diff --git a/src/vmath.nim b/src/vmath.nim
index 9b2cf28..dbb8a1c 100644
--- a/src/vmath.nim
+++ b/src/vmath.nim
@@ -2,19 +2,19 @@ import hashes, math, random, strformat, strutils
 
 export math
 
-proc between*(value, min, max: float32): bool =
+proc between*(value, min, max: float32): bool {.inline.} =
   ## Returns true if value is between min and max or equal to them.
   (value >= min) and (value <= max)
 
-proc sign*(v: float32): float32 =
+proc sign*(v: float32): float32 {.inline.} =
   ## Returns the sign of a number, -1 or 1.
   if v >= 0: 1.0 else: -1.0
 
-proc quantize*(v: float32, n: float32): float32 =
+proc quantize*(v: float32, n: float32): float32 {.inline.} =
   ## Makes v be multipe of n. Rounding to integer quantize by 1.0.
   sign(v) * floor(abs(v) / n) * n
 
-proc lerp*(a: float32, b: float32, v: float32): float32 =
+proc lerp*(a: float32, b: float32, v: float32): float32 {.inline.} =
   ## Interpolates value between a and b.
   ## * 0 -> a
   ## * 1 -> b
@@ -189,17 +189,17 @@ type Vec3* = object
   y*: float32
   z*: float32
 
-proc vec3*(x, y, z: float32): Vec3 =
+proc vec3*(x, y, z: float32): Vec3 {.inline.} =
   result.x = x
   result.y = y
   result.z = z
 
-proc vec3*(v: float32): Vec3 =
+proc vec3*(v: float32): Vec3 {.inline.} =
   result.x = v
   result.y = v
   result.z = v
 
-proc vec3*(a: Vec3): Vec3 =
+proc vec3*(a: Vec3): Vec3 {.inline.} =
   result.x = a.x
   result.y = a.y
   result.z = a.z
@@ -208,103 +208,103 @@ const X_DIR* = vec3(1.0, 0.0, 0.0)
 const Y_DIR* = vec3(0.0, 1.0, 0.0)
 const Z_DIR* = vec3(0.0, 0.0, 1.0)
 
-proc `+`*(a: Vec3, b: Vec3): Vec3 =
+proc `+`*(a: Vec3, b: Vec3): Vec3 {.inline.} =
   result.x = a.x + b.x
   result.y = a.y + b.y
   result.z = a.z + b.z
 
-proc `-`*(a: Vec3, b: Vec3): Vec3 =
+proc `-`*(a: Vec3, b: Vec3): Vec3 {.inline.} =
   result.x = a.x - b.x
   result.y = a.y - b.y
   result.z = a.z - b.z
 
-proc `-`*(a: Vec3): Vec3 =
+proc `-`*(a: Vec3): Vec3 {.inline.} =
   result.x = -a.x
   result.y = -a.y
   result.z = -a.z
 
-proc `*`*(a: Vec3, b: float32): Vec3 =
+proc `*`*(a: Vec3, b: float32): Vec3 {.inline.} =
   result.x = a.x * b
   result.y = a.y * b
   result.z = a.z * b
 
-proc `*`*(a: float32, b: Vec3): Vec3 =
+proc `*`*(a: float32, b: Vec3): Vec3 {.inline.} =
   b * a
 
-proc `/`*(a: Vec3, b: float32): Vec3 =
+proc `/`*(a: Vec3, b: float32): Vec3 {.inline.} =
   result.x = a.x / b
   result.y = a.y / b
   result.z = a.z / b
 
-proc `/`*(a: float32, b: Vec3): Vec3 =
+proc `/`*(a: float32, b: Vec3): Vec3 {.inline.} =
   result.x = a / b.x
   result.y = a / b.y
   result.z = a / b.z
 
-proc `+=`*(a: var Vec3, b: Vec3) =
+proc `+=`*(a: var Vec3, b: Vec3) {.inline.} =
   a.x += b.x
   a.y += b.y
   a.z += b.z
 
-proc `-=`*(a: var Vec3, b: Vec3) =
+proc `-=`*(a: var Vec3, b: Vec3) {.inline.} =
   a.x -= b.x
   a.y -= b.y
   a.z -= b.z
 
-proc `*=`*(a: var Vec3, b: float32) =
+proc `*=`*(a: var Vec3, b: float32) {.inline.} =
   a.x *= b
   a.y *= b
   a.z *= b
 
-proc `/=`*(a: var Vec3, b: float32) =
+proc `/=`*(a: var Vec3, b: float32) {.inline.} =
   a.x /= b
   a.y /= b
   a.z /= b
 
-proc zero*(a: var Vec3) =
+proc zero*(a: var Vec3) {.inline.} =
   a.x = 0
   a.y = 0
   a.z = 0
 
-proc `-`*(a: var Vec3): Vec3 =
+proc `-`*(a: var Vec3): Vec3 {.inline.} =
   result.x = -a.x
   result.y = -a.y
   result.z = -a.z
 
-proc hash*(a: Vec3): Hash =
+proc hash*(a: Vec3): Hash {.inline.} =
   hash((a.x, a.y, a.z))
 
