逐行解释一下以下的代码，processing

代码如下：
int tilesX = 16;
int tilesY = 8;

int tileW = int(width/tilesX);
int tileH = int(height/tilesY);

for (int y =0;y < tilesY; y++){
for(int x = 0;x < tilesX; x++){
int wave = int (sin(frameCount 0.05+(xy)0.07)100);
int sx=xtileW+wave;
int sy=ytileH;
int sw=tileW;
int sh= tileH;
int dx=xtileW;
int dy=y+tileH;
int dw=tileW;
int dh=tileH;

copy(pg,sx,sy,sw,sh,dx,dy,dw,dh);
}
}
}

这咋解释呢，先定义了格子大小和位置，然后双循环，计算wave值，应该是某个计算公式，然后一对的变量赋值，无法判定要干啥，变量名可读性比价差，最后复制了一下