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Add scad files

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litter 2020-02-11 18:10:48 -05:00
parent 43d2034576
commit d49e7c5bba
2 changed files with 85 additions and 0 deletions
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72
scad/16mm_film.scad Normal file
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STRIPS = 12;
FRAMES = 33;
PERFS = "single";
PITCH = "long";
module rounded_cube (cube_arr = [1, 1, 1], d = 0, center = false) {
off_x = 0;
off_y = 0;
r = d/2;
union () {
cube([cube_arr[0] - d, cube_arr[1], cube_arr[2]], center = center);
cube([cube_arr[0], cube_arr[1] - d, cube_arr[2]], center = center);
translate ([1 * (cube_arr[0] / 2) - r , 1 * (cube_arr[1] / 2)- r, 0]) cylinder(r = r, h = cube_arr[2], center = center);
translate ([-1 * (cube_arr[0] / 2) + r, -1 * (cube_arr[1] / 2) + r, 0]) cylinder(r = r, h = cube_arr[2], center = center);
translate ([1 * (cube_arr[0] / 2) - r, -1 * (cube_arr[1] / 2) + r, 0]) cylinder(r = r, h = cube_arr[2], center = center);
translate ([-1 * (cube_arr[0] / 2) + r, 1 * (cube_arr[1] / 2)- r, 0]) cylinder(r = r, h = cube_arr[2], center = center);
}
}
module 16mm_perf () {
$fn = 10;
PERF_W = 1.829;
PERF_H = 1.27;
rounded_cube([PERF_W, PERF_H, 2], d = .5, center = true);
}
module 16mm_film (frames = 10, double = false, long = true) {
THICKNESS = 0.0047 * 25.4;
WIDTH = 16;
SPACING_LONG = 7.62; //long pitch (projection)
SPACING_SHORT = 7.605; //short pitch
PERF_OFFSET = (1.829 / 2) + .85;
difference () {
if (long) {
cube([WIDTH, SPACING_LONG * frames, THICKNESS], center = true);
} else {
cube([WIDTH, SPACING_SHORT * frames, THICKNESS], center = true);
}
if (long) {
OFFSET = (SPACING_LONG * frames) / 2;
for (i = [0 : frames]) {
translate([8 - PERF_OFFSET, -OFFSET + SPACING_LONG * i, 0]) 16mm_perf();
}
if (double) {
for (i = [0 : frames]) {
translate([-8 + PERF_OFFSET, -OFFSET + SPACING_LONG * i, 0]) 16mm_perf();
}
}
} else {
OFFSET = (SPACING_SHORT * frames) / 2;
for (i = [0 : frames]) {
translate([8 - PERF_OFFSET, -OFFSET + SPACING_LONG * i, 0]) 16mm_perf();
}
if (double) {
for (i = [0 : frames]) {
translate([-8 + PERF_OFFSET, -OFFSET + SPACING_LONG * i, 0]) 16mm_perf();
}
}
}
}
}
projection() for (i = [0:STRIPS - 1]) {
translate([16.01 * i, 0, 0]) {
16mm_film(FRAMES, PERFS == "double", PITCH == "long");
}
}
echo("STRIP LENGTH", (PITCH == "long" ? 7.62 : 7.605) * FRAMES, "mm");
echo("PAGE WIDTH", 16 * STRIPS, "mm");
echo("PITCH", PITCH);
echo("PERFS", PERFS);

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scad/filmless_calibration.scad Normal file
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W = 192;
H = 251.45999;
module block (x, y) {
translate([x, y, 0]) cube([10, 10, 10], center = true);
}
projection () {
block(0, 0);
block(W - 10, 0);
block(W -10, H - 10);
block(0, H - 10);
}