From dfcf3d65c8c0d4dd1f1a1c47a3ca5e36b0fd0d9e Mon Sep 17 00:00:00 2001
From: Florian Festi <florian@festi.info>
Date: Sun, 1 Oct 2017 20:34:19 +0200
Subject: [PATCH] New generator: ConcaveKnob in Parts

---
 boxes/generators/concaveknob.py | 62 +++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 boxes/generators/concaveknob.py

diff --git a/boxes/generators/concaveknob.py b/boxes/generators/concaveknob.py
new file mode 100644
index 0000000..ee0d37b
--- /dev/null
+++ b/boxes/generators/concaveknob.py
@@ -0,0 +1,62 @@
+#!/usr/bin/env python3
+# Copyright (C) 2013-2017 Florian Festi
+#
+#   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 3 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/>.
+
+from boxes import *
+
+class ConcaveKnob(Boxes):
+    """Round knob serraded outside for better gripping"""
+    
+    ui_group = "Part"
+
+    def __init__(self):
+        Boxes.__init__(self)
+
+        # Add non default cli params if needed (see argparse std lib)
+        self.argparser.add_argument(
+            "--diameter",  action="store", type=float, default=50.,
+            help="Diameter of the knob")
+        self.argparser.add_argument(
+            "--serrations",  action="store", type=int, default=3,
+            help="Number of serrations")
+        self.argparser.add_argument(
+            "--rounded",  action="store", type=float, default=.2,
+            help="Amount of circumference used for non convex parts")
+        self.argparser.add_argument(
+            "--angle",  action="store", type=float, default=70.,
+            help="Angle between convex and concave parts")        
+        self.argparser.add_argument(
+            "--bolthole",  action="store", type=float, default=6.,
+            help="Diameter of the bolt hole")
+        self.argparser.add_argument(
+            "--hexhead",  action="store", type=float, default=10.,
+            help="Width of the hex bolt head")
+
+    def render(self):
+        t = self.thickness
+        # Initialize canvas
+        self.open()
+        self.parts.concaveKnob(self.diameter, self.serrations,
+                               self.rounded, self.angle,
+                               hole=self.bolthole, move="right")
+        self.parts.concaveKnob(self.diameter, self.serrations,
+                               self.rounded, self.angle,
+                               callback=lambda: self.nutHole(self.hexhead),
+                               move="right")
+        self.parts.concaveKnob(self.diameter, self.serrations,
+                               self.rounded, self.angle)
+
+        self.close()
+