PDF Mosaic: How to create gray color space in PDF and draw graphics elements - Two Pilots

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This sample shows how to create gray color space and then create and use a color with that color space.

C# :

using PDFMosaic;
using System.Drawing;
using System;
 
namespace GrayColorSpace
{
    class GrayColorSpace
    {
        static void Main()
        {
            PDFDocument document = new PDFDocument();
            document.Pages.Add(new PDFPage(PDFPaperFormat.A4));
            PDFCanvas canvas = document.Pages[0].Canvas;
 
            Random rnd = new Random();
 
            for(int i = 0; i < 5; ++i)
            {
                PDFColorGray colorGray = new PDFColorGray((byte)rnd.Next(255));
                PDFSolidBrush brushGray = new PDFSolidBrush(colorGray);
 
                canvas.DrawEllipse(brushGray, 10 + 20*i, 10 + 20*i, 70, 100);
            }
 
            document.Save(“GrayColorSpace.pdf”, true);
        }
    }
}

Visial Basic.NET :

Imports PDFMosaic
Imports System.Drawing
Imports System
 
Module ColorProfiles
    Sub Main()
        Dim document As PDFDocument = New PDFDocument()
        document.Pages.Add(New PDFPage(PDFPaperFormat.A4))
        Dim canvas As PDFCanvas = document.Pages(0).Canvas
 
        Dim rnd As New Random()
 
        Dim i As Integer
        For i = 0 To 4
        Dim colorGray As PDFColorGray = New PDFColorGray(rnd.Next(255))
        Dim brushGray As PDFSolidBrush = New PDFSolidBrush(colorGray)
 
        canvas.DrawEllipse(brushGray, 10 + i*20, 100 + i*20, 70, 100)
        Next i
 
        document.Save("ColorProfiles.pdf", True)
    End Sub
End Module

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