strange2_glm.nim

import math
import glm

proc copyPoly*(verts: seq[Vec2f]): seq[Vec2f] =
  result = newSeq[Vec2f](verts.len)
  for i in 0..<verts.len:
    result[i] = verts[i]

proc copyPolyBroken*(verts: seq[Vec2f]): seq[Vec2f] =
  var p = newSeq[Vec2f](verts.len)
  for i in 0..<verts.len:
    p[i] = verts[i]
  return p

var poly = newSeq[Vec2f](3)
poly[0] = vec2f(10.0,20.0)
poly[1] = vec2f(20.0,10.0)
poly[2] = vec2f(30.0,30.0)

var rpoly = copyPoly(poly)
var rpoly2 = copyPolyBroken(poly)

echo "orig: ", poly
echo "copy: ", rpoly
echo "copy2: ", rpoly2
if rpoly[1] == vec2f(20.0,10.0) and rpoly[2] == vec2f(20.0,10.0):
  echo "behaving correctly"
else:
  echo "behaving incorrectly"