Chris Hewitson asked 5 years ago
Koloman Varady Staff answered 5 years ago
Chris Hewitson
replied 5 years ago Thanks Koloman,
I have written the following function to modify the target VCODES:
function VCODES_OUT = Feedback_Ring(Ring_state, Cursor_X, Cursor_Y, VCODES_IN)
VCODES = VCODES_IN;
radii = hypot((Cursor_X -VCODES(3)), (Cursor_Y-VCODES(4))); %determine distance of cursor from start target center
if Ring_state == 1;
VCODES(10) = radii;
VCODES(5) = -2^31; % set to no-fill
% Set stroke value to ‘green’ by converting to uint32 format
full = (2^32 – 1);
VCODES(6) =(full*(2^64)) + full; % THIS DOES NOT WORK
else
VCODES(10) = VCODES(10);
end
VCODES_OUT = VCODES;
end
But I am unclear as to how I can change the stroke colour to green. Specifically how to format in uint32. Are you able to assist with this?
Koloman Varady Staff answered 5 years ago
Chris Hewitson
replied 5 years ago Great! Thanks
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Hello,
I would like to replace cursor feedback with a ring centred at a start target that changes radius as a function of cursor position (distance from the start target).
I have added ring_state to the main trial block in indicate when the ring should be switched on, and have created a hollow target for the ring. The ring’s location is provided by the parameters table (entered into the target block). I am not sure how to bypass the VISUAL_RADIUS value from the parameter table in order to change the radius of the ring dynamically.
Can I simply modify the VCODES that leave the target block with a function that replaces VCode(10) with the distance of cursor position and start target, or should I modify the target row inputs that enter the target block? Thanks in advance.
Chris