internal static Matrix3d Dcs2Wcs(AbstractViewTableRecord v)
{
return
(Matrix3d.Rotation(-v.ViewTwist, v.ViewDirection, v.Target) *
Matrix3d.Displacement(v.Target - Point3d.Origin) *
Matrix3d.PlaneToWorld(v.ViewDirection));
}
/// <summary>
/// Returns the transformation matrix from the ViewportTableRecord DCS to WCS.
/// </summary>
/// <remarks>Borrowed from http://www.acadnetwork.com/index.php?topic=232.msg406#msg406</remarks>
/// <param name="view">The ViewportTableRecord instance this method applies to.</param>
/// <returns>The DCS to WCS transformation matrix.</returns>
public static Matrix3d EyeToWorld(this AbstractViewTableRecord view)
{
return
(Matrix3d.Rotation(-view.ViewTwist, view.ViewDirection, view.Target) *
Matrix3d.Displacement(view.Target - Point3d.Origin) *
Matrix3d.PlaneToWorld(view.ViewDirection));
}
/// <summary>
/// 获取WCS到DCS的转换矩阵
/// </summary>
/// <param name="vtr">视图（ViewTableRecord）或视口（ViewportTableRecord）</param>
/// <returns></returns>
public static Matrix3d Wcs2Dcs(this AbstractViewTableRecord vtr)
{
//获取视图或视口平面到世界坐标系转换矩阵
Matrix3d mat = Matrix3d.PlaneToWorld(vtr.ViewDirection);
//将平移过的视口或视图回复到原始状态所需要的矩阵
mat = Matrix3d.Displacement(vtr.Target - Point3d.Origin) * mat;
//将旋转过的视口或视图回复到原始状态所需要的矩阵
mat = Matrix3d.Rotation(-vtr.ViewTwist, vtr.ViewDirection, vtr.Target) * mat;
return(mat.Inverse());//将矩阵进行转置
}
Stream(ArrayList data, AbstractViewTableRecord rec)
{
data.Add(new Snoop.Data.ClassSeparator(typeof(AbstractViewTableRecord)));
data.Add(new Snoop.Data.Point2d("Center point", rec.CenterPoint));
data.Add(new Snoop.Data.Distance("Width", rec.Width));
data.Add(new Snoop.Data.Distance("Height", rec.Height));
data.Add(new Snoop.Data.Point3d("Target", rec.Target));
data.Add(new Snoop.Data.Vector3d("View direction", rec.ViewDirection));
data.Add(new Snoop.Data.Distance("View twist", rec.ViewTwist));
data.Add(new Snoop.Data.Double("Lens length", rec.LensLength));
data.Add(new Snoop.Data.Bool("Front clip at eye", rec.FrontClipAtEye));
data.Add(new Snoop.Data.Distance("Front clip distance", rec.FrontClipDistance));
data.Add(new Snoop.Data.Distance("Back clip distance", rec.BackClipDistance));
data.Add(new Snoop.Data.Bool("Front clip enabled", rec.FrontClipEnabled));
data.Add(new Snoop.Data.Bool("Back clip enabled", rec.BackClipEnabled));
data.Add(new Snoop.Data.Distance("Elevation", rec.Elevation));
data.Add(new Snoop.Data.Bool("Perspective enabled", rec.PerspectiveEnabled));
// data.Add(new Snoop.Data.String("Render mode", rec.RenderMode.ToString()));
data.Add(new Snoop.Data.Object("UCS", rec.Ucs));
data.Add(new Snoop.Data.ObjectId("UCS name", rec.UcsName));
data.Add(new Snoop.Data.String("UCS orthographic", rec.UcsOrthographic.ToString()));
data.Add(new Snoop.Data.String("View orthographic", rec.ViewOrthographic.ToString()));
data.Add(new Snoop.Data.Object("Ambient light color", rec.AmbientLightColor));
data.Add(new Snoop.Data.ObjectId("Background ID", rec.Background));
data.Add(new Snoop.Data.Double("Brightness", rec.Brightness));
data.Add(new Snoop.Data.Double("Contrast", rec.Contrast));
data.Add(new Snoop.Data.Bool("Default lighting on", rec.DefaultLightingOn));
