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Questions tagged [nurbs-surface]

A NURBS Surface is a mathematical model representing a surface. Use this tag for any questions pertaining to the "Surface" Object type in blender.

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Particles don't follow curve

I'm trying to create a traffic simulation with the particle system. I want to create a lot of cars that walk along a path...I'm just following this tutorial : The problem is that when I setup the ...
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2answers
164 views

How to extract side-view outline (e.g. top view) of a 3D object to 2D surface?

I want to make some 2D version of 3D particles. I used to shrinkWrap the 3D mesh to a plan, and draw NURBS curve manually along the boundary. However it is too time-consuming! Is there any easy way ...
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1answer
34 views

Sampling points of a nurbs surface using projections

I'm trying to sample a nurbs surface given certain constraints. Basically I'm trying to reproduce in 3D the following 2D situation. I don't know how to do this in 2D either so I need suggestions ...
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3answers
322 views

Can we smooth selected faces to make curved surface more precise?

Is there a way to smooth selected faces to make curved surface more precise? This kind of mathematical accuracy is of course easier achieved by using nurbs oriented workflow, but it could be handy to ...
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NURBs surface loop cut and slide

Loop cut and slide works well for mesh in Blender. Is there a way to loop cut and slide for NURBs surfaces in Blender 2.79b or 2.8 ? Subdivide for NURBS surface applies to the whole surface. Is ...
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2answers
130 views

How to make evenly spaced pillars for a roller coaster track?

I am a beginner in Blender. I am making a roller coaster and I want to put an array of stands under my roller coaster tracks. To do that, I used DupliFrame on my pillars, parented them to my NURBs ...
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48 views

Convert a Normal Curve to NURB with less control points/Curve points

I have a Human spine cross section image and I am trying to develop it's 2D surface model in blender as I feel its more flexible than CAD design software( Solid Works, Solid Edge etc). I have data ...
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0answers
70 views

Join multiple NURBS circles without collapsing circles/losing positions?

I'm trying to join and fill multiple NURBS circle surfaces (similar to the YouTube video here https://www.youtube.com/watch?v=_kGmh9r6pkE) but when I join my circles, they collapse into one circle, as ...
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1answer
284 views

How to remove lines from wireframe…?

I made a surface and added a wireframe modifier on top of that. I want to remove just horizontal lines from the mesh. How can I do that..? Please help. I have highlighted it in the picture below.
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1answer
108 views

How can I make this surface in blender…?

How can I make a surface like this....? I made this using nurbs in maya. Please Help. Thank You :)
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0answers
227 views

Joining Nurbs Circles?

I was trying to do this simple tutorial but when I tried to join the circles these just smashed into one and I can't even move them along the z axys. Thanks in advance!. EDIT: Adding de blend file, ...
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1answer
137 views

Distorted mesh when I use a bevel object on Nurbs curve vs. Bezier curve

I have a series of objects that I have procedurally generated use Bezier or Nurbs curves for which I then attached a Bevel and Taper object. When I use a Bezier curve the objects come out correctly. ...
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135 views

Is it possible to have mesh with NURBS editable surface

I have a mesh that has flat top and bottom and I want to know if it's possible to edit the top and bottom just as if they were NURBS surfaces. I have an example cube and two NURBS surfaces: And I ...
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1answer
219 views

How do I select Edges?

I apologize in advance for asking such a beginners question, and I assume this will come down to my view/window being wrong. I used Blender a few years back, and I am familiar with how shapes work ...
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1answer
62 views

How to bring 3d effect in surface?

Can anyone tell me how this surface looks like 3d which covers red sphere and blue cylinders. see the blend file here https://blend-exchange.giantcowfilms.com/b/3570/
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1answer
156 views

Conversion of fine organic surface mesh to a few patches of NURBS

Note: cross-posted in stackoverflow as well. Would this be OK? I have a very fine mesh (STL) of some organic shapes (e.g., a bone) and would like to convert it to a few patches of NURBS, which will ...
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1answer
750 views

Automatically draw hidden portions of paths with dashed lines

This is a follow up to a question of mine on TeX stackexchange site. Is it possible in blender to have an open surface that would render as opaque but the render would show automatically, depending ...
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0answers
44 views

Q Automated surface generation?

I have a NURBS surface definitions (i.e. the control node positions) but want to automate the generation of the surface in Blender. Currently I generate a flat regular grid of control nodes by ...
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0answers
26 views

Bend object with curves modifier [duplicate]

I'm trying to make Wheat How to bend this object without affecting target size? When I add this Object in Curve modifier with NurbsPath in object section my object changes sizes and moves, looking ...
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3answers
3k views

how can I make a mesh from curves?

I'm trying to mesh a rear wing of a vintage car. I've done some Bezier curves and converted them into mesh. I have the same amount of vertices, so I should be able to connect everything together but I ...
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2answers
644 views

How to bend nurbs surfaces

I modeled a simple flat square, adding thickness by extruding. Now I want the Surface to not be flat but a Kind of buldged. How do I accomplish that?
3
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1answer
552 views

How to get a straight Nurbs

I have added a nurbs curve. Im extruding it in the L direction and i do not need that curve shape. On the red axis its going straight but when i turn to green axis it makes a curve. With the orange ...
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2answers
756 views

how would you texture map a rope?

I would like to make a rope for a game object (so it should be fairly low poly). I know how to divide a cylinder into segments (K key with Z key) and form it around a nurbs path. for my game engine (...
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2answers
261 views

Can't fit plane to nurbs path to create a race track

I'm new here and I'm making a racing track for Assetto Corsa. I don't know what's exactly happening, but something doesn't let me to apply a Curve modifier to a plane. I'll explain myself: to make the ...
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1answer
374 views

Mesh curve to Nurbs

I'm new here. I'm want ask you if there is the possibility to transform the curve that comes from subdivision surface (shown in the photo) in NURBS curve.
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0answers
295 views

why is my displacement map not sharp?

