I got found the maths package, but I can't find out how to use them. Help?
nooby123 wrote ...
2012/3/4
Sin, cos, and tan?
You do not have to 'import' anything, just prefix the functions with 'Math.' (that 'Math', followed by a dot, followed by the function with its parameters).
Thanks, but it's still not working. The code is:
The line isn't drawing.
static double x, y;
GreenfootImage line=new GreenfootImage(600,600);
public void act() {
y=Math.sin(x);
line.setColor(Color.RED);
line.drawLine((int)x,(int)y,(int)x,(int)y);
setImage(line);
}
I have places to go, and people to meet. I will be back later.
But for now, try putting a value in for x in line 5 and see what happens.
If you still do not get line drawing, try changing the length of the line on line 7and see if that helps.
Gotta go. Check ya on the flipside.
y = Math.sin((double) 0.5);
line.drawLine((int)x, (int)y, (int)(x + 1), (int)y);
The problem is (as danpost kind of said) that the line you're attempting to draw is of 0 length (x -> x, y -> y) so it won't draw.
If its that you're wanting to do, click here.
(^Shameless self promotion)
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