1.0.4 mat3.pos=

src/vmath.nim

@@ -499,7 +499,11 @@ proc `~=`*[T](a, b: GMat4[T]): bool =
   a[0] ~= b[0] and a[1] ~= b[1] and a[2] ~= b[2] and a[3] ~= b[3]
 
 proc pos*[T](a: GMat3[T]): GVec2[T] =
-  return [a[2][2], a[2][1]]
+  [a[2][0], a[2][1]]
+
+proc `pos=`*[T](a: var GMat3[T], pos: GVec2[T]) =
+  a[2][0] = pos.x
+  a[2][1] = pos.y
 
 proc `*`*[T](a, b: GMat3[T]): GMat3[T] =
   result[0, 0] = b[0, 0] * a[0, 0] + b[0, 1] * a[1, 0] + b[0, 2] * a[2, 0]

tests/test.nim

@@ -355,6 +355,12 @@ block:
     [0.0, 0.0, 0.0, 1.0]
   ]
 
+  doAssert translate(vec2(1, 2)).pos == vec2(1, 2)
+
+  var translation = translate(vec2(1, 2))
+  translation.pos = vec2(3, 4)
+  doAssert translation.pos == vec2(3, 4)
+
 block:
   # Test basic vector mat4 and quat.
   var m1 = mat4(

vmath.nimble

@@ -1,4 +1,4 @@
-version       = "1.0.3"
+version       = "1.0.4"
 author        = "treeform"
 description   = "Your single stop for vector math routines for 2d and 3d graphics."
 license       = "MIT"