7b659348a5
Change-Id: I0ff6d42a8e11f49df6fc3066e86be75015b93631 Reviewed-on: https://go-review.googlesource.com/1238 Reviewed-by: Andrew Gerrand <adg@golang.org>
27 lines
931 B
Go
27 lines
931 B
Go
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package clock provides a clock and time functions for a sprite engine.
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package clock // import "golang.org/x/mobile/sprite/clock"
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// A Time represents an instant in sprite time.
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//
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// The application using the sprite engine is responsible for
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// determining sprite time.
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//
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// Typically time 0 is when the app is initialized and time is
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// quantized at the intended frame rate. For example, an app may
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// record wall time when it is initialized
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//
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// var start = time.Now()
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//
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// and then compute the current instant in time for 60 FPS:
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//
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// now := clock.Time(time.Since(start) * 60 / time.Second)
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//
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// An application can pause or reset sprite time, but it must be aware
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// of any stateful sprite.Arranger instances that expect time to
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// continue.
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type Time int32
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