For questions specific to the Graphics3D command and related 3D graphics functionality.

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13
votes
1answer
365 views

How do I stop my joystick from rotating a 3D graphic?

I am trying to use Mathematica to illustrate mixed strategies in Game Theory. I want my students to be able to use common joysticks as controllers. What I find, however, is that in addition to doing ...
13
votes
1answer
411 views

Easy way to export Graphics3D as triangles with VertexNormals?

I would like to export an arbitrary Graphics3D object as a text file containing: list of vertices vertex normals triangle faces ...
12
votes
2answers
1k views

Finding a Concave Hull

I have a 3d clustered data: Is there any other way to get concavehull of 3D data points?
12
votes
2answers
509 views

Calculating morphometric properties

Is it possible to calculate segment length, segment diameter and branch angles for three dimensional geometry. Geometry contains vertex points and polygon surfaces as ...
12
votes
2answers
323 views

Color Histogram3D by Bin Location

I am using a Histogram3D plot to view the correlation of the R & G of an RGB image. Naturally, I want the bins to have a color corresponding to their $x$, $y$ ...
12
votes
1answer
1k views

3D plots with parallel projection

It is easy to make 3D Plots with Mathematica, e.g. use: Plot3D[Sin[x+y^2],{x,-3,3},{y,-2,2}] But I want to have nice plots in my thesis, so I decided to use ...
12
votes
1answer
620 views

ListSurfacePlot3D generates ugly artifacts

I have a list of $\{x,y,z\}$ pairs representing points in $R^3$. For every unique value of $z$ there are many $\{x,y\}$ pairs defining a polygon/contour in that particular $z$-plane. My dataset looks ...
12
votes
2answers
851 views

Which ray-tracing software is compatible with Graphics3D?

I am interested in working alternative to Mathematica's FrontEnd for rendering Graphics3D produced by Mathematica. The requrements are: An ability to import ...
12
votes
2answers
207 views

Mathematica, animations, and external ray tracing programs

As much as I enjoy and admire Mathematica's animation capabilities, I would like to take my animations to the next level by exporting the geometry of every frame to an external ray tracing program ...
12
votes
0answers
111 views

Bug(?) in version 10: Tooltip and ListPointPlot3D

Bug introduced in 10.0.0 The coordinates of a point in a three dimensional graph can be shown in a tooltip: ...
11
votes
5answers
1k views

How to make a depth map from a 3D model?

Given a 3D .obj model, for example a rabbit. How can we make a depth map out of it? Any idea or help would be much appreciated.
11
votes
3answers
908 views

How can I visualize 6 square matrices as a cube?

I have six square matrices of the same dimensions in a list, for example: ...
11
votes
4answers
698 views

Is there a way to increase the smoothness of a cylinder?

I am using Cylinder to produce wide flat disks (in Mathematica 8). This works just fine except that the circular base of such a cylinder turns out to be really just ...
11
votes
2answers
326 views

Map of United States as a 3D histogram

By combining the state data from here and the extrusion code from here I have managed to make prisms of the various US states such as However, the extrusion method looses information about the ...
11
votes
2answers
207 views

Boundary effect of Graphics3D object Tube[]

I draw a Graphics3D object of two tubes: Graphics3D[{Tube[{{-0.2, -1, 0}, {-0.2, 1, 0}}, 0.05], Tube[{{0, 0, -1}, {0, 0, 1}}, 0.05]}, Boxed -> False] And ...
11
votes
1answer
355 views

Facegrids at ticks

I want to plot a 3D graphic and I want facegrids at the ticks that I specify. I've tried several solutions but I cannot get this working. The result with the code provided below is that it does its ...
11
votes
2answers
2k views

Graphics3D: Finding intersection of 3d objects and lines

I found these two nice links 1) intersecting graphics 2) Implementation of Balaban's Line intersection algorithm in Mathematica which works for 2d. However, I need to find whether a ray(line) ...
11
votes
2answers
739 views

Why is ListDensityPlot unable to plot datasets with extreme ranges

Consider the following dataset: data = Flatten[ Table[{x 10^-9, y 10^-9, x^2 + y^2},{x, -100, 100, 10}, {y, -100,100, 10}] , 1]; If I try to ...
10
votes
4answers
988 views

How to draw a higher-genus surface

NB: By higher-genus surface, I mean a closed orientable surface of genus at least 2. This question has come up before on math.SE, and even MathOverflow, but most posters suggested using either ...
10
votes
3answers
420 views

Showing the empty space in a Graphics3D plot

I would like to be able to visualize the empty space in a Graphics3D plot. For example, if I plot hexagonally close packed spheres using something like: ...
10
votes
2answers
394 views

Is there a way to interactively read a point from a Graphics3D?

Suppose I have a tesselation, e.g. the Stanford bunny: bunny = Import["http://graphics.stanford.edu/~mdfisher/Data/Meshes/bunny.obj", "OBJ"] I'd like to be ...
10
votes
4answers
406 views

How to create Line Chart with real third coordinates?

I would like to generate something like 3D Line Chart in Excel. Like the following figure but including third coordinates. Example I have a set of 2D data combied with 1D spatial data. ...
10
votes
1answer
333 views

Poor performance from Graphics3D

I wrote a game -- 2048,Some codes are from http://blog.wolfram.com/. My codes are in notebook downloads I added code so that the game can play in 3D form, but when I play it, I find that it is too ...
10
votes
1answer
203 views

Compose many Geometric Transformations for 3D Graphics

I'm struggling to understand what would be a good way to compose several geometrical transformations to create a single TransformationFunction to be applied to a ...
10
votes
3answers
790 views

Dashed mesh behind 3D object

I am trying to create a simple, almost transparent 3D sphere with a mesh that is made of solid lines if they are on the front surface (i.e. if they are directly visible) and of dashed lines if those ...
10
votes
1answer
668 views

How do I generate the Mathematica Version 2 Spikey in Mathematica?