The displacement map is an animation of the letters being engraved in the metal. The animation itself works just fine. The only problem is the edges of the letters. How can i get them straight instead ...
2
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1answer
47 views

Nurb Interface Tool question - lost my way

When I add a Nurbs curve now I get the wrong icon and no hairy catapillar. Whaa, What did I do?
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1answer
272 views

How can I subdivide a Surface NURB without affecting the shape?

Say, I lay down a Surface NURB Circle in Blender. It has 4 control points, and it is circular. Now, if I Subdivide it to add more control points, it starts to become a square. The more I subdivide ...
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1answer
2k views

How can I add control points to a NURBS surface

How can I add control points to the default 16 control points of a NURBS surface?
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3answers
477 views

Aligning tangents in connecting NURBS-curves

I want to smoothly connect two NURBS-curves. To that purpose, how can I align their common vertex tangents? Right now, they're at an angle (see picture). I could do it manually (on sight), put that ...
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1answer
216 views

Getting exactly circular/rounded NURBS corners

How can the weight of a NURBS curve/surface be calculated such that corners are exactly circular? It has something to do with the angle of the corner, but that doesn't seem to be displayed anywhere.
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1answer
185 views

Surface cannot be created with nurbs curves by pressing F key [duplicate]

I followed several tutorial to create a nurbs curve, and duplicate it in edit mode. Of course I pressed A key to select all points and F key to create surface. But there was no surface be created, a ...
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2answers
2k views

What are surfaces and metaballs used for?

I use very often meshes and curves, because I know what they are used for (meshes for renders and curves for follow curves). But I actually don't use surfaces and metaballs. What are surfaces and ...
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3answers
751 views

NURBS surface from branching curves?

I'm looking for a way to do something very similar to the technique using the skin modifier, but with NURBS. In other words, I'm looking for a way to do something similar to a convex hull, but not ...
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2answers
712 views

Why do I get large bevels on a curve with such a small bevel object?

I am bevelling a simple circle with another simple circle and as you can see from the screen shot below I have to make the bevel circle incredibly small and I still end up with a very large cross ...
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0answers
56 views

what does manifold mean in context of surface building [duplicate]

This question is different as I seek to know a particular context of this subject i.e. wrt 3d printing. It is important for me to know what this means. " So, projection onto the first coordinate ...
4
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1answer
420 views

Rounded wireframe with big cells

I'm pretty new to Blender and I'm trying to create a perfectly round NURBS sphere. I need a wireframe of this sphere with big cells (like on the image below) but I also need curved (sic!) not straight ...
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0answers
419 views

Create a Nurbs Circle Surface using python

I am trying to achieve the following post I see doing this two ways. Create a large circle and small circle and fill the inbetween. Perform the same steps as the GUI programmatically, create NURBS ...
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0answers
425 views

a single face in an object is shiny in solid mode and showing a strange gradient color in render

This is a door that I'm making. There is nothing special about it. It somehow has one face (A) that is different than others. I've tried flipping the normal, deleting the face and remaking the face. I ...
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0answers
63 views

Apply modifier to multiple objects? [duplicate]

I'm using Blender 2.70. How do I apply the same modifier to multiple objects? None of the answers I searched for work, listed below: Apply modifier to one object, then select all, make applied object ...
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2answers
505 views

Hard edges and curved surfaces

I'm quite new to Blender(and 3D graphics in general) and I can see that there is only 2 kinds of 3d surfaces, meshes and NURBS, meshes only have hard edges, while NURBS have only got curved surfaces, ...
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1answer
224 views

Blender 3d NURBS Path objects move

I was trying to create train tracks using NURBS path and everything looks to be great till I press play. As soon as I play it in Blender Game Engine, the objects are no longer merged and have a clear ...
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1answer
1k views

Export/list the control points of a NURBS

30 minutes ago, I launched blender for the first time. I'm rather overwhelmed by the options, so I dare to ask this novice question. I'd like to export the control ...
4
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1answer
745 views

NURBS trimming, blend surfaces

I'm exploring Blender's NURBS functionality. So far, I've been able to define two curves and create a NURBS surface between them. Does Blender support more advanced NURBS features like trimming and ...
2
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1answer
236 views

How to get rid of imperfections after applying subsurf?

I'm trying to model a simple sofa in blender but after I applied subdivision surface modifier i got that nasty gap. On the other side it looks good. here ^ is how it looks in edit mode, there are not ...
5
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1answer
3k views

Why can I not use the Make Segments command on my Surface NURBS Curves?

I followed the tutorial on the Modeling/Surfaces/Skinning wiki page, and then I created a simple test. I created a Surface NURBS curve, made 3 copies with space between them, selected all, and hit F, ...
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1answer
1k views

Convert imported SVG shape to Bézier/NURBS surface

I have a closed Bézier curve created in Illustrator which I've imported into Blender via SVG. I don't want to extrude it, but rather make it a filled surface (at the moment it's just a path) which I ...
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2answers
913 views

Modeling a fish with curves - complication at tail

I'm modeling a fish with Bézier curves, but now I have a body of rotation and don't know how to carve out the tail. I have searched Google and YouTube for the problem, but the nearest thing I have ...
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1answer
3k views

Create NURBS surface with Python

How can I write a script to create a NURBS surface with given control points? I did find a helpful piece of source code that got me here: ...
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2answers
583 views

How to get world coordinates of a UV parameter on a NURBS Curve Surface?

I am looking for a solution to get the world x, y, z coordinates of a given UV parameter on a NURBS Curve Surface. The output should be a mathutils.Vector, or at ...