Add curve support

api/static/curve.py

@@ -0,0 +1,54 @@
+from typing import List
+import enum
+
+class HandleType(enum.Enum):
+    AUTO = 'AUTO'
+    VECTOR = 'VECTOR'
+    AUTO_CLAMPED = 'AUTO_CLAMPED'
+
+class Point:
+    """
+    A single point on a curve
+    """
+
+    x: float
+    y: float
+    handle_type: HandleType
+
+    def __init__(self, x: float, y: float, handle_type: HandleType = HandleType.AUTO):
+        self.x = x
+        self.y = y
+        self.handle_type = handle_type
+
+class Curve:
+    """
+    A class that represents a curve.
+
+    Create a curve from a set of `Point`s.
+    ```python
+    my_curve = Curve(
+        Point(0, 0, Handle.AUTO_CLAMPED),
+        Point(0.2, 0.3, Handle.AUTO),
+        Point(1, 1, Handle.VECTOR)
+    )
+    ```
+    """
+
+    points: List[Point]
+
+    def __init__(self, *points: Point):
+        if len(points) == 1 and isinstance(points[0], list):
+            self.points = points[0]
+        else:
+            self.points = list(points)
+
+    def apply(self, curve):
+        """
+        Apply the points to a curve object.
+        """
+        for i, point in enumerate(self.points):
+            if len(curve.points) > i:
+                curve.points[i].location = (point.x, point.y)
+                curve.points[i].handle_type = point.handle_type.value
+            else:
+                curve.points.new(point.x, point.y).handle_type = point.handle_type.value