problem, maybe too many variables?

[shaishai]

ere's the problem. a school assignment(extra credit) but something goes horribly wrong. i do use a DrawSquare class, which enables you to draw using move, forward, and other such commands.

public class makePolygon
{
	double sidelength;
	int mynumsides;
	double myangle = ((mynumsides - 2) * 180.0) / mynumsides;
	double r;
	double R;
	double perim = (mynumsides * sidelength);
	
	makePolygon(int mynumsides, double sidelength)
	{
	}
	
	double Angle(int mynumsides)
	{
		return myangle;
	}
	double getArea()
	{
		return ((1/2) * r * (mynumsides * sidelength));
	}
	double getSideLength(double sidelength)
	{
		return sidelength;
	}
	
	
	double getPerim(int mynumsides, double sidelength)
	{
		return (mynumsides * sidelength);
	}
	double calcNew(double sidelength)
	{
		return (Math.sqrt(4));
	}
	
}








import apcslib.*;
import chn.util.*;
public class polygonMain
{
	
	public static void main(String[] args)
	{
		double numlength;
		int numsides;
		double perim;
		double r;
		double R;
		double angle;
		int i;
		ConsoleIO console = new ConsoleIO();
		
		System.out.print("Number of sides: ");
		numsides = console.readInt();
		
		System.out.print("\nLength of a side: ");
		numlength = console.readDouble();
		makePolygon makeit = new makePolygon(numsides, numlength);
		System.out.print("\nYour perimeter is: ");
		perim = makeit.getPerim(numsides,numlength);
		System.out.println(perim);
		System.out.print("\nr = ");
		r = console.readDouble();
				
		int length = (int)numlength;
		angle = makeit.Angle(numsides);
		
		DrawingTool pen;
		SketchPad paper;
		
		paper = new SketchPad(length * 4, length * 4);
		pen = new DrawingTool(paper);
		
		
		pen.move(r);
		pen.down();
		pen.turnLeft((angle + 90));
		
		for ( i=1; i<numsides; i++ ) 
		{
			pen.move(numlength);
			pen.turnLeft(angle);
		}
	
	}	
}

the output should be a regular polygon, though what happens is it moves to the point specified, then it puts the pen down(this enables it to start drawing). but instead of drawing a polygon, it draws a diagonal line that's who knows how long!! can anyone see something wrong with my code?

[elrick33]

You never set the variables you declare.

int mynumsides*A*;
double myangle = ((mynumsides - 2) * 180.0) / mynumsides;

makePolygon(int mynumsides*B*, double sidelength)
{


}

leaves mynumSides 0, no matter what you do, because mynumsides*A* and *B* are not the same thing.

Do it like this instead:


makePolygon(int mynumsidesB, double sidelength)
{
mynumsides=mynumsidesB;
myangle = ((mynumsides - 2) * 180.0) / mynumsides;
}

[shaishai]

thanks man, though it didn't help...