| from fontTools.pens.t2CharStringPen import T2CharStringPen |
| import unittest |
| |
| |
| class T2CharStringPenTest(unittest.TestCase): |
| |
| def __init__(self, methodName): |
| unittest.TestCase.__init__(self, methodName) |
| |
| def assertAlmostEqualProgram(self, expected, actual): |
| self.assertEqual(len(expected), len(actual)) |
| for i1, i2 in zip(expected, actual): |
| if isinstance(i1, str): |
| self.assertIsInstance(i2, str) |
| self.assertEqual(i1, i2) |
| else: |
| self.assertAlmostEqual(i1, i2) |
| |
| def test_draw_h_v_lines(self): |
| pen = T2CharStringPen(100, {}) |
| pen.moveTo((0, 0)) |
| pen.lineTo((10, 0)) |
| pen.lineTo((10, 10)) |
| pen.lineTo((0, 10)) |
| pen.closePath() # no-op |
| pen.moveTo((10, 10)) |
| pen.lineTo((10, 20)) |
| pen.lineTo((0, 20)) |
| pen.lineTo((0, 10)) |
| pen.closePath() |
| charstring = pen.getCharString(None, None) |
| |
| self.assertEqual( |
| [100, |
| 0, 'hmoveto', |
| 10, 10, -10, 'hlineto', |
| 10, 'hmoveto', |
| 10, -10, -10, 'vlineto', |
| 'endchar'], |
| charstring.program) |
| |
| def test_draw_lines(self): |
| pen = T2CharStringPen(100, {}) |
| pen.moveTo((5, 5)) |
| pen.lineTo((25, 15)) |
| pen.lineTo((35, 35)) |
| pen.lineTo((15, 25)) |
| pen.closePath() # no-op |
| charstring = pen.getCharString(None, None) |
| |
| self.assertEqual( |
| [100, |
| 5, 5, 'rmoveto', |
| 20, 10, 10, 20, -20, -10, 'rlineto', |
| 'endchar'], |
| charstring.program) |
| |
| def test_draw_h_v_curves(self): |
| pen = T2CharStringPen(100, {}) |
| pen.moveTo((0, 0)) |
| pen.curveTo((10, 0), (20, 10), (20, 20)) |
| pen.curveTo((20, 30), (10, 40), (0, 40)) |
| pen.endPath() # no-op |
| charstring = pen.getCharString(None, None) |
| |
| self.assertEqual( |
| [100, |
| 0, 'hmoveto', |
| 10, 10, 10, 10, 10, -10, 10, -10, 'hvcurveto', |
| 'endchar'], |
| charstring.program) |
| |
| def test_draw_curves(self): |
| pen = T2CharStringPen(100, {}) |
| pen.moveTo((95, 25)) |
| pen.curveTo((115, 44), (115, 76), (95, 95)) |
| pen.curveTo((76, 114), (44, 115), (25, 95)) |
| pen.endPath() # no-op |
| charstring = pen.getCharString(None, None) |
| |
| self.assertEqual( |
| [100, |
| 95, 25, 'rmoveto', |
| 20, 19, 0, 32, -20, 19, -19, 19, -32, 1, -19, -20, 'rrcurveto', |
| 'endchar'], |
| charstring.program) |
| |
| def test_draw_more_curves(self): |
| pen = T2CharStringPen(100, {}) |
| pen.moveTo((10, 10)) |
| pen.curveTo((20, 10), (50, 10), (60, 10)) |
| pen.curveTo((60, 20), (60, 50), (60, 60)) |
| pen.curveTo((50, 50), (40, 60), (30, 60)) |
| pen.curveTo((40, 50), (30, 40), (30, 30)) |
| pen.curveTo((30, 25), (25, 19), (20, 20)) |
| pen.curveTo((15, 20), (9, 25), (10, 30)) |
| pen.curveTo((7, 25), (6, 15), (10, 10)) |
| pen.endPath() # no-op |
| charstring = pen.getCharString(None, None) |
| |
| self.assertEqual( |
| [100, |
| 10, 10, 'rmoveto', |
| 10, 30, 0, 10, 'hhcurveto', |
| 10, 0, 30, 10, 'vvcurveto', |
| -10, -10, -10, 10, -10, 'hhcurveto', |
| 10, -10, -10, -10, -10, 'vvcurveto', |
| -5, -5, -6, -5, 1, 'vhcurveto', |
| -5, -6, 5, 5, 1, 'hvcurveto', |
| -3, -5, -1, -10, 4, -5, 'rrcurveto', |
| 'endchar'], |
| charstring.program) |
| |
| def test_default_width(self): |
| pen = T2CharStringPen(None, {}) |
| charstring = pen.getCharString(None, None) |
| self.assertEqual(['endchar'], charstring.program) |
| |
| def test_no_round(self): |
| pen = T2CharStringPen(100.1, {}, roundTolerance=0.0) |
| pen.moveTo((0, 0)) |
| pen.curveTo((10.1, 0.1), (19.9, 9.9), (20.49, 20.49)) |
| pen.curveTo((20.49, 30.49), (9.9, 39.9), (0.1, 40.1)) |
| pen.closePath() |
| charstring = pen.getCharString(None, None) |
| |
| self.assertAlmostEqualProgram( |
| [100, # we always round the advance width |
| 0, 'hmoveto', |
| 10.1, 0.1, 9.8, 9.8, 0.59, 10.59, 'rrcurveto', |
| 10, -10.59, 9.41, -9.8, 0.2, 'vhcurveto', |
| 'endchar'], |
| charstring.program) |
| |
| def test_round_all(self): |
| pen = T2CharStringPen(100.1, {}, roundTolerance=0.5) |
| pen.moveTo((0, 0)) |
| pen.curveTo((10.1, 0.1), (19.9, 9.9), (20.49, 20.49)) |
| pen.curveTo((20.49, 30.5), (9.9, 39.9), (0.1, 40.1)) |
| pen.closePath() |
| charstring = pen.getCharString(None, None) |
| |
| self.assertEqual( |
| [100, |
| 0, 'hmoveto', |
| 10, 10, 10, 10, 11, -10, 9, -10, 'hvcurveto', |
| 'endchar'], |
| charstring.program) |
| |
| def test_round_some(self): |
| pen = T2CharStringPen(100, {}, roundTolerance=0.2) |
| pen.moveTo((0, 0)) |
| # the following two are rounded as within the tolerance |
| pen.lineTo((10.1, 0.1)) |
| pen.lineTo((19.9, 9.9)) |
| # this one is not rounded as it exceeds the tolerance |
| pen.lineTo((20.49, 20.49)) |
| pen.closePath() |
| charstring = pen.getCharString(None, None) |
| |
| self.assertAlmostEqualProgram( |
| [100, |
| 0, 'hmoveto', |
| 10, 'hlineto', |
| 10, 10, 0.49, 10.49, 'rlineto', |
| 'endchar'], |
| charstring.program) |
| |
| def test_invalid_tolerance(self): |
| self.assertRaisesRegex( |
| ValueError, |
| "Rounding tolerance must be positive", |
| T2CharStringPen, None, {}, roundTolerance=-0.1) |
| |
| |
| if __name__ == '__main__': |
| import sys |
| sys.exit(unittest.main()) |