public void AddItem(Drawable item)
{
if (IsDesigner)
{
return;
}
Init();
Extents3d?itemExtents = item.Bounds;
if (itemExtents.HasValue)
{
if (items.Count == 0)
{
extents.Set(itemExtents.Value.MinPoint, itemExtents.Value.MaxPoint);
}
else
{
extents.AddExtents(itemExtents.Value);
}
}
items.Add(item);
Refresh();
}
/// <summary>
/// Method to zoom a viewport to the extents of an input entity
/// </summary>
/// <param name="acCurDb"></param>
/// <param name="acCurVp"></param>
/// <param name="acEnt"></param>
private void ZoomViewport(Database acCurDb, Viewport acCurVp, Extents3d ext)
{
// get the screen aspect ratio to calculate
// the height and width
// width/height
var mScrRatio = acCurVp.Width / acCurVp.Height;
var mMaxExt = acCurDb.Extmax;
var mMinExt = acCurDb.Extmin;
if (ext != null)
{
mMaxExt = ext.MaxPoint;
mMinExt = ext.MinPoint;
}
var mExtents = new Extents3d();
mExtents.Set(mMinExt, mMaxExt);
// prepare Matrix for DCS to WCS transformation
var matWcs2Dcs = Matrix3d.PlaneToWorld(acCurVp.ViewDirection);
matWcs2Dcs = Matrix3d.Displacement(acCurVp.ViewTarget - Point3d.Origin) * matWcs2Dcs;
matWcs2Dcs = Matrix3d.Rotation(-acCurVp.TwistAngle, acCurVp.ViewDirection, acCurVp.ViewTarget) * matWcs2Dcs;
matWcs2Dcs = matWcs2Dcs.Inverse();
// tranform the extents to the DCS
// defined by the viewdir
mExtents.TransformBy(matWcs2Dcs);
// width of the extents in current view
var mWidth = mExtents.MaxPoint.X - mExtents.MinPoint.X;
// height of the extents in current view
var mHeight = mExtents.MaxPoint.Y - mExtents.MinPoint.Y;
// get the view center point
var mCentPt = new Point2d(
(mExtents.MaxPoint.X + mExtents.MinPoint.X) * 0.5,
(mExtents.MaxPoint.Y + mExtents.MinPoint.Y) * 0.5);
// check if the width 'fits' in current window,
// if not then get the new height as
// per the viewports aspect ratio
if (mWidth > mHeight * mScrRatio)
{
mHeight = mWidth / mScrRatio;
}
// set the view height - adjusted by view Identifier
acCurVp.ViewHeight = mHeight * 1.25;
// set the view center
acCurVp.ViewCenter = mCentPt;
}
private void readSurferGridData(string path)
{
// 读数据
double yfirst = 0; //记录第一个读出来的y坐标，如果发生变化，说明第一行数据读取完毕
List <double> databuf = new List <double>();
StreamReader sr = new StreamReader(path);
int index = 0;
while (!sr.EndOfStream)
{
string strRead = sr.ReadLine();
if (strRead != "")
{
string[] strs = strRead.Split(' ');
databuf.Add(double.Parse(strs[2]));
// 记录图幅范围,并统计行数
if (index == 0)
{
yfirst = double.Parse(strs[1]);
Point3d pt = new Point3d(double.Parse(strs[0]), double.Parse(strs[1]), 0);
m_extents.Set(pt, pt);
}
if (sr.EndOfStream)
{
m_extents.AddPoint(new Point3d(double.Parse(strs[0]), double.Parse(strs[1]), 0));
}
// y值发生变化，记录下列数
if (double.Parse(strs[1]) != yfirst && m_XSize == 0)
{
m_XSize = index;
}
}
index++;
}
m_YSize = databuf.Count / m_XSize;
m_elevations = databuf.ToArray();
sr.Close();
}