Mged User's Manual

## Editing Solids

So far we've focused on creating primitive solids and combinations. Now let's look at ways of altering and deleting things that already exist. We'll continue with our example mug geometry. There are a number of changes that need to be made to make it more realistic.

- The handle for the mug is a little awkward. It sticks out too far from the side of the mug, and it is too wide.
- The bottom is perfectly flat. Any imperfection in the table top would cause it to wobble.
- The inside bottom corner is too sharp. We need to create a "fillet" at the seam between side and bottom.

### Fixing the Handle

    kill handle.c
    kill ring.s
    in handle_01.s eto 0 2.25 1.25 1 0 0 .75 0.3 0 0 .15
    in handle_02.s rpp -.5 .5 1 3.5 1.25 2.5
    in handle_03.s rec 0 3 1.25 0 0 1.25 0.3 0 0 0 .15 0
    in handle_04.s eto 0 2.25 2.5 1 0 0 .75 0.3 0 0 .15

    comb handle.c u handle_01.s - handle_02.s - outside.s u handle_04.s - handle_02.s - outside.s u handle_03.s

### Adding a Base

    mvall outside.s outside_01.s
    in outside_02.s tor 0 0 0 0 0 1 1.6875 .0625
    comb cup.c u outside_02.s
    in outside_03.s rcc 0 0 0 0 0 -.2 1.6875
    comb cup.c u outside_03.s
    in outside_04.s tor 0 0 -.2 0 0 1 1.6875 .1375
    comb cup.c - outside_04.s
    in outside_05.s ellg 0 0 -.2 1.5 0 0 0 1.5 0 0 0 .15
    comb cup.c - outside_05.s
    center 0 0 0
    size 4
    ae 170 -52 120
    rt -s 512 -F :1

### Adding a fillet

    mvall inside.s inside.c
    mv inside.c inside_01.s
    solid edit bottom of inside_01.s up to 0 0 0.3125
    in inside_02.s tor 0 0 .3125 0 0 1 1.4375 0.0625
    in inside_03.s rcc 0 0 0.25 0 0 0.125 1.4375
    comb inside.c u inside_01.s u inside_02.s u inside_03.s
    B mug.r
    ae 35 85
    size 5
    rt -s 512 -F :1