Index: trunk/src_plugins/act_draw/act_draw.c
===================================================================
--- trunk/src_plugins/act_draw/act_draw.c	(revision 31721)
+++ trunk/src_plugins/act_draw/act_draw.c	(revision 31722)
@@ -63,6 +63,7 @@
 	} while(0)
 
 #include "act_pstk_proto.c"
+#include "act_polybool.c"
 
 static const char pcb_acts_LineNew[] = "LineNew([noundo,] data, layer, X1, Y1, X2, Y2, Thickness, Clearance, Flags)";
 static const char pcb_acth_LineNew[] = "Create a pcb line segment on a layer. For now data must be \"pcb\". Returns the idpath of the new object or 0 on error.";
@@ -470,7 +471,8 @@
 	{"PolyNewEnd", pcb_act_PolyNewEnd, pcb_acth_PolyNewEnd, pcb_acts_PolyNewEnd},
 	{"PstkProtoTmp", pcb_act_PstkProtoTmp, pcb_acth_PstkProtoTmp, pcb_acts_PstkProtoTmp},
 	{"PstkProtoEdit", pcb_act_PstkProtoEdit, pcb_acth_PstkProtoEdit, pcb_acts_PstkProtoEdit},
-	{"LayerObjDup", pcb_act_LayerObjDup, pcb_acth_LayerObjDup, pcb_acts_LayerObjDup}
+	{"LayerObjDup", pcb_act_LayerObjDup, pcb_acth_LayerObjDup, pcb_acts_LayerObjDup},
+	{"PolyBool", pcb_act_PolyBool, pcb_acth_PolyBool, pcb_acts_PolyBool}
 };
 
 static const char *act_draw_cookie = "act_draw";
Index: trunk/src_plugins/act_draw/act_polybool.c
===================================================================
--- trunk/src_plugins/act_draw/act_polybool.c	(nonexistent)
+++ trunk/src_plugins/act_draw/act_polybool.c	(revision 31722)
@@ -0,0 +1,94 @@
+/*
+ *                            COPYRIGHT
+ *
+ *  pcb-rnd, interactive printed circuit board design
+ *  Copyright (C) 2020 Tibor 'Igor2' Palinkas
+ *
+ *  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, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ *  Contact:
+ *    Project page: http://repo.hu/projects/pcb-rnd
+ *    lead developer: http://repo.hu/projects/pcb-rnd/contact.html
+ *    mailing list: pcb-rnd (at) list.repo.hu (send "subscribe")
+ */
+
+/* included from act_draw.c */
+
+#include "obj_pstk_inlines.h"
+
+static void pick_obj(vtp0_t *objs)
+{
+	rnd_coord_t x, y;
+	const char *msg = objs->used == 0 ? ask_first : ask_subseq;
+	for(;;) {
+		rnd_hid_get_coords(msg, &x, &y, 1);
+		rnd_trace("xy: %$mm %$mm\n", x, y);
+	}
+}
+
+static const char pcb_acts_PolyBool[] = "PstkProto([noundo,] unite|isect|sub|xor, [poly1, poly2, [poly...]])\n";
+static const char pcb_acth_PolyBool[] = "Perform polygon boolean operation on the clipped polygons referred. A poly is either and idpath, selected, found or object (for the object under the cursor). When not specified, two object polygons are used.";
+static fgw_error_t pcb_act_PolyBool(fgw_arg_t *res, int argc, fgw_arg_t *argv)
+{
+	char *cmd;
+	int cmdi, n;
+	vtp0_t objs;
+	rnd_bool_op_t bop;
+	const char *ask_first, *ask_subseq;
+	DRAWOPTARG;
+
+
+	RND_ACT_CONVARG(1+ao, FGW_STR, PolyBool, cmd = argv[1+ao].val.str);
+
+	cmdi = act_draw_keywords_sphash(cmd);
+	switch(cmdi) {
+		case act_draw_keywords_unite: bop = RND_PBO_UNITE; ask_first = ask_subseq = "click on polygon to unite"; break;
+		case act_draw_keywords_isect: bop = RND_PBO_ISECT; ask_first = ask_subseq = "click on polygon to contribute in intersection"; break;
+		case act_draw_keywords_sub:   bop = RND_PBO_SUB; ask_first = "click on polygon to subtract other polygons from"; ask_subseq = "click on polygon to subtract from the first"; break;
+		case act_draw_keywords_xor:   bop = RND_PBO_XOR; ask_first = ask_subseq = "click on polygon to xor"; break;
+		default:
+			RND_ACT_FAIL(PolyBool);
+	}
+
+	RND_ACT_IRES(-1);
+	vtp0_init(&objs);
+	for(n = 2+ao; n < argc; n++) {
+		if ((argv[n].type & FGW_STR) == FGW_STR) {
+			if (strcmp(argv[n].val.str, "object") == 0) {
+				pick_obj(&objs);
+			}
+			else {
+				rnd_message(RND_MSG_ERROR, "Invalid polygon specification string: '%s'\n", argv[n].val.str);
+				goto error;
+			}
+		}
+		else {
+			pcb_idpath_t *idp;
+			RND_ACT_MAY_CONVARG(n, FGW_IDPATH, PolyBool, idp = fgw_idpath(&argv[n]));
+			if ((idp == NULL) || !fgw_ptr_in_domain(&rnd_fgw, &argv[n], RND_PTR_DOMAIN_IDPATH)) {
+				rnd_message(RND_MSG_ERROR, "Invalid polygon specification idpath in arg %d\n", n);
+				goto error;
+			}
+		}
+	}
+
+	while(objs.used < 2)
+		pick_obj(&objs);
+
+	error:;
+	vtp0_uninit(&objs);
+	return 0;
+}
+
Index: trunk/src_plugins/act_draw/keywords.sphash
===================================================================
--- trunk/src_plugins/act_draw/keywords.sphash	(revision 31721)
+++ trunk/src_plugins/act_draw/keywords.sphash	(revision 31722)
@@ -7,3 +7,7 @@
 remove
 hdia
 shape:line
+unite
+isect
+sub
+xor