source: development/momentum_sink/friction_block.py @ 2378

# add inundation dir to your pythonpath
from pmesh.mesh import Mesh
from coordinate_transforms.geo_reference import Geo_reference


def create_mesh(maximum_triangle_area,
                mesh_file=None,
                triangles_in_name = False):
    """
    triangles_in_name, if True is used to append the number of
    triangles in the mesh to the mesh file name.
    """
    # create a mesh instance of class Mesh
    m = Mesh()

    # Boundary of problem
    WidtH = 202 # width of boudary in metres
    #W = WidtH/8
    #L = W
    #outer_polygon = [[0,0],[2*WidtH,0],[2*WidtH,WidtH],[0,WidtH]]
    #m.add_region_from_polygon(outer_polygon, tags={'wall':[0,1,2], 'wave':[3]})

    #domain.set_region(Set_region('mound', 'elevation', 100, location='unique vertices'))

    #Boundary
    dict = {}
    dict['points'] = [[0,0],[0.5*WidtH,0],[1.5*WidtH,0],[2*WidtH,0],[2*WidtH,WidtH] \
                      ,[1.5*WidtH,WidtH],[0.5*WidtH,WidtH],[0,WidtH]]
    
    dict['segments'] = [[0,1], [1,2], [2,3], [3,4],
                        [4,5], [5,6], [6,7], [7,0],[1,6],[2,5]] # the outer border
    dict['segment_tags'] = ['wall',
                            'wall',
                            'wall',                           
                            'wall',
                            'wall',
                            'wall',
                            'wall',
                            'wave',
                            '',                            
                            '']
    m.addVertsSegs(dict)

    medium = m.add_region(0.51*WidtH,0.1)
    medium.setTag('mound')
    
    m.generate_mesh(maximum_triangle_area=maximum_triangle_area)
    triangle_count = m.get_triangle_count()
    
    if mesh_file is None:    
        return m, triangle_count
    else:
        if triangles_in_name is True:
            mesh_file = mesh_file[:-4] + '_' + str(triangle_count) \
                        + mesh_file[-4:]
        m.export_mesh_file(mesh_file)
        return mesh_file, triangle_count

#-------------------------------------------------------------
if __name__ == "__main__":
    _, triangle_count = create_mesh(10,mesh_file="test.tsh")
    print "triangle_count",triangle_count