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use <wheel.scad>;
module frame() {
l=3000;
w=1000;
h=160;
translate([-l/2, -w/2, 0])
cube([l, w, h]);
}
// specify (f)ront/(c)enter/(b)ack as -1/0/1 and (l)eft/(r)ight as -1/1
module wheel_position(fcb, lr) {
translate([1300 * fcb, 450 * lr, -250])
children();
}
// specify (f)ront/(b)ack and (l)eft/(r)ight as -1/1
module steered_wheel(fb=-1, lr=-1, rot=0) {
rotate([90, 0, fb*rot])
wheel();
}
// specify (l)eft/(r)ight as -1/1
module powered_wheel(lr=-1) {
rotate([90])
wheel();
}
module lasttretrad() {
frame();
for (lr = [-1,1])
for (fb = [-1,1])
wheel_position(fb, lr)
steered_wheel(fb, lr, rot=30);
for (lr = [-1,1])
wheel_position(0, lr)
powered_wheel(lr);
}
lasttretrad();
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