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# coding: utf-8
# /*##########################################################################
#
# Copyright (c) 2018-2019 European Synchrotron Radiation Facility
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
# ###########################################################################*/
"""Test SceneWidget picking feature"""
__authors__ = ["T. Vincent"]
__license__ = "MIT"
__date__ = "03/10/2018"
import unittest
import numpy
from silx.utils.testutils import ParametricTestCase
from silx.gui.utils.testutils import TestCaseQt
from silx.gui import qt
from silx.gui.plot3d.SceneWidget import SceneWidget, items
class TestSceneWidgetPicking(TestCaseQt, ParametricTestCase):
"""Tests SceneWidget picking feature"""
def setUp(self):
super(TestSceneWidgetPicking, self).setUp()
self.widget = SceneWidget()
self.widget.resize(300, 300)
self.widget.show()
# self.qWaitForWindowExposed(self.widget)
def tearDown(self):
self.qapp.processEvents()
self.widget.setAttribute(qt.Qt.WA_DeleteOnClose)
self.widget.close()
del self.widget
super(TestSceneWidgetPicking, self).tearDown()
def _widgetCenter(self):
"""Returns widget center"""
size = self.widget.size()
return size.width() // 2, size.height() // 2
def testPickImage(self):
"""Test picking of ImageData and ImageRgba items"""
imageData = items.ImageData()
imageData.setData(numpy.arange(100).reshape(10, 10))
imageRgba = items.ImageRgba()
imageRgba.setData(
numpy.arange(300, dtype=numpy.uint8).reshape(10, 10, 3))
for item in (imageData, imageRgba):
with self.subTest(item=item.__class__.__name__):
# Add item
self.widget.clearItems()
self.widget.addItem(item)
self.widget.resetZoom('front')
self.qapp.processEvents()
# Picking on data (at widget center)
picking = list(self.widget.pickItems(*self._widgetCenter()))
self.assertEqual(len(picking), 1)
self.assertIs(picking[0].getItem(), item)
self.assertEqual(picking[0].getPositions('ndc').shape, (1, 3))
data = picking[0].getData()
self.assertEqual(len(data), 1)
self.assertTrue(numpy.array_equal(
data,
item.getData()[picking[0].getIndices()]))
# Picking outside data
picking = list(self.widget.pickItems(1, 1))
self.assertEqual(len(picking), 0)
def testPickScatter(self):
"""Test picking of Scatter2D and Scatter3D items"""
data = numpy.arange(100)
scatter2d = items.Scatter2D()
scatter2d.setData(x=data, y=data, value=data)
scatter3d = items.Scatter3D()
scatter3d.setData(x=data, y=data, z=data, value=data)
for item in (scatter2d, scatter3d):
with self.subTest(item=item.__class__.__name__):
# Add item
self.widget.clearItems()
self.widget.addItem(item)
self.widget.resetZoom('front')
self.qapp.processEvents()
# Picking on data (at widget center)
picking = list(self.widget.pickItems(*self._widgetCenter()))
self.assertEqual(len(picking), 1)
self.assertIs(picking[0].getItem(), item)
nbPos = len(picking[0].getPositions('ndc'))
data = picking[0].getData()
self.assertEqual(nbPos, len(data))
self.assertTrue(numpy.array_equal(
data,
item.getValueData()[picking[0].getIndices()]))
# Picking outside data
picking = list(self.widget.pickItems(1, 1))
self.assertEqual(len(picking), 0)
def testPickScalarField3D(self):
"""Test picking of volume CutPlane and Isosurface items"""
volume = self.widget.add3DScalarField(
numpy.arange(10**3, dtype=numpy.float32).reshape(10, 10, 10))
self.widget.resetZoom('front')
cutplane = volume.getCutPlanes()[0]
cutplane.getColormap().setVRange(0, 100)
cutplane.setNormal((0, 0, 1))
# Picking on data without anything displayed
cutplane.setVisible(False)
picking = list(self.widget.pickItems(*self._widgetCenter()))
self.assertEqual(len(picking), 0)
# Picking on data with the cut plane
cutplane.setVisible(True)
picking = list(self.widget.pickItems(*self._widgetCenter()))
self.assertEqual(len(picking), 1)
self.assertIs(picking[0].getItem(), cutplane)
data = picking[0].getData()
self.assertEqual(len(data), 1)
self.assertEqual(picking[0].getPositions().shape, (1, 3))
self.assertTrue(numpy.array_equal(
data,
volume.getData(copy=False)[picking[0].getIndices()]))
# Picking on data with an isosurface
isosurface = volume.addIsosurface(level=500, color=(1., 0., 0., .5))
picking = list(self.widget.pickItems(*self._widgetCenter()))
self.assertEqual(len(picking), 2)
self.assertIs(picking[0].getItem(), cutplane)
self.assertIs(picking[1].getItem(), isosurface)