data.Add(new Snoop.Data.String("Default lighting type", rec.DefaultLightingType.ToString()));
data.Add(new Snoop.Data.ObjectId("Sun ID", rec.SunId));
data.Add(new Snoop.Data.ObjectId("Visual style ID", rec.VisualStyleId));
ViewportTableRecord viewportRec = rec as ViewportTableRecord;
if (viewportRec != null)
{
Stream(data, viewportRec);
return;
}
ViewTableRecord viewRec = rec as ViewTableRecord;
if (viewRec != null)
{
Stream(data, viewRec);
return;
}
}
public static void SetView(Point3d ptMin, Point3d ptMax, double scale)
{
Editor editor = Application.DocumentManager.MdiActiveDocument.Editor;
ViewTableRecord currentView = editor.GetCurrentView();
currentView.Height = Math.Abs(ptMax.Y - ptMin.Y) * scale;
currentView.Width = Math.Abs(ptMax.X - ptMin.X) * scale;
AbstractViewTableRecord abstractViewTableRecord = currentView;
Point2d centerPoint;
centerPoint..ctor((ptMax.X + ptMin.X) / 2.0, (ptMax.Y + ptMin.Y) / 2.0);
abstractViewTableRecord.CenterPoint = centerPoint;
editor.SetCurrentView(currentView);
Application.UpdateScreen();
}
internal static Extents3d ScreenExtents(
AbstractViewTableRecord vtr
)
{
// Get the centre of the screen in WCS and use it
// with the diagonal vector to add the corners to the
// extents object
var ext = new Extents3d();
var vec = new Vector3d(0.5 * vtr.Width, 0.5 * vtr.Height, 0);
var ctr =
new Point3d(vtr.CenterPoint.X, vtr.CenterPoint.Y, 0);
var dcs = Utils.Dcs2Wcs(vtr);
ext.AddPoint((ctr + vec).TransformBy(dcs));
ext.AddPoint((ctr - vec).TransformBy(dcs));
return(ext);
}
/// <summary>
/// Returns the transformation matrix from the ViewportTableRecord WCS to DCS.
/// </summary>
/// <remarks>Borrowed from http://www.acadnetwork.com/index.php?topic=232.msg406#msg406</remarks>
/// <param name="view">The ViewportTableRecord instance this method applies to.</param>
/// <returns>The WCS to DCS transformation matrix.</returns>
public static Matrix3d WorldToEye(this AbstractViewTableRecord view)
{
return(view.EyeToWorld().Inverse());
}
Stream(ArrayList data, AcDb.SymbolTableRecord tblRec)
{
data.Add(new Snoop.Data.ClassSeparator(typeof(AcDb.SymbolTableRecord)));
data.Add(new Snoop.Data.String("Name", tblRec.Name));
data.Add(new Snoop.Data.Bool("Is dependent", tblRec.IsDependent));
data.Add(new Snoop.Data.Bool("Is resolved", tblRec.IsResolved));
// branch to all known major sub-classes
AbstractViewTableRecord viewRec = tblRec as AbstractViewTableRecord;
if (viewRec != null)
{
Stream(data, viewRec);
return;
}
BlockTableRecord blkRec = tblRec as BlockTableRecord;
if (blkRec != null)
{
Stream(data, blkRec);
return;
}
DimStyleTableRecord dimRec = tblRec as DimStyleTableRecord;
if (dimRec != null)
{
Stream(data, dimRec);
return;
}
LayerTableRecord layRec = tblRec as LayerTableRecord;
if (layRec != null)
{
Stream(data, layRec);
return;
}
LinetypeTableRecord ltypeRec = tblRec as LinetypeTableRecord;
if (ltypeRec != null)
{
Stream(data, ltypeRec);
return;
}
TextStyleTableRecord textRec = tblRec as TextStyleTableRecord;
if (textRec != null)
{
Stream(data, textRec);
return;
}
UcsTableRecord ucsRec = tblRec as UcsTableRecord;
if (ucsRec != null)
{
Stream(data, ucsRec);
return;
}
}
