helper to return HybridConditional as GaussianConditional

gtsam/hybrid/HybridConditional.h

@@ -139,6 +139,17 @@ class GTSAM_EXPORT HybridConditional
     return boost::static_pointer_cast<GaussianMixture>(inner_);
   }
 
+  /**
+   * @brief Return HybridConditional as a GaussianConditional
+   *
+   * @return GaussianConditional::shared_ptr
+   */
+  GaussianConditional::shared_ptr asGaussian() {
+    if (!isContinuous())
+      throw std::invalid_argument("Not a continuous conditional");
+    return boost::static_pointer_cast<GaussianConditional>(inner_);
+  }
+
   /**
    * @brief Return conditional as a DiscreteConditional
    *