I want to achieve a simple ‘additive’ shader effect for my objects in Mantra, but as I'm quite new to shading and rendering in Houdini I don't know where to start.
Attached is an image showcasing the desired effect.
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Technical Discussion » Simple additive render for object in Mantra.
- joostjordens
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Houdini Indie and Apprentice » Delete faces not visible to direction.
- joostjordens
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Thank you @BabaJ! That's definitely an useful tool. However I'm still curious how I can create a group selection for faces that are not visible to a certain projection. For my specific example (image) I want to preserve the normal as is in the merge node, but I want to get rid of the geometry underneath for optimization purposes. Cheers!
Edited by joostjordens - Oct. 31, 2018 15:08:42
Houdini Indie and Apprentice » Delete faces not visible to direction.
- joostjordens
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Hey guys,
Still learning, and new question regarding deleting primitives that are not visible from above. Note: I don't want camera(angle) culling. I just want to delete everything not visible from above. Here's an image illustrating it. Test case would be two deformed grids. *Typo in img: RayY*
Still learning, and new question regarding deleting primitives that are not visible from above. Note: I don't want camera(angle) culling. I just want to delete everything not visible from above. Here's an image illustrating it. Test case would be two deformed grids. *Typo in img: RayY*
Edited by joostjordens - Oct. 31, 2018 09:31:39
Houdini Indie and Apprentice » I want to get the P.x value of one specific point in VEX.
- joostjordens
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Houdini Indie and Apprentice » I want to get the P.x value of one specific point in VEX.
- joostjordens
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See image: I'm trying to get the P.x value of Point5 to add to the position of @P.x. But I only get value 0 in my vector. Input geo 0 is a line.
What I want to achieve is having the middle point of my line in the center of the scene after the chramp. As if I copy paste the P.x value of pt5 in a transform. Or is there another way?
Thanks!
What I want to achieve is having the middle point of my line in the center of the scene after the chramp. As if I copy paste the P.x value of pt5 in a transform. Or is there another way?
@numpt -= 1; float ramp = float(@ptnum)/float(@numpt); ramp = chramp('ramp',ramp); @P.x = ramp*ch('scale')*ch('rampscale'); v@middle = point(0,'P',5);
Thanks!
Edited by joostjordens - Oct. 18, 2018 19:28:46
Houdini Indie and Apprentice » Make wind deform (animate) a plant model.
- joostjordens
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ArjanM [houseofsecrets.nl] figured it out: Here is his example file. I don't understand the VEX code personally, but I will be grinding VEX tutorials untill I do.
Edited by joostjordens - Oct. 13, 2018 08:06:35
Houdini Indie and Apprentice » Make wind deform (animate) a plant model.
- joostjordens
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@BabaJ: Cool, did not know they already had a video on Vellum, will watch tommorow.
@goldfarb: I'm planning to create everything in Houdini. Will try the lattice effect tommorow (regarding text below).
Thank you all for your responses. Vellum indeed worked great for the lines. I was lucky and got help from ArjanM [vimeo.com] who also helped me with an initial setup for deforming geometry. Since I'm a novice at VEX and Math I still don't fully comprehend everything, but I'm happy with the pace I am learning. Tommorow I'm going to try using different deform methods as I've noticed a small issue regarding rotation of the deformation. Here's an image of the current effect using the PointDeform node. I want to have the effect of the Bend Deformer. According to Arjan it could be related to the normal.
@goldfarb: I'm planning to create everything in Houdini. Will try the lattice effect tommorow (regarding text below).
Thank you all for your responses. Vellum indeed worked great for the lines. I was lucky and got help from ArjanM [vimeo.com] who also helped me with an initial setup for deforming geometry. Since I'm a novice at VEX and Math I still don't fully comprehend everything, but I'm happy with the pace I am learning. Tommorow I'm going to try using different deform methods as I've noticed a small issue regarding rotation of the deformation. Here's an image of the current effect using the PointDeform node. I want to have the effect of the Bend Deformer. According to Arjan it could be related to the normal.
Edited by joostjordens - Oct. 12, 2018 16:43:45
Houdini Indie and Apprentice » Make wind deform (animate) a plant model.
- joostjordens
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Dear Houdini Community,
I've recently started to learn Houdini and have been grinding tutorials for the past weeks. However I don't know the proper search terms for my questions so I apologize if this is an obvious one.
So,
I have a scene with about 20 plants and I want to deform them using wind simulation. Here's a drawing on my though process so far:
The issue is really, I don't really know where to start of where to search for an effect like this. Any tips?
Many thanks in advance,
Joost
I've recently started to learn Houdini and have been grinding tutorials for the past weeks. However I don't know the proper search terms for my questions so I apologize if this is an obvious one.
So,
I have a scene with about 20 plants and I want to deform them using wind simulation. Here's a drawing on my though process so far:
The issue is really, I don't really know where to start of where to search for an effect like this. Any tips?
Many thanks in advance,
Joost
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