Add and clean proper objects for Polyline, Point2D, Circle

networks/geometry/Circle.py

@@ -0,0 +1,68 @@
+from typing import Type
+import Point2D
+
+
+class Circle:
+    def __init__(center: Type[Point2D], inner: int, outer: int):
+        self.center = center
+        self.inner = inner
+        self.outer = outer
+        self.coordinates = []
+
+        circle(self.center, self.inner, self.outer)
+
+    def circle(center: Type[Point2D], inner: int, outer: int):
+        """Compute discrete value of a 2d-circle with thickness. 
+
+        https://stackoverflow.com/questions/27755514/circle-with-thickness-drawing-algorithm
+
+        Args:
+            center (Type[Point2D]): Center of the circle. Circles always have an odd diameter due to the central coordinate.
+            inner (int): The minimum radius at which the disc is filled (included).
+            outer (int): The maximum radius where disc filling stops (included).
+        """
+        xo = outer
+        xi = inner
+        y = 0
+        erro = 1 - xo
+        erri = 1 - xi
+
+        while xo >= y:
+            _x_line(center.x + xi, center.x + xo, center.y + y)
+            _y_line(center.x + y,  center.y + xi, center.y + xo)
+            _x_line(center.x - xo, center.x - xi, center.y + y)
+            _y_line(center.x - y,  center.y + xi, center.y + xo)
+            _x_line(center.x - xo, center.x - xi, center.y - y)
+            _y_line(center.x - y,  center.y - xo, center.y - xi)
+            _x_line(center.x + xi, center.x + xo, center.y - y)
+            _y_line(center.x + y,  center.y - xo, center.y - xi)
+
+            y += 1
+
+            if erro < 0:
+                erro += 2 * y + 1
+            else:
+                xo -= 1
+                erro += 2 * (y - xo + 1)
+
+            if y > inner:
+                xi = y
+            else:
+                if erri < 0:
+                    erri += 2 * y + 1
+                else:
+                    xi -= 1
+                    erri += 2 * (y - xi + 1)
+
+    def _x_line(x1, x2, y):
+        while x1 <= x2:
+            self.coordinates.append(Point2D(x1, y))
+            x1 += 1
+
+    def _y_line(x, y1, y2):
+        while y1 <= y2:
+            self.coordinate.append(Point2D(x, y1))
+            y1 += 1
+
+    def __repr__(self):
+        return f"Circle(center: {self.center}, inner: {self.inner}, outer: {self.outer})"