blob: 912f652e30ba0de5c5bee52ba265a18844f9e28e [file] [log] [blame]
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
part of $LIBRARYNAME;
$(ANNOTATIONS)$(NATIVESPEC)$(CLASS_MODIFIERS)class $CLASSNAME$EXTENDS implements Rectangle$IMPLEMENTS {
// NOTE! All code below should be common with RectangleBase.
String toString() {
return 'Rectangle ($left, $top) $width x $height';
}
bool operator ==(other) {
if (other is !Rectangle) return false;
return left == other.left && top == other.top && width == other.width &&
height == other.height;
}
int get hashCode => _JenkinsSmiHash.hash4(left.hashCode, top.hashCode,
width.hashCode, height.hashCode);
/**
* Computes the intersection of `this` and [other].
*
* The intersection of two axis-aligned rectangles, if any, is always another
* axis-aligned rectangle.
*
* Returns the intersection of this and `other`, or null if they don't
* intersect.
*/
Rectangle intersection(Rectangle other) {
var x0 = max(left, other.left);
var x1 = min(left + width, other.left + other.width);
if (x0 <= x1) {
var y0 = max(top, other.top);
var y1 = min(top + height, other.top + other.height);
if (y0 <= y1) {
return new Rectangle(x0, y0, x1 - x0, y1 - y0);
}
}
return null;
}
/**
* Returns true if `this` intersects [other].
*/
bool intersects(Rectangle<num> other) {
return (left <= other.left + other.width &&
other.left <= left + width &&
top <= other.top + other.height &&
other.top <= top + height);
}
/**
* Returns a new rectangle which completely contains `this` and [other].
*/
Rectangle boundingBox(Rectangle other) {
var right = max(this.left + this.width, other.left + other.width);
var bottom = max(this.top + this.height, other.top + other.height);
var left = min(this.left, other.left);
var top = min(this.top, other.top);
return new Rectangle(left, top, right - left, bottom - top);
}
/**
* Tests whether `this` entirely contains [another].
*/
bool containsRectangle(Rectangle<num> another) {
return left <= another.left &&
left + width >= another.left + another.width &&
top <= another.top &&
top + height >= another.top + another.height;
}
/**
* Tests whether [another] is inside or along the edges of `this`.
*/
bool containsPoint(Point<num> another) {
return another.x >= left &&
another.x <= left + width &&
another.y >= top &&
another.y <= top + height;
}
Point get topLeft => new Point(this.left, this.top);
Point get topRight => new Point(this.left + this.width, this.top);
Point get bottomRight => new Point(this.left + this.width,
this.top + this.height);
Point get bottomLeft => new Point(this.left,
this.top + this.height);
$!MEMBERS}