private static string ConvertToString(DxfFile dxf, PdfMeasurement?pageWidth = null, PdfMeasurement?pageHeight = null, double scale = 1.0)
{
var options = new DxfToPdfConverterOptions(
pageWidth ?? PdfMeasurement.Inches(8.5),
pageHeight ?? PdfMeasurement.Inches(11.0),
scale);
return(ConvertToString(dxf, options));
}
private static string ConvertToString(DxfFile dxf, DxfToPdfConverterOptions options)
{
var converter = new DxfToPdfConverter();
var pdf = converter.Convert(dxf, options);
using (var ms = new MemoryStream())
{
pdf.Save(ms);
ms.Seek(0, SeekOrigin.Begin);
var sb = new StringBuilder();
int b;
while ((b = ms.ReadByte()) >= 0)
{
sb.Append((char)b);
}
return(sb.ToString());
}
}
public override async Task Plot(Drawing drawing, ViewPort viewPort, Stream outputStream, Func <string, Task <byte[]> > contentResolver)
{
var converter = new DxfToPdfConverter();
var fileSettings = new DxfFileSettings()
{
FileVersion = DxfFileVersion.R2004,
};
var dxfFile = DxfFileHandler.ToDxfFile(drawing, viewPort, fileSettings);
var pageWidth = new PdfMeasurement(ViewModel.DisplayWidth, ViewModel.DisplayUnit);
var pageHeight = new PdfMeasurement(ViewModel.DisplayHeight, ViewModel.DisplayUnit);
var plotViewPort = ViewModel.ViewPort;
var viewPortWidth = ViewModel.DisplayWidth / ViewModel.DisplayHeight * plotViewPort.ViewHeight;
var dxfRect = new ConverterDxfRect(plotViewPort.BottomLeft.X, plotViewPort.BottomLeft.X + viewPortWidth, plotViewPort.BottomLeft.Y, plotViewPort.BottomLeft.Y + plotViewPort.ViewHeight);
var pdfRect = new ConverterPdfRect(
new PdfMeasurement(0.0, ViewModel.DisplayUnit),
new PdfMeasurement(ViewModel.DisplayWidth, ViewModel.DisplayUnit),
new PdfMeasurement(0.0, ViewModel.DisplayUnit),
new PdfMeasurement(ViewModel.DisplayHeight, ViewModel.DisplayUnit));
var options = new DxfToPdfConverterOptions(pageWidth, pageHeight, dxfRect, pdfRect, contentResolver: contentResolver);
var pdfFile = await converter.Convert(dxfFile, options);
pdfFile.Save(outputStream);
}
public void SourceDestinationTransformTest()
{
var dxf = new DxfFile();
// line from (2,2) to (3,3)
dxf.Entities.Add(new DxfLine(new DxfPoint(2, 2, 0), new DxfPoint(3, 3, 0)));
var options = new DxfToPdfConverterOptions(PdfMeasurement.Mm(210), PdfMeasurement.Mm(297),
new ConverterDxfRect(2, 3, 2, 3),
new ConverterPdfRect(PdfMeasurement.Points(100), PdfMeasurement.Points(200), PdfMeasurement.Points(300), PdfMeasurement.Points(400)));
var pdf = ConvertToString(dxf, options);
// expected line from (100,300)pt to (200,400)pt
var expected = NormalizeCrLf(@"
stream
0 w
0 0 0 RG
0 0 0 rg
100.00 300.00 m
200.00 400.00 l
S
endstream".Trim());
Assert.Contains(expected, pdf);
}
