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https://github.com/kennetek/gridfinity-rebuilt-openscad.git
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Updated solid base creation logic
* Simplified. * More readable. * Prevents gaps that could be left by old logic. (rounded_square)
This commit is contained in:
parent
1ee99f9c6f
commit
d47043fa51
4 changed files with 102 additions and 62 deletions
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@ -341,7 +341,7 @@ module square_baseplate_lip(height=0, size = l_grid) {
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corner_center_distance = size/2 - BASEPLATE_OUTSIDE_RADIUS;
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corner_center_distance = size/2 - BASEPLATE_OUTSIDE_RADIUS;
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render(convexity = 2) // Fixes ghosting in preview
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//render(convexity = 2) // Fixes ghosting in preview
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union() {
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union() {
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baseplate_lip(height, size, size);
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baseplate_lip(height, size, size);
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pattern_circular(4)
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pattern_circular(4)
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@ -88,7 +88,7 @@ x_l = l_grid/2;
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dht = (gridz_define==0)?gridz*7 : (gridz_define==1)?h_bot+gridz+h_base : gridz-(enable_lip?3.8:0);
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dht = (gridz_define==0)?gridz*7 : (gridz_define==1)?h_bot+gridz+h_base : gridz-(enable_lip?3.8:0);
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d_height = (enable_zsnap?((abs(dht)%7==0)?dht:dht+7-abs(dht)%7):dht)-h_base;
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d_height = (enable_zsnap?((abs(dht)%7==0)?dht:dht+7-abs(dht)%7):dht)-h_base;
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d_fo1 = 2*+BASE_OUTSIDE_RADIUS;
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d_fo1 = 2*+BASE_TOP_RADIUS;
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f2c = sqrt(2)*(sqrt(2)-1); // fillet to chamfer ratio
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f2c = sqrt(2)*(sqrt(2)-1); // fillet to chamfer ratio
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me = ((gridx*l_grid-0.5)/n_divx)-nozzle*4-d_fo1-12.7-4;
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me = ((gridx*l_grid-0.5)/n_divx)-nozzle*4-d_fo1-12.7-4;
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@ -171,7 +171,7 @@ module gridfinityBaseVase() {
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intersection() {
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intersection() {
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block_base_blank(0);
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block_base_blank(0);
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translate([0,0,-h_base-1])
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translate([0,0,-h_base-1])
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rounded_square([l_grid-0.5-0.005, l_grid-0.5-0.005, h_base*10], BASE_OUTSIDE_RADIUS+0.001, center=true);
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rounded_square([l_grid-0.5-0.005, l_grid-0.5-0.005, h_base*10], BASE_TOP_RADIUS+0.001, center=true);
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}
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}
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translate([0,0,0.01])
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translate([0,0,0.01])
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difference() {
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difference() {
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@ -239,7 +239,7 @@ module block_base_blank(o = 0) {
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rounded_square(l_grid-o-0.05-2*r_c2, r_fo2, center=true);
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rounded_square(l_grid-o-0.05-2*r_c2, r_fo2, center=true);
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mirror([0,0,1])
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mirror([0,0,1])
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linear_extrude(d_bottom)
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linear_extrude(d_bottom)
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rounded_square(l_grid-o-0.05, BASE_OUTSIDE_RADIUS, center=true);
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rounded_square(l_grid-o-0.05, BASE_TOP_RADIUS, center=true);
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}
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}
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}
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}
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}
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}
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@ -217,12 +217,12 @@ module cut_move(x, y, w, h) {
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// ===== Modules ===== //
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// ===== Modules ===== //
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/**
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/**
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*@summary Create the base of a gridfinity bin, or use it for a custom object.
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* @brief Create the base of a gridfinity bin, or use it for a custom object.
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* @param grid_size Number of bases in each dimension. [x, y]
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* @param grid_size Number of bases in each dimension. [x, y]
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* @param grid_dimensions [length, width] of a single Gridfinity base.
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* @param grid_dimensions [length, width] of a single Gridfinity base.
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* @param thumbscrew Enable "gridfinity-refined" thumbscrew hole in the center of each base unit. This is a ISO Metric Profile, 15.0mm size, M15x1.5 designation.
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* @param thumbscrew Enable "gridfinity-refined" thumbscrew hole in the center of each base unit. This is a ISO Metric Profile, 15.0mm size, M15x1.5 designation.
