Class method not working properly

13 次查看（过去 30 天）
James
James 2011-9-23
Hello,
My method function "move(obj)" does nothing when it is called. The obj.pos is left unchanged. Can anyone tell me what I'm doing wrong? Here's the class code:
classdef ball
properties
pos
vel
rad
end
methods
function obj = ball(pos,vel,rad)
if nargin ~= 0
obj=ball;
obj.pos = pos;
obj.vel = vel;
obj.rad = rad;
end
end
function draw(obj) (...)
end
function move(obj)
obj.pos(1)=obj.pos(1)+obj.vel(1);
obj.pos(2)=obj.pos(2)+obj.vel(2);
end
end
end
Thanks!
-Jim

请先登录，再回答此问题。

采纳的回答

Daniel Shub
Daniel Shub 2011-9-23
Your class is a value class. If you want the new value of obj, then you need the move method to return obj. You may want your class to be a handle class
classdef ball < handle

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Class File Organization 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by