source: anuga_work/production/australia_ph2/wyndham/setup_model.py @ 6539

"""
Module to import the project.py 'configuration' file and perform
sanity checks plus a quick check on mesh generation.

Also callable as a stand-alone program, mainly to view the results
of the mesh generation.
"""

import os

from os.path import join, exists
from anuga.utilities.polygon import read_polygon, number_mesh_triangles

import project


#-------------------------------------------------------------------------------
# Sanity checks - check that required files/directories, etc, exist.
#-------------------------------------------------------------------------------

# flag - we check many things and then don't proceed if anything wrong
sanity_error = False               # checked at bottom of this file

# Test that environment variables are defined.
if os.getenv(project.ENV_INUNDATIONHOME) is None:
    print "Environment variable '%s' is not set" % project.ENV_INUNDATIONHOME
    sanity_error = True

if os.getenv(project.ENV_MUXHOME) is None:
    print "Environment variable '%s' is not set" % project.ENV_MUXHOME
    sanity_error = True

#-------------------------------------------------------------------------------
# Directory Structure
#-------------------------------------------------------------------------------

# check folders generated from environment variables.
if not exists(project.home):
    print "Sorry, data directory '%s' doesn't exist" % project.home
    sanity_error = True
    
if not exists(project.muxhome):
    print "Sorry, MUX directory '%s' doesn't exist" % project.muxhome
    sanity_error = True
    
if not exists(project.anuga_folder):
    print "Sorry, ANUGA directory '%s' doesn't exist" % project.anuga_folder
    sanity_error = True

if not exists(project.topographies_folder):
    print ("Sorry, topo directory '%s' doesn't exist"
           % project.topographies_folder)
    sanity_error = True

if not exists(project.polygons_folder):
    print ("Sorry, polygon directory '%s' doesn't exist"
           % project.polygons_folder)
    sanity_error = True

if not exists(project.boundaries_folder):
    print ("Sorry, boundaries directory '%s' doesn't exist"
           % project.boundaries_folder)
    sanity_error = True

if not exists(project.output_folder):
    print "Sorry, outputs directory '%s' doesn't exist" % project.output_folder
    sanity_error = True

if not exists(project.gauges_folder):
    print "Sorry, gauges directory '%s' doesn't exist" % project.gauges_folder
    sanity_error = True

if not exists(project.meshes_folder):
    print "Sorry, meshes directory '%s' doesn't exist" % project.meshes_folder
    sanity_error = True

if not exists(project.mux_data_folder):
    print "Sorry, mux data directory '%s' doesn't exist" % project.mux_data_folder
    sanity_error = True

# if multi_mux is True, check if multi-mux file exists
if project.multi_mux:
    if not exists(project.mux_input):
        print ("Sorry, MUX input file '%s' doesn't exist"
               % project.mux_input)
        sanity_error = True

#-----
# If this directory don't exist, EventSelection hasn't been run.
#-----

if not exists(project.event_folder):
    print ("Sorry, you must generate event %s with EventSelection."
           % project.event_number)
    sanity_error = True

#-------------------------------------------------------------------------------
# Determine type of run
#-------------------------------------------------------------------------------

if project.setup == 'trial':
    print 'trial'
    project.scale_factor = 100
    project.time_thinning = 96
    project.yieldstep = 240
elif project.setup == 'basic': 
    print 'basic'
    project.scale_factor = 4
    project.time_thinning = 12
    project.yieldstep = 120
elif project.setup == 'final': 
    print 'final'
    project.scale_factor = 1
    project.time_thinning = 4
    project.yieldstep = 60
else:
    print ("Sorry, you must set the 'setup' variable to one of:"
           '   trial - coarsest mesh, fast\n'
           '   basic - coarse mesh\n'
           '   final - fine mesh, slowest\n'
           '\n'
           "'setup' was set to '%s'" % project.setup)
    sanity_error = True

#-------------------------------------------------------------------------------
# Check for errors detected above.
#-------------------------------------------------------------------------------

if sanity_error:
    msg = 'You must fix the above errors before continuing.'
    raise Exception, msg

#-------------------------------------------------------------------------------
# Reading polygons and creating interior regions
#-------------------------------------------------------------------------------

# Create list of land polygons with initial conditions
project.land_initial_conditions = []
for filename, MSL in project.land_initial_conditions_filename:
    polygon = read_polygon(join(project.polygons_folder, filename))
    project.land_initial_conditions.append([polygon, MSL])

# Create list of interior polygons with scaling factor
project.interior_regions = []
for filename, maxarea in project.interior_regions_data:
    polygon = read_polygon(join(project.polygons_folder, filename))
    project.interior_regions.append([polygon,
                                     maxarea*project.scale_factor])

# Initial bounding polygon for data clipping 
project.bounding_polygon = read_polygon(join(project.polygons_folder,
                                             project.bounding_polygon_filename))
project.bounding_maxarea = project.bounding_polygon_maxarea*project.scale_factor

# Estimate the number of triangles                     
trigs_min = number_mesh_triangles(project.interior_regions,
                                  project.bounding_polygon,
                                  project.bounding_maxarea)

print 'min estimated number of triangles', trigs_min