int MeshBinder::setVertexArray(lua_State *L)
{
Binder binder(L);
GMesh *mesh = static_cast<GMesh*>(binder.getInstance("Mesh", 1));
std::vector<float> vertices;
int order=mesh->is3d()?3:2;
if (lua_type(L, 2) == LUA_TTABLE)
{
int n = lua_objlen(L, 2);
n = (n / order) * order;
vertices.resize(n);
for (int i = 0; i < n; ++i)
{
lua_rawgeti(L, 2, i + 1);
vertices[i] = luaL_checknumber(L, -1);
lua_pop(L, 1);
}
}
else
{
int n = lua_gettop(L) - 1;
n = (n / order) * order;
vertices.resize(n);
for (int i = 0; i < n; ++i)
vertices[i] = luaL_checknumber(L, i + 2);
}
mesh->setVertexArray(&vertices[0], vertices.size());
return 0;
}
int MeshBinder::setVertices(lua_State *L)
{
Binder binder(L);
GMesh *mesh = static_cast<GMesh*>(binder.getInstance("Mesh", 1));
bool is3d=mesh->is3d();
int order=is3d?4:3;
if (lua_type(L, 2) == LUA_TTABLE)
{
int n = lua_objlen(L, 2);
for (int k = 0; k < n/order; ++k)
{
lua_rawgeti(L, 2, k * order + 1);
int i = luaL_checkinteger(L, -1) - 1;
lua_pop(L, 1);
lua_rawgeti(L, 2, k * order + 2);
float x = luaL_checknumber(L, -1);
lua_pop(L, 1);
lua_rawgeti(L, 2, k * order + 3);
float y = luaL_checknumber(L, -1);
lua_pop(L, 1);
float z=0;
if (is3d)
{
lua_rawgeti(L, 2, k * order + 4);
z = luaL_checknumber(L, -1);
lua_pop(L, 1);
}
mesh->setVertex(i, x, y, z);
}
}
else
{
int n = lua_gettop(L) - 1;
for (int k = 0; k < n/order; ++k)
{
int i = luaL_checkinteger(L, k * order + 2) - 1;
float x = luaL_checknumber(L, k * order + 3);
float y = luaL_checknumber(L, k * order + 4);
float z=0;
if (is3d)
z= luaL_checknumber(L, k * order + 5);
mesh->setVertex(i, x, y, z);
}
}
return 0;
}
int MeshBinder::getVertex(lua_State *L)
{
Binder binder(L);
GMesh *mesh = static_cast<GMesh*>(binder.getInstance("Mesh", 1));
int i = luaL_checkinteger(L, 2) - 1;
if (i < 0 || i >= mesh->getVertexArraySize())
return luaL_error(L, "The supplied index is out of bounds.");
int order=mesh->is3d()?3:2;
float x, y, z;
mesh->getVertex(i, &x, &y, &z);
lua_pushnumber(L, x);
lua_pushnumber(L, y);
if (order==3)
lua_pushnumber(L, z);
return order;
}
