Mengekspor gambar dan tata letak DWG/DXF ke ukuran tertentu

Ekspor Model dan semua tata letak ke ukuran PDF A4

API Aspose.CAD memungkinkan Anda untuk mengekspor semua lembar dari file DWG/DXF ke ukuran PDF fisik yang ditentukan.

Kode contoh berikut mengatur ukuran objek CadRasterizationOptions untuk mencapai ukuran PDF yang diinginkan. Ukuran lembar kertas A4 adalah 210x297 milimeter atau 8,27x11,69 inci dan nilai-nilai ini digunakan dalam kode.

bool currentUnitIsMetric = false; 
double currentUnitCoefficient = 1.0; 
DefineUnitSystem(cadImage.UnitType, out currentUnitIsMetric, out currentUnitCoefficient);

if (currentUnitIsMetric) 
{ 
double metersCoeff = 1 / 1000.0;
double scaleFactor = metersCoeff / currentUnitCoefficient;
rasterizationOptions.PageWidth = (float)(210 * scaleFactor);
rasterizationOptions.PageHeight = (float)(297 * scaleFactor);
rasterizationOptions.UnitType = UnitType.Millimeter;
} 
else 
{ 
rasterizationOptions.PageWidth = (float)(8.27f / currentUnitCoefficient); 
rasterizationOptions.PageHeight = (float)(11.69f / currentUnitCoefficient); 
rasterizationOptions.UnitType = UnitType.Inch; 
}

private static void DefineUnitSystem(UnitType unitType, out bool isMetric, out double coefficient) 
{
isMetric = false; 
coefficient = 1.0;

switch (unitType)
{
	case UnitType.Parsec:
		coefficient = 3.0857 * 10000000000000000.0;
		isMetric = true;
		break;
	case UnitType.LightYear:
		coefficient = 9.4607 * 1000000000000000.0;
		isMetric = true;
		break;
	case UnitType.AstronomicalUnit:
		coefficient = 1.4960 * 100000000000.0;
		isMetric = true;
		break;
	case UnitType.Gigameter:
		coefficient = 1000000000.0;
		isMetric = true;
		break;
	case UnitType.Kilometer:
		coefficient = 1000.0;
		isMetric = true;
		break;
	case UnitType.Decameter:
		isMetric = true;
		coefficient = 10.0;
		break;
	case UnitType.Hectometer:
		isMetric = true;
		coefficient = 100.0;
		break;
	case UnitType.Meter:
		isMetric = true;
		coefficient = 1.0;
		break;
	case UnitType.Centimenter:
		isMetric = true;
		coefficient = 0.01;
		break;
	case UnitType.Decimeter:
		isMetric = true;
		coefficient = 0.1;
		break;
	case UnitType.Millimeter:
		isMetric = true;
		coefficient = 0.001;
		break;
	case UnitType.Micrometer:
		isMetric = true;
		coefficient = 0.000001;
		break;
	case UnitType.Nanometer:
		isMetric = true;
		coefficient = 0.000000001;
		break;
	case UnitType.Angstrom:
		isMetric = true;
		coefficient = 0.0000000001;
		break;
	case UnitType.Inch:
		coefficient = 1.0;
		break;
	case UnitType.MicroInch:
		coefficient = 0.000001;
		break;
	case UnitType.Mil:
		coefficient = 0.001;
		break;
	case UnitType.Foot:
		coefficient = 12.0;
		break;
	case UnitType.Yard:
		coefficient = 36.0;
		break;
	case UnitType.Mile:
		coefficient = 63360.0;
		break;
}
}

Ekspor Tata Letak CAD ke PDF dalam ukuran yang berbeda

Terkadang diperlukan untuk mengekspor tata letak ke ukuran fisiknya. Contoh di bawah ini menunjukkan ekspor gambar ke PDF multipage di mana setiap halaman dengan konten tata letak memiliki ukuran PDF fisik masing-masing. Contoh ini menggunakan properti LayoutPageSizes.

using (CadImage cadImage = (CadImage)Image.Load(fileName))
{
	CadRasterizationOptions rasterizationOptions = new CadRasterizationOptions();

	foreach (CadLayout layout in cadImage.Layouts.Values)
	{
		if (layout.LayoutName == "Model") continue;

		SizeF pageSize = GetPageSizeFromLayout(layout);
		rasterizationOptions.LayoutPageSizes.Add(layout.LayoutName, pageSize);
	}

	PdfOptions pdfOptions = new PdfOptions();
	pdfOptions.VectorRasterizationOptions = rasterizationOptions;
	cadImage.Save(outPath, pdfOptions);
}
			
private static SizeF GetPageSizeFromLayout(CadLayout layout)
{
	var isLandscape = IsLayoutLandscape(layout);

	float pageWidth;
	float pageHeight;

	if (layout.PlotPaperUnits == CadPlotPaperUnits.PlotInInches)
	{
		pageWidth = (float)MillimetersToInches(layout.PlotPaperSize.Width);
		pageHeight = (float)MillimetersToInches(layout.PlotPaperSize.Height);
	}
	else
	{
		pageWidth = (float)layout.PlotPaperSize.Width;
		pageHeight = (float)layout.PlotPaperSize.Height;
	}

	if (isLandscape)
	{
		return new SizeF(pageHeight, pageWidth);
	}
	else
	{
		return new SizeF(pageWidth, pageHeight);
	}
}

private static bool IsLayoutLandscape(CadLayout layout)
{
	return layout.PlotRotation == CadPlotRotation.Clockwise90Degrees || layout.PlotRotation == CadPlotRotation.Counterclockwise90Degrees;
}

private static double MillimetersToInches(double millimeters)
{
	const double MillimetersToInchesFactor = 0.0393701;
	return millimeters * MillimetersToInchesFactor;
}