use mpl triangulation parser

ultraplot/axes/plot.py

@@ -4408,9 +4408,7 @@ def tricontour(self, *args, **kwargs):
         %(plot.tricontour)s
         """
         kw = kwargs.copy()
-
-        # Parse inputs to get triangulation and z
-        triangulation, z = _parse_tricontourf_inputs(*args, **kwargs)
+        triangulation, z, args, kwargs = inputs._parse_triangulation_inputs(*args, **kwargs)
 
         # Update kwargs and handle cmap
         kw.update(_pop_props(kw, "collection"))
@@ -4440,9 +4438,7 @@ def tricontourf(self, *args, **kwargs):
         %(plot.tricontourf)s
         """
         kw = kwargs.copy()
-
-        # Parse inputs to get triangulation and z
-        triangulation, z = inputs._parse_tricontourf_inputs(*args, **kwargs)
+        triangulation, z, args, kw = inputs._parse_triangulation_inputs(*args, **kwargs)
 
         # Update kwargs and handle contour parameters
         kw.update(_pop_props(kw, "collection"))
@@ -4478,9 +4474,7 @@ def tripcolor(self, *args, **kwargs):
         %(plot.tripcolor)s
         """
         kw = kwargs.copy()
-
-        # Parse inputs to get triangulation and z
-        triangulation, z = _parse_tricontourf_inputs(*args, **kwargs)
+        triangulation, z, args, kw = inputs._parse_triangulation_inputs(*args, **kwargs)
 
         # Update kwargs and handle cmap
         kw.update(_pop_props(kw, "collection"))

ultraplot/internals/inputs.py

@@ -254,39 +254,17 @@ def _from_data(data, *args):
     return args
 
 
-def _parse_tricontourf_inputs(*args, **kwargs):
+def _parse_triangulation_inputs(*args, **kwargs):
     """
-    Parse inputs for the tricontourf function and return triangulation and z values.
-    Supports the following input patterns:
-      1. (triangulation, z)
-      2. (x, y, z)
-      3. (x, y, triangulation, z)
+    Parse inputs using Matplotlib's `get_from_args_and_kwargs` method.
+    Returns a Triangulation object, z values, and updated args/kwargs.
     """
     from matplotlib.tri import Triangulation
-
-    if len(args) == 2:
-        # (triangulation, z)
-        triangulation, z = args
-        if not isinstance(triangulation, Triangulation):
-            raise TypeError(
-                "First argument must be a Triangulation object when two arguments are provided."
-            )
-    elif len(args) == 3:
-        # (x, y, z)
-        x, y, z = args
-        triangulation = Triangulation(x, y, mask=kwargs.get("mask"))
-    elif len(args) == 4:
-        x, y, triangulation, z = args
-        if not isinstance(triangulation, Triangulation):
-            raise TypeError(
-                "Third argument must be a Triangulation object when four arguments are provided."
-            )
-    else:
-        raise ValueError(
-            "Invalid inputs. Provide (triangulation, z), (x, y, z), or (x, y, triangulation, z)."
-        )
-
-    return triangulation, z
+    triangulation, args, kwargs = Triangulation.get_from_args_and_kwargs(*args, **kwargs)
+    if not args:
+        raise ValueError("No z values provided. Provide at least one positional argument for z.")
+    z = args[0]  # Assume the first remaining argument is z
+    return triangulation, z, args[1:], kwargs
 
 
 def _preprocess_or_redirect(*keys, keywords=None, allow_extra=True):