Hi everyone~
I have a question of simulation leaves's fall. I uese the particle to copy leaves , but the animation down on floor is bad…not natural,as the file shows.Because I use the “Stop on Collision”,and the particle falls on floor suddenly and not aclinic.
I thought two ways trying to finish this question:
1.Keep the animation before collision by pop , use dop to solver the down animation , I want to send the particle's information(position and velocity) to dop just when they have collided every frame. I used a group named “down” to send them to dop.
But a problem comes , the RBDPointObject node shows me the “Creation Frame”'s explaination : The object is created only when the current frame number is equal to this parameter value. So , in this meaning ,the down group just solvers some particles that survive at the “Creation Frame” ,and no more particles could be send to dop even they are added in down group after “Creation Frame”.
Maybe it can be done with copy object and other node ,but I'm not strong in vex..
2.Keep the animation before collision by pop ,just use vop to make the particles aclinic before down on the floor.This process effects between a appointed height value(e.g. 0.5) and 0 of floor's height.
But I use the torque to animation rotation of the leaves ,it changes the angular velocity of the particles ,the angular velocity changes the w attribute of the particles , in vop that's a float value..I can't understand it.So,this way is in trouble for me…The details is in the file.
Maybe the second way is easier ,but I have some questions to finish it.
And I need some other advance to add the details to make the simulation naturally
I need help ,thank you
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Technical Discussion » About particle's instance fall down
- newfood001
- 12 posts
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Houdini Indie and Apprentice » About Cloud Rendering
- newfood001
- 12 posts
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Houdini Indie and Apprentice » About Cloud Rendering
- newfood001
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Yeah , I'm lucky ! When I come back from other work , well , so many usefull helps !
Tomas , thank you for your help from Saturday ! Your file helps me to make the cloud model better ~ Thank you very much ^^
Jeff , thank you ! Your file helps me to use the bake volume node. Ya , I saw this node from the other cloud help , but I didn't notice it…-.- I'll try more with your suggestion ~
circusmonkey , thank you for your attention ! You walks farther than me in Houdini.
Ya, I'll try, thank you all~
Tomas , thank you for your help from Saturday ! Your file helps me to make the cloud model better ~ Thank you very much ^^
Jeff , thank you ! Your file helps me to use the bake volume node. Ya , I saw this node from the other cloud help , but I didn't notice it…-.- I'll try more with your suggestion ~
circusmonkey , thank you for your attention ! You walks farther than me in Houdini.
Ya, I'll try, thank you all~
Houdini Indie and Apprentice » About Cloud Rendering
- newfood001
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Hi~All~
I'm sad. Yes , very sad.
They are all cloud , but which I want to kick to the Pluto awary from the earth is my “cloud”….
I use the mountain node , copy node , isooffset node , volume ramp node, and the billowy_smoke node (I want to use the billowy_smoke to simulate the cloud's animation) ….My God…Can you image a picture of cotton? Yes, it's my cloud…….
The right picture is Phunt's cloud.You can see here:
http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&t=18325&highlight= [sidefx.com]
I want to make my cloud beautiful . The right picture's cloud is what I want.Can someone give me some suggestion about the shader and the light?Thank you!
I'm sad. Yes , very sad.
They are all cloud , but which I want to kick to the Pluto awary from the earth is my “cloud”….
I use the mountain node , copy node , isooffset node , volume ramp node, and the billowy_smoke node (I want to use the billowy_smoke to simulate the cloud's animation) ….My God…Can you image a picture of cotton? Yes, it's my cloud…….
The right picture is Phunt's cloud.You can see here:
http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&t=18325&highlight= [sidefx.com]
I want to make my cloud beautiful . The right picture's cloud is what I want.Can someone give me some suggestion about the shader and the light?Thank you!
Houdini Indie and Apprentice » About Volume Rendering
- newfood001
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Ya,you are a greate expert!
For me,the nightmare is over~ Thank you!
————————————————————–
In my thought,you get the position,the volume space from the geometry,and use the “rest position” to stick the volume shader.
Your thought of the poblem about eyes is right.In my thought,it's a sample problem , so if I import eyes and the problem will be corrected.
I'm poor on Houdini's kernel now,although I couldn't understand something of your file now,e.g. how some connections run,but your method is usefull and I'll try to understand that and be strong in Houdini~
Thank you for your help in this week ~
—————————————————————
Ha,I'll do some cloud animation test~But the GI do not work for volume,and the shading quality is not very good.
Try…Try…Try… :roll:
For me,the nightmare is over~ Thank you!
————————————————————–
In my thought,you get the position,the volume space from the geometry,and use the “rest position” to stick the volume shader.
Your thought of the poblem about eyes is right.In my thought,it's a sample problem , so if I import eyes and the problem will be corrected.
I'm poor on Houdini's kernel now,although I couldn't understand something of your file now,e.g. how some connections run,but your method is usefull and I'll try to understand that and be strong in Houdini~
Thank you for your help in this week ~
—————————————————————
Ha,I'll do some cloud animation test~But the GI do not work for volume,and the shading quality is not very good.
