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# Copyright (C) 2003 by Intevation GmbH |
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# Authors: |
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# Bernhard Herzog <[email protected]> |
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# |
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# This program is free software under the GPL (>=v2) |
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# Read the file COPYING coming with the software for details. |
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"""Test Thuban.UI.hittest""" |
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|
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__version__ = "$Revision$" |
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# $Source$ |
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# $Id$ |
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|
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import unittest |
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|
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import support |
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support.initthuban() |
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|
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from Thuban.UI.hittest import line_hit, polygon_hit, arc_hit |
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|
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|
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class TestLineHit(unittest.TestCase): |
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|
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def test_inside(self): |
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"""Test line_hit with point that would be on the 'inside' |
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|
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Inside here means that the point is to the right of the line but |
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not so close that the line itself is hit. |
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""" |
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self.assertEquals(line_hit(0, 0, 10, 10, 20, 5), 1) |
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self.assertEquals(line_hit(10, 10, 0, 0, 20, 5), 1) |
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self.assertEquals(line_hit(10, 10, 0, 0, 8, 5), 1) |
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|
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def test_outside(self): |
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"""Test line_hit with point that would be on the 'outside' |
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|
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Inside here means that the point is to the left of the line but |
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not so close that the line itself is hit. |
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""" |
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self.assertEquals(line_hit(0, 0, 10, 10, -10, 5), 0) |
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self.assertEquals(line_hit(10, 10, 0, 0, -10, 5), 0) |
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self.assertEquals(line_hit(10, 10, 0, 0, 2, 5), 0) |
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|
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def test_on_line(self): |
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"""Test line_hit with point that would be on or near the line""" |
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self.assertEquals(line_hit(0, 0, 10, -10, 5, -5), -1) |
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self.assertEquals(line_hit(0, 0, 10, -10, 10, -10), -1) |
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self.assertEquals(line_hit(0, 0, 10, -10, 5, -6), -1) |
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|
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def test_horizontal_line(self): |
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"""Test line_hit with a horizontal line |
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|
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For a horizonal line, line_hit will never return 1. It will |
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return -1 though for points close to or on the line. |
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""" |
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self.assertEquals(line_hit(10, 10, 10, 10, -10, 10), 0) |
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self.assertEquals(line_hit(10, 10, 15, 10, 20, 10), 0) |
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self.assertEquals(line_hit(10, 10, 15, 10, 12, 10), -1) |
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|
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# Hits near the line will also be counted as line hits. |
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self.assertEquals(line_hit(10, 10, 15, 10, 12, 11), -1) |
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self.assertEquals(line_hit(10, 10, 15, 10, 12, 9), -1) |
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|
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def test_upper_ignored(self): |
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"""Test line_hit with a point whose ray would hit the upper end point |
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|
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The upper end point is not hit to avoid problems with hit |
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testing for polygons. |
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""" |
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self.assertEquals(line_hit(-100, 20, 10, -10, 1000, 20), 0) |
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self.assertEquals(line_hit(10, -10, -100, 20, 1000, 20), 0) |
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|
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|
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class TestPolygonHit(unittest.TestCase): |
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|
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def test_simple_inside(self): |
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"""Test polygon_hit with simple polygon and inside point""" |
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self.assertEquals(polygon_hit([[(0, 0), (10, 0), (10, 10), (0, 10), |
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(0, 0)]], 5, 5), |
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1) |
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|
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def test_simple_outside(self): |
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"""Test polygon_hit with simple polygon and outside point""" |
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self.assertEquals(polygon_hit([[(0, 0), (10, 0), (10, 10), (0, 10), |
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(0, 0)]], 20, 5), |
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0) |
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self.assertEquals(polygon_hit([[(0, 0), (10, 0), (10, 10), (0, 10), |
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(0, 0)]], 20, 100), |
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0) |
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|
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self.assertEquals(polygon_hit([[(0, 0), (10, 0), (10, 10), (0, 10), |
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(0, 0)]], 20, -10), |
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0) |
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|
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def test_holes_outside(self): |
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"""Test polygon_hit with polygon with holes and outside point""" |
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points = [[(0, 0), (100, 0), (100, 100), (0, 100), (0, 0)], |
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[(20, 20), (80, 20), (80, 80), (20, 80), (20, 20)]] |
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self.assertEquals(polygon_hit(points, 50, 50), 0) |
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self.assertEquals(polygon_hit(points, 130, 50), 0) |
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|
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def test_holes_inside(self): |
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"""Test polygon_hit with polygon with holes and inside point""" |
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points = [[(0, 0), (100, 0), (100, 100), (0, 100), (0, 0)], |
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[(20, 20), (80, 20), (80, 80), (20, 80), (20, 20)]] |
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self.assertEquals(polygon_hit(points, 50, 90), 1) |
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self.assertEquals(polygon_hit(points, 90, 50), 1) |
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self.assertEquals(polygon_hit(points, 10, 50), 1) |
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|
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def test_vertex(self): |
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"""Test polygon_hit with simple polygon and point whose ray hits corner |
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""" |
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points = [[(-10, -5), (-10, 20), (10, 50), (10, 0), (-10, -5)]] |
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self.assertEquals(polygon_hit(points, 0, 20), 1) |
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|
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def test_border(self): |
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"""Test polygon_hit with simple polygon and point on/near border""" |
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points = [[(-10, -5), (-10, 20), (10, 50), (10, 0), (-10, -5)]] |
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self.assertEquals(polygon_hit(points, -9, 20), -1) |
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self.assertEquals(polygon_hit(points, 0, -2), -1) |
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self.assertEquals(polygon_hit(points, 0, -4), -1) |
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|
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|
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class TestArcHit(unittest.TestCase): |
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|
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def test_simple_hit(self): |
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"""Test arc_hit with simple arc and point on/near arc""" |
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self.assertEquals(arc_hit([[(0, 0), (10, 0), (10, 10), (20, 20)]], |
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5, 0), 1) |
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self.assertEquals(arc_hit([[(0, 0), (10, 0), (10, 10), (20, 20)]], |
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15, 16), 1) |
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|
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def test_simple_not_hit(self): |
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"""Test arc_hit with simple arc and point not on arc""" |
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self.assertEquals(arc_hit([[(0, 0), (10, 0), (10, 10), (20, 20)]], |
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5, 100), 0) |
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self.assertEquals(arc_hit([[(0, 0), (10, 0), (10, 10), (20, 20)]], |
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13, 7), 0) |
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|
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def test_corner(self): |
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"""Test arc_hit with point on/near arc's corner""" |
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self.assertEquals(arc_hit([[(0, 0), (10, 0), (10, 10), (20, 20)]], |
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11, 10), 1) |
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self.assertEquals(arc_hit([[(0, 0), (10, 0), (10, 10), (20, 20)]], |
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15, 10), 0) |
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|
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if __name__ == "__main__": |
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support.run_tests() |
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