47 lines
1.7 KiB
Core
47 lines
1.7 KiB
Core
#import "MathF32.core"
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Vec3 :: struct ;; x: F32; y: F32; z: F32
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Length :: (a: Vec3): F32 ;; return sqrtf(a.x*a.x + a.y*a.y + a.z*a.z)
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Negate :: (a: Vec3): Vec3 ;; return {-a.x, -a.y, -a.z}
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Dot :: (a: Vec3, b: Vec3): F32 ;; return a.x*b.x + a.y*b.y + a.z*b.z
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"*" :: (a: Vec3, b: Vec3): Vec3 ;; return {a.x*b.x, a.y*b.y, a.z*b.z}
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"*" :: (a: Vec3, b: F32) : Vec3 ;; return {a.x*b, a.y*b, a.z*b}
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"*" :: (a: F32, b: Vec3) : Vec3 ;; return {a*b.x, a*b.y, a*b.z}
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"-" :: (a: Vec3, b: Vec3): Vec3 ;; return {a.x-b.x, a.y-b.y, a.z-b.z}
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"-" :: (a: Vec3, b: F32) : Vec3 ;; return {a.x-b, a.y-b, a.z-b}
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"-" :: (a: F32, b: Vec3) : Vec3 ;; return {a-b.x, a-b.y, a-b.z}
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"+" :: (a: Vec3, b: Vec3): Vec3 ;; return {a.x+b.x, a.y+b.y, a.z+b.z}
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"+" :: (a: Vec3, b: F32) : Vec3 ;; return {a.x+b, a.y+b, a.z+b}
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"+" :: (a: F32, b: Vec3) : Vec3 ;; return {a+b.x, a+b.y, a+b.z}
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"/" :: (a: Vec3, b: Vec3): Vec3 ;; return {a.x/b.x, a.y/b.y, a.z/b.z}
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"/" :: (a: Vec3, b: F32) : Vec3 ;; return {a.x/b, a.y/b, a.z/b}
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"/" :: (a: F32, b: Vec3) : Vec3 ;; return {a/b.x, a/b.y, a/b.z}
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Cross :: (a: Vec3, b: Vec3): Vec3
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result := Vec3{
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a.y * b.z - a.z * b.y,
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a.z * b.x - a.x * b.z,
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a.x * b.y - a.y * b.x,
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}
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return result
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Normalize :: (a: Vec3): Vec3
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length := Length(a)
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result := a / length
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return result
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Reflect :: (a: Vec3, normal: Vec3): Vec3
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an := Dot(a, normal)*2
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result := a - a * an
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return result
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ConvertToARGB :: (a: Vec3): U32
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a.x = Clamp(0, a.x, 1)
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a.y = Clamp(0, a.y, 1)
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a.z = Clamp(0, a.z, 1)
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r := (a.x * 255)->U32 << 16
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g := (a.y * 255)->U32 << 8
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b := (a.z * 255)->U32 << 0
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result := r | g | b
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return result
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