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Help with drawing a polygon correctly

Methos93Methos93 Posts: 2Member
Hey, everyone. I'm having trouble with a class I'm making called Turtle. I want it so that you can choose to draw a rectangle or a "regular shape". A "regular shape" is any shape that has every side as the same length (the number of sides is decided by the user). The rectangle method works just fine but I can't seem to get the angles right on the regular shape method so my shape always comes out wrong. Here is the code.




[code]import java.util.Scanner;
public class Turtle extends SimpleTurtle
{

public Turtle (int x, int y, Picture picture)
{

super(x,y,picture);
}


public Turtle (int x, int y, ModelDisplay modelDisplayer)
{

super(x,y,modelDisplayer);
}


public Turtle (ModelDisplay modelDisplay)
{

super(modelDisplay);
}

public Turtle (Picture p)
{

super(p);
}
public void drawRectangle(int rectwidth, int rectlength)
{
/*Scanner keyboard = new Scanner(System.in);
System.out.println("Enter the length.");
rectlength = keyboard.nextInt();
System.out.println("Enter the width.");
rectwidth = keyboard.nextInt();*/
int value1 = 2;
this.turnRight();
this.forward(rectwidth);
this.turnRight();
this.forward(rectlength);
this.turnRight();
this.forward(rectwidth);
this.turnRight();
this.forward(rectlength);

}
public void drawRegular(int numside, int lengthside)
{
int angle = (((numside - 2) * 180) / (numside));
this.turn(angle);
for (int i=0;i<numside;i++){


this.forward(lengthside);}
this.turn(angle);
}
public static void main(String[] args)
{
World world1=new World();
Turtle turtle1=new Turtle(world1);
Scanner keyboard = new Scanner(System.in);

int choice= 3;
System.out.println("Input '1' for a rectangular figure or '2' for a regular figure.");



for (int i=1;i<9999;i++) {
if (choice == 1)
{
int rectwidth=0;
int rectlength=0;

System.out.println("Enter the width of the rectangle:");
rectwidth = keyboard.nextInt();
System.out.println("Enter the length of the rectangle:");
rectlength = keyboard.nextInt();
if ((rectwidth < 1 || rectlength < 1))
{
System.out.println("Incorrect input. All values of width and length must be nonzero positive numbers.");
}
else{
turtle1.drawRectangle(rectwidth, rectlength);}
}
else if(choice == 2)
{
int numside=0;
int lengthside=0;
System.out.println("Input the number of sides");
numside = keyboard.nextInt();
System.out.println("Input the length of a side");
lengthside = keyboard.nextInt();
if ((numside < 1 || lengthside < 1))
{
System.out.println("Incorrect input. All values of sides and length must be nonzero positive numbers.");
}
else{
turtle1.drawRegular(numside, lengthside);}

}
else
{
System.out.println("Input '1' for a rectangular figure or '2' for a regular figure.");
choice = keyboard.nextInt();
}
}

}
}
[/code]

Help would be appreciated.
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