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Add Rect.fromCircle

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As requested.
This commit is contained in:
Adam Barth 2016-03-01 10:46:25 -08:00
parent 0b6fd31fc3
commit 6bf2152a6b
1 changed files with 9 additions and 0 deletions
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9
sky/engine/core/painting/Rect.dart
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@ -27,6 +27,15 @@ class Rect {
..[3] = top + height;
}
/// Construct a rectangle that bounds the given circle.
Rect.fromCircle({ Point center, double radius }) {
_value
..[0] = center.x - radius
..[1] = center.y - radius
..[2] = center.x + radius
..[3] = center.y + radius;
}
static const int _kDataSize = 4;
final Float32List _value = new Float32List(_kDataSize);