Rotate {LearnGeom}

Rotates a geometric object

Description

Rotate rotates a geometric object of any of the following types: line, polygon or segment

Usage

Rotate(object, fixed, angle)

Arguments

object

geometric object of type line, polygon or segment, previously created with any of the functions in the package

fixed

Vector containing the xy-coordinates of the only point of the plane which remains fixed during rotation

angle

Angle of rotation in degrees (0-360), considering the clockwise direction

Value

Returns a geometric object which is the rotation of the original one, following the clockwise direction

Examples

x_min <- -5
x_max <- 5
y_min <- -5
y_max <- 5
CoordinatePlane(x_min, x_max, y_min, y_max)
P1 <- c(0,0)
P2 <- c(1,1)
P3 <- c(2,0) 
Poly <- CreatePolygon(P1, P2, P3)
Draw(Poly, "blue")
fixed <- c(-1,-1)
angle <- 30
Poly_rotated <- Rotate(Poly, fixed, angle)
Draw(Poly_rotated, "orange")
fixed <- c(2,0)
Poly_rotated <- Rotate(Poly, fixed, angle)
Draw(Poly_rotated, "transparent")