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*/
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*/
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module gridfinityBase(grid_size, grid_dimensions=[l_grid, l_grid], hole_options=bundle_hole_options(), off=0, final_cut=true, only_corners=false, thumbscrew=false) {
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module gridfinityBase(grid_size, grid_dimensions=GRID_DIMENSIONS_MM, hole_options=bundle_hole_options(), off=0, final_cut=true, only_corners=false, thumbscrew=false) {
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assert(is_list(grid_dimensions) && len(grid_dimensions) == 2 &&
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assert(is_list(grid_dimensions) && len(grid_dimensions) == 2 &&
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grid_dimensions.x > 0 && grid_dimensions.y > 0);
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grid_dimensions.x > 0 && grid_dimensions.y > 0);
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assert(is_list(grid_size) && len(grid_size) == 2 &&
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assert(is_list(grid_size) && len(grid_size) == 2 &&
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@ -235,7 +235,7 @@ module gridfinityBase(grid_size, grid_dimensions=[l_grid, l_grid], hole_options=
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// Per spec, there's a 0.5mm gap between each base.
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// Per spec, there's a 0.5mm gap between each base.
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// This must be kept constant or half bins may not work correctly.
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// This must be kept constant or half bins may not work correctly.
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gap_mm = l_grid - BASE_SIZE;
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gap_mm = GRID_DIMENSIONS_MM - BASE_TOP_DIMENSIONS;
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// Divisions per grid
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// Divisions per grid
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// Normal, half, or quarter grid sizes supported.
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// Normal, half, or quarter grid sizes supported.
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@ -249,22 +249,26 @@ module gridfinityBase(grid_size, grid_dimensions=[l_grid, l_grid], hole_options=
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final_grid_size = [grid_size.x * divisions_per_grid.x, grid_size.y * divisions_per_grid.y];
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final_grid_size = [grid_size.x * divisions_per_grid.x, grid_size.y * divisions_per_grid.y];
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base_center_distance_mm = [grid_dimensions.x / divisions_per_grid.x, grid_dimensions.y / divisions_per_grid.y];
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base_center_distance_mm = [grid_dimensions.x / divisions_per_grid.x, grid_dimensions.y / divisions_per_grid.y];
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individual_base_size_mm = [base_center_distance_mm.x - gap_mm, base_center_distance_mm.y - gap_mm];
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individual_base_size_mm = [base_center_distance_mm.x, base_center_distance_mm.y] - gap_mm;
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// Final size of the base top. In mm.
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// Final size of the base top. In mm.
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// subtracting gap_mm here to remove an outer lip along the peremiter.
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// subtracting gap_mm here to remove an outer lip along the peremiter.
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grid_size_mm = [
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grid_size_mm = [
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base_center_distance_mm.x * final_grid_size.x - gap_mm,
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base_center_distance_mm.x * final_grid_size.x,
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base_center_distance_mm.y * final_grid_size.y - gap_mm
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base_center_distance_mm.y * final_grid_size.y
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];
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] - gap_mm;
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// Top which ties all bases together
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// Top which ties all bases together
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if (final_cut) {
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if (final_cut) {
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translate([0, 0, h_base-TOLLERANCE])
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translate([0, 0, h_base-TOLLERANCE])
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rounded_square([grid_size_mm.x, grid_size_mm.y, h_bot], BASE_OUTSIDE_RADIUS, center=true);
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rounded_square([grid_size_mm.x, grid_size_mm.y, h_bot], BASE_TOP_RADIUS, center=true);
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}
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}
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if(only_corners) {
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if(only_corners) {
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hole_position = foreach_add(
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grid_size_mm/2,
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- HOLE_DISTANCE_FROM_BOTTOM_EDGE - BASE_PROFILE_MAX.x
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);
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difference(){
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difference(){
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pattern_linear(final_grid_size.x, final_grid_size.y, base_center_distance_mm.x, base_center_distance_mm.y)
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pattern_linear(final_grid_size.x, final_grid_size.y, base_center_distance_mm.x, base_center_distance_mm.y)
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block_base(bundle_hole_options(), 0, individual_base_size_mm, thumbscrew=thumbscrew);
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block_base(bundle_hole_options(), 0, individual_base_size_mm, thumbscrew=thumbscrew);
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@ -272,8 +276,8 @@ module gridfinityBase(grid_size, grid_dimensions=[l_grid, l_grid], hole_options=
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copy_mirror([0, 1, 0]) {
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copy_mirror([0, 1, 0]) {
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copy_mirror([1, 0, 0]) {
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copy_mirror([1, 0, 0]) {
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translate([
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translate([
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grid_size_mm.x/2 - HOLE_DISTANCE_FROM_BOTTOM_EDGE - BASE_PROFILE_MAX.x,
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hole_position.x,
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grid_size_mm.y/2 - HOLE_DISTANCE_FROM_BOTTOM_EDGE - BASE_PROFILE_MAX.x,
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hole_position.y,
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0
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0
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])
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])
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block_base_hole(hole_options, off);
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block_base_hole(hole_options, off);
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@ -287,31 +291,38 @@ module gridfinityBase(grid_size, grid_dimensions=[l_grid, l_grid], hole_options=
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}
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}
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}
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}
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/**
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* @brief Solid polygon of a gridfinity base.
