Ejemplo n.º 1
0
def add_ligand(tool):
    rows = tool.ligand_table.rowCount()
    if rows != 0:
        rows -= 1
        ligand_name = QTableWidgetItem()
        name = "<click to choose>"
        is_c2 = Qt.Unchecked
        enabled = True
        if rows > 0:
            name = tool.ligand_table.item(rows - 1, 0).text()
            is_c2 = tool.ligand_table.cellWidget(rows - 1, 1).layout().itemAt(0).widget().checkState()
            enabled = tool.ligand_table.cellWidget(rows - 1, 1).layout().itemAt(0).widget().isEnabled()

        ligand_name.setData(Qt.DisplayRole, name)
        tool.ligand_table.setItem(rows, 0, ligand_name)
        
        widget_that_lets_me_horizontally_align_a_checkbox = QWidget()
        widget_layout = QHBoxLayout(widget_that_lets_me_horizontally_align_a_checkbox)
        c2 = QCheckBox()
        c2.setEnabled(enabled)
        c2.setCheckState(is_c2)
        widget_layout.addWidget(c2, 0, Qt.AlignHCenter)
        widget_layout.setContentsMargins(0, 0, 0, 0)
        tool.ligand_table.setCellWidget(
            rows, 1, widget_that_lets_me_horizontally_align_a_checkbox
        )
        
        widget_that_lets_me_horizontally_align_an_icon = QWidget()
        widget_layout = QHBoxLayout(widget_that_lets_me_horizontally_align_an_icon)
        section_remove = QLabel()
        dim = int(1.5 * section_remove.fontMetrics().boundingRect("Q").height())
        section_remove.setPixmap(
            QIcon(section_remove.style().standardIcon(
                QStyle.SP_DialogDiscardButton)
            ).pixmap(dim, dim)
        )
        widget_layout.addWidget(section_remove, 0, Qt.AlignHCenter)
        widget_layout.setContentsMargins(0, 0, 0, 0)
        tool.ligand_table.setCellWidget(
            rows, 2, widget_that_lets_me_horizontally_align_an_icon
        )
        rows += 1

    tool.ligand_table.insertRow(rows)

    widget_that_lets_me_horizontally_align_an_icon = QWidget()
    widget_layout = QHBoxLayout(widget_that_lets_me_horizontally_align_an_icon)
    ligand_add = QLabel("add ligand")
    widget_layout.addWidget(ligand_add, 0, Qt.AlignHCenter)
    widget_layout.setContentsMargins(0, 0, 0, 0)
    tool.ligand_table.setCellWidget(rows, 1, widget_that_lets_me_horizontally_align_an_icon)
Ejemplo n.º 2
0
class BoolInputWidget(InputWidgetSingle):
    """Boolean data input widget"""
    def __init__(self, parent=None, **kwds):
        super(BoolInputWidget, self).__init__(parent=parent, **kwds)
        self.cb = QCheckBox(self)
        self.setWidget(self.cb)
        self.cb.stateChanged.connect(
            lambda val: self.dataSetCallback(bool(val)))

    def setWidgetValue(self, val):
        if bool(val):
            self.cb.setCheckState(QtCore.Qt.Checked)
        else:
            self.cb.setCheckState(QtCore.Qt.Unchecked)
Ejemplo n.º 3
0
class _SubstituentSelector(ToolInstance):
    def __init__(self, session, name):
        super().__init__(session, name)
        self.tool_window = MainToolWindow(self)
        self._build_ui()

    def _build_ui(self):
        layout = QFormLayout()

        self.substituent_table = SubstituentTable(singleSelect=True)
        layout.addRow(self.substituent_table)

        self.new_residue = QCheckBox()
        self.new_residue.setCheckState(
            Qt.Checked if SubstituteMouseMode.newRes else Qt.Unchecked)
        layout.addRow("new residue:", self.new_residue)

        self.res_name = QLineEdit()
        self.res_name.setPlaceholderText("leave blank to keep current")
        layout.addRow("set residue name:", self.res_name)

        self.distance_names = QCheckBox()
        self.distance_names.setCheckState(
            Qt.Checked if SubstituteMouseMode.useRemoteness else Qt.Unchecked)
        layout.addRow("distance atom names:", self.distance_names)

