$fn=64;

// --- Parameters ---
cable_diameter = 6.5;    // Diameter of the cable to hold
wall_thickness = 4.0;    // Thickness of the clip walls
clip_length = 20.0;      // Length/height of the clip extrusion
opening_width = 4.0;     // Width of the insertion slit (slightly smaller than cable to snap in)
corner_radius = 3.0;     // Radius for the rounded outer corner
corner_relief = 1.5;     // Inner corner cutout to ensure flush fit against imperfect walls

// --- Calculated Variables ---
size = cable_diameter + wall_thickness * 2;
center_offset = size / 2;

module corner_cable_clip() {
    linear_extrude(height = clip_length) {
        difference() {
            // Main body: L-shape with a rounded outer corner
            hull() {
                square([1, size]);
                square([size, 1]);
                translate([size - corner_radius, size - corner_radius]) 
                    circle(r = corner_radius);
            }

            // Inner corner relief for flush mounting
            circle(r = corner_relief);

            // Cable cutout
            translate([center_offset, center_offset]) 
                circle(d = cable_diameter);

            // Slit for cable insertion
            translate([center_offset, center_offset])
                rotate(45)
                translate([0, -opening_width / 2])
                square([size, opening_width]);

            // V-chamfer to guide the cable into the slit
            translate([size - corner_radius, size - corner_radius])
                rotate(45)
                polygon([
                    [0, opening_width / 2],
                    [0, -opening_width / 2],
                    [corner_radius * 2, -opening_width * 1.5],
                    [corner_radius * 2, opening_width * 1.5]
                ]);
        }
    }
}

// Generate the 3D printable model
corner_cable_clip();