$fn=64;

// --- Parameters ---
// Inner diameter of the clip for the stake/trellis wire
stake_diameter = 8;
// Inner diameter of the loop for the plant stem
plant_diameter = 15;
// Thickness of the walls
wall_thickness = 2.5;
// Height (Z-axis) of the clip
clip_height = 5;
// Opening width to snap onto the stake
stake_opening = 5.5;
// Opening width to insert the plant stem
plant_opening = 3;

// --- Calculated Variables ---
r_stake = stake_diameter / 2;
r_plant = plant_diameter / 2;
w = wall_thickness;
// Distance between centers to maintain consistent wall thickness between loops
center_dist = r_stake + r_plant + w;

// --- Geometry ---
difference() {
    // Main body (Figure-8 shape)
    union() {
        cylinder(r=r_stake + w, h=clip_height);
        translate([center_dist, 0, 0])
            cylinder(r=r_plant + w, h=clip_height);
    }

    // Stake hole
    translate([0, 0, -1])
        cylinder(r=r_stake, h=clip_height + 2);

    // Plant hole
    translate([center_dist, 0, -1])
        cylinder(r=r_plant, h=clip_height + 2);

    // Stake snap opening (facing -X direction)
    translate([-(r_stake + w + 1), -stake_opening/2, -1])
        cube([r_stake + w + 1, stake_opening, clip_height + 2]);

    // Plant insertion opening (facing +X direction)
    translate([center_dist + r_plant - 1, -plant_opening/2, -1])
        cube([r_plant + w + 2, plant_opening, clip_height + 2]);
}