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lib/common/num.dart

@@ -1,5 +1,43 @@
-extension NumExtension on num {
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+
+extension NumExt on num {
   String fixed({digit = 2}) {
     return toStringAsFixed(truncateToDouble() == this ? 0 : digit);
   }
 }
+
+extension DoubleExt on double {
+  moreOrEqual(double value) {
+    return this > value || (value - this).abs() < precisionErrorTolerance + 1;
+  }
+}
+
+extension OffsetExt on Offset {
+  double getCrossAxisOffset(Axis direction) {
+    return direction == Axis.vertical ? dx : dy;
+  }
+
+  double getMainAxisOffset(Axis direction) {
+    return direction == Axis.vertical ? dy : dx;
+  }
+
+  bool less(Offset offset) {
+    if (dy < offset.dy) {
+      return true;
+    }
+    if (dy == offset.dy && dx < offset.dx) {
+      return true;
+    }
+    return false;
+  }
+}
+
+extension RectExt on Rect {
+  doRectIntersect(Rect rect) {
+    return left < rect.right &&
+        right > rect.left &&
+        top < rect.bottom &&
+        bottom > rect.top;
+  }
+}