private bool SnapAll(IPoint pPoint, IAppContext appContext, double torelance, out IPoint snapPoint)
{
IMap focusMap = appContext.FocusMap;
snapPoint = null;
bool result;
if (!appContext.Config.UseSnap)
{
result = false;
}
else
{
if (appContext.Config.IsSnapSketch)
{
IHitTest hitTest = SketchToolAssist.m_pPointColn as IHitTest;
if (hitTest != null)
{
double num = 0.0;
int num2 = 0;
int num3 = 0;
bool flag = false;
IPoint point = new Point();
if (hitTest.HitTest(pPoint, torelance, esriGeometryHitPartType.esriGeometryPartVertex, point,
ref num, ref num2, ref num3, ref flag))
{
snapPoint = point;
string toolTip = "草图:折点";
ApplicationRef.Application.SetToolTip(toolTip);
result = true;
return(result);
}
}
}
IEnumLayer enumLayer = focusMap.get_Layers(new UID
{
Value = "{6CA416B1-E160-11D2-9F4E-00C04F6BC78E}"
}, true);
enumLayer.Reset();
enumLayer.Next();
IFeatureCache2 featureCache = new FeatureCache() as IFeatureCache2;
featureCache.Initialize(pPoint, torelance);
try
{
featureCache.AddLayers(enumLayer, (appContext.MapControl.ActiveView as IActiveView).Extent);
}
catch
{
}
if (featureCache.Count == 0)
{
result = false;
}
else
{
if (appContext.Config.IsSnapPoint)
{
snapPoint = this.SnapPoint(pPoint, featureCache, torelance);
if (snapPoint != null)
{
result = true;
return(result);
}
}
if (appContext.Config.IsSnapIntersectionPoint)
{
snapPoint = this.SnapIntersectPoint(pPoint, featureCache, torelance);
if (snapPoint != null)
{
result = true;
return(result);
}
}
if (appContext.Config.IsSnapEndPoint)
{
snapPoint = this.SnapEndPoint(pPoint, featureCache, torelance);
if (snapPoint != null)
{
result = true;
return(result);
}
}
if (appContext.Config.IsSnapVertexPoint)
{
snapPoint = this.SnapVertexPoint(pPoint, featureCache, torelance);
if (snapPoint != null)
{
result = true;
return(result);
}
}
if (appContext.Config.IsSnapMiddlePoint)
{
snapPoint = this.SnapMiddlePoint(pPoint, featureCache, torelance);
if (snapPoint != null)
{
result = true;
return(result);
}
}
if (appContext.Config.IsSnapBoundary)
{
snapPoint = this.SnapBoundary(pPoint, featureCache, torelance);
if (snapPoint != null)
{
result = true;
return(result);
}
}
result = false;
}
}
return(result);
}
