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# Author: Suyog Dutt Jain <suyog.jain@aero.iitb.ac.in>
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# Copyright (c) 2009, Enthought, Inc.
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# Standard library imports.
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from common import get_example_data
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# Enthought library imports
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from enthought.mayavi.core.engine import Engine
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from enthought.mayavi.core.null_engine import NullEngine
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from enthought.mayavi.sources.image_reader import ImageReader
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from enthought.mayavi.tests.data_reader_test_base import DataReaderTestBase
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from enthought.mayavi.modules.outline import Outline
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class TestDEMImageReader(DataReaderTestBase):
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def setup_reader(self):
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""""Setup the reader in here. This is called after the engine
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has been created and started. The engine is available as
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self.e. This method is called by setUp().
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# Read a DEM Image file.
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r.initialize(get_example_data('example.dem'))
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self.bounds =(557945.0, 567725.0, 5107991.5, 5121971.5, 682.0, 682.0)
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def check(self, scene, bounds, error = 1.01e-02):
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"""Do the actual testing."""
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src = scene.children[0]
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ot = src.children[0].children[0]
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ot.render() # Flush the pipeline.
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# Check the outline bounds
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self.assertEqual(numpy.allclose(ot.outline_filter.output.bounds,bounds,
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self.assertEqual(src.reader.spatial_resolution, (30.0, 30.0, 1.0))
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self.assertEqual(src.reader.elevation_bounds, (682.0, 2543.0))
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def test_dem_image_data_reader(self):
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"Test if the test fixture works"
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self.check(self.scene, self.bounds)
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def test_save_and_restore(self):
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"""Test if saving a visualization and restoring it works."""
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self.check_saving(self.e, self.scene, self.bounds)
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def test_deepcopied(self):
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"""Test if the MayaVi2 visualization can be deep-copied."""
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############################################################
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# Test if the MayaVi2 visualization can be deep-copied.
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self.check_deepcopying(self.scene, self.bounds)
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class TestMHAImageReader(DataReaderTestBase):
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def setup_reader(self):
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""""Setup the reader in here. This is called after the engine
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has been created and started. The engine is available as
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self.e. This method is called by setUp().
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# Read a Meta Image file.
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r.initialize(get_example_data('foot.mha'))
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self.bounds =(0.0, 255.0, 0.0, 255.0, 0.0, 0.0)
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def check(self, scene, bounds, error = 1.01e-02):
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"""Do the actual testing."""
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src = scene.children[0]
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ot = src.children[0].children[0]
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ot.render() # Flush the pipeline.
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# Check the outline bounds
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self.assertEqual(numpy.allclose(ot.outline_filter.output.bounds,bounds,
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self.assertEqual(numpy.allclose(src.reader.data_spacing,(1., 1., 1.)),True)
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def test_mha_image_data_reader(self):
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"Test if the test fixture works"
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self.check(self.scene, self.bounds)
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def test_save_and_restore(self):
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"""Test if saving a visualization and restoring it works."""
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self.check_saving(self.e, self.scene, self.bounds)
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def test_deepcopied(self):
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"""Test if the MayaVi2 visualization can be deep-copied."""
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############################################################
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# Test if the MayaVi2 visualization can be deep-copied.
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self.check_deepcopying(self.scene, self.bounds)
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if __name__ == '__main__':
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enthought/mayavi/tests/test_image_data_reader.py
