Sets this instance equal to the intersection of the base envelope and the input envelope. The XMin and YMin of the resulting envelope builder is the maximum XMin and YMin respectively between the base and input envelopes, and the XMax and YMax is the minimum XMax and YMax respectively between the base and input Envelopes. If the resulting XMin > XMax, or YMin > YMax, then the envelope is Empty (and all XMin, XMax, YMin, and YMax are NaN.).
// use the convenience builders
Envelope env1 = EnvelopeBuilderEx.CreateEnvelope(0, 0, 1, 1, SpatialReferences.WGS84);
Envelope env2 = EnvelopeBuilderEx.CreateEnvelope(0.5, 0.5, 1.5, 1.5, SpatialReferences.WGS84);
bool intersects = env1.Intersects(env2); // true
Envelope env3 = env1.Intersection(env2);
// or use the builderEx constructors which don't need to run on the MCT.
EnvelopeBuilderEx builderEx = new EnvelopeBuilderEx(0, 0, 1, 1, SpatialReferences.WGS84);
intersects = builderEx.Intersects(env2);
builderEx.Intersection(env2); // note this sets the builder to the intersection
env3 = builderEx.ToGeometry() as Envelope;