Questions tagged [geometry]

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Is there a C++ library that computes intersections between 3d spheres, cylinders and planes?

I was hoping that there might be a library out there that can analytically solve the surface intersection of cylinders, spheres, planes and lines. For example, if two cylinders intersect, what is the ...
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Application for playing with intersections of 1D, 2D and 3D solid objects

I need to do some "conceptual sketching", but in 3D. So, I am working with lines, squares, cubes, cylinders, prisms, spheres and balls. They may have grids (e.g. a segmentation on a line, intersection ...
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Looking for a documentation format/tool for geometric algorithms

I am looking for a way to easily document (rather simple) geometric (in three dimensions) programming tasks which are written in a general purpose (Pascal-type) language. For example, finding the ...
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4 views

Beizer surface cpp library

I need a cpp library (or github repo) for cubic bezier curves and surfaces (rectangular patches). I would like to have access to position and normal for a given parametrization point (u,v). No ...
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19 views

2D Geometry Library that helps keep track of Vertices and Edges

I am looking for a 2D geometry library that is natively written for .NET (i.e. not a wrapper around a platform-dependent library). The geometry features I am looking for are: Union, intersection, ...
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34 views

Annotation software for multi camera setup

Background I have multiple, synchronized cameras with partial overlapping views. I already have object tracking applied to the objects in the videos I get from these cameras. Now I want to have a ...
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1answer
41 views

A free geometry drawing program for commercial use

I'm working as a private teacher. Sometimes I need to draw some geometric figures. Is there any free program to do that? I found from the Internet that Geogebra looks good but unfortunately I'm not ...
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10 views

Java library to calculate distances and angles from latitudes/longitudes on a sphere

I am looking for a java library to calculate with and transform locations (lat, lon). Operations I want to perform on the sphere: given two locations x, y I want to know the distance from x to y ...
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1answer
19 views

Geometry software

I am looking for an appropriate open source software that would allow me to design/generate geometrical patterns (2d and 3d), tilings, fractals and similar. Any recommendation would be highly ...
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16 views

What game engine should I use for a game in non-euclidean space?

I am interested in making a game in elliptical space. Basically that means that when you're standing still in this game and look around, you will see a regular three dimensional space. Then when you ...
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10 views

Free program to create 3d transparent geometric figures inside another 3d transparent geometric figures and rotate it

I need to draw a 3d cylinder inside another 3d cylinder, and then rotate it to get different perspectives.
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28 views

Delaunay Triangulation or EMST function

I am looking for stand-alone code to build the Delaunay triangulation of a set of 2D points. (No constraint, Euclidean metric.) In fact I need it to build a Euclidean Minimum Spanning Tree, so that a ...
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340 views

Paving / Advancing Front Quad Mesh Algorithm Implementation in C# Code or Unity Importable Library

I'm developing a game in Unity, and have hit a snag with a step I wasn't expecting given the amount of research done on the topic. I'm in need of a block of code or a library that performs the ...
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3answers
48 views

Geometry and position layer over an image

Good day everybody. I have a scaled picture of my garden, I have some points in my garden measured by surveyors. I am looking for calibratable, geometry-measurement, click-position showing software ...
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842 views

Is there a Python package to do constrained Delaunay triangulation?

I have a function whose range is a non-convex, simply connected region in R3. When I sample the function I know if the resulting point is on the surface of the region or not. I'd like to triangulate ...
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3answers
87 views

Dimension-driven graphics software

I'm looking for something analogous to the sketch feature in SolidWorks, but for creation of graphics. For those who haven't used SolidWorks, here's a video of a sketch being made. Essentially, I ...
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0answers
72 views

Free program for geometric adjustment (trilateration, least square method)

I am looking for a free application in order to calculate optimal coordinates of points, given a fixed set of points and the mutual distance between them. The system is over-constrained hence spatial ...
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39 views

Software for importing lat,lon and displaying Mercator projection

Are there any software [Ideally free] out there which I can import latitudes and longitudes of areas and it displays the Mercator projection of those points? To make the task even easier I must say I ...
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45 views

Surface 3D modelling with meshing

I'm looking for a software (or lib with python bindings) to generate quality tet/quad mesh in an easy to use toolchain, for input in a FEM solver. The operating system is Windows. The capabilities ...
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1answer
289 views

Software for visualization of geometric problems

I'm looking for software which can help me to visualize 2d and 3d objects in space with additional elements like in examples below. Also I'd like to rotate 3d figures to be able to look from another ...
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2answers
2k views

Looking for a Geometry Manipulation library

We have a legacy program that does some polygon clipping - unions, difference, intersection, exclusive or of polygons and multipolygons. It uses the University of Manchester's GPC - General Polygon ...
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30 views

Solve mechanical drawing, defined by geometrical constrains in a symbolic way

I have a mechanical 2D drawing that is specified by certain geometrical constrains and would like to solve it for certain variables (like angles and distances). The end result would be a closed-form ...
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1answer
528 views

Polyhedron visualisation

Is there a software that can create a 3D visualization of a polyhedron, based on inequations that define its delimiting planes, of the form A_1 x < b_1 A_2 x < b_2 A_3 x < b_3 Here an ...
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56 views

3D geometry arithmetic helper

As a computer graphics programmer, I often have to deal with complex cases of solid geometry. To resolve these cases, I need to find the formula expressing the value that I need depending on my ...