def sea_depth(world, sea_level):
sea_depth = [[sea_level - world.elevation['data'][y][x]
for x in range(world.width)] for y in range(world.height)]
for y in range(world.height):
for x in range(world.width):
if world.tiles_around((x, y), radius=1, predicate=world.is_land):
sea_depth[y][x] = 0
elif world.tiles_around((x, y), radius=2, predicate=world.is_land):
sea_depth[y][x] *= 0.3
elif world.tiles_around((x, y), radius=3, predicate=world.is_land):
sea_depth[y][x] *= 0.5
elif world.tiles_around((x, y), radius=4, predicate=world.is_land):
sea_depth[y][x] *= 0.7
elif world.tiles_around((x, y), radius=5, predicate=world.is_land):
sea_depth[y][x] *= 0.9
sea_depth = anti_alias(sea_depth, 10)
min_depth, max_depth = matrix_min_and_max(sea_depth)
sea_depth = [[rescale_value(sea_depth[y][x], min_depth,
max_depth, 0.0, 1.0)
for x in range(world.width)] for y in
range(world.height)]
return sea_depth
def sea_depth(world, sea_level):
sea_depth = [[
sea_level - world.elevation['data'][y][x] for x in range(world.width)
] for y in range(world.height)]
for y in range(world.height):
for x in range(world.width):
if world.tiles_around((x, y), radius=1, predicate=world.is_land):
sea_depth[y][x] = 0
elif world.tiles_around((x, y), radius=2, predicate=world.is_land):
sea_depth[y][x] *= 0.3
elif world.tiles_around((x, y), radius=3, predicate=world.is_land):
sea_depth[y][x] *= 0.5
elif world.tiles_around((x, y), radius=4, predicate=world.is_land):
sea_depth[y][x] *= 0.7
elif world.tiles_around((x, y), radius=5, predicate=world.is_land):
sea_depth[y][x] *= 0.9
sea_depth = anti_alias(sea_depth, 10)
min_depth, max_depth = matrix_min_and_max(sea_depth)
sea_depth = [[
rescale_value(sea_depth[y][x], min_depth, max_depth, 0.0, 1.0)
for x in range(world.width)
] for y in range(world.height)]
return sea_depth
def test_rescale_value(self):
self.assertAlmostEqual(0.0, rescale_value(0.0, 0.0, 1.0, 0.0, 10.0))
self.assertAlmostEqual(2.5, rescale_value(0.25, 0.0, 1.0, 0.0, 10.0))
self.assertAlmostEqual(5.0, rescale_value(0.5, 0.0, 1.0, 0.0, 10.0))
self.assertAlmostEqual(7.5, rescale_value(0.75, 0.0, 1.0, 0.0, 10.0))
self.assertAlmostEqual(10.0, rescale_value(1.0, 0.0, 1.0, 0.0, 10.0))
self.assertAlmostEqual(5.0, rescale_value(0.0, 0.0, 1.0, 5.0, 10.0))
self.assertAlmostEqual(6.25, rescale_value(0.25, 0.0, 1.0, 5.0, 10.0))
self.assertAlmostEqual(7.5, rescale_value(0.5, 0.0, 1.0, 5.0, 10.0))
self.assertAlmostEqual(8.75, rescale_value(0.75, 0.0, 1.0, 5.0, 10.0))
self.assertAlmostEqual(10.0, rescale_value(1.0, 0.0, 1.0, 5.0, 10.0))
self.assertAlmostEqual(-10.0, rescale_value(0.0, 0.0, 1.0, -10.0, 10.0))
self.assertAlmostEqual(-5.0, rescale_value(0.25, 0.0, 1.0, -10.0, 10.0))
self.assertAlmostEqual(0.0, rescale_value(0.5, 0.0, 1.0, -10.0, 10.0))
self.assertAlmostEqual(5.0, rescale_value(0.75, 0.0, 1.0, -10.0, 10.0))
self.assertAlmostEqual(10.0, rescale_value(1.0, 0.0, 1.0, -10.0, 10.0))
