Liquidfun links

2015-09-09 18:04:17 +01:00
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+## Limitations
+
+LiquidFun uses several approximations to simulate rigid body physics
+efficiently. This brings some limitations.
+
+Here are the current limitations:
+
+1. Stacking heavy bodies on top of much lighter bodies is not stable.
+Stability degrades as the mass ratio passes 10:1.
+
+2. Chains of bodies connected by joints may stretch if a lighter body is
+supporting a heavier body. For example, a wrecking ball connect to a chain of
+light weight bodies may not be stable. Stability degrades as the mass ratio
+passes 10:1.
+
+3. There is typically around 0.5cm of slop in shape versus shape collision.
+
+4. Continuous collision does not handle joints. So you may see joint
+stretching on fast moving objects.
+
+5. LiquidFun uses the symplectic Euler integration scheme. It does not
+reproduce parabolic motion of projectiles and has only first-order accuracy.
+However it is fast and has good stability.
+
+6. LiquidFun uses an iterative solver to provide real-time performance. You
+will not get precisely rigid collisions or pixel perfect accuracy. Increasing
+the iterations will improve accuracy.
+
+
+*This content is licensed under
+[Creative Commons Attribution 4.0](http://creativecommons.org/licenses/by/4.0/legalcode).
+For details and restrictions, please see the
+[Content License](md__content_license.html).*