Try…Try…Try… :roll:
Houdini Indie and Apprentice » About Volume Rendering
- newfood001
- 12 posts
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Ya,I see.You are right~
Glad to see you now
If you need my sequnce file,could you please tell me your mail?@.@
If you are not in your country but in America,I wish you have a good sleep
Glad to see you now
If you need my sequnce file,could you please tell me your mail?@.@
If you are not in your country but in America,I wish you have a good sleep
Houdini Indie and Apprentice » About Volume Rendering
- newfood001
- 12 posts
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tamte,you are a great man!Thank you for all~
I'd like to config it,but….Every morining I take a new question to you….Did I be cursed?@.@:shock: :shock: :shock:
——————————————————
I saw the file from your help,in my thought,you remove the object's transform,then make it's volume rest position,at last give back the transform.In the file, I can't understand the get_max_bbox's details,but I know that it supplys “density” the volume size .
The “amen” object sequence's volume texture looks like correct,so I take another test,a walking body's object sequnce.Then a new question appended…
The images are here.
I'm thinking about the reason,and the picture is my explain for the texture moving…
The “amen” object sequence's volume texture looks like correct,in my thought,because the breadth of the object-pivot's change is small…
Maybe you need my obj sequnce,but it's too big(20M).So…I'd better send it by email@.@
Am I right or not?Waiting for help-.- :idea: :idea: :idea: :idea:
I'd like to config it,but….Every morining I take a new question to you….Did I be cursed?@.@:shock: :shock: :shock:
——————————————————
I saw the file from your help,in my thought,you remove the object's transform,then make it's volume rest position,at last give back the transform.In the file, I can't understand the get_max_bbox's details,but I know that it supplys “density” the volume size .
The “amen” object sequence's volume texture looks like correct,so I take another test,a walking body's object sequnce.Then a new question appended…
The images are here.
I'm thinking about the reason,and the picture is my explain for the texture moving…
The “amen” object sequence's volume texture looks like correct,in my thought,because the breadth of the object-pivot's change is small…
newfood001
The file of “amen.rar” is the obj sequence of a box's animation from Maya.I import it to Houdini,so you can take it as a blend-shape animation.So…The xform doesn't change..When the object “moves”,the texture will still stay or not?
Maybe you need my obj sequnce,but it's too big(20M).So…I'd better send it by email@.@
Am I right or not?Waiting for help-.- :idea: :idea: :idea: :idea:
Houdini Indie and Apprentice » About Volume Rendering
- newfood001
- 12 posts
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Thank you all~ I get it.
The problem is that the geometry of obj sequence isn't a single one…OK,just use the first obj to make the rest object.
The problem is that the geometry of obj sequence isn't a single one…OK,just use the first obj to make the rest object.
Houdini Indie and Apprentice » About Volume Rendering
- newfood001
- 12 posts
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Thank you !
Ha,that's ok,the texture do not move again
———————————————————–
For my next test,I import obj sequence from Maya instead of the animation to Houdini.
But a new question occured…
1.The sequence rendering do not work.
I can render with the default “view Mentra”,but if I create a Mentra render in ropnet or Out,it doesn't work…It stays at the first frame for a long time,maybe 2012 comes it still stay at frame 1….
2.The file of “amen.rar” is the obj sequence of a box's animation from Maya.I import it to Houdini,so you can take it as a blend-shape animation.So…The xform doesn't change..When the object “moves”,the texture will still stay or not?
Thank you all~
Need for new help :idea: :idea: :idea: :idea: :idea:
Ha,that's ok,the texture do not move again
———————————————————–
For my next test,I import obj sequence from Maya instead of the animation to Houdini.
But a new question occured…
1.The sequence rendering do not work.
I can render with the default “view Mentra”,but if I create a Mentra render in ropnet or Out,it doesn't work…It stays at the first frame for a long time,maybe 2012 comes it still stay at frame 1….
2.The file of “amen.rar” is the obj sequence of a box's animation from Maya.I import it to Houdini,so you can take it as a blend-shape animation.So…The xform doesn't change..When the object “moves”,the texture will still stay or not?
Thank you all~
Need for new help :idea: :idea: :idea: :idea: :idea:
Edited by - April 22, 2010 21:01:15
Houdini Indie and Apprentice » About Volume Rendering
- newfood001
- 12 posts
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buki
hi!
Add rest position SOP to your object
ah…
I used the rest position,but the smoke shader still move now…
The details are in the file of “test3” and the picture.
Thank you! -.-But I need more help=。=
I saw the help file of the rest position,it used the wood shader.I don't know whether it is a 3D shader=.= Just my thought:)
Waiting for more help…=。=
Houdini Indie and Apprentice » About Volume Rendering
- newfood001
- 12 posts
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Houdini Indie and Apprentice » About Volume Rendering
- newfood001
- 12 posts
- Offline
hi~
I have a hard question for me but easy for you,so I come here for help
ok.I create a billow_smoke shader for a moving object,and the render images show that the smoke is moving in the space.
How to stop the smoke moving with the moving object? I just need it's own offset..
In test2.hip,it's a xform's moving sphere.I also need a method for a blending object.
In maya, I can create a texture_reference_object,but in houdini…
-.-…Thank you.
I have a hard question for me but easy for you,so I come here for help
ok.I create a billow_smoke shader for a moving object,and the render images show that the smoke is moving in the space.
How to stop the smoke moving with the moving object? I just need it's own offset..
In test2.hip,it's a xform's moving sphere.I also need a method for a blending object.
In maya, I can create a texture_reference_object,but in houdini…
-.-…Thank you.
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