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Revert "math: add a new math.easing module (#13226)" (#13235)

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This reverts commit 758d1f44ab.
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Delyan Angelov 2022-01-20 18:57:53 +02:00 committed by GitHub
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commit 62687842e2
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vlib/math/easing.v
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// Copyright (c) 2020-2022 Leah Lundqvist. All rights reserved.
// Use of this source code is governed by a GPL license
// that can be found in the LICENSE file.
module math
pub type EasingFunction = fn (arg_1 f64) f64
pub enum EasingType {
linear
ease_in_quad
ease_out_quad
ease_in_out_quad
ease_in_cubic
ease_out_cubic
ease_in_out_cubic
ease_in_quart
ease_out_quart
ease_in_out_quart
ease_in_quint
ease_out_quint
ease_in_out_quint
}
fn linear(x f64) f64 {
return x
}
fn ease_in_quad(x f64) f64 {
return x * x
}
fn ease_out_quad(x f64) f64 {
return x * (2.0 - x)
}
fn ease_in_out_quad(x f64) f64 {
return if x < .5 { 2.0 * x * x } else { -1.0 + (4.0 - 2.0 * x) * x }
}
fn ease_in_cubic(x f64) f64 {
return x * x * x
}
fn ease_out_cubic(x f64) f64 {
return (x - 1.0) * (x - 1.0) * (x - 1.0) + 1
}
fn ease_in_out_cubic(x f64) f64 {
return if x < .5 { 4.0 * x * x * x } else { (x - 1.0) * (2.0 * x - 2.0) * (2.0 * x - 2.0) + 1.0 }
}
fn ease_in_quart(x f64) f64 {
return x * x * x * x
}
fn ease_out_quart(x f64) f64 {
return 1.0 - (x - 1.0) * (x - 1.0) * (x - 1.0) * (x - 1.0)
}
fn ease_in_out_quart(x f64) f64 {
return if x < 0.5 {
8.0 * x * x * x * x
} else {
1.0 - 8.0 * (x - 1.0) * (x - 1.0) * (x - 1.0) * (x - 1.0)
}
}
fn ease_in_quint(x f64) f64 {
return x * x * x * x * x
}
fn ease_out_quint(x f64) f64 {
return 1.0 + (x - 1.0) * (x - 1.0) * (x - 1.0) * (x - 1.0) * (x - 1.0)
}
fn ease_in_out_quint(x f64) f64 {
return if x < 0.5 {
16.0 * x * x * x * x * x
} else {
1.0 + 16.0 * (x - 1.0) * (x - 1.0) * (x - 1.0) * (x - 1.0) * (x - 1.0)
}
}
pub fn easing(easingtype EasingType) EasingFunction {
match easingtype {
.linear { return linear }
.ease_in_quad { return ease_in_quad }
.ease_out_quad { return ease_out_quad }
.ease_in_out_quad { return ease_in_out_quad }
.ease_in_cubic { return ease_in_cubic }
.ease_out_cubic { return ease_out_cubic }
.ease_in_out_cubic { return ease_in_out_cubic }
.ease_in_quart { return ease_in_quart }
.ease_out_quart { return ease_out_quart }
.ease_in_out_quart { return ease_in_out_quart }
.ease_in_quint { return ease_in_quint }
.ease_out_quint { return ease_out_quint }
.ease_in_out_quint { return ease_in_out_quint }
}
}