#!/usr/bin/python
import sys
#=============================================================================
#
#  Copyright (c) Kitware, Inc.
#  All rights reserved.
#  See LICENSE.txt for details.
#
#  This software is distributed WITHOUT ANY WARRANTY; without even
#  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
#  PURPOSE.  See the above copyright notice for more information.
#
#=============================================================================
import smtk
if smtk.wrappingProtocol() == 'pybind11':
    import smtk.bridge.polygon
    import smtk.io
from smtk.simple import *
import smtk.testing


class TestPolygonCreation(smtk.testing.TestCase):

    def setUp(self):
        self.writeJSON = False
        self.mgr = smtk.model.Manager.create()
        sess = self.mgr.createSession('polygon')
        brg = sess.session()
        print sess
        print brg
        sess.assignDefaultName()
        SetActiveSession(sess)
        print '\n\n%s: type "%s" %s %s' % \
            (sess.name(), brg.name(), sess.flagSummary(0), brg.sessionId())
        print '  Site: %s' % (sess.site() or 'local')

        # We could evaluate the session tag as JSON, but most of
        # the information is available through methods above that
        # we needed to test:
        sessiontag = sess.tag()
        print '\n'

        #opnames = sess.operatorNames()
        # print opnames

    def checkModel(self, mod, origin, x_axis, y_axis, normal, feature_size, model_scale):

        self.assertEqual(mod.floatProperty('origin'), origin, 'Bad origin')
        [self.assertAlmostEqual(mod.floatProperty(
            'x axis')[i], x_axis[i], 'Bad x axis') for i in range(3)]
        self.assertEqual(mod.floatProperty('y axis'), y_axis, 'Bad y axis')
        self.assertEqual(mod.floatProperty('normal'), normal, 'Bad normal')
        self.assertEqual(mod.floatProperty('feature size'), [feature_size, ],
                         'Bad feature size {:.3g}'.format(*mod.floatProperty('feature size')))
        print 'Mod scale ', mod.floatProperty('model scale')[0], int(model_scale / feature_size), mod.floatProperty('model scale')[0] / int(model_scale / feature_size)
        self.assertEqual(int(mod.floatProperty('model scale')[0]), int(model_scale / feature_size),
                         'Bad model scale {:1}'.format(*mod.floatProperty('model scale')))

        # print smtk.io.SaveJSON.fromModelManager(self.mgr,
        # smtk.io.JSON_DEFAULT)

        # Print a summary of the model:
        print 'Model ', mod.entity()
        print '  x axis  ', ('  {:.3g}' * 3).format(*mod.floatProperty('x axis'))
        print '  y axis  ', ('  {:.3g}' * 3).format(*mod.floatProperty('y axis'))
        print '  normal  ', ('  {:.3g}' * 3).format(*mod.floatProperty('normal'))
        print '  feature size  {:14.3g}'.format(mod.floatProperty('feature size')[0])
        print '  model scale   {:14f}'.format(mod.floatProperty('model scale')[0])

        # Create vertices and test that they are correct
        # NB: 2.000000005 is chosen below since it is within 1e-6/231000 of 2.0
        #     and thus should result in two identical points for all of the models
        #     in testCreation().
        testVerts = [[1, 1], [2, 1], [2, 2, 0],
                     [1, 2], [2.00000000000001, 2, 0]]
        vlist = CreateVertices(testVerts, mod)
        print '  Created vertices\n   ', '\n    '.join([x.name() for x in vlist])

        self.assertEqual(len(vlist), 5, 'Expected 5 model vertices reported.')
        for vi in range(len(testVerts)):
            vert = vlist[vi]
            vx = smtk.model.Vertex(vert).coordinates()
            print '  {name} {x:.5f} {y:.5f} {z:.5f}'.format(
                name=vert.name(), x=vx[0], y=vx[1], z=vx[2])
            [self.assertAlmostEqual(vx[i], testVerts[vi][i],
                                    msg='Bad vertex {vi} coordinate {i}'.format(vi=vi, i=i))
             for i in range(2)]
        self.assertEqual(vlist[2], vlist[4],
                         'Expected vertices with nearly-identical coordinates to be equivalent.')

        # Test a simple case: a non-periodic edge of one segment
        # whose ends must be promoted to model vertices. Note that
        # the edge goes from right to left, so we check that the
        # endpoints are ordered properly.
        openEdgeTestVerts = [[4, 3.5], [3, 3.5]]
        elist = CreateEdge(openEdgeTestVerts, model=mod)
        edge = smtk.model.Edge(elist)
        self.assertIsNotNone(edge, 'Expected a single edge.')
        self.assertEqual(len(edge.vertices()), 2,
                         'Expected two vertices bounding edge.')
        # NB. We cannot test direction of edge using order of edge.vertices() because
        #     they will be ordered by UUID, not parameter value.
        #     Should we start creating edge and vertex uses, plus "vertex chains",
        #     we can then use the SMTK API to properly fetch edge direction. But
        #     arguably, these records should not exist until edges are actually used
        #     by a higher-dimensional entity.

