christmas-tree-diy.scad

// Params
plank_width = 48;
plank_height = 30;
plank_length_start = 1300;
plank_length_end = 30;
total_height = 1900;
base_height = 250;
base_length = 70;
rotation_angle = 60;

// Variables
base_iterations = floor(base_height / plank_height);
recalculated_base_height = base_iterations * plank_height;
tree_height = total_height - recalculated_base_height;
iterations = floor(tree_height / plank_height);
sub = floor((plank_length_start - plank_length_end) / iterations);

echo("number of layers", iterations + base_iterations)

// base
for (i = [0: floor(recalculated_base_height / plank_height) - 1]) {
    rotate([0, 0, i * rotation_angle]) 
    translate([0, 0, i * plank_height]) 
      cube([plank_width, base_length, plank_height], center = true);
    echo(plank_width, base_length, plank_height);
}

// tree
for (i = [0: iterations]) {
    rotate([0, 0, i * rotation_angle]) 
    translate([0, 0, recalculated_base_height + i * plank_height]) 
      cube([plank_width, plank_length_start - i * sub, plank_height], center = true);
     echo(plank_width, plank_length_start - i * sub, plank_height);
}