Tile Planner

Android application (Java) for planning the arrangement of floor tiles

in a room — how many tiles are needed, what is the error/reserve and approximate

price, plus floor visualization.

## What does the app do?

- **Entering dimensions**: width/length of the room (in meters), dimensions of

the tile (in centimeters) and the width of the joint (in millimeters).

- **Stacking model**: straight grid, brick (offset 50%) or

diagonal (45°) — each model adds a typical additional loss of

tiles due to cutting along the edges.

- **Reserve and price**: technological reserve in percentage (default 10%),

optionally price per tile and number of tiles in a box to calculate the required

boxes and total price.

- **Visualization**: `FloorView` (custom View) draws a scaled diagram of

the floor with the corresponding arrangement pattern.

- **History**: calculations can be saved in a local SQLite database

 (`DatabaseHelper`) and view/delete them from a separate screen.

## Calculation formula in brief

1. Number of tiles by width/length = rounded up (room size /

(tile size + joint)).

2. Tiles needed (net) = columns × rows.

3. Total reserve = user-entered reserve + model allowance

(0% for grid, 5% for brick, 15% for diagonal).

4. Tiles to order = rounded up (net tiles × (1 + reserve / 100)).

5. Boxes = rounded up (tiles per order / tiles per box), if

set.

6. Price = tiles to order × price per tile, if set.