Allow negative render of soldermask per #50

Update example code and rendering to show change

1 files changed, 50 insertions, 0 deletions

diff --git a/gerber/render/theme.py b/gerber/render/theme.py
new file mode 100644
index 0000000..5d39bb6
--- /dev/null
+++ b/gerber/render/theme.py
@@ -0,0 +1,50 @@
+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# Copyright 2013-2014 Paulo Henrique Silva <ph.silva@gmail.com>
+
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+
+#     http://www.apache.org/licenses/LICENSE-2.0
+
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+
+COLORS = {
+    'black': (0.0, 0.0, 0.0),
+    'white': (1.0, 1.0, 1.0),
+    'fr-4': (0.702, 0.655, 0.192),
+    'green soldermask': (0.0, 0.612, 0.396),
+    'blue soldermask': (0.059, 0.478, 0.651),
+    'red soldermask': (0.968, 0.169, 0.165),
+    'black soldermask': (0.298, 0.275, 0.282),
+    'enig copper': (0.780, 0.588, 0.286),
+    'hasl copper': (0.871, 0.851, 0.839)
+}
+
+
+class RenderSettings(object):
+    def __init__(self, color, alpha=1.0, invert=False):
+        self.color = color
+        self.alpha = alpha
+        self.invert = False
+
+
+class Theme(object):
+    def __init__(self, **kwargs):
+        self.background = kwargs.get('background', RenderSettings(COLORS['black'], 0.0))
+        self.topsilk = kwargs.get('topsilk', RenderSettings(COLORS['white']))
+        self.topsilk = kwargs.get('bottomsilk', RenderSettings(COLORS['white']))
+        self.topmask = kwargs.get('topmask', RenderSettings(COLORS['green soldermask'], 0.8, True))
+        self.topmask = kwargs.get('topmask', RenderSettings(COLORS['green soldermask'], 0.8, True))
+        self.top = kwargs.get('top', RenderSettings(COLORS['hasl copper']))
+        self.bottom = kwargs.get('top', RenderSettings(COLORS['hasl copper']))
+        self.drill = kwargs.get('drill', self.background)
+
+