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* @details Ready for use with `sweep_rounded(...)`.
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*/
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module base_polygon() {
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translated_line = foreach_add(BASE_PROFILE, [BASE_BOTTOM_RADIUS, 0]);
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solid_profile = concat(translated_line,
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[
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[0, BASE_PROFILE_MAX.y], // Go in to form a solid polygon
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[0, 0], // Needed since start has been translated.
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]
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);
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polygon(solid_profile);
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}
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/**
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/**
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* @brief A single Gridfinity base. With holes (if set).
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* @brief A single Gridfinity base. With holes (if set).
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* @param hole_options @see block_base_hole.hole_options
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* @param hole_options @see block_base_hole.hole_options
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* @param off
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* @param off
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* @param size [x, y] size of a single base. Only set if deviating from the standard!
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* @param top_dimensions [x, y] size of a single base. Only set if deviating from the standard!
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* @param thumbscrew Enable "gridfinity-refined" thumbscrew hole in the center of each base unit. This is a ISO Metric Profile, 15.0mm size, M15x1.5 designation.
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* @param thumbscrew Enable "gridfinity-refined" thumbscrew hole in the center of each base unit. This is a ISO Metric Profile, 15.0mm size, M15x1.5 designation.
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*/
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*/
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module block_base(hole_options, off=0, size=[BASE_SIZE, BASE_SIZE], thumbscrew=false) {
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module block_base(hole_options, off=0, top_dimensions=BASE_TOP_DIMENSIONS, thumbscrew=false) {
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assert(
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assert(is_list(top_dimensions) && len(top_dimensions) == 2);
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is_list(size) &&
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assert(is_bool(thumbscrew));
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len(size) == 2 &&
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is_bool(thumbscrew)
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);
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// How far, in the +x direction,
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base_bottom = base_bottom_dimensions(top_dimensions);
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// the profile needs to be from it's [0, 0] point
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sweep_inner = foreach_add(base_bottom, -2*BASE_BOTTOM_RADIUS);
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// such that when swept by 90 degrees to produce a corner,
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cube_size = foreach_add(base_bottom, -BASE_BOTTOM_RADIUS);
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// the outside edge has the desired radius.
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translation_x = BASE_OUTSIDE_RADIUS - BASE_PROFILE_MAX.x;
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outer_diameter = [2*BASE_OUTSIDE_RADIUS, 2*BASE_OUTSIDE_RADIUS];
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assert(sweep_inner.x > 0 && sweep_inner.y > 0,
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base_profile_size = size - outer_diameter;
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str("Minimum size of a single base must be greater than ", 2*BASE_TOP_RADIUS)
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base_bottom_size = base_profile_size + [2*translation_x, 2*translation_x];
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assert(base_profile_size.x > 0 && base_profile_size.y > 0,
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str("Minimum size of a single base must be greater than ", outer_diameter)
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);
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);
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thumbscrew_outerdiam = 15;
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thumbscrew_outerdiam = 15;
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@ -323,20 +334,12 @@ module block_base(hole_options, off=0, size=[BASE_SIZE, BASE_SIZE], thumbscrew=f
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render(convexity = 2)
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render(convexity = 2)
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difference() {
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difference() {
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union() {
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union(){
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sweep_rounded(base_profile_size)
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sweep_rounded(sweep_inner)
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translate([translation_x, 0, 0])
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base_polygon();
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polygon(BASE_PROFILE);
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rounded_square(
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translate([0, 0, BASE_PROFILE_MAX.y/2])
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[
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cube([cube_size.x, cube_size.y, BASE_PROFILE_MAX.y], center=true);
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base_bottom_size.x + TOLLERANCE,
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base_bottom_size.y + TOLLERANCE,
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BASE_PROFILE_MAX.y
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],
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translation_x,
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center=true
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);
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}
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}
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if (thumbscrew) {
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if (thumbscrew) {
