Method Map1

src/lua/LuaOpenGL.cpp:614–639

int LuaOpenGL::Map1(lua_State* L) {
  CheckDrawingEnabled(L, __FUNCTION__);
  if (lua_gettop(L) != 6) { // NOTE: required for ParseFloatArray()
    return 0;
  }
  const GLenum  target = (GLenum)luaL_checkint(L, 1);
  const GLfloat u1     = luaL_checkfloat(L, 2);
  const GLfloat u2     = luaL_checkfloat(L, 3);
  const GLint   stride = luaL_checkint(L, 4);
  const GLint   order  = luaL_checkint(L, 5);

  const int dataSize = GetMap1TargetDataSize(target);
  if (dataSize <= 0) {
    return 0;
  }
  if ((order <= 0) || (stride != dataSize)) {
    return 0;
  }
  const int fullSize = (order * dataSize);
  float* points = new float[fullSize];
  if (ParseFloatArray(L, points, fullSize) == fullSize) {
    glMap1f(target, u1, u2, stride, order, points);
  }
  delete[] points;
  return 0;
}


int LuaOpenGL::Map2(lua_State* L) {