################################################################################################
# Copyright 2022 GlobalFoundries PDK Authors
#
# Licensed under the Apache License, Version 2.0 (the 'License');
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an 'AS IS' BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
################################################################################################


if BEOL

    if METAL_LEVEL == '6LM'    
        #================================================
        #----------------------VIA5----------------------
        #================================================ 

        # Rule V5.1: Min/max Via5 size . is 0.26µm
        logger.info('Executing rule V5.1')
        v51_l1 = via5.edges.without_length(0.26.um).extended(0, 0, 0.001, 0.001)
        v51_l1.output('V5.1', 'V5.1 : Min/max Via5 size . : 0.26µm')
        v51_l1.forget

        # Rule V5.2: min. via5 spacing is 0.26µm
        logger.info('Executing rule V5.2')
        v52_l1  = via5.space(0.26.um, euclidian).polygons(0.001)
        v52_l1.output('V5.2', 'V5.2 : min. via5 spacing : 0.26µm')
        v52_l1.forget 

        # Rule V5.3a: metal5  overlap of via5.
        logger.info('Executing rule V5.3a')
        v53b_l1 = metal5.enclosing(via5, 0.01.um, euclidian).polygons(0.001).or(via5.not(metal5))
        v53b_l1.output('V5.3a', 'V5.3a : metal5  overlap of via5.')
        v53b_l1.forget

        v5p3b_cond = metal5.drc( width <= 0.34.um).with_length(0.28.um,nil,both)
        v5p3b_eol = metal5.edges.with_length(nil, 0.34.um).interacting(v5p3b_cond.first_edges).interacting(v5p3b_cond.second_edges).not(v5p3b_cond.first_edges).not(v5p3b_cond.second_edges)
        # Rule V5.3b: metal5 (< 0.34um) end-of-line overlap. is 0.06µm
        logger.info('Executing rule V5.3b')
        v53b_l1 = v5p3b_eol.enclosing(via5.edges,0.06.um, projection).polygons(0.001)
        v53b_l1.output('V5.3b', 'V5.3b : metal5 (< 0.34um) end-of-line overlap. : 0.06µm')
        v53b_l1.forget

        v5p3b_cond.forget

        v5p3b_eol.forget

        v5_3c_1 = via5.edges.interacting(via5.drc(enclosed(metal5, projection) < 0.04.um).edges.centers(0, 0.5))
        v5_3c_2 = via5.edges.interacting(via5.drc(0.04.um <= enclosed(metal5, projection) < 0.06.um).centers(0, 0.5))
        v5_3c_3 = v5_3c_1.extended(0, 0, 0, 0.001, joined).corners(90)
        # Rule V5.3c: If metal5 overlap via5 by < 0.04um on one side, adjacent metal5 edges overlap. is 0.06µm
        logger.info('Executing rule V5.3c')
        v53c_l1 = v5_3c_2.not_in(v5_3c_1).interacting(v5_3c_1).or(v5_3c_1.interacting(v5_3c_3)).enclosed(metal5.edges, 0.06.um).polygons(0.001)
        v53c_l1.output('V5.3c', 'V5.3c : If metal5 overlap via5 by < 0.04um on one side, adjacent metal5 edges overlap. : 0.06µm')
        v53c_l1.forget

        v5_3c_1.forget

        v5_3c_2.forget

        v5_3c_3.forget

        # rule V5.3d is not a DRC check

        # Rule V5.4a: metaltop overlap of via5. is 0.01um
        logger.info('Executing rule V5.4a')
        v5_4a_l1 = metaltop.enclosing(via5, 0.01.um, euclidian).polygons(0.001)
        v5_4a_l2 = via5.interacting(metaltop).not(metaltop)
        v5_4a_l = v5_4a_l1.join(v5_4a_l2)        
        v5_4a_l.output('V5.4a', 'V5.4a : metaltop overlap of via5.: 0.01um')
        v5_4a_l1.forget
        v5_4a_l2.forget
        v5_4a_l.forget
        
        v5p4b_cond = top_metal.drc( width <= 0.34.um).with_length(0.28.um,nil,both)
        v5p4b_eol = top_metal.edges.with_length(nil, 0.34.um).interacting(v5p4b_cond.first_edges).interacting(v5p4b_cond.second_edges).not(v5p4b_cond.first_edges).not(v5p4b_cond.second_edges)
        # Rule V5.4b: metaltop (< 0.34um) end-of-line overlap. is 0.06µm
        logger.info('Executing rule V5.4b')
        v54b_l1 = v5p4b_eol.enclosing(via5.edges,0.06.um, projection).polygons(0.001)
        v54b_l1.output('V5.4b', 'V5.4b : metaltop (< 0.34um) end-of-line overlap. : 0.06µm')
        v54b_l1.forget

        v5p4b_cond.forget

        v5p4b_eol.forget

        v5_4c_1 = via5.edges.interacting(via5.drc(enclosed(top_metal, projection) < 0.04.um).edges.centers(0, 0.5))
        v5_4c_2 = via5.edges.interacting(via5.drc(0.04.um <= enclosed(top_metal, projection) < 0.06.um).centers(0, 0.5))
        v5_4c_3 = v5_4c_1.extended(0, 0, 0, 0.001, joined).corners(90)
        # Rule V5.4c: If metaltop overlap via5 by < 0.04um on one side, adjacent metaltop edges overlap. is 0.06µm
        logger.info('Executing rule V5.4c')
        v54c_l1 = v5_4c_2.not_in(v5_4c_1).interacting(v5_4c_1).or(v5_4c_1.interacting(v5_4c_3)).enclosed(top_metal.edges, 0.06.um).polygons(0.001)
        v54c_l1.output('V5.4c', 'V5.4c : If metaltop overlap via5 by < 0.04um on one side, adjacent metaltop edges overlap. : 0.06µm')
        v54c_l1.forget

        v5_4c_1.forget

        v5_4c_2.forget

        v5_4c_3.forget

        # rule V5.4d is not a DRC check

        # rule V5.5 is not a DRC check
    end # METAL_LEVEL        
end #BEOL