[3644] | 1 | """Create mesh and time boundary for the Okushiri island validation |
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[2229] | 2 | """ |
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| 3 | |
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| 4 | #!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 5 | # Assume that the root AnuGA dir is included in your pythonpath |
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| 6 | #!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! |
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| 7 | |
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[3647] | 8 | from Numeric import array, zeros, Float, allclose |
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| 9 | |
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[3535] | 10 | from anuga.pmesh.mesh import * |
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| 11 | from anuga.coordinate_transforms.geo_reference import Geo_reference |
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[2229] | 12 | |
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[3647] | 13 | import project |
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| 14 | |
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| 15 | |
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| 16 | def prepare_timeboundary(filename): |
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| 17 | """Converting benchmark 2 time series to NetCDF tms file. |
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| 18 | This is a 'throw-away' code taylor made for files like |
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| 19 | 'Benchmark_2_input.txt' from the LWRU2 benchmark |
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| 20 | """ |
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| 21 | |
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| 22 | print 'Preparing time boundary from %s' %filename |
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| 23 | from Numeric import array |
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| 24 | |
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| 25 | fid = open(filename) |
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| 26 | |
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| 27 | #Skip first line |
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| 28 | line = fid.readline() |
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| 29 | |
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| 30 | #Read remaining lines |
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| 31 | lines = fid.readlines() |
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| 32 | fid.close() |
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| 33 | |
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| 34 | |
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| 35 | N = len(lines) |
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| 36 | T = zeros(N, Float) #Time |
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| 37 | Q = zeros(N, Float) #Values |
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| 38 | |
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| 39 | for i, line in enumerate(lines): |
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| 40 | fields = line.split() |
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| 41 | |
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| 42 | T[i] = float(fields[0]) |
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| 43 | Q[i] = float(fields[1]) |
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| 44 | |
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| 45 | |
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| 46 | #Create tms file |
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| 47 | from Scientific.IO.NetCDF import NetCDFFile |
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| 48 | |
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| 49 | outfile = filename[:-4] + '.tms' |
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| 50 | print 'Writing to', outfile |
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| 51 | fid = NetCDFFile(outfile, 'w') |
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| 52 | |
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| 53 | fid.institution = 'Geoscience Australia' |
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| 54 | fid.description = 'Input wave for Benchmark 2' |
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| 55 | fid.starttime = 0.0 |
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| 56 | fid.createDimension('number_of_timesteps', len(T)) |
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| 57 | fid.createVariable('time', Float, ('number_of_timesteps',)) |
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| 58 | fid.variables['time'][:] = T |
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| 59 | |
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| 60 | fid.createVariable('stage', Float, ('number_of_timesteps',)) |
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| 61 | fid.variables['stage'][:] = Q[:] |
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| 62 | |
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| 63 | fid.createVariable('xmomentum', Float, ('number_of_timesteps',)) |
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| 64 | fid.variables['xmomentum'][:] = 0.0 |
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| 65 | |
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| 66 | fid.createVariable('ymomentum', Float, ('number_of_timesteps',)) |
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| 67 | fid.variables['ymomentum'][:] = 0.0 |
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| 68 | |
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| 69 | fid.close() |
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| 70 | |
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| 71 | |
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[2229] | 72 | #------------------------------------------------------------- |
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| 73 | if __name__ == "__main__": |
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| 74 | |
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[3647] | 75 | #Preparing points |
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| 76 | #(Only when using original Benchmark_2_Bathymetry.txt file) |
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| 77 | #from anuga.abstract_2d_finite_volumes.data_manager import xya2pts |
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| 78 | #xya2pts(project.bathymetry_filename, verbose = True, |
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| 79 | # z_func = lambda z: -z) |
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[2229] | 80 | |
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[3647] | 81 | |
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| 82 | |
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| 83 | |
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| 84 | |
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| 85 | # Prepare time boundary |
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| 86 | prepare_timeboundary(project.boundary_filename) |
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| 87 | |
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| 88 | |
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| 89 | # Create Mesh |
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| 90 | |
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[2229] | 91 | #Basic geometry |
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| 92 | |
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| 93 | xleft = 0 |
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| 94 | xright = 5.448 |
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| 95 | ybottom = 0 |
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| 96 | ytop = 3.402 |
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| 97 | |
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| 98 | #Outline |
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| 99 | point_sw = [xleft, ybottom] |
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| 100 | point_se = [xright, ybottom] |
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| 101 | point_nw = [xleft, ytop] |
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| 102 | point_ne = [xright, ytop] |
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| 103 | |
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| 104 | #Midway points (left) |
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| 105 | point_mtop = [xleft + (xright-xleft)/3+1, ytop] |
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| 106 | point_mbottom = [xleft + (xright-xleft)/3+1, ybottom] |
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| 107 | |
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| 108 | |
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| 109 | geo = Geo_reference(xllcorner = xleft, |
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| 110 | yllcorner = ybottom) |
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| 111 | |
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| 112 | |
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| 113 | print "***********************" |
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| 114 | print "geo ref", geo |
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| 115 | print "***********************" |
