void axRenderControl1_RcMouseClickSelect(IPickResult PickResult, IPoint IntersectPoint, gviModKeyMask Mask, gviMouseSelectMode EventSender)
{
//获取水源点
waterPoint = IntersectPoint;
//设置参数
this.numWaterHStart.Value = (decimal)IntersectPoint.Z;
this.numWaterHEnd.Value = (decimal)(IntersectPoint.Z + 30);
//获取缓冲区bufPolygon\renderBufPolygon
radius = (double)numBufferRadius.Value;
ITopologicalOperator2D to = waterPoint as ITopologicalOperator2D;
bufPolygon = to.Buffer2D(radius, gviBufferStyle.gviBufferCapround) as IPolygon;
ISurfaceSymbol sf = new SurfaceSymbol();
sf.Color = System.Drawing.Color.Yellow;
ICurveSymbol cs = new CurveSymbol();
cs.Color = System.Drawing.Color.Yellow;
sf.BoundarySymbol = cs;
renderBufPolygon = this.axRenderControl1.ObjectManager.CreateRenderPolygon(bufPolygon, sf, rootId);
renderBufPolygon.HeightStyle = gviHeightStyle.gviHeightOnTerrain;
this.axRenderControl1.InteractMode = gviInteractMode.gviInteractNormal;
this.axRenderControl1.RcMouseClickSelect -= new _IRenderControlEvents_RcMouseClickSelectEventHandler(axRenderControl1_RcMouseClickSelect);
this.btnOnProcess.Enabled = true;
this.btnSimulate.Enabled = true;
}
/// <summary>
/// 获取缓冲多边形
/// </summary>
/// <param name="distance">缓冲半径</param>
/// <returns>缓冲多边形</returns>
private IPolygon GetBufferPolygon(double distance)
{
IPoint startPoint = _StartRenderPoint.GetFdeGeometry() as IPoint;
if (startPoint == null)
{
return(null);
}
IPoint drawSource = startPoint.Clone2(gviVertexAttribute.gviVertexAttributeZ) as IPoint;
ITopologicalOperator2D drawTopo = drawSource as ITopologicalOperator2D;
IPolygon bufferPolygon = drawTopo.Buffer2D(distance, gviBufferStyle.gviBufferCapround) as IPolygon;
return(bufferPolygon);
}
/// <summary>
/// 获取缓冲多边形
/// </summary>
/// <param name="distance">缓冲半径</param>
/// <returns>缓冲多边形</returns>
private IPolygon GetBufferPolygon(double distance)
{
IPolyline startLine = renderPolyline.GetFdeGeometry() as IPolyline;
if (startLine == null)
{
return(null);
}
IPolyline drawSource = startLine.Clone2(gviVertexAttribute.gviVertexAttributeZ) as IPolyline;
//如果是球面需投影到平面再做缓冲区计算
if (currentCRS.CrsType == gviCoordinateReferenceSystemType.gviCrsGeographic)
{
drawSource.Project(projectCRS);
}
ITopologicalOperator2D drawBufferLine = drawSource as ITopologicalOperator2D;
IPolygon bufferPolygon = drawBufferLine.Buffer2D(distance, gviBufferStyle.gviBufferCapbutt) as IPolygon;
bufferPolygon.SpatialCRS = drawSource.SpatialCRS;
if (currentCRS.CrsType == gviCoordinateReferenceSystemType.gviCrsGeographic)
{
bufferPolygon.Project(currentCRS);
}
polygon = bufferPolygon;
IPolygon ppolygon = bufferPolygon.Clone2(gviVertexAttribute.gviVertexAttributeZ) as IPolygon; //设置三维坐标
//不被地面遮挡
for (int j = 0; j < ppolygon.ExteriorRing.PointCount; j++)
{
IPoint p = ppolygon.ExteriorRing.GetPoint(j);
p.Z = 1;
ppolygon.ExteriorRing.UpdatePoint(j, p);
}
return(ppolygon);
}