        self.keep_open = QCheckBox()
        layout.addRow("keep list open:", self.keep_open)

        do_it = QPushButton("set substituent")
        do_it.clicked.connect(self.set_sub)
        layout.addRow(do_it)

        self.keep_open.stateChanged.connect(
            lambda state: do_it.setVisible(state != Qt.Checked))
        self.keep_open.stateChanged.connect(self.sub_changed)

        self.substituent_table.table.itemSelectionChanged.connect(
            self.sub_changed)
        self.new_residue.stateChanged.connect(self.sub_changed)
        self.res_name.textChanged.connect(self.sub_changed)
        self.distance_names.stateChanged.connect(self.sub_changed)

        self.tool_window.ui_area.setLayout(layout)

        self.tool_window.manage(None)

    def sub_changed(self):
        if self.keep_open.checkState() == Qt.Checked:
            self.set_sub()

    def set_sub(self):
        sub_names = []
        for row in self.substituent_table.table.selectionModel().selectedRows(
        ):
            if self.substituent_table.table.isRowHidden(row.row()):
                continue

            sub_names.append(row.data())

        if sub_names:
            SubstituteMouseMode.substituent = sub_names[0]
            SubstituteMouseMode.newRes = self.new_residue.checkState(
            ) == Qt.Checked
            SubstituteMouseMode.useRemoteness = self.distance_names.checkState(
            ) == Qt.Checked
            sub_name = self.res_name.text()
            SubstituteMouseMode.resName = sub_name

        if self.keep_open.checkState() != Qt.Checked:
            self.delete()

    def close(self):
        sub_names = []
        for row in self.substituent_table.table.selectionModel().selectedRows(
        ):
            if self.substituent_table.table.isRowHidden(row.row()):
                continue

            sub_names.append(row.data())

        if sub_names:
            SubstituteMouseMode.substituent = sub_names[0]
            SubstituteMouseMode.newRes = self.new_residue.checkState(
            ) == Qt.Checked
            SubstituteMouseMode.useRemoteness = self.distance_names.checkState(
            ) == Qt.Checked
            sub_name = self.res_name.text()
            SubstituteMouseMode.resName = sub_name

        super().close()
Ejemplo n.º 4
0
class AARONInputBuilder(ToolInstance):
    SESSION_ENDURING = False
    SESSION_SAVE = False

    def __init__(self, session, name):
        super().__init__(session, name)

        self.theory_settings = _InputGeneratorSettings(session,
                                                       "Build QM Input",
                                                       version="3")

        self.tool_window = MainToolWindow(self)

        self._build_ui()

    def _build_ui(self):
        layout = QGridLayout()

        tab_widget = QTabWidget()
        layout.addWidget(tab_widget)

        structure_widget = QWidget()
        structure_layout = QGridLayout(structure_widget)
        tab_widget.addTab(structure_widget, "structure")

        self.structure_source = QComboBox()
        self.structure_source.addItems(
            ["AARON template", "file", "coordination complexes", "SMILES"])

        structure_layout.addWidget(QLabel("structure source:"), 0, 0, 1, 1,
                                   Qt.AlignLeft | Qt.AlignVCenter)

        structure_layout.addWidget(
            self.structure_source,
            0,
            1,
            1,
            1,
        )

        open_button = QPushButton("open")
        open_button.clicked.connect(self.open_template)
        structure_layout.addWidget(
            open_button,
            0,
            2,
            1,
            1,
        )

        # SMILES options
        self.smiles_options = QGroupBox("SMILES options")
        smiles_layout = QFormLayout(self.smiles_options)
        structure_layout.addWidget(self.smiles_options, 1, 0, 1, 3,
                                   Qt.AlignTop | Qt.AlignHCenter)

        self.smiles_line = QLineEdit()
        smiles_layout.addRow("SMILES string:", self.smiles_line)

        self.smiles_options.setVisible(
            self.structure_source.currentText() == "SMILES")
        self.structure_source.currentTextChanged.connect(
            lambda text: self.smiles_options.setVisible(text == "SMILES"))

