New generator: BurnTest

boxes/generators/burntest.py

@@ -0,0 +1,64 @@
+#!/usr/bin/env python3
+# Copyright (C) 2013-2019 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 BurnTest(Boxes):
+    """Test different burn values"""
+    description = """Set burn in the Default Settings to the lowest value
+to be tested. To get an idea cut a rectangle with known nominal size and
+measure the shrinkage due to the width of the laser cut. The burn value is
+half the difference of the overall size as shrinkage is occuring on both
+sides. You can use the reference rectangle as it is rendered without burn
+correction."""
+
+    ui_group = "Part"
+
+    def __init__(self):
+        Boxes.__init__(self)
+
+        self.addSettingsArgs(edges.FingerJointSettings)
+        self.buildArgParser(x=100)
+        self.argparser.add_argument(
+            "--step",  action="store", type=float, default=0.01,
+            help="increases in burn value between the sides")
+        self.argparser.add_argument(
+            "--pairs",  action="store", type=int, default=2,
+            help="number of pairs (each testing four burn values)")
+
+
+    def render(self):
+        x, s = self.x, self.step
+        t = self.thickness
+
+        for cnt in range(self.pairs):
+            
+            self.moveTo(t, t)
+            for i in range(4):
+                self.text("%.3fmm" % self.burn, x/2, 2*t, align="center")
+                self.edges["f"](x)
+                self.corner(90)
+                self.burn += s
+                
+            self.burn -= 4*s
+
+            self.moveTo(x+2*t+self.spacing, -t)
+            for i in range(4):
+                self.text("%.3fmm" % self.burn, x/2, 2*t, align="center")
+                self.edges["F"](x)
+                self.polyline(t, 90, t)
+                self.burn += s
+            self.moveTo(x+2*t+self.spacing, t)