#IRect

IRect is the integer-pixel variant of Rect: an Int32Array of [left, top, right, bottom]. Used by APIs that operate on whole pixels, mostly readPixels / writePixels and Canvas.getDeviceClipBounds.

Build with CK.LTRBiRect(l, t, r, b) or CK.XYWHiRect(x, y, w, h).

const region = CK.LTRBiRect(60, 50, 360, 200);

const paint = new CK.Paint();
paint.setColor(CK.Color(40, 90, 180, 0.5));
paint.setAntiAlias(true);

canvas.clear(CK.WHITE);
// drawRect accepts both Rect and IRect — though for vector drawing you'd
// normally use Rect. IRect mostly shines on the readback path.
canvas.drawRect(region, paint);
surface.flush();

paint.delete();

The right / bottom edges are exclusive (the rect covers [left, right) × [top, bottom)).

#See also

• Rect — float variant for vector drawing.
• Canvas.readPixels, Canvas.getDeviceClipBounds.