// Helper functions to zoom using different techniques
// Zoom using a view object
private static void ZoomWin(
_AcEd.Editor ed, _AcGe.Point3d min, _AcGe.Point3d max
)
{
_AcGe.Point2d min2d = new _AcGe.Point2d(min.X, min.Y);
_AcGe.Point2d max2d = new _AcGe.Point2d(max.X, max.Y);
_AcDb.ViewTableRecord view =
new _AcDb.ViewTableRecord();
view.CenterPoint =
min2d + ((max2d - min2d) / 2.0);
view.Height = max2d.Y - min2d.Y;
view.Width = max2d.X - min2d.X;
ed.SetCurrentView(view);
}
public static void Zoom(AcGe.Point3d pMin, AcGe.Point3d pMax, AcGe.Point3d pCenter, double dFactor)
{
int nCurVport = System.Convert.ToInt32(AcApp.GetSystemVariable("CVPORT"));
if (db.TileMode == true)
{
if (pMin.Equals(new AcGe.Point3d()) == true &&
pMax.Equals(new AcGe.Point3d()) == true)
{
pMin = db.Extmin;
pMax = db.Extmax;
}
}
else
{
// Check to see if Paper space is current
if (nCurVport == 1)
{
// Get the extents of Paper space
if (pMin.Equals(new AcGe.Point3d()) == true &&
pMax.Equals(new AcGe.Point3d()) == true)
{
pMin = db.Pextmin;
pMax = db.Pextmax;
}
}
else
{
// Get the extents of Model space
if (pMin.Equals(new AcGe.Point3d()) == true &&
pMax.Equals(new AcGe.Point3d()) == true)
{
pMin = db.Extmin;
pMax = db.Extmax;
}
}
}
using (AcDb.Transaction acTrans = db.TransactionManager.StartTransaction())
{
using (AcDb.ViewTableRecord acView = ed.GetCurrentView())
{
AcDb.Extents3d eExtents;
AcGe.Matrix3d matWCS2DCS;
matWCS2DCS = AcGe.Matrix3d.PlaneToWorld(acView.ViewDirection);
matWCS2DCS = AcGe.Matrix3d.Displacement(acView.Target - AcGe.Point3d.Origin) * matWCS2DCS;
matWCS2DCS = AcGe.Matrix3d.Rotation(-acView.ViewTwist,
acView.ViewDirection,
acView.Target) * matWCS2DCS;
if (pCenter.DistanceTo(AcGe.Point3d.Origin) != 0)
{
pMin = new AcGe.Point3d(pCenter.X - (acView.Width / 2),
pCenter.Y - (acView.Height / 2), 0);
pMax = new AcGe.Point3d((acView.Width / 2) + pCenter.X,
(acView.Height / 2) + pCenter.Y, 0);
}
using (AcDb.Line acLine = new AcDb.Line(pMin, pMax))
{
eExtents = new AcDb.Extents3d(acLine.Bounds.Value.MinPoint,
acLine.Bounds.Value.MaxPoint);
}
double dViewRatio;
dViewRatio = (acView.Width / acView.Height);
matWCS2DCS = matWCS2DCS.Inverse();
eExtents.TransformBy(matWCS2DCS);
double dWidth;
double dHeight;
AcGe.Point2d pNewCentPt;
if (pCenter.DistanceTo(AcGe.Point3d.Origin) != 0)
{
dWidth = acView.Width;
dHeight = acView.Height;
if (dFactor == 0)
{
pCenter = pCenter.TransformBy(matWCS2DCS);
}
pNewCentPt = new AcGe.Point2d(pCenter.X, pCenter.Y);
}
else
{
dWidth = eExtents.MaxPoint.X - eExtents.MinPoint.X;
dHeight = eExtents.MaxPoint.Y - eExtents.MinPoint.Y;
pNewCentPt = new AcGe.Point2d(((eExtents.MaxPoint.X + eExtents.MinPoint.X) * 0.5),
((eExtents.MaxPoint.Y + eExtents.MinPoint.Y) * 0.5));
}
if (dWidth > (dHeight * dViewRatio))
{
dHeight = dWidth / dViewRatio;
}
if (dFactor != 0)
{
acView.Height = dHeight * dFactor;
acView.Width = dWidth * dFactor;
}
acView.CenterPoint = pNewCentPt;
ed.SetCurrentView(acView);
}
acTrans.Commit();
}
}
