/******************************************************************************\

CAMotics is an Open-Source simulation and CAM software.

Copyright (C) 2011-2019 Joseph Coffland <joseph@cauldrondevelopment.com>

This program is free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation, either version 2 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program. If not, see <http://www.gnu.org/licenses/>.

\******************************************************************************/

#include "TransformStack.h"

using namespace GCode;

void TransformStack::push() {stack.push_back(top());}

void TransformStack::pop() {

if (size() == 1) THROW("Transform stack empty");

stack.pop_back();

}

Transform &TransformStack::pull() {

if (size() == 1) top().toIdentity();

else top() = stack[size() - 2];

return top();

}