CGPdocs

timer_interval

Timer looping over a time interval [t_min, t_max] (periodic animations).

Derives from: timer_basic

module 17_timersource: timer_interval.hpp
0 functions take it0 return it0 operators
The same irregular frames seen by the three timers: timer_basic.t grows by dt at each update, timer_interval.t loops back to t_min when it reaches t_max, and timer_event_periodic sets event to true at the first frame after each period has elapsed.
The same irregular frames seen by the three timers: timer_basic.t grows by dt at each update, timer_interval.t loops back to t_min when it reaches t_max, and timer_event_periodic sets event to true at the first frame after each period has elapsed. Tap to enlarge.

Fields and methods

Members of the struct timer_interval. Most of what you do with a CGP type goes through the free functions listed below.

Fields

float t_minLower bound of the interval in which t loops, 0 by default.
float t_maxUpper bound (excluded) of the interval in which t loops, 1 by default.

Methods

timer_interval(float t_min = 0.0f, float t_max = 1.0f)
Builds a running timer whose time t starts at t_min and loops in [t_min, t_max) (asserts t_max > t_min). src
float update()
Advances t as timer_basic::update() and wraps it back into [t_min, t_max), returning the time step; a step longer than t_max - t_min is discarded (t unchanged) and 0 is returned. src
Inherited from timer_basic (4 members)

Fields

float tAccumulated time in seconds, multiplied by scale, 0 until the second update().
float scaleMultiplier applied to the elapsed real time (1 by default; larger values accelerate the animation).

Methods

void start()
Resumes the timer, measuring the next time step from now (the time spent stopped is not counted). src
void stop()
Pauses the timer; update() then returns 0 and t stays constant. src

Functions taking a timer_interval

None.

Functions returning a timer_interval

None.

Operators

None.

CGP - Computer Graphics Programming.