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Booleans

Forge supports a small hard-CSG core plus named SDF boolean variants inspired by hg_sdf.

Experimental operators:

  • *_columns
  • pipe
  • engrave
  • groove
  • tongue

These are available in Forge, but they are still being tuned and are not shown with beauty renders yet.

Parameters​

  • r Profile radius or blend width for rounded, chamfered, soft, pipe, and engrave-style operators.

  • n Repetition count for the *_columns and *_stairs variants.

  • ra, rb Paired profile widths for groove and tongue.

Hard Booleans​

Use operators for the basic set:

  • a + b for union
  • a - b for subtraction
  • a & b for intersection
let shape = (body + cap) - cut;
let mask = body & window;

All examples below use the same reference setup:

  • left source shape: gold metallic sphere
  • right source shape: diffuse box
  • shared camera, lights, environment, and checker floor
  • per-operator scene source in the repo examples/ directory

Hard Union​

a + b

Hard Union

Scene file: examples/boolean_union.ft

Hard Difference​

a - b

Hard Difference

Scene file: examples/boolean_difference.ft

Hard Intersection​

a & b

Hard Intersection

Scene file: examples/boolean_intersection.ft

Union Round​

a.union_round(b, r)

Union Round

Scene file: examples/boolean_union_round.ft

Union Chamfer​

a.union_chamfer(b, r)

Union Chamfer

Scene file: examples/boolean_union_chamfer.ft

Union Columns​

a.union_columns(b, r, n)

Scene file: examples/boolean_union_columns.ft

Image omitted for now while the operator is being tuned.

Union Stairs​

a.union_stairs(b, r, n)

Union Stairs

Scene file: examples/boolean_union_stairs.ft

Union Soft​

a.union_soft(b, r)

Union Soft

Scene file: examples/boolean_union_soft.ft

Intersect Round​

a.intersect_round(b, r)

Intersect Round

Scene file: examples/boolean_intersect_round.ft

Intersect Chamfer​

a.intersect_chamfer(b, r)

Intersect Chamfer

Scene file: examples/boolean_intersect_chamfer.ft

Intersect Columns​

a.intersect_columns(b, r, n)

Scene file: examples/boolean_intersect_columns.ft

Image omitted for now while the operator is being tuned.

Intersect Stairs​

a.intersect_stairs(b, r, n)

Intersect Stairs

Scene file: examples/boolean_intersect_stairs.ft

Difference Round​

a.diff_round(b, r)

Difference Round

Scene file: examples/boolean_diff_round.ft

Difference Chamfer​

a.diff_chamfer(b, r)

Difference Chamfer

Scene file: examples/boolean_diff_chamfer.ft

Difference Columns​

a.diff_columns(b, r, n)

Scene file: examples/boolean_diff_columns.ft

Image omitted for now while the operator is being tuned.

Difference Stairs​

a.diff_stairs(b, r, n)

Difference Stairs

Scene file: examples/boolean_diff_stairs.ft

Pipe​

a.pipe(b, r)

Scene file: examples/boolean_pipe.ft

Image omitted for now while the operator is being tuned.

Engrave​

a.engrave(b, r)

Scene file: examples/boolean_engrave.ft

Image omitted for now while the operator is being tuned.

Groove​

a.groove(b, ra, rb)

Scene file: examples/boolean_groove.ft

Image omitted for now while the operator is being tuned.

Tongue​

a.tongue(b, ra, rb)

Scene file: examples/boolean_tongue.ft

Image omitted for now while the operator is being tuned.