# panda3d.core.TrueClock¶

class TrueClock

An interface to whatever real-time clock we might have available in the current environment. There is only one TrueClock in existence, and it constructs itself.

The TrueClock returns elapsed real time in seconds since some undefined epoch. Since it is not defined at what time precisely the clock indicates zero, this value can only be meaningfully used to measure elapsed time, by sampling it at two different times and subtracting.

Inheritance diagram

getLongTime() → float

getLongTime() returns the most accurate timer we have over a long interval. It may not be very precise for measuring short intervals, but it should not drift substantially over the long haul.

getShortTime() → float

getShortTime() returns the most precise timer we have over a short interval. It may tend to drift over the long haul, but it should have lots of digits to measure short intervals very precisely.

getShortRawTime() → float

getShortRawTime() is like getShortTime(), but does not apply any corrections (e.g. paranoid-clock) to the result returned by the OS.

getErrorCount() → int

Returns the number of clock errors that have been detected. Each time a clock error is detected, in which the value returned by either of the above methods is suspect, the value returned by this method will be incremented. Applications can monitor this value and react, for instance, by resynchronizing their clocks each time this value changes.

static getGlobalPtr() → TrueClock

Returns a pointer to the one TrueClock object in the world.

Return type

TrueClock

setCpuAffinity(mask: uint32_t) → bool
property long_time

getLongTime() returns the most accurate timer we have over a long interval. It may not be very precise for measuring short intervals, but it should not drift substantially over the long haul.

getLongTime() returns the most accurate timer we have over a long interval. It may not be very precise for measuring short intervals, but it should not drift substantially over the long haul.

getLongTime() returns the most accurate timer we have over a long interval. It may not be very precise for measuring short intervals, but it should not drift substantially over the long haul.

Return type

float

property short_time

getShortTime() returns the most precise timer we have over a short interval. It may tend to drift over the long haul, but it should have lots of digits to measure short intervals very precisely.

getShortTime() returns the most precise timer we have over a short interval. It may tend to drift over the long haul, but it should have lots of digits to measure short intervals very precisely.

getShortTime() returns the most precise timer we have over a short interval. It may tend to drift over the long haul, but it should have lots of digits to measure short intervals very precisely.

Return type

float

property short_raw_time

getShortRawTime() is like getShortTime(), but does not apply any corrections (e.g. paranoid-clock) to the result returned by the OS.

getShortRawTime() is like getShortTime(), but does not apply any corrections (e.g. paranoid-clock) to the result returned by the OS.

getShortRawTime() is like getShortTime(), but does not apply any corrections (e.g. paranoid-clock) to the result returned by the OS.

Return type

float

property error_count

Returns the number of clock errors that have been detected. Each time a clock error is detected, in which the value returned by either of the above methods is suspect, the value returned by this method will be incremented. Applications can monitor this value and react, for instance, by resynchronizing their clocks each time this value changes.

Return type

int