Print an ASCII-Art-cube for a given height

index.js

function printCube(height) {
  const width = height * 2;
  const depth = Math.ceil(height / 2);

  const canvas = [];
  const canvasWidth = width + 2 + depth + 1;
  const canvasHeight = height + 2 + depth + 1;

  for (let i = 0; i < canvasHeight; i++) {
    canvas[i] = Array(canvasWidth).fill(" ");
  }

  canvas[canvasHeight - 1][1 + width] =
    canvas[canvasHeight - 2 - height][1 + width] =
    canvas[canvasHeight - 1][0] =
    canvas[canvasHeight - 2 - height][0] =
    canvas[0][canvasWidth - width - 2] =
    canvas[0][canvasWidth - 1] =
    canvas[height + 1][canvasWidth - 1] =
      "+";

  for (let i = 0; i < width; i++) {
    canvas[canvasHeight - height - 2][1 + i] =
      canvas[canvasHeight - 1][1 + i] =
      canvas[0][canvasWidth - 2 - i] =
        "-";
  }

  for (let i = 0; i < height; i++) {
    canvas[canvasHeight - height - 1 + i][0] =
      canvas[canvasHeight - height - 1 + i][width + 1] =
      canvas[i + 1][canvasWidth - 1] =
        "|";
  }

  for (let i = 0; i < depth; i++) {
    canvas[1 + i][canvasWidth - width - 3 - i] =
      canvas[1 + i][canvasWidth - 2 - i] =
      canvas[canvasHeight - 2 - i][canvasWidth - depth - 1 + i] =
        "/";
  }

  console.log("");
  for (const row of canvas) {
    console.log(`  ${row.join("")}  `);
  }
  console.log("");
}

printCube(5);

output

      +----------+  
     /          /|  
    /          / |  
   /          /  |  
  +----------+   |  
  |          |   |  
  |          |   +  
  |          |  /   
  |          | /    
  |          |/     
  +----------+