[英]How to get the 2d coordinates(x,y) from an ordered 1d list - 0,1,2,3,4,5,6… with given width & height?
圖像的索引存儲在一維列表中,其中包含0,1,2,3,4,5 ....(w*h)
而不是(0,0), (0,1),(0,2)...(w,h)
(給定圖像的高度和寬度),如何從索引中獲取索引(x,y),例如:57?
此代碼僅適用於平方尺寸
//width & height given
//p is the index, for eg = 57, from the ordered list - 0,1,2...57...w*h
int remainder = p %height;
int quotient = p/height;
int x = quotient;
int y = remainder;
bufferedImage.setRGB(y,x,myWhite.getRGB());
您的嘗試非常接近!
而不是除以矩陣的高度,而是除以width ,因為隨着您從圖像的左到右,然后從上到下,而不是從上到下,再到左,一維數組的索引增加在右邊。
int remainder = p %width;
int quotient = p/width;
int x = quotient;
int y = remainder;
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