MyouProject/vmath
3
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add some more matrix * vector operatoins.

Browse source
This commit is contained in:
treeform 2021-07-05 09:54:23 -07:00
parent b2877a9cde
commit 9b9f8f525e
1 changed files with 14 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
src/vmath.nim
View file

@ -891,6 +891,12 @@ proc `*`*[T](a, b: GMat3[T]): GMat3[T] =
result[2, 1] = b[2, 0] * a[0, 1] + b[2, 1] * a[1, 1] + b[2, 2] * a[2, 1]
result[2, 2] = b[2, 0] * a[0, 2] + b[2, 1] * a[1, 2] + b[2, 2] * a[2, 2]
proc `*`*[T](a: GMat2[T], b: GVec2[T]): GVec2[T] =
gvec2[T](
a[0, 0] * b.x + a[1, 0] * b.y,
a[0, 1] * b.x + a[1, 1] * b.y
)
proc `*`*[T](a: GMat3[T], b: GVec2[T]): GVec2[T] =
gvec2[T](
a[0, 0] * b.x + a[1, 0] * b.y + a[2, 0],
@ -961,6 +967,14 @@ proc `*`*[T](a: GMat4[T], b: GVec3[T]): GVec3[T] =
a[0, 2] * b.x + a[1, 2] * b.y + a[2, 2] * b.z + a[3, 2]
)
proc `*`*[T](a: GMat4[T], b: GVec4[T]): GVec4[T] =
gvec4[T](
a[0, 0] * b.x + a[1, 0] * b.y + a[2, 0] * b.z + a[3, 0] * b.w,
a[0, 1] * b.x + a[1, 1] * b.y + a[2, 1] * b.z + a[3, 1] * b.w,
a[0, 2] * b.x + a[1, 2] * b.y + a[2, 2] * b.z + a[3, 2] * b.w,
a[0, 3] * b.x + a[1, 3] * b.y + a[2, 3] * b.z + a[3, 3] * b.w
)
proc transpose*[T](a: GMat3[T]): GMat3[T] =
## Return an transpose of the matrix.
gmat3[T](