voxelotl-engine/Sources/Voxelotl/FloatExtensions.swift

24 lines
1.0 KiB
Swift

public extension FloatingPoint {
@inline(__always) var degrees: Self { self * (180 / Self.pi) }
@inline(__always) var radians: Self { self * (Self.pi / 180) }
@inline(__always) func lerp(_ a: Self, _ b: Self) -> Self { b * self + a * (1 - self) }
@inline(__always) func mlerp(_ a: Self, _ b: Self) -> Self { a + (b - a) * self }
@inline(__always) func clamp(_ a: Self, _ b: Self) -> Self { min(max(self, a), b) }
@inline(__always) var saturated: Self { self.clamp(0, 1) }
}
extension SIMD3 where Scalar: FloatingPoint {
@inline(__always) static var X: Self { Self(1, 0, 0) }
@inline(__always) static var Y: Self { Self(0, 1, 0) }
@inline(__always) static var Z: Self { Self(0, 0, 1) }
@inline(__always) static var up: Self { Y }
@inline(__always) static var down: Self { -Y }
@inline(__always) static var left: Self { -X }
@inline(__always) static var right: Self { X }
@inline(__always) static var forward: Self { -Z }
@inline(__always) static var back: Self { Z }
}