$fn=64;

// --- Parameters ---
bowl_diameter = 180;      // Diameter of the central cutout for the bowl
stand_height = 120;       // Total height of the stand
top_thickness = 15;       // Thickness of the top platform
lip_width = 30;           // Width of the top platform around the bowl
leg_top_dia = 25;         // Diameter of the legs at the top
leg_bot_dia = 18;         // Diameter of the legs at the bottom
splay = 30;               // Outward angle/distance of the legs for stability
crossbar_height = 40;     // Height of the support ring from the floor
crossbar_thickness = 12;  // Thickness of the support ring

// --- Calculated Variables ---
outer_size = bowl_diameter + (lip_width * 2);
corner_offset = (outer_size / 2) - (leg_top_dia / 2) - 5;

// Function to calculate leg center position at a given Z height
function leg_pos(z) = corner_offset + splay * (1 - (z / (stand_height - top_thickness)));

// --- Model ---
difference() {
    union() {
        // Top Platform (Rounded Square)
        translate([0, 0, stand_height - top_thickness])
            hull() {
                for (x = [-1, 1], y = [-1, 1]) {
                    translate([x * corner_offset, y * corner_offset, 0])
                        cylinder(h=top_thickness, d=leg_top_dia + 10);
                }
            }

        // Splayed Legs
        for (x = [-1, 1], y = [-1, 1]) {
            hull() {
                // Top of the leg
                translate([x * corner_offset, y * corner_offset, stand_height - top_thickness])
                    cylinder(h=top_thickness, d=leg_top_dia);
                // Bottom of the leg
                translate([x * leg_pos(0), y * leg_pos(0), 0])
                    cylinder(h=1, d=leg_bot_dia);
            }
        }

        // Crossbar Support Ring
        for (i = [-1, 1]) {
            // X-axis crossbars
            hull() {
                translate([i * leg_pos(crossbar_height), -leg_pos(crossbar_height), crossbar_height])
                    sphere(d=crossbar_thickness);
                translate([i * leg_pos(crossbar_height),  leg_pos(crossbar_height), crossbar_height])
                    sphere(d=crossbar_thickness);
            }
            // Y-axis crossbars
            hull() {
                translate([-leg_pos(crossbar_height), i * leg_pos(crossbar_height), crossbar_height])
                    sphere(d=crossbar_thickness);
                translate([ leg_pos(crossbar_height), i * leg_pos(crossbar_height), crossbar_height])
                    sphere(d=crossbar_thickness);
            }
        }
    }

    // Center cutout for the water bowl
    translate([0, 0, -1])
        cylinder(h=stand_height + 2, d=bowl_diameter);

    // Flatten the bottom (removes any artifacts below floor level)
    translate([0, 0, -50])
        cube([outer_size * 3, outer_size * 3, 100], center=true);
}