Instance Method

convertPoint:fromLayer:

Converts the point from the specified layer’s coordinate system to the receiver’s coordinate system.

Declaration

- (CGPoint)convertPoint:(CGPoint)p fromLayer:(CALayer *)l;

Parameters

p

A point specifying a location in the coordinate system of l.

l

The layer with p in its coordinate system. The receiver and l and must share a common parent layer. This parameter may be nil.

Return Value

The point converted to the receiver’s coordinate system.

Discussion

If you specify nil for the l parameter, this method returns the original point subtracted from the layer's frame's origin.

See Also

Mapping Between Coordinate and Time Spaces

- convertPoint:toLayer:

Converts the point from the receiver’s coordinate system to the specified layer’s coordinate system.

- convertRect:fromLayer:

Converts the rectangle from the specified layer’s coordinate system to the receiver’s coordinate system.

- convertRect:toLayer:

Converts the rectangle from the receiver’s coordinate system to the specified layer’s coordinate system.

- convertTime:fromLayer:

Converts the time interval from the specified layer’s time space to the receiver’s time space.

- convertTime:toLayer:

Converts the time interval from the receiver’s time space to the specified layer’s time space