LivarotDefs.h

Go to the documentation of this file.

// SPDX-License-Identifier: GPL-2.0-or-later
 * Authors:
 * see git history
 * Fred
 *
 * Copyright (C) 2018 Authors
 * Released under GNU GPL v2+, read the file 'COPYING' for more information.
 */
 
#ifndef my_defs
#define my_defs
 
#include <cstdint>
 
// error codes (mostly obsolete)
enum
{
  avl_no_err = 0,       // 0 is the error code for "everything OK"
  avl_bal_err = 1,
  avl_rm_err = 2,
  avl_ins_err = 3,
  shape_euler_err = 4,      // computations result in a non-eulerian graph, thus the function cannot do a proper polygon
  // despite the rounding sheme, this still happen with uber-complex graphs
  // note that coordinates are stored in double => double precision for the computation is not even
  // enough to get exact results (need quadruple precision, i think).
  shape_input_err = 5,      // the function was given an incorrect input (not a polygon, or not eulerian)
  shape_nothing_to_do = 6       // the function had nothing to do (zero offset, etc)
};
 
// return codes for the find function in the AVL tree (private)
 
enum
{
  not_found = 0,      
  found_exact = 1,    
  found_on_left = 2,  
  found_on_right = 3, 
  found_between = 4   
};
 
// types of cap for stroking polylines
enum ButtType
{
  butt_straight,        // straight line
  butt_square,          // half square
  butt_round,           // half circle
  butt_pointy           // a little pointy hat
};
 
// types of joins for stroking paths
enum JoinType
{
  join_straight,        // a straight line
  join_round,           // arc of circle (in fact, one or two quadratic bezier curve chunks)
  join_pointy           // a miter join (uses the miter parameter)
};
 
enum FillRule
{
  fill_oddEven   = 0,
  fill_nonZero   = 1,
  fill_positive  = 2,
  fill_justDont = 3
};
 
// boolean operation
enum BooleanOp
{
  bool_op_union,        // A OR B
  bool_op_inters,       // A AND B
  bool_op_diff,         // A \ B
  bool_op_symdiff,              // A XOR B
  bool_op_cut,                  // coupure (pleines)
  bool_op_slice                 // coupure (contour)
};
 
enum Side {
    LEFT = 0,
    RIGHT = 1
};
 
enum FirstOrLast {
    FIRST = 0,
    LAST = 1
};
 
#endif