        # Test non-periodic edge of multiple segments whose
        # ends must be promoted to model vertices. Note that
        # the final segment has reversed order relative to
        # boost.polygon's left-right, bottom-top order, so we
        # are verifying that endpoints are computed correctly.
        # This prevents an observed regression.
        openEdgeTestVerts = [[3, 4], [3, 5], [
            4, 5], [4, 4],  [0, 1.5], [1, 2.5]]
        openEdgeTestOffsets = [0, 4]
        elist = CreateEdge(openEdgeTestVerts,
                           offsets=openEdgeTestOffsets, model=mod)

        # Test multiple edge insertion.
        # Test invalid edge connectivity.
        # Test self-intersecting edges.
        # Test periodic edges with non-model-vertex at first point.
        edgeTestVerts = [[0, 0], [1, 1], [0, 1], [1, 0],   [
            3, 0], [3, 3], [4, 3], [2, 0], [3, 0], [10, 10]]
        edgeTestOffsets = [0, 4, 9, 9, 12]  # Only first 2 edges are valid
        elist = CreateEdge(edgeTestVerts, offsets=edgeTestOffsets, model=mod)
        # Make sure that warnings are generated for invalid edge offsets.
        res = GetLastResult()
        logStr = res.findString('log').value(0)
        log = smtk.io.Logger()
        smtk.io.LoadJSON.ofLog(logStr, log)
        print log.convertToString()
        self.assertEqual(
            log.numberOfRecords(), 4,
            'Expected 4 messages due to 3 invalid offsets, got\n' + log.convertToString())
        # print elist

        # Test creation of periodic edge with no model vertices.
        # Verify that no model vertices are created.
        periodicEdgeVerts = [[0, 4], [1, 4], [1, 5], [0, 5], [0, 4]]
        elist = CreateEdge(periodicEdgeVerts, model=mod)

        # Test creation of a second periodic edge with no model vertices
        # but which shares a point with the previous edge.
        # Verify that no model vertices are created.
        # However, if the two edges are used as holes for a containing face
        # or unioned, then the shared point should become a model vertex.
        periodicEdgeVerts = [[1, 3], [2, 3], [2, 4], [1, 4], [1, 3]]
        elist = CreateEdge(periodicEdgeVerts, model=mod)
        edge = smtk.model.Edge(elist)
        self.assertIsNotNone(edge, 'Expected a single edge.')
        self.assertEqual(edge.vertices(), [],
                         'Expected no model vertices bounding edge.')

        arf = SplitEdge(elist, [2, 4])

    def testCreation(self):
        mod = CreateModel()
        self.checkModel(mod, [0, 0, 0], [1, 0, 0], [
                        0, 1, 0], [0, 0, 1], 1e-6, 231)

        mod = CreateModel(x_axis=[1, 0, 0], y_axis=[
                          0, 1, 0], model_scale=231000)
        self.checkModel(mod, [0, 0, 0], [1, 0, 0], [
                        0, 1, 0], [0, 0, 1], 1, 231000)

        mod = CreateModel(x_axis=[1, 0, 0], y_axis=[
                          0, 1, 0], feature_size=1e-8)
        self.checkModel(mod, [0, 0, 0], [1, 0, 0], [
                        0, 1, 0], [0, 0, 1], 1e-8, 231)

        mod = CreateModel(x_axis=[1, 0, 0], normal=[
                          0, 0, 1], feature_size=1e-6)
        self.checkModel(mod, [0, 0, 0], [1, 0, 0], [
                        0, 1, 0], [0, 0, 1], 1e-6, 231)

        mod = CreateModel(x_axis=[1, 0, 0], normal=[
                          0, 0, 1], model_scale=1182720)
        self.checkModel(mod, [0, 0, 0], [1, 0, 0], [
                        0, 1, 0], [0, 0, 1], 1, 1182720)

        if self.haveVTK() and self.haveVTKExtension():

            self.startRenderTest()

            mod = smtk.model.Model(mod)
            [mod.addCell(x) for x in self.mgr.findEntitiesOfType(
                int(smtk.model.CELL_ENTITY), False)]
            ms, vs, mp, ac = self.addModelToScene(mod)
            ac.GetProperty().SetLineWidth(2)
            ac.GetProperty().SetPointSize(6)

            cam = self.renderer.GetActiveCamera()
            cam.SetFocalPoint(5, 5, 0)
            cam.SetPosition(5, 5, 5)
            cam.SetViewUp(0, 1, 0)
            self.renderer.ResetCamera()
            self.renderWindow.Render()
            # Skip the image match if we don't have a baseline.
            # This allows the test to succeed even on systems without the test
            # data but requires a match on systems with the test data.
            self.assertImageMatchIfFileExists(
                ['baseline', 'smtk', 'polygon', 'creation.png'])
            self.interact()

        else:
            self.assertFalse(
                self.haveVTKExtension(),
                'Could not import vtk. Python path is {pp}'.format(pp=sys.path))


if __name__ == '__main__':
    smtk.testing.process_arguments()
    smtk.testing.main()
