{
using (Teigha.GraphicsSystem.View pView = helperDevice.ActiveView)
{
Point3d wcsPt = new Point3d(x, y, 0.0);
wcsPt = wcsPt.TransformBy((pView.ScreenMatrix * pView.ProjectionMatrix).Inverse());
wcsPt = new Point3d(wcsPt.X, wcsPt.Y, 0.0);
using (AbstractViewPE pVpPE = new AbstractViewPE(pView))
{
return wcsPt.TransformBy(pVpPE.EyeToWorld);
}
}
} 怎么实现,图纸的缩放和上下平移,还有删除线段
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