141 lines
4.6 KiB
OpenSCAD
141 lines
4.6 KiB
OpenSCAD
base_length = 230;
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base_width = 110;
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base_height = 10;
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floor_depth = 2;
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wall_width = 2;
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glass_down = 5;
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glass_recess = 2;
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leg_offset = 2;
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leg = 5;
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module pit() {
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translate([0,0,floor_depth]) cube([base_length,
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base_width,
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base_height],true);
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}
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function base_offset() = (leg+leg_offset+glass_recess+wall_width)*2;
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module base_platform() {
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cube([
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base_length+base_offset(),
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base_width+base_offset(),
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base_height+floor_depth], true);
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}
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module base() {
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difference(){
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base_platform();
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translate([0,0,(base_height+floor_depth)/2-glass_down/2])
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cube([
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base_length+(wall_width+glass_recess)*2,
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base_width+(wall_width+glass_recess)*2,
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glass_down],true);
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}
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cube([base_length+(wall_width*2),
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base_width+(wall_width*2),
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base_height+floor_depth],true);
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}
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module carve_cave() {
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difference() {
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base();
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pit();
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}
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}
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module triangle_braces() {
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translate([base_length/2+leg_offset+glass_recess+wall_width, 0, -base_height/2 -floor_depth/2])
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rotate([90,0,0])
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linear_extrude(height = base_width+(leg+leg_offset+glass_recess+wall_width)*2, center = true) polygon(points=[[leg,0],[leg,base_height + floor_depth],[0,base_height + floor_depth]]);
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translate([-(base_length/2+leg_offset+glass_recess+wall_width)-leg, 0, -base_height/2 -floor_depth/2])
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rotate([90,0,0])
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linear_extrude(height = base_width+(leg+leg_offset+glass_recess+wall_width)*2, center = true) polygon(points=[[0,0],[leg,base_height + floor_depth],[0,base_height + floor_depth]]);
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translate([0, -(base_width/2+leg+leg_offset+glass_recess+wall_width), -base_height/2 -floor_depth/2])
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rotate([90,0,90])
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linear_extrude(height = base_length+(leg+leg_offset+glass_recess+wall_width)*2, center = true) polygon(points=[[0,0],[leg,base_height + floor_depth],[0,base_height + floor_depth]]);
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translate([0, (base_width/2+leg_offset+glass_recess+wall_width), -base_height/2 -floor_depth/2])
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rotate([90,0,90])
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linear_extrude(height = base_length+(leg+leg_offset+glass_recess+wall_width)*2, center = true) polygon(points=[[leg,0],[leg,base_height + floor_depth],[0,base_height + floor_depth]]);
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}
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module curved_braces() {
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translate([base_length/2+leg_offset+glass_recess+wall_width, 0, -base_height/2 -floor_depth/2])
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rotate([90,0,0])
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linear_extrude(height = base_width+(leg+leg_offset+glass_recess+wall_width)*2, center = true) polygon(points=curvedRightTriangle([leg,base_height + floor_depth],[leg,0],[0,base_height + floor_depth], 10, 0.2)[1]);
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translate([-(base_length/2+leg_offset+glass_recess+wall_width)-leg, 0, -base_height/2 -floor_depth/2])
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rotate([90,0,0])
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linear_extrude(height = base_width+(leg+leg_offset+glass_recess+wall_width)*2, center = true) polygon(points=curvedRightTriangle([0,base_height + floor_depth],[0,0],[leg,base_height + floor_depth], 10, 0.2)[1]);
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translate([0, -(base_width/2+leg+leg_offset+glass_recess+wall_width), -base_height/2 -floor_depth/2])
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rotate([90,0,90])
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linear_extrude(height = base_length+(leg+leg_offset+glass_recess+wall_width)*2, center = true) polygon(points=curvedRightTriangle([0,base_height + floor_depth],[leg,base_height + floor_depth],[0,0], 10, 0.2)[1]);
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translate([0, (base_width/2+leg_offset+glass_recess+wall_width), -base_height/2 -floor_depth/2])
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rotate([90,0,90])
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linear_extrude(height = base_length+(leg+leg_offset+glass_recess+wall_width)*2, center = true) polygon(points=curvedRightTriangle([leg,base_height + floor_depth],[leg,0],[0,base_height + floor_depth], 10, 0.2)[1]);
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}
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difference() {
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carve_cave();
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//triangle_braces();
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curved_braces();
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}
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// --- Vector helpers ---
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function v_add(a, b) = [a[0] + b[0], a[1] + b[1]];
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function v_sub(a, b) = [a[0] - b[0], a[1] - b[1]];
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function v_mul(v, s) = [v[0] * s, v[1] * s];
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// Linear interpolation
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function lerp(a, b, t) =
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[ a[0] + (b[0] - a[0]) * t,
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a[1] + (b[1] - a[1]) * t ];
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// Single curved point on hypotenuse
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function curved_point(A, O, H, t, scale) =
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let(
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P = lerp(O, H, t),
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curveFactor = -4 * t * (1 - t),
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toA = v_sub(A, P),
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offset = v_mul(toA, scale * curveFactor)
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)
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v_add(P, offset);
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// Main function
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function curvedRightTriangle(A, O, H, count=20, scale=0.3) =
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let(
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hypotenuse = concat(
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[O],
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[ for (i = [1 : count-1])
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let(t = i / count)
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curved_point(A, O, H, t, scale)
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],
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[H]
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),
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triangle = concat([A, O], hypotenuse, [A])
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)
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[hypotenuse, triangle];
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