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Diffstat (limited to 'lib/gs/examples/ball.erl')
-rw-r--r-- | lib/gs/examples/ball.erl | 78 |
1 files changed, 0 insertions, 78 deletions
diff --git a/lib/gs/examples/ball.erl b/lib/gs/examples/ball.erl deleted file mode 100644 index c5d1e10db5..0000000000 --- a/lib/gs/examples/ball.erl +++ /dev/null @@ -1,78 +0,0 @@ -%% -%% %CopyrightBegin% -%% -%% Copyright Ericsson AB 1996-2016. All Rights Reserved. -%% -%% Licensed under the Apache License, Version 2.0 (the "License"); -%% you may not use this file except in compliance with the License. -%% You may obtain a copy of the License at -%% -%% http://www.apache.org/licenses/LICENSE-2.0 -%% -%% Unless required by applicable law or agreed to in writing, software -%% distributed under the License is distributed on an "AS IS" BASIS, -%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -%% See the License for the specific language governing permissions and -%% limitations under the License. -%% -%% %CopyrightEnd% -%% - -%% -%% ------------------------------------------------------------ -%% A simple demo showing a ball -%% bouncing in a window. -%% ------------------------------------------------------------ - --module(ball). --compile([{nowarn_deprecated_function,{gs,button,2}}, - {nowarn_deprecated_function,{gs,canvas,2}}, - {nowarn_deprecated_function,{gs,config,2}}, - {nowarn_deprecated_function,{gs,oval,2}}, - {nowarn_deprecated_function,{gs,start,0}}, - {nowarn_deprecated_function,{gs,window,2}}]). - --export([start/0,init/0]). - -start() -> - spawn(ball,init,[]). - -init() -> - I= gs:start(), - W= gs:window(I,[{title,"Ball"},{width,300},{height,300},{map,true}]), - C= gs:canvas(W,[{width,300},{height,300},{bg,yellow}]), - gs:button(W,[{label, {text,"Quit Demo"}},{x,100}]), - Ball = gs:oval(C,[{coords,[{0,0},{50,50}]},{fill,red}]), - ball(Ball,0,0,5.5,4.1). - -ball(Ball,X,Y,DX,DY) -> - {NX,NDX} = cc(X,DX), - {NY,NDY} = cc(Y,DY), - gs:config(Ball,{move,{DX,DY}}), - receive - {gs,_,click,_,_} -> exit(normal); - {gs,_,destroy,_,_} -> exit(normal) - after 20 -> - true - end, - ball(Ball,NX,NY,NDX,NDY). - -cc(X,DX) -> - if - DX>0 -> - if - X=<250 -> - {X+DX,DX}; - x>250 -> - {X-DX,-DX} - end; - DX<0 -> - if - X>=0 -> - {X+DX,DX}; - X<0 -> - {X-DX,-DX} - end - end. - -%% ------------------------------------------------------------ |