//清除所有可视域分析
private void btn_Clear_Click(object sender, EventArgs e)
{
this.RegisterEvents(false);
int nCount = m_viewshed3DList.Count();
int i = 0;
for (i = 0; i < nCount; i++)
{
Viewshed3D viewShed = m_viewshed3DList[i];
viewShed.Clear();
}
m_viewshed3DList.Clear();
if (m_viewshed3D != null)
{
m_viewshed3D = null;
}
m_sceneControl.Action = Action3D.Pan;
this.btn_Analyst.Enabled = true;
this.btn_StopAnalysis.Enabled = false;
this.btn_Clear.Enabled = false;
}
void m_sceneControl_Tracking(object sender, Tracking3DEventArgs e)
{
if (m_sceneControl.Action == Action3D.CreateLine)
{
if (m_bHasDone)
{
m_viewshed3D = CreateViewShed3D();
m_bHasDone = false;
}
if (m_viewshed3D != null)
{
GeoLine3D geoline3d = e.Geometry as GeoLine3D;
if (geoline3d.PartCount > 0)
{
Point3Ds pts = geoline3d[0];
m_viewshed3D.ViewerPosition = pts[0];
updateObserverPosition(m_viewshed3D);
m_viewshed3D.SetDistDirByPoint(pts[1]);
updateParam(m_viewshed3D, false);
}
}
}
}
private Viewshed3D CreateViewShed3D()
{
//新建ViewShed对象
Viewshed3D viewShed = new Viewshed3D(m_sceneControl.Scene);
this.updateParam(viewShed, true);
if (m_colorScheme == ColorScheme.Standand)
{
viewShed.VisibleAreaColor = Color.Green;
viewShed.HiddenAreaColor = Color.Red;
}
else if (m_colorScheme == ColorScheme.Custom)
{
viewShed.VisibleAreaColor = Color.Yellow;
viewShed.HiddenAreaColor = Color.Blue;
}
else if (m_colorScheme == ColorScheme.Random)
{
Random rand = new Random();
viewShed.VisibleAreaColor = Color.FromArgb(rand.Next(255), rand.Next(255), rand.Next(255));
viewShed.HiddenAreaColor = Color.FromArgb(rand.Next(255), rand.Next(255), rand.Next(255));
}
viewShed.HintLineColor = m_hintLineColor;
m_viewshed3DList.Add(viewShed);
viewShed.Build();
return(viewShed);
}
/// <summary>
/// 数据更新， bFlag = false时，用ViewShed对象的属性值更新界面参数
/// bFlag = true时，用界面参数值更新ViewShed对象的属性值
/// </summary>
/// <param name="viewshed3D"></param>
/// <param name="bFlag"></param>
void updateParam(Viewshed3D viewshed3D, bool bFlag)
{
if (bFlag == false)
{
this.numeric_Distance.Value = Convert.ToDecimal(viewshed3D.Distance);
this.numeric_Direction.Value = Convert.ToDecimal(viewshed3D.Direction);
this.numeric_HorizontalFOV.Value = Convert.ToDecimal(viewshed3D.HorizontalFov);
this.numeric_VerticalFOV.Value = Convert.ToDecimal(viewshed3D.VerticalFov);
this.numeric_Pitch.Value = Convert.ToDecimal(viewshed3D.Pitch);
}
else
{
viewshed3D.Distance = Convert.ToDouble(this.numeric_Distance.Value);
viewshed3D.Direction = Convert.ToDouble(this.numeric_Direction.Value);
viewshed3D.HorizontalFov = Convert.ToDouble(this.numeric_HorizontalFOV.Value);
viewshed3D.VerticalFov = Convert.ToDouble(this.numeric_VerticalFOV.Value);
viewshed3D.Pitch = Convert.ToDouble(this.numeric_Pitch.Value);
}
}
//窗体关闭事件
private void DlgViewShedAnalysis_FormClosing(object sender, FormClosingEventArgs e)
{
this.RegisterEvents(false);
int nCount = m_viewshed3DList.Count();
int i = 0;
for (i = 0; i < nCount; i++)
{
Viewshed3D viewShed = m_viewshed3DList[i];
viewShed.Clear();
}
m_viewshed3DList.Clear();
if (m_viewshed3D != null)
{
m_viewshed3D = null;
}
m_sceneControl.Action = Action3D.Pan;
}
//更新观察点坐标
void updateObserverPosition(Viewshed3D viewshed)
{
this.tb_ObserverX.Text = Convert.ToString(viewshed.ViewerPosition.X);
this.tb_ObserverY.Text = Convert.ToString(viewshed.ViewerPosition.Y);
this.tb_ObserverHeight.Text = Convert.ToString(viewshed.ViewerPosition.Z);
}