Esportazione di disegni e layout DWG/DXF in dimensioni specifiche
Esporta modello e tutti i layout in formato PDF A4
L’API Aspose.CAD consente di esportare tutti i fogli del file DWG/DXF in un formato PDF fisico specificato.
Il seguente esempio di codice imposta la dimensione dell’oggetto CadRasterizationOptions per ottenere la dimensione PDF desiderata.
La dimensione di un foglio di carta A4 è 210x297 millimetri o 8.27x11.69 pollici e questi valori vengono utilizzati nel codice.
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; | |
} | |
} |
Esporta layout CAD in PDF in dimensioni diverse
A volte è necessario esportare il layout nelle sue dimensioni fisiche. L’esempio seguente dimostra l’esportazione del disegno in un PDF multipagina in cui ogni pagina con contenuto del layout ha la propria dimensione PDF fisica. Questo esempio utilizza la proprietà 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; | |
} |