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About cakeray

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  1. Thanks, vtrvtr! That's an interesting implementation! I will give it a try and see how well it works with my workflow.
  2. Hello, I am currently working on a digital asset and I seem to have hit a wall. I would like the user to be able to select the points (to be used within the hda) from the viewport. Similar to what you can do with a delete operator using the arrow. However I am not able to implement this particle interface element (see pictured…arrow circled) and was wondering if anyone has any ideas on how to make this happen. Thanks, Rushil
  3. Hello all, I'm currently working on a digital asset that creates sections from a given model. Each of these sections will have different values for different sections (the attribute values of all points within a section remain the same). Since the number of sections can vary, I've decided to go with the multiparm list to handle input. Since I've never used the multiparm before, I'm not sure how I can use these values within the HDA. From what I've been able to find here and on odforce, python seems like a good way to go. I've never used python in houdini so I'm a bit lost. How would I use python to accept the user values and set it for the points of the corresponding sections? Any help or leads will be extremely helpful. Pictures attached. Thanks, Rushil
  4. Affecting viscosity using heat field

    I'm currently trying to simulate (relatively) realistic melting. So I would like to simulate it based on the surrounding temperature rather than using animated geometry. My main aim is to simulate melting by creating various sections on the model with different viscosity values and have it melt at different rates using the surrounding temperature. I have taken a look at the gas temperature update dop but that hasn't really helped since I want to simulate heating and then cooling rather than just cooling. Any ideas/leads would be immensely helpful!
  5. Affecting viscosity using heat field

    I took a look at the file and that's not exactly what I'm looking for. I want to be able to create a more natural looking melting effect without using any external animated geometry. I'm looking to use heat (temperature) from the surrounding 3d space to influence the object. Sort of like using a pyro temperature to affect a flip simulation.. Any advice/ideas on how best to tackle this?
  6. Affecting viscosity using heat field

    I have already gotten started and I'm using the Gas Particle to Field operator to simulate an external heat field. However, with my current set up it looks more like a high temperature object that is slowly cooling over time rather than one that is being heated and then cooled like in the video link above. Any ideas what I can do to get it working right? sample_heat_field_v2.hipnc
  7. Heat melting squid

    Hi Ivan, Do you happen to have the hip file for your simulation? I would love to study it since I am also working on something similar!
  8. Hello,I'm trying to recreate the melting effect using microsolvers as seen in this video..https://www.youtube.com/watch?time_continue=8&v=KIcpzPK3b1g [www.youtube.com]Any tips or advice on how to get started with this would help greatly!Thanks
  9. Velocity loss in flip

    Thank you for pointing out about the "thickness" tab. I hadn't noticed that it was set at 0.5 instead of 0, so that helped solve one of my problems. For my lava to continue flowing, I did try a velocity volume at the base where the particles stop moving. While this does work, it leads to the flow of lava to look quite unnatural! Is there anything else I could try to get this to work. I have tried very low viscosity values as well (and sometimes even switching off viscosity altogether) but the issue remains.
  10. Velocity loss in flip

    Hello all! I have been working on a lava simulation for the past month and I began by following the popular houdini lava tutorial by Ben Watts. For my scene I've modelled a simply environment for the simulation to interact with. So far I'm pretty happy with the viscosity and temperature variation I have achieved. One problem that I have been having is that the lava doesn't seem to flow when it reaches the foot of the "mountain". The particles die and stop where they are. How do I fix it? I would really like the lava to flow towards the camera. The second issue I have noticed is that the fluid doesn't exactly collide with the surface. I mean to say, there is a collision taking place, but it is offset from the surface of the "mountain". How do I get rid of this as well? Any help and advice on this matter would be greatly appreciated! Thanks in advance! Rushil slope2.hipnc
  11. High Res Fliptank Collapsing

    I have attached the file I'm currently working on with the particle separation value of 0.01 where it can be seen collapsing. Particle separation of 0.05 works fine although it is lower in resolution bubbles1.hipnc
  12. High Res Fliptank Collapsing

    Hi, I am currently working on a project that involves a lava simulation. My inspiration for this project is the behaviour of the lava in this video: https://www.youtube.com/watch?v=zFIWWM0Iv-U I have set up a fluid tank, which a grid below emitting the bubbles. While the final shape of the fluid is not exactly what I want, that is not where the issue lies. My main issue is that my fliptank "collapses" as I increase the particle separation. The fliptank works at particle separation = 0.05, but completely "collapses" at a value of 0.01. The rest of the setup is exactly the same and no other values have been changed. If there is anyone here who has faced similar issues, or knows what the problem could be then I would really appreciate your help! Rushil
  13. Bubbling Lava

    Hello, I am working on a simulation which requires lava to bubble. I want the effect to look similar to I have attached my file. The fluid is deforming as the spheres rise to the surface, however it isn't "exploding" the way it does in the video. I'm not really sure what I'm doing wrong or what exactly I'm supposed to do to get the lava bubles to explode. Any tips or suggestions will be extremely helpful since I am fairly new to flip fluids! Thanks in advance bubbles1.hipnc