Расширить общие API графиков и GAS обмена

python/protocan/plot.py

@@ -37,7 +37,7 @@ class PlotMath:
         self.library = library
         library.set_plot_abi_version.restype = ctypes.c_uint32
         library.set_plot_abi_version.argtypes = []
-        if library.set_plot_abi_version() != 1:
+        if library.set_plot_abi_version() != 2:
             raise RuntimeError("Unsupported plot ABI")
         library.set_plot_eval.argtypes = [ctypes.c_uint32, ctypes.POINTER(ctypes.c_double),
             ctypes.c_size_t, ctypes.POINTER(ctypes.c_double), ctypes.c_size_t]
@@ -67,6 +67,10 @@ class PlotMath:
         except ValueError:
             return None
 
+    def limits(self, left: float, right: float, bottom: float, top: float) -> "Bounds":
+        """Validate absolute axis limits in the shared core."""
+        return Bounds(*self.call(8, left, right, bottom, top))
+
 
 @dataclass(frozen=True)
 class Viewport:
@@ -92,6 +96,9 @@ class Bounds:
     bottom: float
     top: float
 
+    def validated(self, core: PlotMath) -> "Bounds":
+        return core.limits(self.left, self.right, self.bottom, self.top)
+
     def fraction(self, core: PlotMath, value: float, horizontal: bool) -> float:
         return core.call(2, value, self.bottom if horizontal else self.left,
             self.top if horizontal else self.right, int(horizontal))[0]