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glfw: add glfw.getTime

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
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Stephen Gutekanst 2021-10-16 17:45:23 -07:00 • committed by Stephen Gutekanst
parent c0dc10c33a
commit e2b65c6fb9
1 changed files with 34 additions and 32 deletions
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66
glfw/src/time.zig
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@ -10,8 +10,8 @@ const getError = @import("errors.zig").getError;
/// has been set using @ref glfwSetTime it measures time elapsed since GLFW was /// has been set using @ref glfwSetTime it measures time elapsed since GLFW was
/// initialized. /// initialized.
/// ///
/// This function and @ref glfwSetTime are helper functions on top of @ref /// This function and @ref glfwSetTime are helper functions on top of glfw.getTimerFrequency
/// glfwGetTimerFrequency and @ref glfwGetTimerValue. /// and glfw.getTimerValue.
/// ///
/// The resolution of the timer is system dependent, but is usually on the order /// The resolution of the timer is system dependent, but is usually on the order
/// of a few micro- or nanoseconds. It uses the highest-resolution monotonic /// of a few micro- or nanoseconds. It uses the highest-resolution monotonic
@ -27,9 +27,6 @@ const getError = @import("errors.zig").getError;
/// externally synchronized with calls to @ref glfwSetTime. /// externally synchronized with calls to @ref glfwSetTime.
/// ///
/// see also: time /// see also: time
///
///
/// @ingroup input
pub inline fn getTime() f64 { pub inline fn getTime() f64 {
const time = c.glfwGetTime(); const time = c.glfwGetTime();
@ -41,34 +38,31 @@ pub inline fn getTime() f64 {
return time; return time;
} }
// TODO(time): /// Sets the GLFW time.
// /// Sets the GLFW time. ///
// /// /// This function sets the current GLFW time, in seconds. The value must be a positive finite
// /// This function sets the current GLFW time, in seconds. The value must be /// number less than or equal to 18446744073.0, which is approximately 584.5 years.
// /// a positive finite number less than or equal to 18446744073.0, which is ///
// /// approximately 584.5 years. /// This function and @ref glfwGetTime are helper functions on top of glfw.getTimerFrequency and
// /// /// glfw.getTimerValue.
// /// This function and @ref glfwGetTime are helper functions on top of @ref ///
// /// glfwGetTimerFrequency and @ref glfwGetTimerValue. /// @param[in] time The new value, in seconds.
// /// ///
// /// @param[in] time The new value, in seconds. /// Possible errors include glfw.Error.NotInitialized and glfw.Error.InvalidValue.
// /// ///
// /// Possible errors include glfw.Error.NotInitialized and glfw.Error.InvalidValue. /// The upper limit of GLFW time is calculated as `floor((2^64 - 1) / 10^9)` and is due to
// /// /// implementations storing nanoseconds in 64 bits. The limit may be increased in the future.
// /// The upper limit of GLFW time is calculated as ///
// /// floor((2<sup>64</sup> - 1) / 10<sup>9</sup>) and is due to implementations /// @thread_safety This function may be called from any thread. Reading and writing of the internal
// /// storing nanoseconds in 64 bits. The limit may be increased in the future. /// base time is not atomic, so it needs to be externally synchronized with calls to glfw.getTime.
// /// ///
// /// @thread_safety This function may be called from any thread. Reading and /// see also: time
// /// writing of the internal base time is not atomic, so it needs to be pub inline fn setTime(time: f64) Error!void {
// /// externally synchronized with calls to @ref glfwGetTime. c.glfwSetTime(time);
// /// try getError();
// /// see also: time }
// ///
// ///
// /// @ingroup input
// GLFWAPI void glfwSetTime(double time);
// TODO(time):
// /// Returns the current value of the raw timer. // /// Returns the current value of the raw timer.
// /// // ///
// /// This function returns the current value of the raw timer, measured in // /// This function returns the current value of the raw timer, measured in
@ -112,3 +106,11 @@ test "getTime" {
_ = getTime(); _ = getTime();
} }
test "getTime" {
const glfw = @import("main.zig");
try glfw.init();
defer glfw.terminate();
_ = getTime();
}