self.assertEqual(picking[1].getPositions().shape, (1, 3))
data = picking[1].getData()
self.assertEqual(len(data), 1)
self.assertTrue(numpy.array_equal(
data,
volume.getData(copy=False)[picking[1].getIndices()]))
# Picking outside data
picking = list(self.widget.pickItems(1, 1))
self.assertEqual(len(picking), 0)
def testPickMesh(self):
"""Test picking of Mesh items"""
triangles = items.Mesh()
triangles.setData(
position=((0, 0, 0), (1, 0, 0), (1, 1, 0),
(0, 0, 0), (1, 1, 0), (0, 1, 0)),
color=(1, 0, 0, 1),
mode='triangles')
triangleStrip = items.Mesh()
triangleStrip.setData(
position=(((1, 0, 0), (0, 0, 0), (1, 1, 0), (0, 1, 0))),
color=(0, 1, 0, 1),
mode='triangle_strip')
triangleFan = items.Mesh()
triangleFan.setData(
position=((0, 0, 0), (1, 0, 0), (1, 1, 0), (0, 1, 0)),
color=(0, 0, 1, 1),
mode='fan')
for item in (triangles, triangleStrip, triangleFan):
with self.subTest(mode=item.getDrawMode()):
# Add item
self.widget.clearItems()
self.widget.addItem(item)
self.widget.resetZoom('front')
self.qapp.processEvents()
# Picking on data (at widget center)
picking = list(self.widget.pickItems(*self._widgetCenter()))
self.assertEqual(len(picking), 1)
self.assertIs(picking[0].getItem(), item)
nbPos = len(picking[0].getPositions())
data = picking[0].getData()
self.assertEqual(nbPos, len(data))
self.assertTrue(numpy.array_equal(
data,
item.getPositionData()[picking[0].getIndices()]))
# Picking outside data
picking = list(self.widget.pickItems(1, 1))
self.assertEqual(len(picking), 0)
def testPickMeshWithIndices(self):
"""Test picking of Mesh items defined by indices"""
triangles = items.Mesh()
triangles.setData(
position=((0, 0, 0), (1, 0, 0), (0, 1, 0), (1, 1, 0)),
color=(1, 0, 0, 1),
indices=numpy.array( # dummy triangles and square
(0, 0, 1, 0, 1, 2, 1, 2, 3), dtype=numpy.uint8),
mode='triangles')
triangleStrip = items.Mesh()
triangleStrip.setData(
position=((0, 0, 0), (1, 0, 0), (0, 1, 0), (1, 1, 0)),
color=(0, 1, 0, 1),
indices=numpy.array( # dummy triangles and square
(1, 0, 0, 1, 2, 3), dtype=numpy.uint8),
mode='triangle_strip')
triangleFan = items.Mesh()
triangleFan.setData(
position=((0, 0, 0), (1, 0, 0), (0, 1, 0), (1, 1, 0)),
color=(0, 0, 1, 1),
indices=numpy.array( # dummy triangle, square, dummy
(1, 1, 0, 2, 3, 3), dtype=numpy.uint8),
mode='fan')
for item in (triangles, triangleStrip, triangleFan):
with self.subTest(mode=item.getDrawMode()):
# Add item
self.widget.clearItems()
self.widget.addItem(item)
self.widget.resetZoom('front')
self.qapp.processEvents()
# Picking on data (at widget center)
picking = list(self.widget.pickItems(*self._widgetCenter()))
self.assertEqual(len(picking), 1)
self.assertIs(picking[0].getItem(), item)
nbPos = len(picking[0].getPositions())
data = picking[0].getData()
self.assertEqual(nbPos, len(data))
self.assertTrue(numpy.array_equal(
data,
item.getPositionData()[picking[0].getIndices()]))
# Picking outside data
picking = list(self.widget.pickItems(1, 1))
self.assertEqual(len(picking), 0)
def testPickCylindricalMesh(self):
"""Test picking of Box, Cylinder and Hexagon items"""
positions = numpy.array(((0., 0., 0.), (1., 1., 0.), (2., 2., 0.)))
box = items.Box()
box.setData(position=positions)
cylinder = items.Cylinder()
cylinder.setData(position=positions)
hexagon = items.Hexagon()
hexagon.setData(position=positions)
for item in (box, cylinder, hexagon):
with self.subTest(item=item.__class__.__name__):
# Add item
self.widget.clearItems()
self.widget.addItem(item)
self.widget.resetZoom('front')
self.qapp.processEvents()
# Picking on data (at widget center)
picking = list(self.widget.pickItems(*self._widgetCenter()))
self.assertEqual(len(picking), 1)
self.assertIs(picking[0].getItem(), item)
nbPos = len(picking[0].getPositions())
data = picking[0].getData()
print(item.__class__.__name__, [positions[1]], data)
self.assertTrue(numpy.all(numpy.equal(positions[1], data)))
self.assertEqual(nbPos, len(data))
self.assertTrue(numpy.array_equal(
data,
item.getPosition()[picking[0].getIndices()]))
# Picking outside data
picking = list(self.widget.pickItems(1, 1))
self.assertEqual(len(picking), 0)
def suite():
testsuite = unittest.TestSuite()
testsuite.addTest(
unittest.defaultTestLoader.loadTestsFromTestCase(
TestSceneWidgetPicking))
return testsuite
if __name__ == '__main__':
unittest.main(defaultTest='suite')
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