Rectify

Dart extension methods to make the Rect class pleasant and convenient to work with.

Method	Description
adjust	Adjust by dx1, dy1, dx2 and dy2.
intersects	Whether two rectangles intersect.
moveBottom	Moves along the bottom edge.
moveBottomLeft	Moves along the bottom left corner.
moveBottomRight	Moves along the bottom right corner.
moveCenter	Moves along the center.
moveLeft	Moves along the left edge.
moveRight	Moves along the right edge.
moveTop	Moves along the top edge.
moveTopLeft	Moves along the top left corner.
moveTopRight	Moves along the top right corner.
normalize	Ensures non-negative width and height.
setBottom	Sets the bottom edge.
setBottomLeft	Sets the bottom left corner.
setBottomRight	Sets the bottom right corner.
setHeight	Sets the height.
setLeft	Sets the left edge.
setRight	Sets the right edge.
setTop	Sets the top edge.
setTopLeft	Sets the top left corner.
setTopRight	Sets the top right corner.
setWidth	Sets the width.
normalize	Exchanges width and height.
unite	Bounding rectangle of two rectangles.

All above methods are extension methods and work on any object of type Rect.

Usage

To use this package, add rectify as a dependency in your pubspec.yaml file

import 'package:rectify/rectify.dart';

void main() {
  const ltrb1234 = Rect.fromLTRB(1, 2, 3, 4);
  const ltrb2345 = Rect.fromLTRB(2, 3, 4, 5);
  const ltrb5678 = Rect.fromLTRB(5, 6, 7, 8);
  const ltwh1234 = Rect.fromLTWH(1, 2, 3, 4);

  // adjust
  print(ltrb1234.adjust(1, 2, 3, 4)); // Rect.fromLTRB(2, 4, 6, 8)

  // intersection
  print(ltrb1234.intersects(ltrb2345)); // true
  print(ltrb1234.intersects(ltrb5678)); // false

  // move edge
  print(ltrb1234.moveLeft(5)); // Rect.fromLTRB(5, 2, 7, 4)
  print(ltrb1234.moveTop(5)); // Rect.fromLTRB(1, 5, 3, 7)
  print(ltrb1234.moveRight(5)); // Rect.fromLTRB(3, 2, 5, 4)
  print(ltrb1234.moveBottom(5)); // Rect.fromLTRB(1, 3, 3, 5)

  // move corner
  print(ltrb1234.moveTopLeft(Offset(5, 6))); // Rect.fromLTRB(5, 6, 7, 8)
  print(ltrb1234.moveTopRight(Offset(5, 6))); // Rect.fromLTRB(3, 6, 5, 8)
  print(ltrb1234.moveBottomLeft(Offset(5, 6))); // Rect.fromLTRB(5, 4, 7, 6)
  print(ltrb1234.moveBottomRight(Offset(5, 6))); // Rect.fromLTRB(3, 4, 5, 6)

  // move center
  print(ltrb1234.moveCenter(Offset(5, 6))); // Rect.fromLTRB(4, 5, 6, 7)

  // normalize
  print(Rect.fromLTWH(1, 2, -3, -4).normalize()); // Rect.fromLTWH(1, 2, 3, 4)

  // set edge
  print(ltrb1234.setBottom(5)); // Rect.fromLTRB(1, 2, 3, 5)
  print(ltrb1234.setLeft(5)); // Rect.fromLTRB(5, 2, 3, 4)
  print(ltrb1234.setRight(5)); // Rect.fromLTRB(1, 2, 5, 4)
  print(ltrb1234.setTop(5)); // Rect.fromLTRB(1, 5, 3, 4)

  // set corner
  print(ltrb1234.setTopLeft(Offset(5, 6))); // Rect.fromLTRB(5, 6, 3, 4)
  print(ltrb1234.setTopRight(Offset(5, 6))); // Rect.fromLTRB(1, 6, 5, 4)
  print(ltrb1234.setBottomLeft(Offset(5, 6))); // Rect.fromLTRB(5, 2, 3, 6)
  print(ltrb1234.setBottomRight(Offset(5, 6))); // Rect.fromLTRB(1, 2, 5, 6)

  // size
  print(ltwh1234.setSize(Size(5, 6))); // Rect.fromLTWH(1, 2, 5, 6))
  print(ltwh1234.setWidth(5)); // Rect.fromLTWH(1, 2, 5, 4))
  print(ltwh1234.setHeight(5)); // Rect.fromLTWH(1, 2, 3, 5))

  // transpose
  print(ltwh1234.transpose()); //Rect.fromLTWH(1, 2, 4, 3))

  // unite
  print(ltrb1234.unite(ltrb5678)); // Rect.fromLTRB(1, 2, 7, 8)
}