topic Re: How to bevel around the edges of tiles in GDL

How to bevel around the edges of tiles

Daniella1985 — Sat, 13 Jun 2026 20:35:35 GMT

I can only do the top side, I can't handle the other three sides. Can I just input the cutting angle? The black one is a cube. I also want to cut it, how do I use it? I don't know how to use those commands

! 磁磚群組 IF chamfer_t > 0 THEN ADDZ B + 0.001 CUTPLANE{2} -45 DEL 1 ENDIF IF chamfer_b > 0 THEN ADDZ 0 - 0.001 CUTPLANE{2} 45 DEL 1 ENDIF IF chamfer_r > 0 THEN ADD taw_end - chamfer_r, 0, 0 CUTPLANE{2} 45 DEL 1 ENDIF IF chamfer_l > 0 THEN ADD tax + chamfer_l, 0, 0 CUTPLANE{2} -45 DEL 1 ENDIF group "w_tiles" MATERIAL sur_mat x_phase = tile_offset_x - INT(tile_offset_x / (tw + gv)) * (tw + gv) y_phase = tile_offset_y - INT(tile_offset_y / (th + gh)) * (th + gh) x_start = x_phase - INT((x_phase - tax + tw + gv) / (tw + gv)) * (tw + gv) y_start = y_phase - INT((y_phase - tay + th + gh) / (th + gh)) * (th + gh) nx2 = INT((taw_end - x_start + gv) / (tw + gv)) + 1 ny2 = INT((tah_end - y_start + gh) / (th + gh)) + 1 FOR j = 0 TO ny2 - 1 FOR i = 0 TO nx2 - 1 x = x_start + i * (tw + gv) z = y_start + j * (th + gh) x_cut_start = MAX(x, tax) z_cut_start = MAX(z, tay) tw_cut2 = MIN(x + tw, taw_end) - x_cut_start th_cut2 = MIN(z + th, tah_end) - z_cut_start IF tw_cut2 > 0 AND th_cut2 > 0 THEN ADD x_cut_start, 0, z_cut_start BLOCK tw_cut2, tile_t, th_cut2 DEL 1 ENDIF NEXT i NEXT j endgroup ! 洞口切割 IF hole_r_on_1 OR hole_r_on_2 OR hole_r_on_3 OR hole_r_on_4 OR hole_r_on_5 OR hole_r_on_6 THEN group "w_holes" IF hole_r_on_1 THEN ADD hole_r_x_1, tile_t, hole_r_y_1 ROTX 90 PRISM_ 5, tile_t * 3, 0, 0, 15, hole_r_w_1, 0, 15, hole_r_w_1, hole_r_h_1, 15, 0, hole_r_h_1, 15, 0, 0, -1 DEL 2 ENDIF IF hole_r_on_2 THEN ADD hole_r_x_2, tile_t, hole_r_y_2 ROTX 90 PRISM_ 5, tile_t * 3, 0, 0, 15, hole_r_w_2, 0, 15, hole_r_w_2, hole_r_h_2, 15, 0, hole_r_h_2, 15, 0, 0, -1 DEL 2 ENDIF IF hole_r_on_3 THEN ADD hole_r_x_3, tile_t, hole_r_y_3 ROTX 90 PRISM_ 5, tile_t * 3, 0, 0, 15, hole_r_w_3, 0, 15, hole_r_w_3, hole_r_h_3, 15, 0, hole_r_h_3, 15, 0, 0, -1 DEL 2 ENDIF IF hole_r_on_4 THEN ADD hole_r_x_4, tile_t, hole_r_y_4 ROTX 90 PRISM_ 5, tile_t * 3, 0, 0, 15, hole_r_w_4, 0, 15, hole_r_w_4, hole_r_h_4, 15, 0, hole_r_h_4, 15, 0, 0, -1 DEL 2 ENDIF IF hole_r_on_5 THEN ADD hole_r_x_5, tile_t, hole_r_y_5 ROTX 90 PRISM_ 5, tile_t * 3, 0, 0, 15, hole_r_w_5, 0, 15, hole_r_w_5, hole_r_h_5, 15, 0, hole_r_h_5, 15, 0, 0, -1 DEL 2 ENDIF IF hole_r_on_6 THEN ADD hole_r_x_6, tile_t, hole_r_y_6 ROTX 90 PRISM_ 5, tile_t * 3, 0, 0, 15, hole_r_w_6, 0, 15, hole_r_w_6, hole_r_h_6, 15, 0, hole_r_h_6, 15, 0, 0, -1 DEL 2 ENDIF endgroup placegroup subgroup("w_tiles", "w_holes") killgroup "w_tiles" killgroup "w_holes" ELSE placegroup "w_tiles" killgroup "w_tiles" ENDIF IF chamfer_on THEN IF chamfer_t > 0 THEN ADDZ tah_end - chamfer_t CUTPLANE{2} 45 DEL 1 ENDIF IF chamfer_b > 0 THEN ADDZ tay + chamfer_b CUTPLANE{2} -45 DEL 1 ENDIF IF chamfer_r > 0 THEN ADD taw_end - chamfer_r, 0, 0 CUTPLANE{2} 45 DEL 1 ENDIF IF chamfer_l > 0 THEN ADD tax + chamfer_l, 0, 0 CUTPLANE{2} -45 DEL 1 ENDIF

