Експорт частини зображення
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]Як експортати частину зображення
Проблема: Як експортувати частину зображення (CADNET-504).
Поради: Для цього ви можете використовувати метод RenderPartOfImage, який знаходить активний вигляд і замінює його.
Приклад:
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private static void RenderPartOfImage(PointF topLeft, double tileWidth, double tileHeight, string outputFileName) | |
{ | |
CadVportTableObject newView = new CadVportTableObject(); | |
System.Console.WriteLine("Top left = " + topLeft.X + " " + topLeft.Y + " width= " + tileWidth + " height= " + tileHeight); | |
// note: exactly such table name is required for active view | |
newView.Name = "*Active"; | |
newView.CenterPoint.X = topLeft.X + (tileWidth / 2); | |
newView.CenterPoint.Y = topLeft.Y - (tileHeight / 2); | |
newView.ViewHeight.Value = tileHeight; | |
newView.ViewAspectRatio.Value = tileWidth / tileHeight; | |
// search for active viewport and replace it | |
for (int i = 0; i < cadImage.ViewPorts.Count; i++) | |
{ | |
CadVportTableObject currentView = (CadVportTableObject)(cadImage.ViewPorts[i]); | |
if ((currentView.TableName == null && cadImage.ViewPorts.Count == 1) || | |
string.Equals(currentView.TableName.ToLowerInvariant(), "*active")) | |
{ | |
cadImage.ViewPorts[i] = newView; | |
break; | |
} | |
} | |
PngOptions pngOptions = GetSaveOptions(true); | |
pngOptions.VectorRasterizationOptions.PageHeight = (float)tileHeight * 100f; | |
pngOptions.VectorRasterizationOptions.PageWidth = (float)tileWidth * 100f; | |
cadImage.Save(outputFileName, pngOptions); | |
} |