point.py revision 10259
110259SAndrew.Bardsley@arm.com# Copyright (c) 2013 ARM Limited 210259SAndrew.Bardsley@arm.com# All rights reserved 310259SAndrew.Bardsley@arm.com# 410259SAndrew.Bardsley@arm.com# The license below extends only to copyright in the software and shall 510259SAndrew.Bardsley@arm.com# not be construed as granting a license to any other intellectual 610259SAndrew.Bardsley@arm.com# property including but not limited to intellectual property relating 710259SAndrew.Bardsley@arm.com# to a hardware implementation of the functionality of the software 810259SAndrew.Bardsley@arm.com# licensed hereunder. You may use the software subject to the license 910259SAndrew.Bardsley@arm.com# terms below provided that you ensure that this notice is replicated 1010259SAndrew.Bardsley@arm.com# unmodified and in its entirety in all distributions of the software, 1110259SAndrew.Bardsley@arm.com# modified or unmodified, in source code or in binary form. 1210259SAndrew.Bardsley@arm.com# 1310259SAndrew.Bardsley@arm.com# Redistribution and use in source and binary forms, with or without 1410259SAndrew.Bardsley@arm.com# modification, are permitted provided that the following conditions are 1510259SAndrew.Bardsley@arm.com# met: redistributions of source code must retain the above copyright 1610259SAndrew.Bardsley@arm.com# notice, this list of conditions and the following disclaimer; 1710259SAndrew.Bardsley@arm.com# redistributions in binary form must reproduce the above copyright 1810259SAndrew.Bardsley@arm.com# notice, this list of conditions and the following disclaimer in the 1910259SAndrew.Bardsley@arm.com# documentation and/or other materials provided with the distribution; 2010259SAndrew.Bardsley@arm.com# neither the name of the copyright holders nor the names of its 2110259SAndrew.Bardsley@arm.com# contributors may be used to endorse or promote products derived from 2210259SAndrew.Bardsley@arm.com# this software without specific prior written permission. 2310259SAndrew.Bardsley@arm.com# 2410259SAndrew.Bardsley@arm.com# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 2510259SAndrew.Bardsley@arm.com# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 2610259SAndrew.Bardsley@arm.com# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 2710259SAndrew.Bardsley@arm.com# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 2810259SAndrew.Bardsley@arm.com# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 2910259SAndrew.Bardsley@arm.com# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 3010259SAndrew.Bardsley@arm.com# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 3110259SAndrew.Bardsley@arm.com# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 3210259SAndrew.Bardsley@arm.com# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3310259SAndrew.Bardsley@arm.com# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 3410259SAndrew.Bardsley@arm.com# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 3510259SAndrew.Bardsley@arm.com# 3610259SAndrew.Bardsley@arm.com# Authors: Andrew Bardsley 3710259SAndrew.Bardsley@arm.com 3810259SAndrew.Bardsley@arm.comclass Point(object): 3910259SAndrew.Bardsley@arm.com """2D point coordinates/size type""" 4010259SAndrew.Bardsley@arm.com def __init__(self, x, y): 4110259SAndrew.Bardsley@arm.com self.x = x 4210259SAndrew.Bardsley@arm.com self.y = y 4310259SAndrew.Bardsley@arm.com 4410259SAndrew.Bardsley@arm.com def __add__(self, rhs): 4510259SAndrew.Bardsley@arm.com return Point(self.x + rhs.x, self.y + rhs.y) 4610259SAndrew.Bardsley@arm.com 4710259SAndrew.Bardsley@arm.com def __sub__(self, rhs): 4810259SAndrew.Bardsley@arm.com return Point(self.x - rhs.x, self.y - rhs.y) 4910259SAndrew.Bardsley@arm.com 5010259SAndrew.Bardsley@arm.com def __mul__(self, rhs): 5110259SAndrew.Bardsley@arm.com return Point(self.x * rhs.x, self.y * rhs.y) 5210259SAndrew.Bardsley@arm.com 5310259SAndrew.Bardsley@arm.com def __div__(self, rhs): 5410259SAndrew.Bardsley@arm.com return Point(float(self.x) / rhs.x, float(self.y) / rhs.y) 5510259SAndrew.Bardsley@arm.com 5610259SAndrew.Bardsley@arm.com def scale(self, factor): 5710259SAndrew.Bardsley@arm.com return Point(self.x * factor, self.y * factor) 5810259SAndrew.Bardsley@arm.com 5910259SAndrew.Bardsley@arm.com def to_pair(self): 6010259SAndrew.Bardsley@arm.com return (self.x, self.y) 6110259SAndrew.Bardsley@arm.com 6210259SAndrew.Bardsley@arm.com def __str__(self): 6310259SAndrew.Bardsley@arm.com return "Point(%f,%f)" % (self.x, self.y) 6410259SAndrew.Bardsley@arm.com 6510259SAndrew.Bardsley@arm.com def __repr__(self): 6610259SAndrew.Bardsley@arm.com return "Point(%f,%f)" % (self.x, self.y) 6710259SAndrew.Bardsley@arm.com 6810259SAndrew.Bardsley@arm.com def is_within_box(self, box): 6910259SAndrew.Bardsley@arm.com """Is this point inside the (centre, size) box box""" 7010259SAndrew.Bardsley@arm.com centre, size = box 7110259SAndrew.Bardsley@arm.com half_size = size.scale(0.5) 7210259SAndrew.Bardsley@arm.com top_left = centre - half_size 7310259SAndrew.Bardsley@arm.com bottom_right = centre + half_size 7410259SAndrew.Bardsley@arm.com return (top_left.x < self.x and 7510259SAndrew.Bardsley@arm.com top_left.y < self.y and 7610259SAndrew.Bardsley@arm.com bottom_right.x > self.x and 7710259SAndrew.Bardsley@arm.com bottom_right.y > self.y) 7810259SAndrew.Bardsley@arm.com 79