Shortest distance between two line segments - Stack Overflow
2017年10月4日 · I need a function to find the shortest distance between two line segments. A line segment is defined by two endpoints. So for example one of my line segments (AB) would be defined by the two points A (x1,y1) and B (x2,y2) and the other (CD) would be defined by the two points C (x1,y1) and D (x2,y2).
How can I check if two segments intersect? - Stack Overflow
2010年10月1日 · Check if the two line segments are non zero length line and distinct segments. From hereon, I assume that the two segments are non-zero length and distinct. For each line segment, compute the slope of the line and then obtain the equation of …
math - Merge 2d line segments - Stack Overflow
2011年11月20日 · A line segment is made of up two vector points, the start of the line segment and the end point of the line segment. I want to join line segments that look like they should form the same straight line, I don't want to join the line segments if they are of completely different orientations but happen to have 2 points close to each other.
Line Segments in Matplotlib - Stack Overflow
Given coordinates of [1,5,7,3,5,10,3,6,8] for matplotlib.pyplot, how do I highlight or colour different segments of the line. For instance, the coordinates 1-3 ([1,5,7,3]) in the list represent attribute a. How do I colour this bit of the line and mark it in the legend? Edit: The list in question contains tens of thousands of elements.
Calculation of intersections between line segments
2013年5月1日 · c. If only one is vertical (say, first one), then build the equation of the second line (as outlined below), find the point where two lines intersect (by substituting x1 into the equation of the second line) and check if this point is within both …
How do you detect where two line segments intersect? [closed]
2009年2月19日 · Now move line segment b the same way and check if the new points of line segment b are on different sides of line a. If this is the case, check it the other way around. If this is also the case, the line segments intersect. If not, they don't intersect. Question A: Where do two line segments intersect? You know that two line segments a and b ...
calculating the point of intersection of two lines
2022年1月17日 · function checkLineIntersection(line1StartX, line1StartY, line1EndX, line1EndY, line2StartX, line2StartY, line2EndX, line2EndY) { // if the lines intersect, the result contains the x and y of the intersection (treating the lines as infinite) and booleans for whether line segment 1 or line segment 2 contain the point var denominator, a, b ...
Shortest distance between a point and a line segment
2009年5月12日 · It will return negative values if b is below the line after the rotation and if for example the line goes from 0,0 to 10,0 and the point b is at x,y,the distance will be y no matter what y or x are, which is the distance to a (infinitely long) line going through those two points, not the distance to a line segment.
Finding Overlapping Line segments in 2D - Stack Overflow
2018年1月6日 · Part 1 is simple. Represent the infinite line that each segment lies on in a canonical form. Then build a map from canonical forms to lists (in polyline order for later) of the line segments that lie on them. A useful canonical form of an arbitrary infinite line is a unit direction vector d and the unique point p that lies closest to the origin ...
algorithm - Find overlap between collinear lines - Stack Overflow
2013年3月31日 · Given two collinear line segments AB and CD, how do I find if they overlap? How do I locate the start and end points of the overlap? Below is the approach I am using. I am first ensuring that A < B and C < D.