Yes, but only by building it yourself. This can either be done by using Object3D.addTriangle() or by merging multiple planes as returned by getPlane() into a rectangle. But that one may not have the texture properties you want. I may add a method to create a rectangle. I can give you the code of Primitves.getPlane(). It should be easy for you to change it in a way that it creates rectangles instead:
public static Object3D getPlane(int quads, float scale) {
float startx=-scale*(float) quads/2f;
float starty=startx;
float tx=0f;
float ty=0f;
float dtex=(1f/(float) quads);
Object3D obj=new Object3D(quads*quads*2+8);
for (int i=0; i<quads; i++) {
for (int p=0; p<quads; p++) {
float dtx=tx+dtex;
float dty=ty+dtex;
if (dtx>1f) {
dtx=1f;
}
if (dty>1f) {
dty=1f;
}
obj.addTriangle(startx, starty, 0, tx, ty, startx, starty+scale, 0, tx, dty, startx+scale, starty, 0,
dtx, ty);
obj.addTriangle(startx, starty+scale, 0, tx, dty, startx+scale, starty+scale, 0, dtx, dty, startx+scale,
starty, 0, dtx, ty);
startx+=scale;
tx+=dtex;
}
starty+=scale;
startx=-scale*quads/2;
tx=0;
ty+=dtex;
}
return obj;
}