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plotter-app/venv/lib/python3.8/site-packages/contourpy/util/renderer.py

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+from __future__ import annotations
+
+from abc import ABC, abstractmethod
+from typing import TYPE_CHECKING, Any
+
+import numpy as np
+
+if TYPE_CHECKING:
+    import io
+
+    from numpy.typing import ArrayLike
+
+    from contourpy._contourpy import CoordinateArray, FillReturn, FillType, LineReturn, LineType
+
+
+class Renderer(ABC):
+    """Abstract base class for renderers, defining the interface that they must implement."""
+
+    def _grid_as_2d(self, x: ArrayLike, y: ArrayLike) -> tuple[CoordinateArray, CoordinateArray]:
+        x = np.asarray(x)
+        y = np.asarray(y)
+        if x.ndim == 1:
+            x, y = np.meshgrid(x, y)
+        return x, y
+
+        x = np.asarray(x)
+        y = np.asarray(y)
+        if x.ndim == 1:
+            x, y = np.meshgrid(x, y)
+        return x, y
+
+    @abstractmethod
+    def filled(
+        self,
+        filled: FillReturn,
+        fill_type: FillType,
+        ax: Any = 0,
+        color: str = "C0",
+        alpha: float = 0.7,
+    ) -> None:
+        pass
+
+    @abstractmethod
+    def grid(
+        self,
+        x: ArrayLike,
+        y: ArrayLike,
+        ax: Any = 0,
+        color: str = "black",
+        alpha: float = 0.1,
+        point_color: str | None = None,
+        quad_as_tri_alpha: float = 0,
+    ) -> None:
+        pass
+
+    @abstractmethod
+    def lines(
+        self,
+        lines: LineReturn,
+        line_type: LineType,
+        ax: Any = 0,
+        color: str = "C0",
+        alpha: float = 1.0,
+        linewidth: float = 1,
+    ) -> None:
+        pass
+
+    @abstractmethod
+    def mask(
+        self,
+        x: ArrayLike,
+        y: ArrayLike,
+        z: ArrayLike | np.ma.MaskedArray[Any, Any],
+        ax: Any = 0,
+        color: str = "black",
+    ) -> None:
+        pass
+
+    @abstractmethod
+    def save(self, filename: str, transparent: bool = False) -> None:
+        pass
+
+    @abstractmethod
+    def save_to_buffer(self) -> io.BytesIO:
+        pass
+
+    @abstractmethod
+    def show(self) -> None:
+        pass
+
+    @abstractmethod
+    def title(self, title: str, ax: Any = 0, color: str | None = None) -> None:
+        pass
+
+    @abstractmethod
+    def z_values(
+        self,
+        x: ArrayLike,
+        y: ArrayLike,
+        z: ArrayLike,
+        ax: Any = 0,
+        color: str = "green",
+        fmt: str = ".1f",
+        quad_as_tri: bool = False,
+    ) -> None:
+        pass