sanguis::creator::grid_crange
sanguis::collision::impl::make_range(
sanguis::creator::grid const &_grid,
sanguis::collision::center const _center,
sanguis::collision::radius const _radius
)
{
sanguis::creator::difference_type const tile_size(
fcppt::cast::to_signed(
sanguis::creator::tile_size::value
)
);
sanguis::creator::min const lower(
fcppt::container::grid::clamped_min(
fcppt::math::vector::structure_cast<
sanguis::creator::signed_pos,
fcppt::cast::float_to_int_fun
>(
fcppt::math::vector::map(
_center.get()
-
_radius.get()
,
fcppt::boost_units_value{}
)
)
/
tile_size
)
);
sanguis::creator::sup const upper(
fcppt::container::grid::clamped_sup_signed(
fcppt::math::vector::ceil_div_signed(
fcppt::math::vector::structure_cast<
sanguis::creator::signed_pos,
fcppt::cast::float_to_int_fun
>(
fcppt::math::vector::map(
_center.get()
+
_radius.get()
,
fcppt::boost_units_value{}
)
),
tile_size
),
_grid.size()
)
);
return
fcppt::container::grid::make_pos_ref_crange_start_end(
_grid,
lower,
upper
);
}
sanguis::creator::pos
sanguis::collision::impl::world::simple::grid_position(
sanguis::collision::center const _center
)
{
return
fcppt::math::vector::to_unsigned(
fcppt::math::vector::structure_cast<
sanguis::creator::signed_pos,
fcppt::cast::float_to_int_fun
>(
fcppt::math::vector::map(
_center.get(),
fcppt::boost_units_value{}
)
)
)
/
sanguis::creator::tile_size::value;
}