Operating system used: Windows

Re: How to bevel around the edges of tiles

rudl — Sat, 13 Jun 2026 07:47:31 GMT

*) For cutplane perpendicular to xy: cutplane{2} needs 2 parameters according to the manual

*) cutplane needs a cutend, and all geometry should be between. See examples in manual
*) Not sure why the bottom cut doesn't work. My guess probably object is moved up and the cutplane is below:

ADD x_cut_start, 0, z_cut_start
BLOCK tw_cut2, tile_t, th_cut2
DEL 1

*) would avoid cutplanes and booleans in general if possible, depending on the situation.

Re: How to bevel around the edges of tiles

Lingwisyer — Mon, 15 Jun 2026 01:57:48 GMT

Should not your bottom cutplane have an extra 180? I found it easier to manipulate a basic cutplanes and rotate those with basic transformations instead...

Re: How to bevel around the edges of tiles

Daniella1985 — Tue, 16 Jun 2026 19:00:48 GMT

I have a new project: how to cut a 3D floor at a 45-degree angle, like a floor tool. I'm having trouble; I've failed many times with the syntax.

group "tiles" MATERIAL sur_mat x_phase = tile_offset_x - INT(tile_offset_x / (tw + gv)) * (tw + gv) y_phase = tile_offset_y - INT(tile_offset_y / (th + gh)) * (th + gh) tile_tax = tax tile_tay = tay tile_taw_end = taw_end tile_tah_end = tah_end cut_tax = tax cut_tay = tay cut_taw_end = taw_end cut_tah_end = tah_end IF chamfer_on THEN cut_tax = cut_tax - chamfer_l cut_tay = cut_tay - chamfer_b cut_taw_end = cut_taw_end + chamfer_r cut_tah_end = cut_tah_end + chamfer_t ENDIF x_start = x_phase - INT((x_phase - tile_tax + tw + gv) / (tw + gv)) * (tw + gv) y_start = y_phase - INT((y_phase - tile_tay + th + gh) / (th + gh)) * (th + gh) nx2 = INT((tile_taw_end - x_start + gv) / (tw + gv)) + 1 ny2 = INT((tile_tah_end - y_start + gh) / (th + gh)) + 1 FOR j = 0 TO ny2 - 1 FOR i = 0 TO nx2 - 1 x = x_start + i * (tw + gv) y = y_start + j * (th + gh) x_cut_start = MAX(x, cut_tax) y_cut_start = MAX(y, cut_tay) tw_cut2 = MIN(x + tw, cut_taw_end) - x_cut_start th_cut2 = MIN(y + th, cut_tah_end) - y_cut_start IF tw_cut2 > 0 AND th_cut2 > 0 THEN ADD x_cut_start, y_cut_start, 0 IF chamfer_on AND chamfer_t > 0 AND y_cut_start + th_cut2 >= tah_end - 0.001 THEN ch = MIN(chamfer_t, th_cut2) PRISM_ 5, tt, 0, 0, 15, tw_cut2, 0, 15, tw_cut2, th_cut2-ch, 15, tw_cut2-ch, th_cut2, 15, 0, th_cut2, -1 ELSE BLOCK tw_cut2, th_cut2, tt ENDIF DEL 1 ENDIF NEXT i NEXT j endgroup

