March 2017
Intermediate to advanced
480 pages
11h 3m
English
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Point containment
So far in this chapter, we have implemented the basic primitives for 2D shapes. Now we are going to implement the most basic primitive test for 2D shapes; point containment. It's often useful to know if a point is inside a shape or not.
Getting ready
We are going to implement a method to check if a point is on a line, as well as methods to check if a point is within a circle, rectangle, and oriented rectangle. These are the most basic 2D intersection tests we can perform.
How to do it…
Follow these steps to test if a point is contained within any of the two-dimensional primitives we have created so far:
- Declare the containment functions in
Geometry2D.h:bool PointOnLine(const Point2D& point, const Line2D& line); bool PointInCircle(const ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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