        # coordination complexes options
        self.coord_comp_options = QGroupBox("Coordination Complex Options")
        coord_layout = QFormLayout(self.coord_comp_options)
        structure_layout.addWidget(self.coord_comp_options, 1, 0, 1, 3,
                                   Qt.AlignTop | Qt.AlignHCenter)

        create_coord_items(self,
                           coord_layout,
                           allow_minimization=False,
                           default_ele="Pd")

        self.coord_comp_options.setVisible(
            self.structure_source.currentText() == "coordination complexes")
        self.structure_source.currentTextChanged.connect(
            lambda text: self.coord_comp_options.setVisible(
                text == "coordination complexes"))

        # aaron template options
        self.aaron_options = QGroupBox("AARON template structures")
        aaron_layout = QFormLayout(self.aaron_options)
        structure_layout.addWidget(self.aaron_options, 1, 0, 1, 3,
                                   Qt.AlignTop | Qt.AlignHCenter)

        self.aaron_options.setVisible(
            self.structure_source.currentText() == "AARON template")
        self.structure_source.currentTextChanged.connect(
            lambda text: self.aaron_options.setVisible(text == "AARON template"
                                                       ))

        # file options
        self.file_options = QGroupBox("single file options")
        file_layout = QFormLayout(self.file_options)
        structure_layout.addWidget(self.file_options, 1, 0, 1, 3,
                                   Qt.AlignTop | Qt.AlignHCenter)

        file_widget = QWidget()
        file_browse_layout = QGridLayout(file_widget)

        self.template_file = QLineEdit()
        file_browse_layout.addWidget(self.template_file, 0, 0, 1, 1,
                                     Qt.AlignCenter)
        browse_button = QPushButton("browse...")
        # browse_button.clicked.connect(self.browse_file_template)
        file_browse_layout.addWidget(browse_button, 0, 1, 1, 1, Qt.AlignCenter)

        file_browse_layout.setColumnStretch(0, 1)
        file_browse_layout.setColumnStretch(1, 0)
        margins = file_browse_layout.contentsMargins()
        file_browse_layout.setContentsMargins(margins.left(), 0,
                                              margins.right(), 0)

        file_layout.addRow("file:", file_widget)

        self.file_options.setVisible(
            self.structure_source.currentText() == "file")
        self.structure_source.currentTextChanged.connect(
            lambda text: self.file_options.setVisible(text == "file"))

        self.optimize_template = QCheckBox()
        self.optimize_template.setCheckState(Qt.Checked)
        structure_layout.addWidget(
            QLabel("optimize template:"),
            2,
            0,
            1,
            1,
            Qt.AlignLeft | Qt.AlignVCenter,
        )
        structure_layout.addWidget(
            self.optimize_template,
            2,
            1,
            1,
            2,
            Qt.AlignLeft | Qt.AlignVCenter,
        )

        structure_layout.setColumnStretch(0, 0)
        structure_layout.setColumnStretch(1, 1)
        structure_layout.setColumnStretch(2, 0)

        # structure changes
        changes_widget = QWidget()
        changes_layout = QGridLayout(changes_widget)
        tab_widget.addTab(changes_widget, "changes")

        # HPC settings
        hpc_widget = QWidget()
        hpc_layout = QGridLayout(hpc_widget)
        tab_widget.addTab(hpc_widget, "HPC")

        # theory settings
        theory_widget = QWidget()
        theory_layout = QGridLayout(theory_widget)
        tab_widget.addTab(theory_widget, "theory")

        # results
        results_widget = QWidget()
        results_layout = QGridLayout(results_widget)
        tab_widget.addTab(results_widget, "results")

        self.tool_window.ui_area.setLayout(layout)

        self.tool_window.manage(None)

    def open_template(self):
        pass
Ejemplo n.º 5
0
class PrecisionRotate(ToolInstance):

    help = "https://github.com/QChASM/SEQCROW/wiki/Rotate-Tool"
    SESSION_ENDURING = False
    SESSION_SAVE = False

    def __init__(self, session, name):
        super().__init__(session, name)

        self.tool_window = MainToolWindow(self)

        self.settings = _PrecisionRotateSettings(session, name)

        self.bonds = {}
        self.bond_centers = {}
        self.groups = {}
        self.perpendiculars = {}
        self.perp_centers = {}
        self.manual_center = {}

        self._build_ui()

