svg fraction correction exercice

backend/tools/validate_svg_quality.py

@@ -133,6 +133,18 @@ def overlaps(a: Box, b: Box) -> bool:
     return a.x1 < b.x2 and a.x2 > b.x1 and a.y1 < b.y2 and a.y2 > b.y1
 
 
+def horizontal_overlap(a: Box, b: Box) -> bool:
+    return a.x1 < b.x2 and a.x2 > b.x1
+
+
+def vertical_gap(a: Box, b: Box) -> float:
+    if a.y2 <= b.y1:
+        return b.y1 - a.y2
+    if b.y2 <= a.y1:
+        return a.y1 - b.y2
+    return 0.0
+
+
 def parse_data_box(node: ET.Element, ox: float, oy: float) -> Box | None:
     match = DATA_BOX_RE.match(node.attrib.get("data-box") or "")
     if not match:
@@ -233,6 +245,16 @@ def validate_layout_collisions(path: Path, root: ET.Element, styles: dict[str, d
                         f"Chevauchement autour d'une fraction: {first.kind} {first.label!r} avec {second.kind} {second.label!r}.",
                     )
                 )
+            elif first.kind == "fraction" and second.kind == "fraction" and horizontal_overlap(first, second):
+                gap = vertical_gap(first, second)
+                if gap < 12:
+                    issues.append(
+                        Issue(
+                            "error",
+                            path,
+                            f"Marge verticale insuffisante entre fractions: {first.label!r} et {second.label!r} ({gap:.1f}px).",
+                        )
+                    )
     return issues