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attractor physics works!

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nek0 2017-11-07 23:04:43 +01:00
parent 5bfda75598
commit 98ecb57cc6
2 changed files with 15 additions and 14 deletions
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2
examples/example02/Init.hs
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@ -124,7 +124,7 @@ initPhysics = do
disp <- newCollisionDispatcher config disp <- newCollisionDispatcher config
solver <- newSequentialImpulseConstraintSolver solver <- newSequentialImpulseConstraintSolver
world <- newDiscreteDynamicsWorld disp bp solver config world <- newDiscreteDynamicsWorld disp bp solver config
setGravity world (V3 0 (-10) 0) setGravity world (V3 0 0 0)
return $ Physics bp config disp solver world return $ Physics bp config disp solver world
initPhysicsObjects :: [V3 Float] -> IO PhysicsObjects initPhysicsObjects :: [V3 Float] -> IO PhysicsObjects

25
examples/example02/Main.hs
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@ -52,19 +52,20 @@ update dt = do
sd <- getAffection sd <- getAffection
let phys = physics sd let phys = physics sd
physos = physicsObjects sd physos = physicsObjects sd
-- mapM_ (\smallBall -> do mapM_ (\smallBall -> do
-- ms1 <- liftIO $ getMotionState (bodyRigidBody smallBall) ms1 <- liftIO $ getMotionState (bodyRigidBody smallBall)
-- ms2 <- liftIO $ getMotionState (bodyRigidBody $ poBigBall physos) ms2 <- liftIO $ getMotionState (bodyRigidBody $ poBigBall physos)
-- r1 <- liftIO $ return . fmap realToFrac =<< getPosition ms1 r1 <- liftIO $ return . fmap realToFrac =<< getPosition ms1
-- r2 <- liftIO $ return . fmap realToFrac =<< getPosition ms2 r2 <- liftIO $ return . fmap realToFrac =<< getPosition ms2
-- let g = 0.0000000000667300 let g = 0.0000000000667300
-- m1 = bodyMass smallBall m1 = bodyMass smallBall
-- m2 = bodyMass (poBigBall physos) -- m2 = bodyMass (poBigBall physos)
-- eta_sq = 0.1 ^ 2 m2 = 1000000000000000
-- force = (g * m1 * m2 *^ (r1 - r2)) ^/ eta_sq = 0.1 ^ 2
-- (((r1 - r2) `dot` (r1 - r2)) + eta_sq) force = (g * m2 * m1 *^ (r2 - r1)) ^/
-- liftIO $ applyCentralForce (bodyRigidBody smallBall) force ((sqrt (((r2 - r1) `dot` (r2 - r1)) + eta_sq)) ^ 3)
-- ) (poSmallBalls physos) liftIO $ applyCentralForce (bodyRigidBody smallBall) force
) (poSmallBalls physos)
liftIO $ stepSimulation (pWorld phys) dt 10 Nothing liftIO $ stepSimulation (pWorld phys) dt 10 Nothing
posrots <- mapM ((\ball -> do posrots <- mapM ((\ball -> do
ms <- liftIO $ getMotionState ball ms <- liftIO $ getMotionState ball