Raster.ImageSharp - note that the alpha channel will be lost
            doc.Pages.Last().SaveAsImage(@"Sample.jpg");

            //Save the image as an SVG file
            doc.Pages.Last().SaveAsSVG("Sample.svg");

            //Transfer the page onto an Avalonia Canvas object
            this.FindControl<Viewbox>("mainViewBox").Child = doc.Pages.Last().PaintToCanvas(taggedActions);

            //Add another page to the document (the size of each page can be different)
            doc.Pages.Add(new Page(480, 100));

            //Write some text on the second page
            doc.Pages.Last().Graphics.FillText(20, 50, "This is the second page!", new Font(VectSharp.FontFamily.ResolveFontFamily(VectSharp.FontFamily.StandardFontFamilies.Helvetica), 40), Colour.FromRgb(0, 0, 0), textBaseline: TextBaselines.Middle);

            //Create a PDF document
            doc.SaveAsPDF(@"Sample.pdf");
        }

        private void InitializeComponent()
        {
            AvaloniaXamlLoader.Load(this);
        }
    }
}