v5stable
Ondřej Hruška 11 years ago
parent 5be05077b7
commit 2fbebd4fbc
  1. 17
      src/mightypork/utils/math/constraints/rect/Rect.java
  2. 18
      src/mightypork/utils/math/constraints/rect/RectProxy.java
  3. 112
      src/mightypork/utils/math/constraints/rect/TiledRect.java

@ -758,4 +758,21 @@ public abstract class Rect implements RectBound {
return centerTo(parent.center());
}
public TiledRect tiles(int horizontal, int vertical)
{
return new TiledRect(this, horizontal, vertical);
}
public TiledRect columns(int columns)
{
return new TiledRect(this, columns, 1);
}
public TiledRect rows(int rows)
{
return new TiledRect(this, 1, rows);
}
}

@ -0,0 +1,18 @@
package mightypork.utils.math.constraints.rect;
public class RectProxy extends RectAdapter {
private Rect source;
public RectProxy(Rect source) {
this.source = source;
}
@Override
protected Rect getSource()
{
return source;
}
}

@ -0,0 +1,112 @@
package mightypork.utils.math.constraints.rect;
import mightypork.utils.math.constraints.num.Num;
/**
* Utility for cutting rect into evenly sized cells.
*
* @author MightyPork
*/
public class TiledRect extends RectProxy {
final private int tilesY;
final private int tilesX;
final private Num perRow;
final private Num perCol;
TiledRect(Rect source, int horizontal, int vertical) {
super(source);
this.tilesX = horizontal;
this.tilesY = vertical;
this.perRow = height().div(vertical);
this.perCol = width().div(horizontal);
}
/**
* Get a tile. Tiles count from 0 to n-1
*
* @param x x position (zero based)
* @param y y position (zero based)
* @return tile
* @throws IndexOutOfBoundsException when invalid index is specified.
*/
public Rect tile(int x, int y)
{
if (x >= tilesX || x < 0) {
throw new IndexOutOfBoundsException("X coordinate out fo range.");
}
if (y >= tilesY || y < 0) {
throw new IndexOutOfBoundsException("Y coordinate out of range.");
}
final Num leftMove = left().add(perCol.mul(x));
final Num topMove = top().add(perRow.mul(y));
return Rect.make(perCol,perRow).move(leftMove, topMove);
}
/**
* Get a span (tile spanning across multiple cells)
*
* @param x_from x start position
* @param x_to x end position (included)
* @param y_from y start position
* @param y_to y end position (included)
* @return tile the tile
* @throws IndexOutOfBoundsException when invalid index is specified.
*/
public Rect span(int x_from, int x_to, int y_from, int y_to)
{
if (x_from >= tilesX || x_from < 0 || x_to >= tilesX || x_to < 0) {
throw new IndexOutOfBoundsException("X coordinate(s) out of range.");
}
if (y_from >= tilesY || y_from < 0 || y_to >= tilesY || y_to < 0) {
throw new IndexOutOfBoundsException("Y coordinate(s) out of range.");
}
if (x_from > x_to) {
throw new IndexOutOfBoundsException("x_from > x_to");
}
if (y_from > y_to) {
throw new IndexOutOfBoundsException("y_from > y_to");
}
final Num leftMove = left().add(perCol.mul(x_from));
final Num topMove = top().add(perRow.mul(y_from));
return Rect.make(perCol.mul(x_to - x_from + 1), perRow.mul(x_to - x_from + 1)).move(leftMove, topMove);
}
/**
* Get n-th column (tile n,1)
*
* @param n column index (zero based)
* @return the column tile
* @throws IndexOutOfBoundsException when invalid index is specified.
*/
public Rect column(int n)
{
return tile(n, 1);
}
/**
* Get n-th row (tile 1,n)
*
* @param n row index (zero based)
* @return the row rect
* @throws IndexOutOfBoundsException when invalid index is specified.
*/
public Rect row(int n)
{
return tile(1, n);
}
}
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