AndrI may misunderstand your question, sorry about my English, I have misunderstood some questions already…
Hey Zeng Chen thanks a lot, but I could not manage to implement your solution.
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Houdini Indie and Apprentice » Interpolating values between points
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- zengchen
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Houdini Indie and Apprentice » Interpolating values between points
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- zengchen
- 77 posts
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primuv will interpolate the specified attr of points / vertices on this prim, based on the intrinsic uv of prim.
Attribute Inpterpolate SOP is a integrated SOP that contain primuv function to interpolate specified attrs from source prim.
My English is not good, so I have no ability to explain that what is the intrinsic uv of a prim.
May be there are some topics have talked about it already.
Attribute Inpterpolate SOP is a integrated SOP that contain primuv function to interpolate specified attrs from source prim.
My English is not good, so I have no ability to explain that what is the intrinsic uv of a prim.
May be there are some topics have talked about it already.
Edited by zengchen - Nov. 8, 2018 01:06:00
Houdini Lounge » HDA Handles Documentation
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- zengchen
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This is not a handle but a geo guide.
You could link the shape at “Guide Geometry” under the “Node” tab (so not the “Handles” tab)
But in this way, the guide will disappear when you select other node.
I find another method to always show the guide – give the shape a output node
You could link the shape at “Guide Geometry” under the “Node” tab (so not the “Handles” tab)
But in this way, the guide will disappear when you select other node.
I find another method to always show the guide – give the shape a output node
Edited by zengchen - Aug. 25, 2018 22:43:09
Houdini Lounge » HDAs with pictures in the parameters tab?
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- zengchen
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AndrI also wonder if there are some ways to scale the icon. It's tooooooo small…
Icons size is pretty small though. I guess there's no way to change the default size
Houdini Lounge » HDAs with pictures in the parameters tab?
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- zengchen
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Andr
Zeng, could you share the hip file by any chance? or just the code to make this reference to icon.
Here's the hip file.
The Labels will be used as tooltips when the user hovers over an icon.
So I casually give some number to Labels at this case.
Edited by zengchen - Aug. 13, 2018 09:55:34
Houdini Lounge » HDAs with pictures in the parameters tab?
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- zengchen
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I tried to use .ico format image, it doesn't work.
And now, I am using .png format image, it works…
Edited by zengchen - Aug. 13, 2018 09:12:39
Houdini Lounge » Link with?
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- zengchen
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C4D's Range Mapper in Xpresso also can be rebuild in Houdini, likes Maya's “link with” add a Ramp.
It's a case - If the cube rotates from -180 to +180, the sphere will raise from 0 to 5…
It's a case - If the cube rotates from -180 to +180, the sphere will raise from 0 to 5…
Houdini Lounge » C4D R20 announcement reactions
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- zengchen
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Though I come from C4D, I always appreciate high-efficiency black-box in C4D, most people only want a efficient tool.
I recreated many C4D tools in Houdini for convenience.
And I only be interested in R20's modified motion graphic module, want to see more videos about it. (New sound effector in R19 is amazing)
I have watched some simple demos and introductions about R20's field of mograph.
It can be rebuild in Houdini by Group Create SOP (keep in Bounding Regions) and xyzdist VEX func.
Just like attribute transfer SOP (but this SOP use metaball to calculate the transfer dist)
At last, I do like the appearance of R20's shader node.
I recreated many C4D tools in Houdini for convenience.
I have watched some simple demos and introductions about R20's field of mograph.
It can be rebuild in Houdini by Group Create SOP (keep in Bounding Regions) and xyzdist VEX func.
Just like attribute transfer SOP (but this SOP use metaball to calculate the transfer dist)
At last, I do like the appearance of R20's shader node.