-proc lengthSq*(a: Vec3): float32 =
+proc lengthSq*(a: Vec3): float32 {.inline.} =
   a.x * a.x + a.y * a.y + a.z * a.z
 
-proc length*(a: Vec3): float32 =
+proc length*(a: Vec3): float32 {.inline.} =
   sqrt(a.lengthSq)
 
-proc `length=`*(a: var Vec3, b: float32) =
+proc `length=`*(a: var Vec3, b: float32) {.inline.} =
   a *= b / a.length
 
-proc floor*(a: Vec3): Vec3 =
+proc floor*(a: Vec3): Vec3 {.inline.} =
   vec3(floor(a.x), floor(a.y), floor(a.z))
 
-proc round*(a: Vec3): Vec3 =
+proc round*(a: Vec3): Vec3 {.inline.} =
   vec3(round(a.x), round(a.y), round(a.z))
 
-proc ceil*(a: Vec3): Vec3 =
+proc ceil*(a: Vec3): Vec3 {.inline.} =
   vec3(ceil(a.x), ceil(a.y), ceil(a.z))
 
-proc normalize*(a: Vec3): Vec3 =
-  a / sqrt(a.x*a.x + a.y*a.y + a.z*a.z)
+proc normalize*(a: Vec3): Vec3 {.inline.} =
+  a / sqrt(a.x * a.x + a.y * a.y + a.z * a.z)
 
-proc cross*(a: Vec3, b: Vec3): Vec3 =
-  result.x = a.y*b.z - a.z*b.y
-  result.y = a.z*b.x - a.x*b.z
-  result.z = a.x*b.y - a.y*b.x
+proc cross*(a: Vec3, b: Vec3): Vec3 {.inline.} =
+  result.x = a.y * b.z - a.z * b.y
+  result.y = a.z * b.x - a.x * b.z
+  result.z = a.x * b.y - a.y * b.x
 
 proc computeNormal*(a, b, c: Vec3): Vec3 =
   cross(c - b, b - a).normalize()
 
-proc dot*(a: Vec3, b: Vec3): float32 =
-  a.x*b.x + a.y*b.y + a.z*b.z
+proc dot*(a: Vec3, b: Vec3): float32 {.inline.} =
+  a.x * b.x + a.y * b.y + a.z * b.z
 
 proc dir*(at: Vec3, to: Vec3): Vec3 =
   (at - to).normalize()
@@ -329,42 +329,44 @@ proc angleBetween*(a, b: Vec3): float32 =
   arccos(dot)
 
 proc `[]`*(a: Vec3, i: int): float32 =
-  assert(i == 0 or i == 1 or i == 2)
+  if i > 2:
+    raise newException(IndexDefect, "Vec3 index out of bounds")
   if i == 0:
-    return a.x
+    a.x
   elif i == 1:
-    return a.y
-  elif i == 2:
-    return a.z
+    a.y
+  else:
+    a.z
 
 proc `[]=`*(a: var Vec3, i: int, b: float32) =
-  assert(i == 0 or i == 1 or i == 2)
+  if i > 2:
+    raise newException(IndexDefect, "Vec3 index out of bounds")
   if i == 0:
     a.x = b
   elif i == 1:
     a.y = b
-  elif i == 2:
+  else:
     a.z = b
 
-proc xy*(a: Vec3): Vec2 =
+proc xy*(a: Vec3): Vec2 {.inline.} =
   vec2(a.x, a.y)
 
-proc xz*(a: Vec3): Vec2 =
+proc xz*(a: Vec3): Vec2 {.inline.} =
   vec2(a.x, a.z)
 
-proc yx*(a: Vec3): Vec2 =
+proc yx*(a: Vec3): Vec2 {.inline.} =
   vec2(a.y, a.x)
 
-proc yz*(a: Vec3): Vec2 =
+proc yz*(a: Vec3): Vec2 {.inline.} =
   vec2(a.y, a.z)
 
-proc zx*(a: Vec3): Vec2 =
+proc zx*(a: Vec3): Vec2 {.inline.} =
   vec2(a.y, a.x)
 
-proc zy*(a: Vec3): Vec2 =
+proc zy*(a: Vec3): Vec2 {.inline.} =
   vec2(a.z, a.y)
 
-proc almostEquals*(a, b: Vec3, precision = 1e-6): bool =
+proc almostEquals*(a, b: Vec3, precision = 1e-6): bool {.inline.} =
   let c = a - b
   abs(c.x) < precision and abs(c.y) < precision and abs(c.z) < precision
 
@@ -392,129 +394,130 @@ type Vec4* = object
   z*: float32
   w*: float32
 
-proc vec4*(x, y, z, w: float32): Vec4 =
+proc vec4*(x, y, z, w: float32): Vec4 {.inline.} =
   result.x = x
   result.y = y
   result.z = z
   result.w = w
 
-proc vec4*(v: float32): Vec4 =
+proc vec4*(v: float32): Vec4 {.inline.} =
   result.x = v
   result.y = v
   result.z = v
   result.w = v
 