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| 116 | |
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| 117 | m = Mesh(geo_reference=geo) |
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| 118 | |
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| 119 | #Boundary |
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| 120 | dict = {} |
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| 121 | dict['points'] = [point_se, #se |
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| 122 | point_ne, |
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| 123 | point_mtop, |
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| 124 | point_nw, |
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| 125 | point_sw, |
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| 126 | point_mbottom] |
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| 127 | |
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| 128 | |
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| 129 | dict['segments'] = [[0,1], [1,2], [2,3], [3,4], |
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| 130 | [4,5], [5,0], #The outer border |
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| 131 | [2,5]] #Separator |
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| 132 | |
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| 133 | dict['segment_tags'] = ['wall', |
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| 134 | 'wall', |
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| 135 | 'wall', |
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| 136 | 'wave', |
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| 137 | 'wall', |
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| 138 | 'wall', |
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| 139 | ''] #Interior |
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| 140 | |
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| 141 | |
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| 142 | m.addVertsSegs(dict) |
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| 143 | |
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| 144 | |
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| 145 | |
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| 146 | |
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| 147 | |
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| 148 | #Localised refined area for gulleys |
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| 149 | dict = {} |
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| 150 | xl = 4.8 |
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| 151 | xr = 5.3 |
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| 152 | yb = 1.6 |
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| 153 | yt = 2.3 |
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| 154 | p0 = [xl, yb] |
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| 155 | p1 = [xr, yb] |
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| 156 | p2 = [xr, yt] |
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| 157 | p3 = [xl, yt] |
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| 158 | |
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| 159 | dict['points'] = [p0, p1, p2, p3] |
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| 160 | dict['segments'] = [[0,1], [1,2], [2,3], [3,0]] |
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| 161 | dict['segment_tags'] = ['', '', '', ''] |
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| 162 | m.addVertsSegs(dict) |
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| 163 | |
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| 164 | #Island area |
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| 165 | island_0 = [xleft + 2*(xright-xleft)/3+1.2, ytop-0.5] |
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| 166 | island_1 = [xleft + 2*(xright-xleft)/3+0.5, ybottom + 2*(ytop-ybottom)/3] |
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| 167 | island_2 = [xleft + (xright-xleft)/2+0.3, ybottom + 2*(ytop-ybottom)/3-0.3] |
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| 168 | island_3 = [xleft + (xright-xleft)/2+0.3, ybottom + (ytop-ybottom)/3+0.3] |
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| 169 | island_4 = [xleft + 2*(xright-xleft)/3+0.4, ybottom + (ytop-ybottom)/3-0.3] |
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| 170 | island_5 = [xleft + 2*(xright-xleft)/3+1.2, ybottom+0.2] |
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| 171 | island_6 = [xl-.01, yb] #OK |
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| 172 | island_7 = [xl-.01, yt] #OK |
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| 173 | |
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| 174 | |
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| 175 | dict['points'] = [island_0, island_1, island_2, |
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| 176 | island_3, island_4, island_5, |
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| 177 | #p0, p3] |
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| 178 | island_6, island_7] |
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| 179 | |
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| 180 | |
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| 181 | dict['segments'] = [[0,1], [1,2], [2,3], [3,4], |
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| 182 | [4,5], [5,6], [6,7], [7,0]] |
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| 183 | |
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| 184 | dict['segment_tags'] = ['', '', '', '', '', '', '', ''] |
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| 185 | |
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| 186 | |
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| 187 | m.addVertsSegs(dict) |
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| 188 | |
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| 189 | |
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| 190 | # |
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[3636] | 191 | |
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[2229] | 192 | base_resolution = 1 |
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| 193 | |
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| 194 | ocean = m.addRegionEN(xleft+.1, ybottom+.1) |
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| 195 | ocean.setMaxArea(0.1*base_resolution) |
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| 196 | |
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| 197 | mid = m.addRegionEN(point_mbottom[0]+.1, ybottom+.1) |
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| 198 | mid.setMaxArea(0.0005*base_resolution) |
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[3636] | 199 | |
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[2229] | 200 | |
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| 201 | inner = m.addRegionEN(island_3[0]+.1, island_3[1]+.1) |
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[3636] | 202 | inner.setMaxArea(0.0003*base_resolution) |
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[2229] | 203 | |
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| 204 | |
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| 205 | gulleys = m.addRegionEN(p0[0]+0.1, p0[1]+0.1) |
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[3637] | 206 | gulleys.setMaxArea(0.00002*base_resolution) |
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[2426] | 207 | |
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| 208 | |
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[3636] | 209 | # From r 1709 11 August 2005 |
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| 210 | #base_resolution = 100 |
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| 211 | # |
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| 212 | #ocean = m.addRegionEN(xleft+.1, ybottom+.1) |
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| 213 | #ocean.setMaxArea(0.01*base_resolution) |
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| 214 | # |
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| 215 | #mid = m.addRegionEN(point_mbottom[0]+.1, ybottom+.1) |
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| 216 | #mid.setMaxArea(0.001*base_resolution) |
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[2426] | 217 | |
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[3636] | 218 | #inner = m.addRegionEN(island_3[0]+.1, island_3[1]+.1) |
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| 219 | #inner.setMaxArea(0.0001*base_resolution) |
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| 220 | |
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| 221 | |
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| 222 | #gulleys = m.addRegionEN(p0[0]+0.1, p0[1]+0.1) |
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| 223 | #gulleys.setMaxArea(0.00001*base_resolution) |
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| 224 | |
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| 225 | |
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[2229] | 226 | m.generateMesh('pzq28.0za1000000a') |
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| 227 | |
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[2425] | 228 | import project |
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| 229 | m.export_mesh_file(project.mesh_filename) |
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[2229] | 230 | |
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