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Merge branch 'revarbat_dev' of github.com:BelfrySCAD/BOSL2 into revarbat_dev

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Revar Desmera 2023-08-03 17:21:51 -07:00
commit add0e22901
2 changed files with 28 additions and 9 deletions
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17
gears.scad
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@ -311,8 +311,19 @@ function _inherit_gear_thickness(thickness) =
// Subsection: Ring Gears (Internal Gears) // Subsection: Ring Gears (Internal Gears)
// A ring gear (or internal gear) is a gear where the teeth are on the inside of a circle. Such gears must be mated // A ring gear (or internal gear) is a gear where the teeth are on the inside of a circle. Such gears must be mated
// to a regular (external) gear, which rotates around the inside. // to a regular (external) gear, which rotates around the inside.
// Figure(3D,Med,NoAxes,VPT=[10.3822,-19.892,16.1929],VPR=[55.7,0,30.6],VPD=401.516): A interior or ring gear // Figure(2D,Med,NoAxes,VPT=[0.491171,1.07815,0.495977],VPR=[0,0,0],VPD=292.705): A interior or ring gear (yellow) with a mating spur gear (blue)
// ring_gear(mod=5, teeth=35,thickness=25,$fn=128); // teeth1=18;
// teeth2=30;
// ps1=undef;
// ps2=auto_profile_shift(teeth=teeth1);
// mod=3;
// d = gear_dist(mod=mod, teeth1=teeth1, teeth2=teeth2,profile_shift1=ps1, profile_shift2=ps2,helical=0, internal2=true);
// ang = 0;
// ring_gear2d(mod=mod, teeth=teeth2,profile_shift=ps2,helical=0,backing=4);
// zrot(ang*360/teeth2)
// color("lightblue")
// fwd(d)
// spur_gear2d(mod=mod, teeth=teeth1, profile_shift=ps1,gear_spin=-ang*360/teeth1,helical=0);
// Continues: // Continues:
// Ring gears are subject to all the usual mesh requirements: the teeth must be the same size, the pressure angles must // Ring gears are subject to all the usual mesh requirements: the teeth must be the same size, the pressure angles must
// match and they must have opposite helical angles. The {{gear_dist()}} function can give the center separation of // match and they must have opposite helical angles. The {{gear_dist()}} function can give the center separation of
@ -320,7 +331,7 @@ function _inherit_gear_thickness(thickness) =
// teeth is small or the teeth counts of the ring gear and spur gear are too close together. The mating spur gear must // teeth is small or the teeth counts of the ring gear and spur gear are too close together. The mating spur gear must
// have few enough teeth so that the teeth don't interfere on the other side of the ring. Very small spur gears can interfere // have few enough teeth so that the teeth don't interfere on the other side of the ring. Very small spur gears can interfere
// on the tips of the ring gear's teeth. // on the tips of the ring gear's teeth.
// Figure(2D,Med,NoAxes,VPR=[0,0,0],VPT=[-1.16111,0.0525612,0.495977],VPD=213.382): The red regions show interference between the two gears: the 18 tooth spur gear does not fit inside the 20 tooth ring gear. // Figure(2D,Med,NoAxes,VPT=[-1.16111,0.0525612,0.495977],VPR=[0,0,0],VPD=213.382): The red regions show interference between the two gears: the 18 tooth spur gear does not fit inside the 20 tooth ring gear.
// teeth1=18; // teeth1=18;
// teeth2=20; // teeth2=20;
// ps1=undef; // ps1=undef;

20
skin.scad
View file

@ -636,6 +636,11 @@ function skin(profiles, slices, refine=1, method="direct", sampling, caps, close
// ] // ]
// ]; // ];
// linear_sweep(path, texture=tex, tex_size=[5,5], h=40); // linear_sweep(path, texture=tex, tex_size=[5,5], h=40);
// Example: Textured with twist and scale.
// linear_sweep(regular_ngon(n=3, d=50),
// texture="rough", h=100, tex_scale=2,
// tex_size=[20,20], style="min_edge",
// convexity=10, scale=0.2, twist=120);
// Example: As Function // Example: As Function
// path = glued_circles(r=15, spread=40, tangent=45); // path = glued_circles(r=15, spread=40, tangent=45);
// vnf = linear_sweep( // vnf = linear_sweep(
@ -664,7 +669,7 @@ function skin(profiles, slices, refine=1, method="direct", sampling, caps, close
// linear_sweep(circle(20), texture=tile, // linear_sweep(circle(20), texture=tile,
// tex_size=[30,20],tex_scale=15, // tex_size=[30,20],tex_scale=15,
// h=40,convexity=4); // h=40,convexity=4);
// Example: This example shoes some endcap polygons missing and a spurious triangle // Example: This example shows some endcap polygons missing and a spurious triangle
// shape = skin([rect(2/5), // shape = skin([rect(2/5),
// rect(2/3), // rect(2/3),
// rect(2/5)], // rect(2/5)],
@ -3634,14 +3639,15 @@ function _textured_linear_sweep(
let( let(
v = (i + (ti/texcnt.y)) / counts.y, v = (i + (ti/texcnt.y)) / counts.y,
sc = lerp([1, 1, 1], scale, v), sc = lerp([1, 1, 1], scale, v),
mat = down((v-0.5)*h) * mat = up((v-0.5)*h) *
scale(sc) * scale(sc) *
zrot(twist*v) zrot(twist*v)
) apply(mat, tile_rows[ti]) ) apply(mat, tile_rows[texcnt.y-ti-1])
] ]
) vnf_vertex_array( ) vnf_vertex_array(
tiles, caps=false, style=style, tiles, caps=false, style=style,
col_wrap=true, row_wrap=false col_wrap=true, row_wrap=false,
reverse=true
) )
) vnf ) vnf
]), ]),
@ -3670,8 +3676,10 @@ function _textured_linear_sweep(
] ]
) nupath ) nupath
], ],
bot_vnf = !caps[0] || brgn==[[]] ? EMPTY_VNF:vnf_from_region(brgn, down(h/2), reverse=true), bot_vnf = !caps[0] || brgn==[[]] ? EMPTY_VNF
top_vnf = !caps[1] || brgn==[[]] ? EMPTY_VNF:vnf_from_region(brgn, tmat, reverse=false) : vnf_from_region(brgn, down(h/2), reverse=true),
top_vnf = !caps[1] || brgn==[[]] ? EMPTY_VNF
: vnf_from_region(brgn, tmat, reverse=false)
) vnf_join([walls_vnf, bot_vnf, top_vnf]) ) vnf_join([walls_vnf, bot_vnf, top_vnf])
]), ]),
skmat = down(h/2) * skew(sxz=shift.x/h, syz=shift.y/h) * up(h/2), skmat = down(h/2) * skew(sxz=shift.x/h, syz=shift.y/h) * up(h/2),