distance-to-line-segment

distance-to-line-segment

Calculate closest distance between a point and a line segment

API

distance-to-line-segment

• distance-to-line-segment
  • distanceToLineSegment(lx1, ly1, lx2, ly2, px, py) ⏏
    • .squaredWithPrecalc(lx1, ly1, ldx, ldy, lineLengthSquared, px, py)
    • .squared(lx1, ly1, lx2, ly2, px, py)

distanceToLineSegment(lx1, ly1, lx2, ly2, px, py) ⏏

Calculate the distance between a finite line segment and a point. Using distanceToLineSegment.squared can often be more efficient.

Kind: Exported function

Param	Type	Description
lx1	number	x-coordinate of line segment's first point
ly1	number	y-coordinate of line segment's first point
lx2	number	x-coordinate of the line segment's second point
ly2	number	y-coordinate of the line segment's second point
px	number	x coordinate of point
py	number	y coordinate of point

distanceToLineSegment.squaredWithPrecalc(lx1, ly1, ldx, ldy, lineLengthSquared, px, py)

Calculate the square of the distance between a finite line segment and a point. This version takes somewhat less convenient parameters than distanceToLineSegment.squared, but is more efficient if you are calling it multiple times for the same line segment, since you pass in some easily pre-calculated values for the segment.

Kind: static method of distanceToLineSegment

Param	Type	Description
lx1	number	x-coordinate of line segment's first point
ly1	number	y-coordinate of line segment's first point
ldx	number	x-coordinate of the line segment's second point minus lx1
ldy	number	y-coordinate of the line segment's second point minus ly1
lineLengthSquared	number	must be ldx*ldx + ldy*ldy. Remember, this precalculation is for efficiency when calling this multiple times for the same line segment.
px	number	x coordinate of point
py	number	y coordinate of point

distanceToLineSegment.squared(lx1, ly1, lx2, ly2, px, py)

Calculate the square of the distance between a finite line segment and a point.

Kind: static method of distanceToLineSegment

Param	Type	Description
lx1	number	x-coordinate of line segment's first point
ly1	number	y-coordinate of line segment's first point
lx2	number	x-coordinate of the line segment's second point
ly2	number	y-coordinate of the line segment's second point
px	number	x coordinate of point
py	number	y coordinate of point

License

MIT