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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 testPickVolume(self):
+ """Test picking of volume CutPlane and Isosurface items"""
+ for dtype in (numpy.float32, numpy.complex64):
+ with self.subTest(dtype=dtype):
+ refData = numpy.arange(10**3, dtype=dtype).reshape(10, 10, 10)
+ volume = self.widget.addVolume(refData)
+ if dtype == numpy.complex64:
+ volume.setComplexMode(volume.ComplexMode.REAL)
+ refData = numpy.real(refData)
+ self.widget.resetZoom('front')
+
+ cutplane = volume.getCutPlanes()[0]
+ if dtype == numpy.complex64:
+ cutplane.setComplexMode(volume.ComplexMode.REAL)
+ 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,
+ refData[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,
+ refData[picking[1].getIndices()]))
+
+ # Picking outside data
+ picking = list(self.widget.pickItems(1, 1))
+ self.assertEqual(len(picking), 0)
+
+ self.widget.clearItems()
+
+ 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)
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