        self._show_rot_vec = self.session.triggers.add_handler(
            SELECTION_CHANGED, self.show_rot_vec)
        global_triggers = get_triggers()
        self._changes = global_triggers.add_handler("changes done",
                                                    self.show_rot_vec)

        self.show_rot_vec()

    def _build_ui(self):
        layout = QGridLayout()

        layout.addWidget(QLabel("center of rotation:"), 0, 0, 1, 1,
                         Qt.AlignLeft | Qt.AlignVCenter)

        self.cor_button = QComboBox()
        self.cor_button.addItems(
            ["automatic", "select atoms", "view's center of rotation"])
        layout.addWidget(self.cor_button, 0, 1, 1, 1, Qt.AlignTop)

        self.set_cor_selection = QPushButton("set selection")
        self.cor_button.currentTextChanged.connect(
            lambda t, widget=self.set_cor_selection: widget.setEnabled(
                t == "select atoms"))
        self.set_cor_selection.clicked.connect(self.manual_cor)
        layout.addWidget(self.set_cor_selection, 0, 2, 1, 1, Qt.AlignTop)
        self.set_cor_selection.setEnabled(False)

        layout.addWidget(QLabel("rotation vector:"), 1, 0, 1, 1,
                         Qt.AlignLeft | Qt.AlignVCenter)

        self.vector_option = QComboBox()
        self.vector_option.addItems([
            "axis", "view axis", "bond", "perpendicular to plane",
            "centroid of atoms", "custom"
        ])
        layout.addWidget(self.vector_option, 1, 1, 1, 1, Qt.AlignVCenter)

        vector = QWidget()
        vector.setToolTip("vector will be normalized before rotating")
        vector_layout = QHBoxLayout(vector)
        vector_layout.setContentsMargins(0, 0, 0, 0)
        self.vector_x = QDoubleSpinBox()
        self.vector_y = QDoubleSpinBox()
        self.vector_z = QDoubleSpinBox()
        self.vector_z.setValue(1.0)
        for c, t in zip([self.vector_x, self.vector_y, self.vector_z],
                        [" x", " y", " z"]):
            c.setSingleStep(0.01)
            c.setRange(-100, 100)
            # c.setSuffix(t)
            c.valueChanged.connect(self.show_rot_vec)
            vector_layout.addWidget(c)

        layout.addWidget(vector, 1, 2, 1, 1, Qt.AlignTop)
        vector.setVisible(self.vector_option.currentText() == "custom")
        self.vector_option.currentTextChanged.connect(
            lambda text, widget=vector: widget.setVisible(text == "custom"))

        self.view_axis = QComboBox()
        self.view_axis.addItems(["z", "y", "x"])
        layout.addWidget(self.view_axis, 1, 2, 1, 1, Qt.AlignTop)
        self.view_axis.setVisible(
            self.vector_option.currentText() == "view axis")
        self.vector_option.currentTextChanged.connect(
            lambda text, widget=self.view_axis: widget.setVisible(text ==
                                                                  "view axis"))

        self.axis = QComboBox()
        self.axis.addItems(["z", "y", "x"])
        layout.addWidget(self.axis, 1, 2, 1, 1, Qt.AlignTop)
        self.axis.setVisible(self.vector_option.currentText() == "axis")
        self.vector_option.currentTextChanged.connect(
            lambda text, widget=self.axis: widget.setVisible(text == "axis"))

        self.bond_button = QPushButton("set selected bond")
        self.bond_button.clicked.connect(self.set_bonds)
        layout.addWidget(self.bond_button, 1, 2, 1, 1, Qt.AlignTop)
        self.bond_button.setVisible(self.vector_option.currentText() == "bond")
        self.vector_option.currentTextChanged.connect(
            lambda text, widget=self.bond_button: widget.setVisible(text ==
                                                                    "bond"))

        self.perp_button = QPushButton("set selected atoms")
        self.perp_button.clicked.connect(self.set_perpendicular)
        layout.addWidget(self.perp_button, 1, 2, 1, 1, Qt.AlignTop)
        self.perp_button.setVisible(
            self.vector_option.currentText() == "perpendicular to plane")
        self.vector_option.currentTextChanged.connect(
            lambda text, widget=self.perp_button: widget.setVisible(
                text == "perpendicular to plane"))

