getBezierCurve: Calculate x and y Coordinates for A Quadratic Bezier Curve

In caOmicsV: Visualization of multi-dimentional cancer genomics data

Description

Calculate x and y coordinates for a quadratic Bezier curve between two points with the equation: B(t) = (1-t) ((1-t)P0 + tP1) + t((1-t)P1 + tP2) where P0 is the start point, P2 is the end point, and P1 is the control point. P1 will be adjusted based on the distance of two points.

Usage

    getBezierCurve(lineStart, lineEnd, totalPoints)

Arguments

lineStart	numeric vector, the coordinate of a point where Bezier line starts
lineEnd	numeric vector, the coordinate of a point where Bezier line ends
totalPoints	non-negative numeric, total number of points that form a Bezier line

Value

posX	x coordinates of points that form Bezier line
posY	y coordinates of points that form Bezier line

Author(s)

Henry Zhang

Examples

    lineStart   <- c(0, 1)
    lineEnd     <- c(1, 0)
    totalPoints <- 2000
    the_line <- getBezierCurve(lineStart, lineEnd, totalPoints)

Example output

Loading required package: igraph

Attaching package: 'igraph'

The following objects are masked from 'package:stats':

    decompose, spectrum

The following object is masked from 'package:base':

    union

Loading required package: bc3net
Loading required package: c3net
Loading required package: infotheo
Loading required package: Matrix
Loading required package: lattice

caOmicsV documentation built on Nov. 8, 2020, 8:23 p.m.