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This commit is contained in:
Ryan Oldenburg 2020-11-30 12:29:53 -06:00
parent 68d2c6a585
commit 1254cefe34
1 changed files with 6 additions and 6 deletions
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12
src/vmath.nim
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@ -661,7 +661,7 @@ proc transpose*(a: Mat4): Mat4 {.inline.} =
]
proc determinant*(a: Mat4): float32 =
var
let
a00 = a[0]
a01 = a[1]
a02 = a[2]
@ -689,7 +689,7 @@ proc determinant*(a: Mat4): float32 =
)
proc inverse*(a: Mat4): Mat4 =
var
let
a00 = a[0]
a01 = a[1]
a02 = a[2]
@ -707,7 +707,7 @@ proc inverse*(a: Mat4): Mat4 =
a32 = a[14]
a33 = a[15]
var
let
b00 = a00 * a11 - a01 * a10
b01 = a00 * a12 - a02 * a10
b02 = a00 * a13 - a03 * a10
@ -722,7 +722,7 @@ proc inverse*(a: Mat4): Mat4 =
b11 = a22 * a33 - a23 * a32
# Calculate the inverse determinant.
var invDet = 1.0/(b00*b11 - b01*b10 + b02*b09 + b03*b08 - b04*b07 + b05*b06)
let invDet = 1.0/(b00*b11 - b01*b10 + b02*b09 + b03*b08 - b04*b07 + b05*b06)
result[00] = (+a11 * b11 - a12 * b10 + a13 * b09) * invDet
result[01] = (-a01 * b11 + a02 * b10 - a03 * b09) * invDet
@ -742,7 +742,7 @@ proc inverse*(a: Mat4): Mat4 =
result[15] = (+a20 * b03 - a21 * b01 + a22 * b00) * invDet
proc `*`*(a, b: Mat4): Mat4 =
var
let
a00 = a[0]
a01 = a[1]
a02 = a[2]
@ -760,7 +760,7 @@ proc `*`*(a, b: Mat4): Mat4 =
a32 = a[14]
a33 = a[15]
var
let
b00 = b[0]
b01 = b[1]
b02 = b[2]