RFOC (version 3.4-10)

PROJ3D: Project 3D

Description

Project a 3D body after rotation and translation

Usage

PROJ3D(aglyph, M = diag(1, nrow = 4), M2 = diag(1, nrow = 4),
             anorms = list(), zee = c(0, 0, 1))

Value

Glyph structure

x,y,z

coordinates of rotated body faces

xp

rotated normal vectors

zd

depth mean value of each face

Arguments

aglyph

glyph structure

M

rotation matrix

M2

rotation matrix

anorms

normals to structure

zee

Up direction of body

Author

Jonathan M. Lees<[e-mail]>

Details

This function takes a 3D body, rotates it and projects it for plotting. An example glyph is found in Z3Darrow.

See Also

makeblock3D, ROTZ, ROTY, ROTX, BOXarrows3D, Z3Darrow, TRANmat

Examples

  block1 = matrix(c(0,0,0,
      1,0,0,
      1,0.5,0,
      0,0.5,0,
      0,0,-2,
      1,0,-2,
      1,0.5,-2,
      0,0.5,-2), byrow=TRUE, ncol=3)

    Bblock1 = makeblock3D(block1)

    R3 = ROTX(-40)
    R2 = ROTY(0)
    R1 = ROTZ(20)
    T =  TRANmat(.1, 0, 0 )
    M =     R1  %*% R2  %*%  R3  %*% T

    T2 =  TRANmat(1, 0.5, 0 )
    MT =       T2 %*%   R1  %*% R2  %*%   R3 %*% T

    Z1 =  PROJ3D(Bblock1$aglyph, M=MT,  anorms=Bblock1$anorm , zee=c(0,0,1))