RFOC (version 1.0-4)

BOXarrows3D: Create a 3D Arrow structure

Description

Create and project and plot 3D arrows with viewing Matrix.

Usage

BOXarrows3D(x1, y1, z1, x2, y2, z2, aglyph = NULL, Rview = ROTX(0),
col = grey(0.5), border = "black", len = 0.7, basethick = 0.05,
headlen = 0.3, headlip = 0.02)

Arguments

x1

x-coordinates of base of arrows

y1

y-coordinates of base of arrows

z1

z-coordinates of base of arrows

x2

x-coordinates of head of arrows

y2

y-coordinates of head of arrows

z2

z-coordinates of head of arrows

aglyph

glyph structure, default is Z3Darrow

Rview

Viewing matrix

col

fill color

border

Border color

len

Length

basethick

thickness of the base

headlen

thickness of the head

headlip

width of the overhanging lip

Value

• Used for graphical side effects.

Details

Arrows point from base to head.

See Also

Z3Darrow

Examples

#### animate 10 random arrow vectors


 L   = list(x1 = runif(10, min=-2, max=2),
    y1 = runif(10, min=-2, max=2),
    z1=runif(10, min=-4, max=4),
    x2 = runif(10, min=-2, max=2),
    y2 = runif(10, min=-2, max=2),
    z2=runif(10, min=-4, max=4)
    )
  headlen = .3
  len = .7
  basethick = 0.05
  headlip = .02
  aglyph = Z3Darrow(len = len , basethick =basethick , headlen =headlen , headlip=headlip )

  r1 = 8
  theta = seq(from=0, to=2*360, length=200)
  mex = r1*cos(theta*pi/180)
  mey = r1*sin(theta*pi/180)
  mez = seq(from=r1, to =0 , length=length(mex))
  ##  mez=rep(r1, length=length(mex))
  
  angz = atan2(mey, mex)*180/pi
  angx = atan2(sqrt(mex^2+mey^2), mez)*180/pi
  pal=c("red", "blue", "green")

##  aglyph = gblock

  
  for(j in 1:length(angz))
    {
      Rview  =    ROTZ(angz[j])      plot(c(-4,4), c(-4,4), type='n', asp=1); grid()
      
      BOXarrows3D(L$x1,L$y1,L$z1, L$x2,L$y2,L$z2,  aglyph=aglyph,  Rview=Rview, col=pal)
      
      Sys.sleep(.1)
    }