Maths - Points

We have already discussed how to specify a point in the coordinate pages.

Here the aim is to work with points in the same terms that we will do with the other geometric elements to be discussed here: lines, planes and volumes. With these other elements we will start with a simple version that goes through the origin and the later add the ability to displace it.

A point which goes through the origin is just the origin, it does not require any information to define its direction, if its associated with a value then its a scalar quantity.

To define a point other than the origin, we can displace it with a vector which is a quantity with magnetude and direction.

It may seem over pedantic to make a distinction between a point and a vector in this way, but the distinction is real and it will be useful later as we will want points and displacements to behave slightly differently.













metadata block
see also:


Correspondence about this page

Book Shop - Further reading.

Where I can, I have put links to Amazon for books that are relevant to the subject, click on the appropriate country flag to get more details of the book or to buy it from them.


cover Applied Geometry for Computer Graphics...

This site may have errors. Don't use for critical systems.

Copyright (c) 1998-2023 Martin John Baker - All rights reserved - privacy policy.