// File: panels.scad
// Library: PLA+ / CementALL Mesh Panels
// Author: ChatGPT
// Uses only cube() primitives for printed "lines".
//
// Panel envelope: 5" x 11" (127.0 x 279.4 mm)
// Line width (bead): ~0.48 mm with 0.4 mm nozzle
// Layer height: 0.28 mm
//
// Variants:
// - Light:  pitch 10 mm, 2×2 layers,   T ≈ 1.12 mm
// - Medium: pitch  7 mm, 3×3 layers,   T ≈ 1.68 mm
// - Heavy:  pitch  5 mm, 4×4 layers,   T ≈ 2.24 mm
//

// --------------- Global ---------------------
nozzle_w = 0.4;                      // nozzle width
bead_w = (2 * nozzle_w) +0.2;        // line width + some extra(mm)
layer_h = 0.2;                      // layer height (mm)
X = 125.0;                           // panel width (X-span for Y-lines) (127.0 original)
Y = 280.0;                           // panel length (Y-span for X-lines) (279.4 original)
bead_gap = 5.0;                      // spacing between beads, center-2-center (mm)
noVoid = 0.004;                      // ensures that objects mesh
cutoff = 10.0; // extend on each end so a faulty start does not ruin the entire line. It will be trimmed in post process.
nX = 26;                            // The number of lines in the Y
nY = 57;
DEBUG = 0;

objectX = X+(bead_w*1);
objectY = Y+(bead_w*1);


layerX(zVAL=0); // the first layer, created (zVAL * 0.5) below the Z origin.
layerY(zVAL=(layer_h*1)); // the second layer
layerX(zVAL=(layer_h*2)); // the third
layerY(zVAL=(layer_h*3)); // the third






module layerX(zVAL) {

if(DEBUG) { translate ([0, 0, 0]) #cube([objectX, Y+cutoff, layer_h], center=true); }

    translate([-((objectX*0.5)-(bead_w*0.5)), 0, 0]) subA();
    module subA() {
        for (lx = [0 : nX-1]) {
            if(zVAL) {
            translate([lx*5, 0, zVAL]) cube([bead_w, Y, layer_h], center=true);
            } else {
            translate([lx*5, 0, 0]) cube([bead_w, Y+cutoff, 0.2], center=true); 
            }
        }
    }
}

module layerY(zVAL) {

    translate([0, -((objectY*0.5)-(bead_w*0.5)), 0]) subA();
    module subA() {
        for (ly = [0 : nY-1]) {
        translate([0, ly*5, zVAL]) cube([X, bead_w, layer_h], center=true);
        }
    }
    
}