strips/voxelotl-engine
2
0
Fork 0
mirror of https://github.com/GayPizzaSpecifications/voxelotl-engine.git synced 2025-08-05 22:21:33 +00:00
Code Issues Packages Projects Releases Wiki Activity

expand 2d maths classes

Browse Source
This commit is contained in:
a dinosaur
2024-09-13 17:11:46 +10:00
parent d7cb051fb7
commit c0de651947
4 changed files with 148 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
Sources/Voxelotl/Math/Extent.swift
View File

@ -1,13 +1,46 @@
struct Extent<T: AdditiveArithmetic>: Equatable {
var top: T, bottom: T, left: T, right: T
public struct Extent<T: AdditiveArithmetic & Hashable>: Hashable {
public var left: T, top: T, right: T, bottom: T
@inline(__always) static func == (lhs: Self, rhs: Self) -> Bool {
@inline(__always) public var topLeft: Point<T> { .init(left, top) }
@inline(__always) public var topRight: Point<T> { .init(right, top) }
@inline(__always) public var bottomLeft: Point<T> { .init(left, bottom) }
@inline(__always) public var bottomRight: Point<T> { .init(right, bottom) }
@inline(__always) public static func == (lhs: Self, rhs: Self) -> Bool {
lhs.left == rhs.left && lhs.right == rhs.right && lhs.top == rhs.top && lhs.bottom == rhs.bottom
}
}
extension Extent where T: Comparable {
public extension Extent where T: Comparable {
var size: Size<T> { .init(
right > left ? right - left : left - right,
bottom > top ? bottom - top : top - bottom) }
}
public extension Extent where T: SIMDScalar {
init(from: SIMD2<T>, to: SIMD2<T>) {
self.left = from.x
self.top = from.y
self.right = to.x
self.bottom = to.y
}
}
public extension Extent where T: AdditiveArithmetic {
init(_ rect: Rect<T>) {
self.left = rect.x
self.top = rect.y
self.right = rect.x + rect.w
self.bottom = rect.y + rect.h
}
}
public extension Extent where T: Numeric {
@inline(__always) static func * (lhs: Self, rhs: Size<T>) -> Self {
.init(
left: lhs.left * rhs.w,
top: lhs.top * rhs.w,
right: lhs.right * rhs.h,
bottom: lhs.bottom * rhs.h)
}
}