GDScpp

GDScpp is a C++ library that make GDS file manipulation easier. Even though GDScpp can be compiled as a stand-alone program, it is intended to be used as a library.

Version: 1.1

Features

• Convert GDS data to ASCII.
• Easily create GDS files.
• Import GDS files.
• Extract the root GDS structures.
• Create a hierarchy diagram of all the GDS structure dependencies.
• Direct importing of GDS files with redundancy checking
• Create bounding box of all the GDS structures

Getting Started

Prerequisites

The following packages is required to successfully compile and execute GDScpp.

apt install build-essencials cmake  # for compiling
apt install graphviz                # for creating hierarchy diagram(dot file)

Installation

# Current directory: GDScpp root
mkdir build && cd build
cmake ..
make

Usage

A few examples are provided in the examples folder to show some of GDScpp's functionality.

#include "gdsCpp.hpp"

int main(int argc, char *argv[]){
  gdscpp fooGDS;
  gdsSTR fooSTR;

  fooSTR.name = "example";

  std::vector<int> corX = {  0, 200, 400};
  std::vector<int> corY = {700, 900, 700};
  fooSTR.PATH.push_back(drawPath(1, 5, corX, corY));

  corX = {200, 200};
  corY = {900, 000};
  fooSTR.PATH.push_back(drawPath(1, 5, corX, corY));

  corX = {0, 150, 150, 250, 250, 150, 150, 400, 400,   0, 0};
  corY = {0,   0, 250, 250, 150, 150,   0,   0, 400, 400, 0};
  fooSTR.BOUNDARY.push_back(drawBoundary(2, corX, corY));

  fooGDS.setSTR(fooSTR);
  fooGDS.write(fileName);

  return 0;
}

GDS Interpreter

Translate GDS file directly to ASCII.

./gdscpp -i input.gds
or
./gdscpp -i input.gds >> outfile.txt

GDS Read Write

Imports a GDS file into memory and exports a minimal GDS file out.

./gdscpp -rw input.gds -o output.gds

GDS Root Structures

Calculates the root structures of the GDS file

./gdscpp -rs input.gds

GDS structure hierarchy

generates a diagram of the hierarchical structure of the GDS file.

./gdscpp -r input.gds

Work in progress

• Create a map to easily find the structures
• Refactoring of GDScpp into a more standard library format
• Extract a desired GDS structure to a separate file

Notes

• Text and nodes are not fully supported.
• Box is currently not supported.

Change Log

2020-06-11 Improved GDS read-in redundancy checking; AREF, BOX and TEXT is working; Bug fixes. 2020-02-25 Updated Readme, added get_database_units_in_m function.