`point-scale``point``factor`procedure`point-scale!``point``factor``#!optional``dest`procedureEfficiently multiply the X and Y values of

`point`by`factor`(a float or integer). E.g.`factor`0.5 halves the values,`factor`2.0 doubles the values. sdl2:point can only hold integer values, so the results will be truncated to integers. The results will be clamped to the range -2147483648 to 2147483647.These procedures are available in

**sdl2 egg version 0.2.0 and higher**.`point-scale`returns a new managed sdl2:point.`point-scale!`modifies and returns`dest`. If`dest`is omitted,`point`is modified and returned.