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@ -357,8 +360,8 @@ module block_base(hole_options, off=0, size=[BASE_SIZE, BASE_SIZE], thumbscrew=f
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j = sign(sin(a+1));
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j = sign(sin(a+1));
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i = sign(cos(a+1));
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i = sign(cos(a+1));
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translate([
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translate([
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i * (base_bottom_size.x/2 - HOLE_DISTANCE_FROM_BOTTOM_EDGE),
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i * (base_bottom.x/2 - HOLE_DISTANCE_FROM_BOTTOM_EDGE),
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j * (base_bottom_size.y/2 - HOLE_DISTANCE_FROM_BOTTOM_EDGE),
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j * (base_bottom.y/2 - HOLE_DISTANCE_FROM_BOTTOM_EDGE),
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0])
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0])
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rotate([0, 0, a])
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rotate([0, 0, a])
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block_base_hole(hole_options, off);
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block_base_hole(hole_options, off);
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@ -3,9 +3,16 @@
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r_c1 = 0.8;
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r_c1 = 0.8;
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// bottom thiccness of bin
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// bottom thiccness of bin
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h_bot = 2.2;
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h_bot = 2.2;
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// length of a grid unit
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l_grid = 42;
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/**
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* @brief Size of a single gridfinity unit. [Length, Width] In millimeters.
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*/
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GRID_DIMENSIONS_MM = [42, 42];
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/**
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* @deprecated Use GRID_DIMENSIONS_MM instead.
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*/
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l_grid = GRID_DIMENSIONS_MM.x;
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// Outside rounded radius of bin
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// Outside rounded radius of bin
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// Per spec, matches radius of upper base section.
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// Per spec, matches radius of upper base section.
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@ -96,8 +103,9 @@ STACKING_LIP_SUPPORT_HEIGHT = 1.2;
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/**
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/**
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* @Summary Stacking lip as defined in the spec. No support.
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* @Summary Stacking lip as defined in the spec. No support.
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* @Details This is just a line, and will not create a solid polygon.
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*/
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*/
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RAW_STACKING_LIP = [
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STACKING_LIP_LINE = [
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[0, 0], // Inner tip
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[0, 0], // Inner tip
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[0.7, 0.7], // Go out 45 degrees
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[0.7, 0.7], // Go out 45 degrees
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[0.7, (0.7+1.8)], // Vertical increase
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[0.7, (0.7+1.8)], // Vertical increase
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@ -110,7 +118,7 @@ RAW_STACKING_LIP = [
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* Including wall thickness.
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* Including wall thickness.
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* "y": The height of the stacking lip.
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* "y": The height of the stacking lip.
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*/
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*/
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STACKING_LIP_SIZE = RAW_STACKING_LIP[3];
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STACKING_LIP_SIZE = STACKING_LIP_LINE[3];
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_stacking_lip_support_angle = 45;
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_stacking_lip_support_angle = 45;
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@ -123,40 +131,69 @@ _stacking_lip_support_height_mm =
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+ tan(90 - _stacking_lip_support_angle) * STACKING_LIP_SIZE.x;
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+ tan(90 - _stacking_lip_support_angle) * STACKING_LIP_SIZE.x;
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/**
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/**
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* @Summary Stacking lip with a support.
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* @Summary Stacking lip with a support. Used to create a polygon.
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* @Details Support is so the stacking lip is not floating in mid air when wall width is less than stacking lip depth.
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* @Details Support is so the stacking lip is not floating in mid air when wall width is less than stacking lip depth.
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*/
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*/
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STACKING_LIP = concat(RAW_STACKING_LIP, [
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STACKING_LIP = concat(STACKING_LIP_LINE, [
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[STACKING_LIP_SIZE.x, -_stacking_lip_support_height_mm], // Down to support bottom
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[STACKING_LIP_SIZE.x, -_stacking_lip_support_height_mm], // Down to support bottom
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[0, -STACKING_LIP_SUPPORT_HEIGHT], // Up and in (to bottom inner support)
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[0, -STACKING_LIP_SUPPORT_HEIGHT], // Up and in (to bottom inner support)
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[0, 0] // Close the shape. Technically not needed.