-proc `+`*(a: Vec4, b: Vec4): Vec4 =
+proc `+`*(a: Vec4, b: Vec4): Vec4 {.inline.} =
   result.x = a.x + b.x
   result.y = a.y + b.y
   result.z = a.z + b.z
   result.w = a.w + b.w
 
-proc `-`*(a: Vec4, b: Vec4): Vec4 =
+proc `-`*(a: Vec4, b: Vec4): Vec4 {.inline.} =
   result.x = a.x - b.x
   result.y = a.y - b.y
   result.z = a.z - b.z
   result.w = a.w - b.w
 
-proc `-`*(a: Vec4): Vec4 =
+proc `-`*(a: Vec4): Vec4 {.inline.} =
   result.x = -a.x
   result.y = -a.y
   result.z = -a.z
   result.w = -a.w
 
-proc `*`*(a: Vec4, b: float32): Vec4 =
+proc `*`*(a: Vec4, b: float32): Vec4 {.inline.} =
   result.x = a.x * b
   result.y = a.y * b
   result.z = a.z * b
   result.w = a.w * b
 
-proc `*`*(a: float32, b: Vec4): Vec4 =
+proc `*`*(a: float32, b: Vec4): Vec4 {.inline.} =
   b * a
 
-proc `/`*(a: Vec4, b: float32): Vec4 =
+proc `/`*(a: Vec4, b: float32): Vec4 {.inline.} =
   result.x = a.x / b
   result.y = a.y / b
-
   result.z = a.z / b
   result.w = a.w / b
 
-proc `/`*(a: float32, b: Vec4): Vec4 =
+proc `/`*(a: float32, b: Vec4): Vec4 {.inline.}=
   result.x = a / b.x
   result.y = a / b.y
   result.z = a / b.z
   result.w = a / b.w
 
-proc `+=`*(a: var Vec4, b: Vec4) =
+proc `+=`*(a: var Vec4, b: Vec4) {.inline.} =
   a.x += b.x
   a.y += b.y
   a.z += b.z
   a.w += b.w
 
-proc `-=`*(a: var Vec4, b: Vec4) =
+proc `-=`*(a: var Vec4, b: Vec4) {.inline.} =
   a.x -= b.x
   a.y -= b.y
   a.z -= b.z
   a.w -= b.w
 
-proc `*=`*(a: var Vec4, b: float32) =
+proc `*=`*(a: var Vec4, b: float32) {.inline.} =
   a.x *= b
   a.y *= b
   a.z *= b
   a.w *= b
 
-proc `/=`*(a: var Vec4, b: float32) =
+proc `/=`*(a: var Vec4, b: float32) {.inline.} =
   a.x /= b
   a.y /= b
   a.z /= b
   a.w /= b
 
-proc zero*(a: var Vec4) =
+proc zero*(a: var Vec4) {.inline.} =
   a.x = 0
   a.y = 0
   a.z = 0
   a.w = 0
 
-proc hash*(a: Vec4): Hash =
+proc hash*(a: Vec4): Hash {.inline.} =
   hash((a.x, a.y, a.z, a.w))
 
 proc `[]`*(a: Vec4, i: int): float32 =
-  assert(i == 0 or i == 1 or i == 2)
+  if i > 3:
+    raise newException(IndexDefect, "Vec4 index out of bounds")
   if i == 0:
-    return a.x
+    a.x
   elif i == 1:
-    return a.y
+    a.y
   elif i == 2:
-    return a.z
-  elif i == 3:
-    return a.w
+    a.z
+  else:
+    a.w
 
 proc `[]=`*(a: var Vec4, i: int, b: float32) =
-  assert(i == 0 or i == 1 or i == 2)
+  if i > 3:
+    raise newException(IndexDefect, "Vec4 index out of bounds")
   if i == 0:
     a.x = b
   elif i == 1:
     a.y = b
   elif i == 2:
     a.z = b
-  elif i == 3:
+  else:
     a.w = b
 
 proc lerp*(a: Vec4, b: Vec4, v: float32): Vec4 =
   a * (1.0 - v) + b * v
 
-proc xyz*(a: Vec4): Vec3 =
+proc xyz*(a: Vec4): Vec3 {.inline.} =
   vec3(a.x, a.y, a.z)
 
 proc `$`*(a: Vec4): string =
   &"({a.x:.8f}, {a.y:.8f}, {a.z:.8f}, {a.w:.8f})"
 
-proc vec3*(a: Vec2, z = 0.0): Vec3 =
+proc vec3*(a: Vec2, z = 0.0): Vec3 {.inline.} =
   vec3(a.x, a.y, z)
 
-proc vec4*(a: Vec3, w = 0.0): Vec4 =
+proc vec4*(a: Vec3, w = 0.0): Vec4 {.inline.} =
   vec4(a.x, a.y, a.z, w)
 
-proc vec4*(a: Vec2, z = 0.0, w = 0.0): Vec4 =
+proc vec4*(a: Vec2, z = 0.0, w = 0.0): Vec4 {.inline.} =
   vec4(a.x, a.y, z, w)
 
 type Mat3* = array[9, float32] ## 3x3 Matrix