// DrawRivers Example
// Source code file: MyView.java
// Draw the rivers in the onDraw
// method of this class.

package it372.smiths.drawrivers;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.View;
import java.io.InputStream;
import java.util.Scanner;

public class MyView extends View {
    private InputStream is;
    private Scanner s;

    public MyView(Context context) {
        super(context);
        is =  getResources( ).openRawResource(R.raw.rivers);
        s  = new Scanner(is);
    }

    @Override
    public void onDraw(Canvas canvas) {
        float prevx = 0.0f;
        float prevy = 0.0f;
        Paint paint = new Paint( );
        paint.setColor(Color.BLUE);
        paint.setStrokeWidth(3.0f);
        s.nextLine( );

        while(s.hasNextLine( )) {
            String line = s.nextLine( );
            String[ ] fields = line.split(",");
            float x = 30.0f * Float.parseFloat(fields[0]);
            float y = 30.0f * Float.parseFloat(fields[1]);
            int startPoint = Integer.parseInt(fields[2]);
            if (startPoint == 0) {
                canvas.drawLine(prevx, prevy, x, y, paint);
            }
            prevx = x;
            prevy = y;
        }
        s.close( );
    }
}