tree.gle
Subroutines for drawing trees
these constants are final (don't change these)
the defaults can be modified with the functions below
sub set_tree_node_dxdy dx dy
sub set_tree_node_fill dx dy
sub set_tree_node_min_size sx sy
sub set_tree_hei nodehei leafhei labelhei
sub set_tree_edge_label_add_dy add dy
sub set_tree_edge_arrow arr
sub set_tree_node_ellipse ell
sub set_leaf_ellipse_size_str str$
sub texortext str$ name$ delta hi
sub drawcliparc x0l x1l y0l x0b x1b label$
sub draw_edge_label x1 y1 x2 y2 label$
sub def_binary_node label$ llab$ rlab$ ltree$ rtree$ name$
sub def_tertiary_node label$ llab$ mlab$ rlab$ ltree$ mtree$ rtree$ name$
sub def_leaf_ellipse str$ name$