        self.group_button = QPushButton("set selected atoms")
        self.group_button.clicked.connect(self.set_group)
        layout.addWidget(self.group_button, 1, 2, 1, 1, Qt.AlignTop)
        self.group_button.setVisible(
            self.vector_option.currentText() == "centroid of atoms")
        self.vector_option.currentTextChanged.connect(
            lambda text, widget=self.group_button: widget.setVisible(
                text == "centroid of atoms"))

        layout.addWidget(QLabel("angle:"), 2, 0, 1, 1,
                         Qt.AlignLeft | Qt.AlignVCenter)

        self.angle = QDoubleSpinBox()
        self.angle.setRange(-360, 360)
        self.angle.setSingleStep(5)
        self.angle.setSuffix("°")
        layout.addWidget(self.angle, 2, 1, 1, 1,
                         Qt.AlignLeft | Qt.AlignVCenter)

        layout.addWidget(QLabel("preview rotation axis:"), 3, 0, 1, 1,
                         Qt.AlignLeft | Qt.AlignVCenter)
        self.display_rot_vec = QCheckBox()
        self.display_rot_vec.setCheckState(Qt.Checked)
        self.display_rot_vec.stateChanged.connect(self.show_rot_vec)
        layout.addWidget(self.display_rot_vec, 3, 1, 1, 1,
                         Qt.AlignLeft | Qt.AlignVCenter)

        rotate_button = QPushButton("rotate selected atoms")
        rotate_button.clicked.connect(self.do_rotate)
        layout.addWidget(rotate_button, 4, 0, 1, 3, Qt.AlignTop)
        self.rotate_button = rotate_button

        self.status_bar = QStatusBar()
        self.status_bar.setSizeGripEnabled(False)
        layout.addWidget(self.status_bar, 5, 0, 1, 3, Qt.AlignTop)

        self.vector_option.currentTextChanged.connect(self.show_auto_status)
        self.cor_button.currentIndexChanged.connect(
            lambda *args: self.show_auto_status("select atoms"))

        self.cor_button.currentIndexChanged.connect(self.show_rot_vec)
        self.set_cor_selection.clicked.connect(self.show_rot_vec)
        self.vector_option.currentIndexChanged.connect(self.show_rot_vec)
        self.axis.currentIndexChanged.connect(self.show_rot_vec)
        self.view_axis.currentIndexChanged.connect(self.show_rot_vec)
        self.bond_button.clicked.connect(self.show_rot_vec)
        self.perp_button.clicked.connect(self.show_rot_vec)
        self.group_button.clicked.connect(self.show_rot_vec)

        layout.setRowStretch(0, 0)
        layout.setRowStretch(1, 0)
        layout.setRowStretch(2, 0)
        layout.setRowStretch(3, 0)
        layout.setRowStretch(4, 0)
        layout.setRowStretch(5, 1)

        layout.setColumnStretch(0, 0)
        layout.setColumnStretch(1, 1)
        layout.setColumnStretch(2, 1)

        self.tool_window.ui_area.setLayout(layout)

        self.tool_window.manage(None)

    def manual_cor(self, *args):
        selection = selected_atoms(self.session)

        models = {}
        for atom in selection:
            if atom.structure not in models:
                models[atom.structure] = [atom]
            else:
                models[atom.structure].append(atom)

        self.manual_center = {}
        for model in models:
            atoms = models[model]
            coords = np.array([atom.coord for atom in atoms])
            self.manual_center[model] = np.mean(coords, axis=0)

    def show_auto_status(self, text):
        if self.cor_button.currentText() == "automatic":
            if text == "bond":
                self.status_bar.showMessage(
                    "center set to one of the bonded atoms")
            elif text == "perpendicular to plane":
                self.status_bar.showMessage("center set to centroid of atoms")
            else:
                self.status_bar.showMessage(
                    "center set to centroid of rotating atoms")

        elif self.cor_button.currentText() == "select atoms":
            self.status_bar.showMessage(
                "center set to centroid of specified atoms")

        else:
            self.status_bar.showMessage(
                "center set to view's center of rotation")

    def set_bonds(self, *args):
        bonds = selected_bonds(self.session)
        if len(bonds) == 0:
            self.session.logger.error("no bonds selected")
            return

