Question 1

How to calculate the distance between a point and a plane in GeometRi?

Accepted Answer

Use the DistanceTo method on a Point3d object, passing the Plane3d as a parameter. The library handles coordinate system conversions automatically, so you don't need to manage transformations manually, as shown in the Point3d methods section.

Question 2

Is GeometRi good for collision detection in games?

Accepted Answer

GeometRi supports basic collision detection through methods like Intersects and IntersectionWith, but its focus on simplicity over speed makes it better for prototyping or educational purposes rather than real-time game engines where performance is key.

Question 3

GeometRi vs MathNet.Numerics for 3D geometry?

Accepted Answer

GeometRi specializes in 3D geometric primitives with automatic coordinate management, while MathNet.Numerics is more general-purpose for numerical computations. Choose GeometRi for intuitive 3D geometry; opt for MathNet if you need broader mathematical tools like linear algebra or statistics.

Question 4

How to set up coordinate systems in GeometRi?

Accepted Answer

Define local coordinate systems using the Coord3d class, and objects like Point3d can be constructed with an optional 'coord' parameter. Transformations between systems are handled implicitly when performing operations, as described in the Coord3d section.

Question 5

What is the tolerance property in GeometRi and how to adjust it?

Accepted Answer

GeometRi3D.Tolerance is a global double value used for proximity checks in methods like AlmostEqual. Adjust it by setting GeometRi3D.Tolerance to a new value, but be cautious as it affects all comparison operations, as noted in the GeometRi3D class documentation.

Question 6

Can GeometRi handle ellipsoid intersections?

Accepted Answer

Yes, the Ellipsoid class has methods like IntersectionWith for lines, planes, and segments, based on algorithms adapted from sources like Johannes Buchner's work, as credited in the README. This allows for complex geometric queries.

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