# Tagged Questions

Questions on the spline-related functions of Mathematica (BezierCurve[], BSplineCurve[], etc.), or related to the theory and use of splines in Mathematica.

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### How to define a custom 2/3D graphic primitive like built-in?

There are lots of basic graphic-pimitive in Mathematica, such as 2D- pimitive: Line[], Circle[], Disk[] and 3D-pimitive: ...
49 views

### BSplineFunction defies numerical solution

I am trying to find an intersection between a straight line and a BSpline. The lines: ...
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### Color Snapping When Using VertexColors with a Tube with BSplineCurve as an Argument

I think I've identified a bug in how VertexColors are treated when rendering a Tube object where the underlying data is a ...
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### Artefact at joints within BSplineCurve of low Opacity

I want to eliminate the dots of higher opacity that occur at the joints within a BSplineCurve of low opacity. Small rectangles of greater opacity, shown below, ...
471 views

### Cubic polynomial interpolation with velocities listed rather than some points

I am trying to use the function BSplineFunction[] to create a natural cubic spline. Normally what is done is that you specify "SplineDegree -> 3" and include a list of points and it will carry out ...
490 views

### How to make 3D object smooth?

This thread considers mathematical methods here to make the 3D object smooth but this question consider how to achieve the goal of smoothing a 3D object in Mathematica. I want to get smoother ...
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### Exporting BSplineSurface to STL

I have encountered some difficulties getting BSplineSurface to export to STL. The following code works and generates a triangulated polygon mesh from the NURBS ...
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### Extracting control points from BezierFunction

given a Bézier surface, is there a simple way to express $g_{12}$ (from the First fundamental form) again in Bézier form? More precisely, I have control points and a Bézier function $f$: ...
I'm trying to use the convolution definition of hexsplines, that is, a hexspline is the convolution of the indicator function of a hexagon (of sidelength 1 and centre $(0,0)$ ) with itself. I'm ...