        models = [bond.structure for bond in bonds]
        if any(models.count(m) > 1 for m in models):
            self.session.logger.error(
                "multiple bonds selected on the same structure")
            return

        self.bonds = {
            model: (bond.atoms[0].coord - bond.atoms[1].coord)
            for model, bond in zip(models, bonds)
        }
        self.bond_centers = {
            model: bond.atoms[1].coord
            for model, bond in zip(models, bonds)
        }

    def set_perpendicular(self, *args):
        atoms = selected_atoms(self.session)
        if len(atoms) == 0:
            self.session.logger.error("no atoms selected")
            return

        self.perpendiculars = {}
        self.perp_centers = {}

        models = set(atom.structure for atom in atoms)
        for model in models:
            atom_coords = []
            for atom in atoms:
                if atom.structure is model:
                    atom_coords.append(atom.coord)

            if len(atom_coords) < 3:
                self.session.logger.error("fewer than 3 atoms selected on %s" %
                                          model.atomspec)
                continue

            xyz = np.array(atom_coords)
            xyz -= np.mean(atom_coords, axis=0)
            R = np.dot(xyz.T, xyz)
            u, s, vh = np.linalg.svd(R, compute_uv=True)
            vector = u[:, -1]

            self.perpendiculars[model] = vector
            self.perp_centers[model] = np.mean(atom_coords, axis=0)

    def set_group(self, *args):
        atoms = selected_atoms(self.session)
        if len(atoms) == 0:
            self.session.logger.error("no atoms selected")
            return

        self.groups = {}

        models = set(atom.structure for atom in atoms)
        for model in models:
            atom_coords = []
            for atom in atoms:
                if atom.structure is model:
                    atom_coords.append(atom.coord)

            self.groups[model] = np.mean(atom_coords, axis=0)

    def do_rotate(self, *args):
        selection = selected_atoms(self.session)

        models = {}
        for atom in selection:
            if atom.structure not in models:
                models[atom.structure] = [atom]
            else:
                models[atom.structure].append(atom)

        if len(models.keys()) == 0:
            return

        if self.vector_option.currentText() == "axis":
            if self.axis.currentText() == "z":
                vector = np.array([0., 0., 1.])
            elif self.axis.currentText() == "y":
                vector = np.array([0., 1., 0.])
            elif self.axis.currentText() == "x":
                vector = np.array([1., 0., 0.])

        elif self.vector_option.currentText() == "view axis":
            if self.view_axis.currentText() == "z":
                vector = self.session.view.camera.get_position().axes()[2]
            elif self.view_axis.currentText() == "y":
                vector = self.session.view.camera.get_position().axes()[1]
            elif self.view_axis.currentText() == "x":
                vector = self.session.view.camera.get_position().axes()[0]

        elif self.vector_option.currentText() == "bond":
            vector = self.bonds

        elif self.vector_option.currentText() == "perpendicular to plane":
            vector = self.perpendiculars

        elif self.vector_option.currentText() == "centroid of atoms":
            vector = self.groups

        elif self.vector_option.currentText() == "custom":
            x = self.vector_x.value()
            y = self.vector_y.value()
            z = self.vector_z.value()
            vector = np.array([x, y, z])

        angle = np.deg2rad(self.angle.value())

        center = {}
        for model in models:
            atoms = models[model]
            coords = np.array([atom.coord for atom in atoms])
            center[model] = np.mean(coords, axis=0)

        if self.cor_button.currentText() == "automatic":
            if self.vector_option.currentText() == "perpendicular to plane":
                center = self.perp_centers

            elif self.vector_option.currentText() == "bond":
                center = self.bond_centers

        elif self.cor_button.currentText() == "select atoms":
            center = self.manual_center

        else:
            center = self.session.main_view.center_of_rotation

        for model in models:
            if isinstance(vector, dict):
                if model not in vector.keys():
                    continue
                else:
                    v = vector[model]

            else:
                v = vector

            if isinstance(center, dict):
                if model not in center.keys():
                    continue
                else:
                    c = center[model]

            else:
                c = center

            if self.vector_option.currentText(
            ) == "centroid of atoms" and self.cor_button.currentText(
            ) != "automatic":
                v = v - c

            v = v / np.linalg.norm(v)
            q = np.hstack(([np.cos(angle / 2)], v * np.sin(angle / 2)))

