NAME
Physics::Balls::World - a surface, its walls, noses and gates, and the constants
VERSION
Version 0.01
SYNOPSIS
my $world = Physics::Balls::World->from_table($table,
mu => { s => 0.2, r => 0.015, sp => 0.044 },
e => { bb => 0.95, c => 0.8, cf => 0.2, rc => 0.7 },
vmax => 8,
);
# or straight from geometry you built yourself, in metres
my $world = Physics::Balls::World->new(L => 2.54, W => 1.27, R => 0.028575,
walls => \@walls, noses => \@noses, gates => \@gates);DESCRIPTION
Everything the engine needs to know before a strike. A world is built once and shared between shots; the C engine behind it is created on the first strike and freed with the world.
ATTRIBUTES
L
W
R
The playing area and the ball radius, metres.
g
Gravity, default 9.81.
vmax
The speed of a full-power strike, metres per second, default 8.
mu
s sliding, r rolling and sp spinning friction, defaults 0.2, 0.02 and 0.044.
e
bb ball-ball restitution, c cushion restitution, cf cushion friction and rc the share of a ball's roll a cushion keeps, defaults 0.95, 0.8, 0.2 and 0.7.
walls
noses
gates
As Physics::Balls::Table returns them.
engine
The Physics::Balls::Engine, built lazily.
METHODS
from_table
my $world = Physics::Balls::World->from_table($table, %constants);description
The hash the engine is built from.