Edited by zengchen - Aug. 11, 2018 12:31:43
Houdini Indie and Apprentice » Look At VOP node
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- zengchen
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tamte
lookat is quite old node/function and it seems to be based on the idea around camera look at constraint
since camera x-axis points right y-axis up, then in right handed coordinate system z-axis points back
so the forward camera direction is negative z (so -z)
i am suddenly enlightened…thanks a lot
Houdini Indie and Apprentice » Look At VOP node
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- zengchen
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my teacher only told me the Row-major when using Houdini…
i have never cared about the major order (╥_╥)
i have never cared about the major order (╥_╥)
Edited by zengchen - May 21, 2018 12:09:30
Houdini Indie and Apprentice » Look At VOP node
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- zengchen
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Dav_Rod
Thanks a lot for the info and specially for the file zengcheng 01. It was really useful work with it in the Vex form.
But my initial questions are still open:
1st: The rotation defined in the theory works like this:
(RotMatrix)x(Vector) as we can see in any Algebra book.
for the first question:
the vector in Houdini has three columns but not three rows…
Edited by zengchen - May 21, 2018 11:31:31
Houdini Indie and Apprentice » Look At VOP node
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- zengchen
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Look at function:
http://www.sidefx.com/docs/houdini/vex/functions/lookat.html [www.sidefx.com]
the target's new z-axis = normalize(vector from - vector to)
(I do not know why it is (from - to) but not (to - from)…)
if you use vector up, the target's new x-axis = normalize(cross(vector up, vector new z-axis))
Cross product function:
http://www.sidefx.com/docs/houdini/vex/functions/cross.html [www.sidefx.com]
look at function is similar to the first maketransform function:
>>> matrix3 maketransform(vector zaxis, vector yaxis)
http://www.sidefx.com/docs/houdini/vex/functions/maketransform.html [www.sidefx.com]
http://www.sidefx.com/docs/houdini/vex/functions/lookat.html [www.sidefx.com]
the target's new z-axis = normalize(vector from - vector to)
(I do not know why it is (from - to) but not (to - from)…)
if you use vector up, the target's new x-axis = normalize(cross(vector up, vector new z-axis))
Cross product function:
http://www.sidefx.com/docs/houdini/vex/functions/cross.html [www.sidefx.com]
look at function is similar to the first maketransform function:
>>> matrix3 maketransform(vector zaxis, vector yaxis)
http://www.sidefx.com/docs/houdini/vex/functions/maketransform.html [www.sidefx.com]
Edited by zengchen - May 21, 2018 03:14:41
Houdini Learning Materials » SOP and VEX book
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- zengchen
- 77 posts
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Olaf FinkbeinerI must give praise to this guy!
Most of the nature design stuff is also here as video tutorials:
https://www.youtube.com/playlist?list=PLzRzqTjuGIDgnYunqLTthY9RdVMTs6BzN [www.youtube.com]
He is a Japanese, but make English tutorials, although English is not my native language, I can understand it.
Houdini Indie and Apprentice » daily builds for Indie stopped working on win10
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- zengchen
- 77 posts
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Benjamin Lemoine
Hello ,
i have tried the last build 16.5.461
and it's the same , crash at start up
How do i get the log file to send to Sidefx ??
https://www.sidefx.com/forum/topic/15604/ [www.sidefx.com]
Technical Discussion » Something interesting with 338 daily build
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- zengchen
- 77 posts
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Technical Discussion » Set Font Text from Vex - Render Alphabet
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- zengchen
- 77 posts
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there is a parameter called ‘single pass’ in foreach end node
it can let you control which iteration will be displayed
gif… [i.imgur.com]
Besides, i do not work well with detail function…
oh. it is ‘details’ to get string value, i miss ‘s’…
Finally, i really recommend you to watch Ari Danesh's tutorial [vimeo.com], there are some useful info about font and foreach node…
it can let you control which iteration will be displayed
gif… [i.imgur.com]
oh. it is ‘details’ to get string value, i miss ‘s’…
Finally, i really recommend you to watch Ari Danesh's tutorial [vimeo.com], there are some useful info about font and foreach node…
Edited by zengchen - Aug. 27, 2017 11:46:02
Houdini Lounge » Setting Open CL device
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- zengchen
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it really works with the command HOUDINI_OCL_DEVICENUMBER = 0（or 1,2,3…）, i have changed the GPU for Houdini, Thank you!
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