使用Autodesk.AutoCAD.GraphicsSystem.View类，文档却没有反应，怎么回事。例如：
Autodesk.AutoCAD.GraphicsSystem.View zoom = new Autodesk.AutoCAD.GraphicsSystem.View();<br/> zoom.Zoom(2);<br/>没反应。<br/> GraphicsSystem->图形接口，使用不是这样简单的你只是新建一个View对象还不够，必须把它和当前视图联系起来
View可以用来Zoom，但操作无法回退
看过手册里的例子么？
建议你先按下心来仔细看下资料
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.Geometry;
static void Zoom(Point3d pMin, Point3d pMax, Point3d pCenter, double dFactor)
{
// Get the current document and database
Document acDoc = Application.DocumentManager.MdiActiveDocument;
Database acCurDb = acDoc.Database;
int nCurVport = System.Convert.ToInt32(Application.GetSystemVariable("CVPORT"));
// Get the extents of the current space no points
// or only a center point is provided
// Check to see if Model space is current
if (acCurDb.TileMode == true)
{
if (pMin.Equals(new Point3d()) == true &&
pMax.Equals(new Point3d()) == true)
{
pMin = acCurDb.Extmin;
pMax = acCurDb.Extmax;
}
}
else
{
// Check to see if Paper space is current
if (nCurVport == 1)
{
// Get the extents of Paper space
if (pMin.Equals(new Point3d()) == true &&
pMax.Equals(new Point3d()) == true)
{
pMin = acCurDb.Pextmin;
pMax = acCurDb.Pextmax;
}
}
else
{
// Get the extents of Model space
if (pMin.Equals(new Point3d()) == true &&
pMax.Equals(new Point3d()) == true)
{
pMin = acCurDb.Extmin;
pMax = acCurDb.Extmax;
}
}
}
// Start a transaction
using (Transaction acTrans = acCurDb.TransactionManager.StartTransaction())
{
// Get the current view
using (ViewTableRecord acView = acDoc.Editor.GetCurrentView())
{
Extents3d eExtents;
// Translate WCS coordinates to DCS
Matrix3d matWCS2DCS;
matWCS2DCS = Matrix3d.PlaneToWorld(acView.ViewDirection);
matWCS2DCS = Matrix3d.Displacement(acView.Target - Point3d.Origin) * matWCS2DCS;
matWCS2DCS = Matrix3d.Rotation(-acView.ViewTwist,
acView.ViewDirection,
acView.Target) * matWCS2DCS;
// If a center point is specified, define the min and max
// point of the extents
// for Center and Scale modes
if (pCenter.DistanceTo(Point3d.Origin) != 0)
{
pMin = new Point3d(pCenter.X - (acView.Width / 2),
pCenter.Y - (acView.Height / 2), 0);
pMax = new Point3d((acView.Width / 2) + pCenter.X,
(acView.Height / 2) + pCenter.Y, 0);
}
// Create an extents object using a line
using (Line acLine = new Line(pMin, pMax))
{
eExtents = new Extents3d(acLine.Bounds.Value.MinPoint,
acLine.Bounds.Value.MaxPoint);
}
// Calculate the ratio between the width and height of the current view
double dViewRatio;
dViewRatio = (acView.Width / acView.Height);
// Tranform the extents of the view
matWCS2DCS = matWCS2DCS.Inverse();
eExtents.TransformBy(matWCS2DCS);
double dWidth;
double dHeight;
Point2d pNewCentPt;
// Check to see if a center point was provided (Center and Scale modes)
if (pCenter.DistanceTo(Point3d.Origin) != 0)
{
dWidth = acView.Width;
dHeight = acView.Height;
if (dFactor == 0)
{
pCenter = pCenter.TransformBy(matWCS2DCS);
}
pNewCentPt = new Point2d(pCenter.X, pCenter.Y);
}
else // Working in Window, Extents and Limits mode
{
// Calculate the new width and height of the current view
dWidth = eExtents.MaxPoint.X - eExtents.MinPoint.X;
dHeight = eExtents.MaxPoint.Y - eExtents.MinPoint.Y;
// Get the center of the view
pNewCentPt = new Point2d(((eExtents.MaxPoint.X + eExtents.MinPoint.X) * 0.5),
((eExtents.MaxPoint.Y + eExtents.MinPoint.Y) * 0.5));
}
// Check to see if the new width fits in current window
if (dWidth > (dHeight * dViewRatio)) dHeight = dWidth / dViewRatio;
// Resize and scale the view
if (dFactor != 0)
{
acView.Height = dHeight * dFactor;
acView.Width = dWidth * dFactor;
}
// Set the center of the view
acView.CenterPoint = pNewCentPt;
// Set the current view
acDoc.Editor.SetCurrentView(acView);
}
// Commit the changes
acTrans.Commit();
}
}
页:
[1]