4-triangular-bifrusta.pov

#include "colors.inc"
#include "PolyhedronKit.inc"
#declare light=<1, 0, 0> * 2;
#declare light=<1, 1, 1> * 1.3;

background {color White}
camera {location light look_at <0, 0, 0>}
//camera {location <-5, 0, 0> look_at <0, 0, 0>}

light_source {light color White}
light_source {<0, 0, 0> color White}

#macro triBifrusta(xrot, yrot, zrot, thick, ocolor)
  #declare height = .6;
  #declare bwidth = 1;
  #declare swidth = .75;

  // Main axis points
  #declare p1 = <0, 0, .577 * bwidth>;
  #declare p2 = <-.5 * bwidth, 0, -.289 * bwidth>;
  #declare p3 = <.5 * bwidth, 0, -.289 * bwidth>;

  // Positive axis points
  #declare p4 = <0, height, .577 * swidth>;
  #declare p5 = <-.5 * swidth, height, -.289 * swidth>;
  #declare p6 = <.5 * swidth, height, -.289 * swidth>;

  // Negative axis points
  #declare p7 = <0, -height, .577 * swidth>;
  #declare p8 = <-.5 * swidth, -height, -.289 * swidth>;
  #declare p9 = <.5 * swidth, -height, -.289 * swidth>;

  // Trying to keep a constant width for ease of folding
  #declare pwidth=.05;

  // Upper then lower triangular faces
  #declare triAngle=0;
  otriangle(p4, p5, p6, triAngle, pwidth, <xrot, yrot, zrot>, ocolor, true)
  otriangle(p7, p8, p9, triAngle, pwidth, <xrot, yrot, zrot>, ocolor, false)

  // Upper then lower trapezoidal faces
  #declare trapAngle=0;
  oquad(p1, p2, p5, p4, trapAngle, pwidth, <xrot, yrot, zrot>, ocolor, false)
  oquad(p2, p3, p6, p5, trapAngle, pwidth, <xrot, yrot, zrot>, ocolor, false)
  oquad(p3, p1, p4, p6, trapAngle, pwidth, <xrot, yrot, zrot>, ocolor, false)

  oquad(p1, p2, p8, p7, trapAngle, pwidth, <xrot, yrot, zrot>, ocolor, false)
  oquad(p2, p3, p9, p8, trapAngle, pwidth, <xrot, yrot, zrot>, ocolor, false)
  oquad(p3, p1, p7, p9, trapAngle, pwidth, <xrot, yrot, zrot>, ocolor, false)

#end

//triBifrusta(0, 0, 0, .1, Orange)

triBifrusta(30, 35.2644, 45, .1, Orange)
triBifrusta(-30, -35.2644, 45, .1, Magenta)
triBifrusta(30, 35.2644, -45, .1, Green)
triBifrusta(-30, -35.2644, -45, .1, Yellow)