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.
98
questions
15
votes
1
answer
1k
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 ...
13
votes
3
answers
18k
views
Lofting between Splines
I’ve seen some C4D users use a tool called Loft-NURBS it seemed like a good way to speed up my workflow.
Is there a tool in Blender to create a surface from ...
10
votes
2
answers
3k
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 ...
9
votes
1
answer
6k
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:
...
8
votes
2
answers
6k
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 ...
6
votes
2
answers
2k
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 ...
6
votes
1
answer
2k
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 ...
5
votes
1
answer
5k
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, ...
5
votes
1
answer
5k
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?
4
votes
2
answers
602
views
Why does cloth simulation not work on a NURBS sphere which has been converted to a mesh?
I have created two spheres:
A UV sphere with 48 segments and 24 rings
A NURBS sphere, which I converted to a mesh using Object -> ...
4
votes
1
answer
1k
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 ...
4
votes
1
answer
1k
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 ...
4
votes
3
answers
1k
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 ...
4
votes
1
answer
2k
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 ...
3
votes
3
answers
668
views
Maintaining NURBS quality importing and exporting in and out of Blender
My planned workflow: SolidWorks -> Blender -> Keyshot
I export a SolidWorks file as .wrl format.
Import the .wrl file into Blender, create an animation, and export it as .abc format into KeyShot....
3
votes
3
answers
939
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 ...
3
votes
3
answers
15k
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 ...
3
votes
1
answer
98
views
Surface material properties on geometry level
I am very new to 3D surface/object design and rendering. My goal is to generate image data for testing computer vision algorithms.
I want to simulate/render a painted surface which is not completely ...
3
votes
1
answer
464
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 ...
3
votes
1
answer
2k
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 ...
3
votes
1
answer
1k
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.
2
votes
1
answer
464
views
Make every extrusion faces camera
I have a Curve. It contains lots of splines.
(Here I simply take two splines as an example)
Now i extrude it.
Now i want make all the extrusion face the camera.
That is,I want all spline extrusions ...
2
votes
3
answers
5k
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 ...
2
votes
1
answer
282
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 ...
2
votes
1
answer
170
views
Select Nurbs Surface CP's with Python
Is there a way to select specific vertices (control points) on a nurbs surface?
I'm working with a Nurbs Surface Circle, and want to select the highlighted vertices with Python.
I see this answer for ...
2
votes
2
answers
1k
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?
2
votes
1
answer
57
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?
2
votes
2
answers
1k
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 ...
2
votes
1
answer
72
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/
2
votes
0
answers
181
views
Parametizing parabolic nurbs surface
Wireframe of nurbs selected, default z-surface parabola underneath
How to model an accurate parabolic mirror with a known focal point?
Animating z surface math functions
Reminded me of an afterthought ...
2
votes
0
answers
1k
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
votes
0
answers
606
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 ...
1
vote
1
answer
676
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 :)
1
vote
2
answers
2k
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 (...
1
vote
1
answer
854
views
Curves: how to make circular shapes within curves
Is there a way to make a "perfect" circle with the points of my nurbs circle (the ones around the cursor)?. I tried "as sphere" and "bend angle", but the results are not very satisfactory.
Ideally I'...
1
vote
2
answers
311
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 ...
1
vote
2
answers
1k
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, ...
1
vote
1
answer
59
views
Curvy hard surface
I am running into a bit of a struggle here with a curved surface and was wondering if anyone could provide a tip to mode this. I highlighted the panel in green and the curved '' flow'' in orange.
...
1
vote
1
answer
283
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 ...
1
vote
1
answer
625
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 ...
1
vote
1
answer
46
views
Object bevel is "frozen" for part of curve and doesn't adjust with z-axis changes?
I added a path and gave it an object bevel, everything seemed to be going well until I tried making a z-axis change to part of my path. The bevel tilted around the curve to accommodate this change but ...
1
vote
2
answers
964
views
Converting Bezier to NURBS Curve
I was trying to convert a Bezier curve to a NURBS curve by clicking Curve->Set Spline Type->NURBS. But after the conversion to NURBS, the curve disappears. Is there any way to preserve the ...
1
vote
1
answer
565
views
Creating a smooth spherical surface
I am designing some parts for 3D printing and I have been banging my head for several days already trying to accomplish the following:
I have a "frame" that looks like this:
I am trying to create a ...
1
vote
1
answer
2k
views
Can we extract just the outside surface of a 3D model?
I am new to using Blender and wanted to know if this software can serve my purpose before jumping into using it.
I have CT(Computed Tomography)-scanned an object and exported the mesh into a PLY file....
1
vote
1
answer
369
views
How to make a Morph Object follow the surface of a model
I'm trying to create a character with admittedly unorthodox eyes and pupils.
What I'm attempting to do is make the pupils in 3D and them change their shape using morph targets, a little like the 3D ...
1
vote
2
answers
956
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 ...
1
vote
1
answer
935
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 ...
1
vote
1
answer
781
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.
1
vote
1
answer
262
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 ...
1
vote
0
answers
29
views
Is it possible to use blender to create a curved surface based on an original formula instead of the one used to create NURBS?
The way curved surfaces are created by computers is, for each conceivable point on a rectilinear surface, a formula is applied which evaluates the position of control vertices to determine where in ...