point inside rect
I have a rectangle of size l*b where one edge is present at p0 and opposite at p1. How do i check if a point/pixel pi is inside this rectangle or not?
I have a rectangle of size l*b where one edge is present at p0 and opposite at p1. How do i check if a point/pixel pi is inside this rectangle or not?
you can use contains method too
you should compare your point x and y coordinates with rectangle points, so if the p0 is the top-left vertex of the rectangle and p1 bottom-right then
1. p0 x coordinate < point x < p1 x coordinate
2. p0 y coordinate < point y < p1 y coordinate
if those conditions are satisfied then the point is inside the rectangle
the rectangle is present at some angle with x axis i.e it is not parrallel to any axix.
in this case, I suggest creating a contour
from that rectangle points which seems possible (see here ) and then use pointPolygonTest
. pointPolygonTest function determines whether the point is inside a contour, outside, or lies on an edge (or coincides with a vertex). It returns positive (inside), negative (outside), or zero (on an edge) value, correspondingly. (see here)
Asked: 2020-01-22 14:21:21 -0600
Seen: 7,119 times
Last updated: Jan 23 '20
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