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#
# Copyright (C) 2000-2005 by Yasushi Saito (yasushi.saito@gmail.com)
#
# Jockey 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, or (at your option) any
# later version.
#
# Jockey 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.
#
import coord
import math
import pychart_util
class T(coord.T):
def get_canvas_pos(self, size, val, min, max):
return size * (val - min) / float(max - min)
def get_tics(self, min, max, interval):
v = []
x = min
while x <= max:
v.append(x)
x += interval
return v
def get_min_max(self, dmin, dmax, interval):
if not interval:
if dmax == dmin:
interval = 10
else:
interval = 10 ** (float(int(math.log(dmax-dmin)/math.log(10))))
dmin = min(dmin, pychart_util.round_down(dmin, interval))
dmax = max(dmax, pychart_util.round_up(dmax, interval) + interval/2.0)
return dmin, dmax, interval
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