            q /= np.linalg.norm(q)
            qs = q[0]
            qv = q[1:]

            xyz = np.array([a.coord for a in models[model]])
            xyz -= c
            xprod = np.cross(qv, xyz)
            qs_xprod = 2 * qs * xprod
            qv_xprod = 2 * np.cross(qv, xprod)

            xyz += qs_xprod + qv_xprod + c
            for t, coord in zip(models[model], xyz):
                t.coord = coord

    def show_rot_vec(self, *args):
        for model in self.session.models.list(type=Generic3DModel):
            if model.name == "rotation vector":
                model.delete()

        if self.display_rot_vec.checkState() == Qt.Unchecked:
            return

        selection = selected_atoms(self.session)

        if len(selection) == 0:
            return

        models = {}
        for atom in selection:
            if atom.structure not in models:
                models[atom.structure] = [atom]
            else:
                models[atom.structure].append(atom)

        if len(models.keys()) == 0:
            return

        if self.vector_option.currentText() == "axis":
            if self.axis.currentText() == "z":
                vector = np.array([0., 0., 1.])
            elif self.axis.currentText() == "y":
                vector = np.array([0., 1., 0.])
            elif self.axis.currentText() == "x":
                vector = np.array([1., 0., 0.])

        elif self.vector_option.currentText() == "view axis":
            if self.view_axis.currentText() == "z":
                vector = self.session.view.camera.get_position().axes()[2]
            elif self.view_axis.currentText() == "y":
                vector = self.session.view.camera.get_position().axes()[1]
            elif self.view_axis.currentText() == "x":
                vector = self.session.view.camera.get_position().axes()[0]

        elif self.vector_option.currentText() == "bond":
            vector = self.bonds

        elif self.vector_option.currentText() == "perpendicular to plane":
            vector = self.perpendiculars

        elif self.vector_option.currentText() == "centroid of atoms":
            vector = self.groups

        elif self.vector_option.currentText() == "custom":
            x = self.vector_x.value()
            y = self.vector_y.value()
            z = self.vector_z.value()
            vector = np.array([x, y, z])

        center = {}
        for model in models:
            atoms = models[model]
            coords = np.array([atom.coord for atom in atoms])
            center[model] = np.mean(coords, axis=0)

        if self.cor_button.currentText() == "automatic":
            if self.vector_option.currentText() == "perpendicular to plane":
                center = self.perp_centers

            elif self.vector_option.currentText() == "bond":
                center = self.bond_centers

        elif self.cor_button.currentText() == "select atoms":
            center = self.manual_center

        else:
            center = self.session.main_view.center_of_rotation

        for model in models:
            if isinstance(vector, dict):
                if model not in vector.keys():
                    continue
                else:
                    v = vector[model]

            else:
                v = vector

            if isinstance(center, dict):
                if model not in center.keys():
                    continue
                else:
                    c = center[model]

            else:
                c = center

            if self.vector_option.currentText(
            ) == "centroid of atoms" and self.cor_button.currentText(
            ) != "automatic":
                v = v - c

            if np.linalg.norm(v) == 0:
                continue

            residues = []
            for atom in models[model]:
                if atom.residue not in residues:
                    residues.append(atom.residue)

            v_c = c + v

            s = ".color red\n"
            s += ".arrow %10.6f %10.6f %10.6f   %10.6f %10.6f %10.6f   0.2 0.4 0.7\n" % (
                *c, *v_c)

            stream = BytesIO(bytes(s, 'utf-8'))
            bild_obj, status = read_bild(self.session, stream,
                                         "rotation vector")

            self.session.models.add(bild_obj, parent=model)

    def delete(self):
        self.session.triggers.remove_handler(self._show_rot_vec)
        global_triggers = get_triggers()
        global_triggers.remove_handler(self._changes)

        for model in self.session.models.list(type=Generic3DModel):
            if model.name == "rotation vector":
                model.delete()

        return super().delete()

    def close(self):
        self.session.triggers.remove_handler(self._show_rot_vec)
        global_triggers = get_triggers()
        global_triggers.remove_handler(self._changes)

        for model in self.session.models.list(type=Generic3DModel):
            if model.name == "rotation vector":
                model.delete()

        return super().close()