By tecnika - 6/26/2018
Hello, is there a quick way to resize the two dimension of a cross separately with the arrow keys? e.g. making vertical line longer with top arrow key, shorter with low arrow key; horizontal line longer with right arrow key and shorter with left arrow key?
Thank you
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By Dave - 6/27/2018
+xHello, is there a quick way to resize the two dimension of a cross separately with the arrow keys? e.g. making vertical line longer with top arrow key, shorter with low arrow key; horizontal line longer with right arrow key and shorter with left arrow key? Thank you You would define two <shape> elements that make up your cross -- one horizontal line, one vertical line. You can then manipulate those lines' sizes separately based on the response. Something like this:
<block myblock> / trials = [1=sizetrial] </block>
<values> / h = 20px / v = 20px / stepsize = 5px </values>
203 = left 205 = right 200 = up 208 = down <trial sizetrial> / ontrialend = [ if (trial.sizetrial.response == 203 && values.h >= 0) values.h -= values.stepsize; if (trial.sizetrial.response == 205) values.h += values.stepsize; if (trial.sizetrial.response == 200 && values.v >= 0) values.v -= values.stepsize; if (trial.sizetrial.response == 208) values.v += values.stepsize; ] / stimulusframes = [1=clearscreen, h, v] / validresponse = (203, 205, 200, 208, 28) / branch = [ if (trial.sizetrial.response!=28) trial.sizetrial; ] </trial>
<shape h> / shape = rectangle / color = black / erase = false / position = (50%, 50%) / size = (values.h, 10px) </shape>
<shape v> / shape = rectangle / color = black / erase = false / position = (50%, 50%) / size = (10px, values.v) </shape>
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