mirror of https://github.com/bjornbytes/lovr.git
139808cab0
Tightness parameter is amount of force is exerted on collider to resolve collisions and enforce joint operation. Low values make joints loose, high values make it tight and can cause collider to overshot the joint target. With tightness set to 0 the joint loses its function. Going above 1 puts even more energy into joint oscillations. Tightness parameter is called ERP in ODE manual. The responseTime affects the time constant of physics simulation, both for collisions and for joint inertia. Low responseTime values make simulation tight and fast, higher values make it sluggish. For collisions it affects how fast penetration is resolved, with higher values resulting in spongy objects with more surface penetration and slower collision resolving. For joints the responseTime is similar to inertia, with higher responseTime values resulting in slow oscillations. The oscillation frequency is also affected by collider mass, so responseTime can be used to tweak the joint to get desired frequency with specific collider mass. Values higher than 1 are often desirable, especially for very light objects. Unlike tightness, responseTime is tweaked in orders of magnitude with useful values (depending on mass) being between 10^-8 and 10^8. Both parameters can be applied to World for simulation-wide usage, or specified per-joint in case of distance and ball joints. Other joints don't allow customizing these parameters, and will use World settings instead.. |
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| physics.c | ||
| physics.h | ||