qmk_firmware/keyboards/handwired/3dp660/3dp660.h

 /* Copyright 2020 gooberpsycho
  * 
  * 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/>. 
  */ 

#pragma once
#include "quantum.h"

// The first section contains all of the arguments
// The second converts the arguments into a two-dimensional array
#define LAYOUT_66_ansi( \
  k00, k01, k02, k03, k04, k05, k06, k07, k08, k09, k0A, k0B, k0C, k0D, k0E,    \
  k10, k11, k12, k13, k14, k15, k16, k17, k18, k19, k1A, k1B, k1C, k1D, k1E,    \
  k20, k21, k22, k23, k24, k25, k26, k27, k28, k29, k2A, k2B, k2C,              \
  k30, k31, k32, k33, k34, k35, k36, k37, k38, k39, k3A,      k3C, k3D,         \
  k40, k41, k42,           k45,                k49, k4A, k4B, k4C, k4D, k4E     \
) \
{ \
  {k00,   k01,   k02,   k03,   k04,   k05,   k06,   k07,   k08,   k09,   k0A,   k0B,   k0C,   k0D,   k0E}, \
  {k10,   k11,   k12,   k13,   k14,   k15,   k16,   k17,   k18,   k19,   k1A,   k1B,   k1C,   k1D,   k1E}, \
  {k20,   k21,   k22,   k23,   k24,   k25,   k26,   k27,   k28,   k29,   k2A,   k2B,   k2C,   KC_NO, KC_NO}, \
  {k30,   k31,   k32,   k33,   k34,   k35,   k36,   k37,   k38,   k39,   k3A,   KC_NO, k3C,   k3D,   KC_NO}, \
  {k40,   k41,   k42,   KC_NO, KC_NO, k45,   KC_NO, KC_NO, KC_NO, k49,   k4A,   k4B,   k4C,   k4D,   k4E} \
}