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Index › Programming Questions & Help › Syntax Questions › 2 and 3 dimesional arrays
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2 and 3 dimesional arrays (Read 582 times)
tavern
2 and 3 dimesional arrays
Aug 24th, 2009, 3:50pm  
hi.. how do u append and access elements of a 2 or 3 dimensional array? is that the way to capture and store sets of mouse coordinates? Huh
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ben_hem
Re: 2 and 3 dimesional arrays
Reply #1 - Aug 24th, 2009, 5:45pm  
There are many ways; you could also use an Xarray and Yarray to store mouse locations, but if you want a 2D array to combine the two, you'd say:

locationArray[][] = new float[2][numberOfSavePoints];

then any saved point can be recalled as:

(locationArray[0][pointNumber], locationArray[1][pointNumber])

if I've misunderstood and you actually want to reference each pixel in a 2D array (as in pixelArray[width][height]), look into pixels[].  That's a 1-D array, so you reference it as (width*y+x).

If you want an array with flexible length, look into the Java classes Vector or LinkedList.  Otherwise all array contents are accessed by the element's index number/s in brackets.
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« Last Edit: Aug 24th, 2009, 11:47pm by ben_hem »  
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PhiLho 
Re: 2 and 3 dimesional arrays
Reply #2 - Aug 24th, 2009, 11:19pm  
You can use PVector to handle such coordinate sets.
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