User interactive animation in matlab -


i trying make user interactive animation in matlab. square translates , rotates across screen , user has click on it. if click on it, receive points , animation repeat. if click on whitespace (eg. anywhere except within square) animation exit , lose displayed. have animation finished using 2 functions. 1 create animation , registers mouse click. far can recognize mouse click , animation stop if user clicks on whitespace animation not repeat if user clicks within polygon. unsure how modify code animation repeat until user clicks white space. have pasted code below. appreciated.

animation function:

function movingpolygon global guserhitpolygon; global gcurrentxvertices; global gcurrentyvertices; guserhitpolygon = true; nsides =4; %polar points r=1; theta = pi/nsides * (1:2:2*nsides-1);  %cartesisn points x0 = r * cos(theta); y0 = r * sin(theta); nframes = 100; xx = linspace(0,10, nframes); yy = xx;  rr = linspace(0, 2*pi, nframes); h = figure; set(h,'windowbuttondownfcn',   @mousedowncallback);  = 1:nframes      rx = [cos(rr(i)), -sin(rr(i))];     ry = [sin(rr(i)), cos(rr(i))];      x1 = rx * [x0; y0];     y1 = ry * [x0; y0];      x2= x1 + xx(i);     y2= y1 + yy(i);     gcurrentxvertices=x2;     gcurrentyvertices=y2;     y=fill(x2, y2, 'b');      xlim([0,10]); ylim([0,10]);     hold on;     pause(0.000000003);     if ~guserhitpolygon         clear global guserhitpolygon gcurrentxvertices gcurrentyvertices;         break;     end     delete(y);  end end

callback function:

function mousedowncallback(~,~)  global userhitpolygon; global currentxvertices; global currentyvertices;   xvertices = gcurrentxvertices; yvertices = gcurrentyvertices;  % if have valid (so non-empty) sets of x- , y-vertices then... if ~isempty(xvertices) && ~isempty(yvertices)      % coordinate on current axis     coordinates = get(gca,'currentpoint');     coordinates = coordinates(1,1:2);      % if coordinate not in polygon, change     % flag     if ~inpolygon(coordinates(1),coordinates(2),xvertices,yvertices)        guserhitpolygon = false;     end end end

edit: fixed bugs in callback function.

short answer

include animation in while loop

long answer

no matter user does, animation play once, because doesn't know repeat. answer use while loop, repeat animation until tell stop. main loop becomes

done = false; % stopping condition while ~done     = 1:nframes          rx = [cos(rr(i)), -sin(rr(i))];         ry = [sin(rr(i)), cos(rr(i))];          x1 = rx * [x0; y0];         y1 = ry * [x0; y0];          x2= x1 + xx(i);         y2= y1 + yy(i);         gcurrentxvertices=x2;         gcurrentyvertices=y2;         y=fill(x2, y2, 'b');          xlim([0,10]); ylim([0,10]);         hold on;         pause(0.000000003);         if ~guserhitpolygon             clear global guserhitpolygon gcurrentxvertices gcurrentyvertices;             done = true; % set stopping condition             break;         end         delete(y);      end end

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