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//[0, 0] // Implicit back to start
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]);
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]);
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// ****************************************
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// ****************************************
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// Base constants
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// Base constants
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// Based on https://gridfinity.xyz/specification/
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// Based on https://gridfinity.xyz/specification/
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// ****************************************
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// ****************************************
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BASE_OUTSIDE_RADIUS = r_base;
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/**
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* @Summary Profile of a Gridfinity base as described in the spec.
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* @Details This is just a line, and will not create a solid polygon.
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*/
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BASE_PROFILE = [
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BASE_PROFILE = [
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[0, 0], // Innermost bottom point
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[0, 0], // Innermost bottom point
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[0.8, 0.8], // Up and out at a 45 degree angle
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[0.8, 0.8], // Up and out at a 45 degree angle
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[0.8, (0.8+1.8)], // Straight up
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[0.8, (0.8+1.8)], // Straight up
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[(0.8+2.15), (0.8+1.8+2.15)], // Up and out at a 45 degree angle
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[(0.8+2.15), (0.8+1.8+2.15)] // Up and out at a 45 degree angle
|
||||||
[0, (0.8+1.8+2.15)], // Go in to form a solid polygon
|
|
||||||
[0, 0] //Back to start
|
|
||||||
];
|
];
|
||||||
|
|
||||||
// Maximum [x,y] values/size of the base.
|
/**
|
||||||
|
* @Summary Corner radius of the top of the base.
|
||||||
|
*/
|
||||||
|
BASE_TOP_RADIUS = r_base;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @Summary Size of the top of the base. [Length, Width]
|
||||||
|
* @Details Each unit's base is 41.5mm x 41.5mm
|
||||||
|
* Leaving 0.5mm gap with an l_grid of 42
|
||||||
|
*/
|
||||||
|
BASE_TOP_DIMENSIONS = [41.5, 41.5];
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @Summary Maximum [x,y] values/size of the base.
|
||||||
|
*/
|
||||||
BASE_PROFILE_MAX = BASE_PROFILE[3];
|
BASE_PROFILE_MAX = BASE_PROFILE[3];
|
||||||
|
|
||||||
// Each unit's base is 41.5mm x 41.5mm
|
/**
|
||||||
// Leaving 0.5mm gap with an l_grid of 42
|
* @Summary Corner radius of the bottom of the base.
|
||||||
BASE_SIZE = 41.5;
|
* @Details This is also how much BASE_PROFILE needs to be translated
|
||||||
|
* to use `sweep_rounded(...)`.
|
||||||
|
*/
|
||||||
|
BASE_BOTTOM_RADIUS = BASE_TOP_RADIUS - BASE_PROFILE_MAX.x;
|
||||||
|
|
||||||
|
/**
|
||||||
|
* @Summary Dimensions of the bottom of the base. [Length, Width]
|
||||||
|
* @Details Supports arbitrary top sizes.
|
||||||
|
* @param top_dimensions [Length, Width] of the top of the base.
|
||||||
|
*/
|
||||||
|
function base_bottom_dimensions(top_dimensions = BASE_TOP_DIMENSIONS) =
|
||||||
|
assert(is_list(top_dimensions) && len(top_dimensions) == 2
|
||||||
|
&& is_num(top_dimensions.x) && is_num(top_dimensions.y))
|
||||||
|
[top_dimensions.x - 2*BASE_PROFILE_MAX.x,
|
||||||
|
top_dimensions.y - 2*BASE_PROFILE_MAX.x];
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* @summary Height of the raw base
|
* @summary Height of the raw base
|
||||||
|
* @Deprecated
|
||||||
*/
|
*/
|
||||||
h_base = BASE_PROFILE_MAX.y;
|
h_base = BASE_PROFILE_MAX.y;
|
||||||
|
|
||||||
|
@ -174,7 +211,7 @@ BASEPLATE_LIP = [
|
||||||
[0.7, (0.7+1.8)], // Straight up
|
[0.7, (0.7+1.8)], // Straight up
|
||||||
[(0.7+2.15), (0.7+1.8+2.15)], // Up and out at a 45 degree angle
|
[(0.7+2.15), (0.7+1.8+2.15)], // Up and out at a 45 degree angle
|
||||||
[(0.7+2.15), 0], // Straight down
|
[(0.7+2.15), 0], // Straight down
|
||||||
[0, 0] //Back to start
|
//[0, 0] // Implicit back to start
|
||||||
];
|
];
|
||||||
|
|
||||||
// Height of the baseplate lip.
|
// Height of the baseplate lip.
|
||||||
|
|
Loading…
Reference in a new issue