Re: How to bevel around the edges of tiles

Barry Kelly — Tue, 16 Jun 2026 11:15:26 GMT

CPRISM_{2}, CPRISM_{3} & CPRISM_{4} will allow you to set materials and an angle to each edge of the PRISM.

No need for cutplanes.

Barry.

Re: How to bevel around the edges of tiles

Lingwisyer — Wed, 17 Jun 2026 01:13:43 GMT

As long as you are pivoting from the x-y plane?

Re: How to bevel around the edges of tiles

Barry Kelly — Wed, 17 Jun 2026 01:40:37 GMT

The edge angle originate from the top surface of the prism.

0 is vertical.

Positive figure extends base out.

Negative angle shrinks base in.

As Daniella is modelling individual tiles, a bit of clever scripting will be needed to control the edge of each tile, so only the outer tiles are affected.

I would model one big slab for all of the tiles and then add lines to represent the individual tiles.

Or model individual tiles in a loop (as has been done) and add cutplanes outside of that loop to cut the overall mass of tiles.

Barry.

Re: How to bevel around the edges of tiles

AllanP — Wed, 17 Jun 2026 04:39:01 GMT

There is an easier way to bevel each tile.

FPRISM_
FPRISM_ top_material, bottom_material, side_material, hill_material,
n, thickness, angle, hill_height,
x1, y1, s1,
...
xn, yn, sn

Similar to the PRISM_ command, with the additional hill_material, angle and hill_height parameters for forming a ramp on the top.
hill_material: the side material of the ramp part.
angle: the inclination angle of the ramp side edges.
Restriction: 0 <= angle < 90.
If angle = 0, the hill side edges seen from an orthogonal view form a quarter circle with the current resolution (see the RADIUS command,
the RESOL command and the TOLER command).
hill_height: the height of the ramp. Note that the thickness parameter represents the whole height of the prism.

si: status code that allows you to control the visibility of polygon edges and side surfaces. You can also define holes and create segments
and arcs in the polyline using special constraints.
Restriction of parameters:
n >= 3, hill_height < thickness
See Status Codes for details.

RESOL 10
FPRISM_ "Roof Tile", "Brick-Red", "Brick-White", "Roof Tile",
4, 1.5, 0, 1.0, !angle = 0 (which gives curved edge)
0, 0, 15,
5, 0, 15,
5, 4, 15,
0, 4, 15

FPRISM_ "Roof Tile", "Brick-Red", "Brick-White",
"Roof Tile",
10, 2, 45, 1,
0, 0, 15,
6, 0, 15,
6, 5, 15,
0, 5, 15,
0, 0, -1,
1, 2, 15,
4, 2, 15,
4, 4, 15,
1, 4, 15,
1, 2, -1

I hope this helps.

Re: How to bevel around the edges of tiles

Lingwisyer — Wed, 17 Jun 2026 05:13:21 GMT

Only works if you are wanting to bevel all of your top corners the same amount. Given that they have toggle for each of the four sides, I assume this is not the case so FPRISM_ will not work...

Re: How to bevel around the edges of tiles

Piotr Dobrowolski — Thu, 18 Jun 2026 09:56:36 GMT

If the bevel angle is about to be equal...then why not use the FPRISM_ or HPRISM_ commands? (EDIT: sorry did not notice the whole passage about them above)

I used that for my tiling objects/accesories.

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