From 66b84b019fe760a2cb9901a9f17b2d202d935ba4 Mon Sep 17 00:00:00 2001
From: Théo de la Hogue
Date: Wed, 27 Sep 2023 18:03:57 +0200
Subject: Allowing to load ellipse from SVG file.

---
 src/argaze/AreaOfInterest/AOI2DScene.py  | 15 +++++++++++++++
 src/argaze/AreaOfInterest/AOIFeatures.py | 11 +++++++++++
 2 files changed, 26 insertions(+)

(limited to 'src')

diff --git a/src/argaze/AreaOfInterest/AOI2DScene.py b/src/argaze/AreaOfInterest/AOI2DScene.py
index f8599c5..062044f 100644
--- a/src/argaze/AreaOfInterest/AOI2DScene.py
+++ b/src/argaze/AreaOfInterest/AOI2DScene.py
@@ -91,6 +91,21 @@ class AOI2DScene(AOIFeatures.AOIScene):
 
 				new_areas[circle.getAttribute('id')] = AOIFeatures.AreaOfInterest.from_dict(circle_dict)
 
+			# Load SVG ellipse
+			for ellipse in description_file.getElementsByTagName('ellipse'):
+
+				# Convert ellipse element into dict
+				ellipse_dict = {
+					"Ellipse": {
+						'cx': float(circle.getAttribute('cx')),
+						'cy': float(circle.getAttribute('cy')),
+						'rx': float(circle.getAttribute('rx')),
+						'ry': float(circle.getAttribute('ry'))
+					}
+				}
+
+				new_areas[ellipse.getAttribute('id')] = AOIFeatures.AreaOfInterest.from_dict(ellipse_dict)
+
 			return AOI2DScene(new_areas)
 
 	def draw(self, image: numpy.array, draw_aoi: dict = None, exclude=[]):
diff --git a/src/argaze/AreaOfInterest/AOIFeatures.py b/src/argaze/AreaOfInterest/AOIFeatures.py
index dfbb165..2d5b9b1 100644
--- a/src/argaze/AreaOfInterest/AOIFeatures.py
+++ b/src/argaze/AreaOfInterest/AOIFeatures.py
@@ -78,6 +78,17 @@ class AreaOfInterest(numpy.ndarray):
 
             return AreaOfInterest(points)
 
+        elif shape == 'Ellipse':
+
+            cx = shape_data.pop('cx')
+            cy = shape_data.pop('cy')
+            rx = shape_data.pop('rx')
+            ry = shape_data.pop('ry')
+
+            # TODO: Use pygeos
+            N = 32
+            points = [(math.cos(2*math.pi / N*x) * rx + cx, math.sin(2*math.pi / N*x) * ry + cy) for x in range(0, N+1)]
+
     @property
     def dimension(self) -> int:
         """Number of axis coding area points positions."""
-- 
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