2 Copyright 2008, 2009 Free Software Foundation, Inc.
3 This file is part of GNU Radio
5 GNU Radio Companion is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License
7 as published by the Free Software Foundation; either version 2
8 of the License, or (at your option) any later version.
10 GNU Radio Companion is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
20 from Constants import POSSIBLE_ROTATIONS
21 from Cheetah.Template import Template
24 def get_rotated_coordinate(coor, rotation):
26 Rotate the coordinate by the given rotation.
27 @param coor the coordinate x, y tuple
28 @param rotation the angle in degrees
29 @return the rotated coordinates
31 #handles negative angles
32 rotation = (rotation + 360)%360
33 assert rotation in POSSIBLE_ROTATIONS
34 #determine the number of degrees to rotate
42 return (x*cos_r + y*sin_r, -x*sin_r + y*cos_r)
44 def get_angle_from_coordinates((x1,y1), (x2,y2)):
46 Given two points, calculate the vector direction from point1 to point2, directions are multiples of 90 degrees.
47 @param (x1,y1) the coordinate of point 1
48 @param (x2,y2) the coordinate of point 2
49 @return the direction in degrees
55 if y2 > y1: return 270
58 def parse_template(tmpl_str, **kwargs):
60 Parse the template string with the given args.
61 Pass in the xml encode method for pango escape chars.
62 @param tmpl_str the template as a string
63 @return a string of the parsed template
65 kwargs['encode'] = gobject.markup_escape_text
66 return str(Template(tmpl_str, kwargs))