Rectangle<T extends num> constructor Null safety
- T left,
- T top,
- T width,
- T height
Create a rectangle spanned by (left, top) and
(left+width, top+height).
The rectangle contains the points
with x-coordinate between left and left + width, and
with y-coordinate between top and top + height, both inclusive.
The width and height should be non-negative.
If width or height are negative, they are clamped to zero.
If width and height are zero, the "rectangle" comprises only the
single point (left, top).
Implementation
const Rectangle(this.left, this.top, T width, T height)
: width = (width < 0)
? (-width * 0) as dynamic
: width, // Inline _clampToZero<num>.
height = (height < 0) ? (-height * 0) as dynamic : height;