LearnGeom (version 1.5)

IntersectLineCircle: Finds the intersection between a line and a circumference

Description

IntersectLineCircle finds the intesection between a line and a circumference

Usage

IntersectLineCircle(Line, C, r)

Arguments

Line

Line object previously created with CreateLinePoints or CreateLineAngle

C

Vector containing the xy-coordinates of the center of the circumference

r

Radius for the circumference

Value

Returns a vector containing the xy-coordinates of the intersection points. In case of no intersection, the function tells the user

Examples

# NOT RUN {
P1 <- c(0,0)
P2 <- c(1,1)
Line <- CreateLinePoints(P1, P2)
C <- c(0,0)
r <- 2
intersection <- IntersectLineCircle(Line, C, r)
x_min <- -5
x_max <- 5
y_min <- -5
y_max <- 5
CoordinatePlane(x_min, x_max, y_min, y_max)
Draw(Line, "black")
Draw(CreateArcAngles(C, r, 0, 360), "black")
Draw(intersection[1,], "red")
Draw(intersection[2,], "red")
# }