************For matlab************** This is the turtle class classdef Turtle %T

Question

************For matlab**************

This is the turtle class

classdef Turtle
%TURTLE Turtle with a pen
% Turtle with a pen
  
   properties
% location of turtle
x
y
% 0 is E, 90 is N, 180 is W, 270 is S
heading
% pen status
pen_on_paper
end

  
   methods
function obj = Turtle()
% make a new Turtle
obj.x = 0;
obj.y = 0;
obj.heading = 90;
obj.pen_on_paper = true;
end
   function obj = forward(obj,distance)
% move forward in current heading given distancd
x2 = obj.x + distance*cosd(obj.heading);
y2 = obj.y + distance*sind(obj.heading);
if obj.pen_on_paper
% draw a line
hold on
l = line([obj.x x2],[obj.y y2]);
l.Color = 'black';
l.LineWidth = 1;
hold off
pause(0.1) % can you guess what this does?
end
% update location
obj.x = x2;
obj.y = y2;
end
function obj = rotate(obj,angle)
% rotate CCW by given angle
obj.heading = mod(obj.heading + angle,360);
end
  
function obj = penUp(obj)
obj.pen_on_paper = false;
end
function obj = penDown(obj)
obj.pen_on_paper = true;
end
end
end

2. Modify your Turtle class to allow the user to change the pen color and pen width. The initial color is 'black', and the initial width is 1. Test your code by drawing rainbow concentric boxes. You will need to add two properties to the Turtle class: pen width the width of the pen pen color the color of the pen You will need to add two methods to the Turtle class: obj penColor(obj,new color) changes the pen color obj penWidth (obj, new width) changes the pen width You will need to change the code of the forward(obj,distance) method to use the stored values of pen width and pen color properties instead of the hardcoded values.

Explanation / Answer

According to the question, modify your Turtle class to allow the user to change the pen color and pen width. The initial color is ‘black’, and the initial width is 1. Test your code by drawing rainbow concentric boxes.

As per assignment says: I will need to add two methods to the Turtle class: obj = penColor(obj,new_color) – changes the pen color obj = penWidth(obj,new_width) – changes the pen width, so using this function I have added both the object.

classdef Turtle

    properties

        % location of turtle

        x

        y

        % 0 is E, 90 is N, 180 is W, 270 is S

        heading

        % pen status

        pen_on_paper

        % width of pen

        pen_width

        % color of pen

        pen_color

    end

    methods

        function obj = Turtle()    %constructor

            % make a new turtle

            obj.x = 0;

            obj.y = 0;

            obj.heading = 90;

            obj.pen_on_paper = true;

            obj.pen_width = [];

            obj.pen_color = [];

        end

        function obj = forward(obj,distance)

            % move forward in current heading given distance

            x2 = obj.x + distance*cosd(obj.heading);

            y2 = obj.y + distance*sind(obj.heading);

            if obj.pen_on_paper

                % draw a line

                hold on

                l = line([obj.x x2],[obj.y y2]);

                l.Color = penColor;

               l.penColor([1,0,0])

                l.LineWidth = penWidth;

                l.LineWidth = 1;

                hold off

                pause (0.1)

            end

            % update location

            obj.x = x2;

            obj.y = y2;

        end

        function obj = penWidth(obj, new _width)

            new_width = [1,2,3,4];

            obj.pen_width = rand(new_width);

        end

        function obj = penColor(obj,new_color)

            new_color = ['yellow','red','blue','green','black','orange','purple'];

            obj.pen_color = rand(new_color);

        end

end

end

As per the question I have added below drawing rainbow concentric boxes.

Here I have added the code as per the assignments, if any doubt related to the code I am happy to give your answer ,please let me know for any doubt, my mail id pratap_mishra@outlook.com.

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