As we all know, Mathematica changes its logo design with every new version, while still maintaining the dodecahedral/icosahedral motif. I have been able, through much digging around, to finally ...
10
votes
3answers
532 views

How to properly project a Graphics object consisting of line primitives

My problem starts from attempts at depicting overlapping lines of different thickness, i.e. ...
10
votes
2answers
228 views

How can I decide whether a closed surface is intersected by a triangle?

A closed surface consisted of Polygons or GraphicsComplex and a triangle made by 3 points are in a 3D space. How can I decide ...
10
votes
1answer
245 views

Forming Cone with Tube fails to work in version 9.0.1

I use two different radii in a Tube expression to draw a cone. I know for a fact that this worked in Mathematica 8, but when I reevaluated my code in versio 9.0.1 ...
10
votes
1answer
476 views

How do I place a texture on an irregular 3D model?

I'm trying to reproduce a textured head in Mathematica, and I'm using a kind of 'net' of a head which contains all the features on the face. The texture looks like this: which is supposed to look ...
10
votes
0answers
572 views

Using TetGen in Mathematica to get 3D Voronoi diagram

In this post, the use of TetGen for 3D Voronoi tesselation has been briefly discussed. However there is still no info about the use of TetGen to generate a 3D Voronoi diagram. The TetGen documentation ...
9
votes
3answers
251 views

Excluding a Region in ParametricPlot3D

Suppose I have a torus and a closed path on said torus: ...
9
votes
4answers
598 views

ParametricPlot3D output without the meshlines

Caveat: Mathematica version 3.0. if (or when) it matters. I define a 3D-object with ParametricPlot3D, say, the following: ...
9
votes
5answers
543 views

Randomly assigning color to Graphics3D objects?

I have a set of Graphics3D primitives (here, spheres) which I would like to assign either: (1) One of a subset of colors, e.g. {Green, Red} (2) A random color over some RGB interval Writing ...
9
votes
4answers
1k views

Filling between two 3D surfaces

I know it is possible to create a filling in between two curves on a 2D plot, but is it possible to do the same in 3D? My attempt like this: ...
9
votes
2answers
291 views

Is there a way to programmatically set global preferences?

Can I set global preferences that are accessible via "Edit"->"Preferences" programmatically from within a notebook? As learned from this question, turning off anti-aliasing can make a huge difference ...
9
votes
2answers
295 views

Drawing Cylindrical Segment with Graphics3D

For a visualization I need a combination of 3 Cylindrical segments to visualize the incident, reflected and refracted beam of light at a surface. I got as far as the following code. ...
9
votes
2answers
870 views

Coloring each face of a Cuboid with a different color

Is there a way to color each face of a Cuboid with a different color? I looked in the help but couldn't find anything. I found this Coloring the faces of a 3D ...
9
votes
1answer
385 views

Outline around sphere

Is there an easy way to draw an outline around a sphere? Is there something like EdgeForm[] that will work? I'm looking for perhaps a thick red line; I'm making a ...
9
votes
1answer
1k views

Construct 3D image from multiple 2D images

My goal: How to (1) construct 3D image for visualization. (2) how to write 3D array or image into binary raw file. Is there a way to accomplish this in Mathematica? Alternative_Answer for: ...
9
votes
1answer
1k views

How do I flatten transparency on a graphics, for conversion to eps or similar?

I've got a graphic that I'd like to save as an eps file. Trouble is, the graphic has some transparency to it. Since the eps format doesn't handle transparency, I want to flatten the transparency out, ...
9
votes
1answer
97 views

Mathematica's “POV” export format ignores ColorFunction

I was playing with xslittlegrass's Pov-Ray package and more generally with the POV-conversion function ExportString[#, "POV"] &, and noticed that ...
8
votes
2answers
219 views

Attaching a legend to BallAndStick picture

I am looking for a way to add a legend showing the identity of various atoms (with different colours) to this picture. Any Clues? ...
8
votes
3answers
355 views

Generating a “flare” effect in Graphics3D?

I'm attempting to indicate that there is a point-source of light at some position in a Graphics3D-generated image. Is there any built-in tool to do this? My patch-work solution thus far has been to ...
8
votes
3answers
1k views

Convex hull of a 3D object?

I am trying to find a convex hull command for a Graphics3D object. Does it exist in Mathematica? ...
8
votes
3answers
701 views

How do I remove a bounding box (i.e. set Boxed -> False) after rendering a 3D graphic?

I have an old notebook with an output from Graphics3D, however, I've lost the data behind the output and recomputing it would take days. I simply want to remove the bounding box Mathematica usually ...
8
votes
3answers
286 views

Multiple-colored regions on a Sphere in Mathematica

The problem: I would like to draw a sphere where the bottom half is one color, and the top half is split into 3 equal regions, each with its own color. I have come up with the following code, by ...
8
votes
1answer
265 views

Add lines to 3D Plot

How can I add lines that demarcate the different regions of the following 3D plot: Plot3D[1/(1 + E^(-a - c)), {a, -8, 8}, {c, -8, 8}] To give you an idea of what ...
8
votes
1answer
236 views

FindClusters for 3D Pancake/Platelet Shapes

I'm looking to properly cluster a dataset of roughly 3 million data points in 3-space. The shapes form closely spaced "clusters" that resemble pancakes. Here is a downsampled dataset: ...
8
votes
2answers
646 views

OpenSCAD like functionality with Mathematica?

I keep seeing reference to use of Mathematica as a CAD tool (for instance: http://www.makerbot.com/support/guides/design/). I'd like to use it as such if feasible, but I'm having trouble locating ...