Unrecognized function or variable 'x'

Question

paul_dak 2020-11-8

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/640090-unrecognized-function-or-variable-x

评论： per isakson 2020-11-9

classdef Rat <handle
    
    properties
        image = imread('rat_single.tif')       
        location    
        speed = 5      
        direction = 30
    end
    
    methods
        
        function obj = Rat(loc)
            if nargin == 1
                obj.location = loc;
            else 
                obj.location = [0,0];
            end
        end
        
 
        function im  = get_image(self)                         
            im = imrotate_w(self.image, self.direction);
            
        end
          
        function vectors = mouse_vec(self,im)
            global MAX_SPEED;
            multiply_factor = 7; 
            im_cntr = get_image_center(im);
            x_move = cos(self.direction);
            y_move = sin(self.direction);
            vect_move = [x_move,y_move] * (MAX_SPEED * multiply_factor);
            start_vect = im_cntr;
            vectors = [start_vect,vect_move];
            
        end
        
        function plot_rat(self)
            rotd_im = imrotate_w(self.image,self.direction);
            imshow(rotd_im);
            axis on
            hold on;
            vectors = mouse_vec(self,rotd_im);
            quiver(vectors(1),vectors(2),vectors(3),vectors(4)); 
        end 
     end
        
    methods (Static)
        function rot_im = imrotate_w(im, d)
            if((nargin ~= 2) || ndims(im) == 3)
            disp('Wrong number of parameters, or their contents. Exiting...');
            return;
            end
            max_val = max(im(:));  				
            rot_im = max_val - imrotate(max_val - im, d); 
            plot(rot_im);
        end
        
        function center = get_image_center(im)
            info = size(im);
            xR = info(1); 
            yR = info(2); 
            center_x = floor(xR/2);
            center_y = floor(yR/2);
            center = [center_x,center_y]; 
        end
    end
end