Could you tell me the cause?
・The “Assume Uniform Radius” checkbox is unchecked
・There are sufficient Substep counts
・@mass, @pscale, and water absorption are updating as expected
Node connections are as shown in images 3-5.
Unfortunately, I cannot provide detailed code or the hip file, but the implementation flow is as follows:
1. In ”AttributeWrangle1”, for particles touching the cloth (obtained via `inpointgroup(0, “cloth”, @ptnum)`), store the absorbed mass using a formula into the `@mass_loss` attribute.
2. In "AttributeWrangle2", update @pscale and @mass based on @mass_loss as follows:
if (inpointgroup(0, “fluid”, @ptnum)) { float loss = f@mass_loss; float new_m = max(old_m - loss, 1e-7); float old_m = max(@mass, 1e-7); float ratio = clamp(new_m / old_m, 0.0, 1.0); @pscale *= pow(ratio, 1.0/3.0); @mass = new_m; }
Please tell me how to update @mass and @pscale without causing the simulation to explode.