我有一个地形设置（全其它小图像的图像）。我想获得那些所谓的砖，所以我可以用它做什么小图像之一。我知道每瓦（他们都是一样大小）的大小。 我有两个等式：

  X =（I％tiles_hor）* tile_h
Y =（I％tiles_ver）* tile_w

X =（ⅰ％tiles_hor）* tile_w
Y =（I / tiles_hor）* tile_w
 

其中的我指的瓷砖我想要得到的指数; tiles_hor 是瓦水平的数量; tiles_ver 瓷砖是垂直的数量; tile_w 和 tile_h 的宽度和每瓦的地形设置，分别为内部高度;

瓷砖依次接收它们的索引，这样的：

  01 02 03 04 05
06 07 08 09 10
11 12 13 14 15
16 17 18 19 20
21 22 23 24 25
 

所以每对位的它是地形设置内部的瓦片的索引。 比方说，我想要得到的04瓦（假设瓷砖各有一个32×32大小）： 与第一方程：

X =（4％5）* 32 = 128。所以这是x位置内的图像是128 Y =（4％5）* 32 = 0，所以这是y中的图像内是0;

与第二式： X =（4％5）* 32 = 128。所以这是x位置内的图像是128 Y =（4/5）* 32 = 0这里的是0，因为我们是第一圆第一八佰伴pression为最接近的次设备号（我不知道是不是我的前pression是正确的。请纠正我，如果它不是）。

请注意，我们正在考虑一个完美的正方形地形设置（在这种情况下，5×5）

我的问题是： 第二种适用于大多数情况下。第一站时，有没有完美的正方形地形设置的，并具有很高的高空作业。 所以我在做什么错呢？

另外，如何可以是让出一个非常重要的价值（tiles_ver和tile_h）可能是正确的一个公式？我在想什么呢？

  X =（（I  -  1）％tiles_hor）* tile_w
Y =（（I  -  1）/ tiles_hor）* tile_h
 

I have a tileset(a image full of other small images). And I wanna get one of those little images called tile so I can do something with it. I know the size of each tile(they're all the same size). I have two equations:

x = (i % tiles_hor) * tile_h
y = (i % tiles_ver) * tile_w

x = (i % tiles_hor) * tile_w
y =  (i / tiles_hor) * tile_w

where i means the index of the tile i wanna get; tiles_hor is the number of tiles horizontally; tiles_ver is the number of tiles vertically; tile_w and tile_h is the width and height of each tile inside the tileset, respectively;

The tiles receive their index sequentially, like this:

01 02 03 04 05 
06 07 08 09 10
11 12 13 14 15
16 17 18 19 20
21 22 23 24 25

So each pair of digit it's the index of a tile inside the tileset. Let's say I wanna get the tile 04(assuming the tiles have a 32x32 size each): with the first equation:

x = (4 % 5) * 32 = 128. So it's x position inside the image is 128 y = (4 % 5) * 32 = 0. So it's y inside the image is 0;

with the second equation: x = (4 % 5) * 32 = 128. So it's x position inside the image is 128 y = (4 / 5) * 32 = 0. Here's is 0, cause we're first rounding the first expression for the closest minor number(i don't know if my expression is right. Please correct me if it's not).

Note that we're considering a perfect square tileset (in this case 5x5)

My question is: The second works for most cases. The first stop working when there's no perfect squares tileset's and with a high height. So what am I doing wrong there?

Also, how can be a equation that is letting out a really important value (tiles_ver and tile_h) can be right? What am I missing there?

x = ((i - 1) % tiles_hor) * tile_w
y = ((i - 1) / tiles_hor) * tile_h