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What is meant by "graphics primitive" in the sage documentation?

asked 2018-10-27 18:35:38 -0500

Fubwubs gravatar image

I'm currently learning sage, and I keep seeing the phrase, "graphics primitive" mentioned in the manual, but I'm not quite sure what is meant by that. The closest thing I've found to a definition of it is on the page "Plotting Primitives" where it is defined as "things that know how to draw themselves in 2D". Does this just mean that a primitive is anything predefined by sage, like circles and lines? Also, are there only "graphics primitives" and not any other kind?

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answered 2018-10-28 17:25:23 -0500

slelievre gravatar image

In a sense, a graphics primitive is a component of a graphics object.

One way of creating a graphics object is to add several pre-existing ones.

In that case, you get a graphics object consisting of several graphics primitive.

Here is an example.

sage: a = plot(lambda x: 1)
sage: b = plot(lambda x: x)
sage: c = plot(lambda x: x^2)
sage: for g in (a, b, c, a + b, a + b + c):
....:     print g
....:
Graphics object consisting of 1 graphics primitive
Graphics object consisting of 1 graphics primitive
Graphics object consisting of 1 graphics primitive
Graphics object consisting of 2 graphics primitives
Graphics object consisting of 3 graphics primitives
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Asked: 2018-10-27 18:35:38 -0500

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Last updated: Oct 28 '18