include <Round-Anything-master/polyround.scad>

module rounded_rectangle(width, length, height, radius1, radius2) {
    polyRoundExtrude([
            [-width/2, -length/2, 1],   // Bottom-left point
            [-width/2, length/2, 1],    // Top-left point
            [width/2, length/2, 1],     // Top-right point
            [width/2, -length/2, 1]     // Bottom-right point
        ], height, radius1, radius2);
}

/*
radiiPoints=[
    [0, 0, 0.5],
    [0, 5, 0.5],
    [5, 0, 0.5],
    [2, 0, 0.5],
    [2, -3, 1],
    [4, -3, 0],
    [4, -5, 0],
    [-2, -5, 0],
    [-2, -3, 0],
    [0, -3, 1]];
extrudeWithRadius(3,1,1,50)
polygon(polyRound(radiiPoints,30));
*/

// Usage examples
rounded_rectangle(10, 10, 4, -2, -2);  

//extrudeWithRadius(5,-2,-2,50)square([5, 2]);