PLEASE HELP ME ... need to tile polygon

Thread view:

cheryl j - 25 Aug 2005 00:36 GMT

Hi, im desperately trying to tile polygon shape across the whole of the
canvas but all i seem to end up with is just one line, i need to loop it so
it draw polygon across whole canvas!!!!!

if(tiled)
{
for( int y=1; y<xPoints.length; y++)

        {
        for(int x=0; x<10;x++)

g.setColor(new Color(250,0,0));
            g.fillPolygon(xPoints, yPoints, xPoints.length);
                    for(int i=0; i<xPoints.length;i++)
                    xPoints[i] +=200;

    }

}

Reply to this Message

Andrew Thompson - 25 Aug 2005 07:28 GMT

> PLEASE HELP ME ... need to tile polygon

Please don't SHOUT. It will not get answers sooner, and is
more likely to get your post ignored than answered.

Also, I would recommend against putting 'please help me'
in a post at all. If people will help, they will help,
it makes little or no difference if you say 'please'.

> Hi, im desperately trying to tile polygon shape across the whole of the
> canvas but all i seem to end up with is just one line, i need to loop it so
> it draw polygon across whole canvas!!!!!

I cannot see what is wrong from your snippet, (though
if xPoints.length = 1, that might explain it) I suggest
you poast an SSCCE.
<http://www.physci.org/codes/sscce.jsp>

Since you are apparently new to this, I will also add..
<http://www.physci.org/codes/javafaq.jsp#usenet>

Signature

Andrew Thompson
physci.org 1point1c.org javasaver.com lensescapes.com athompson.info
"Give me a whiskey, don't think twice.."
The Angels 'Marseille'

Reply to this Message

Matt Humphrey - 25 Aug 2005 16:16 GMT

> Hi, im desperately trying to tile polygon shape across the whole of the
> canvas but all i seem to end up with is just one line, i need to loop it
[quoted text clipped - 16 lines]
>
> }

You need to think about what needs to happen to the polygon points in order
to make them appear tiled in a grid. You are incrementing the X, but not
the Y, so the polygon stays on one line. When the X-loop ends, you need to
increment the Y values, but also to reset the X values back (relatively) to
zero or you'll end up with a diagonal.

It's also not clear to me why your outer loop (y-loop) is over the number of
points in the polygon or why it starts at 1. I would have expected
something like for (int y = 0; y < numRows; ++y) where numRows is the
number of rows to be tiled, just as you use 10 for the number of columns (0
through 9) to be tiled.

Cheers,
Matt Humphrey matth@ivizNOSPAM.com http://www.iviz.com/

Reply to this Message

Tor Iver Wilhelmsen - 29 Aug 2005 15:22 GMT

> Hi, im desperately trying to tile polygon shape across the whole of the
> canvas but all i seem to end up with is just one line, i need to loop it so
> it draw polygon across whole canvas!!!!!

If you can use Java2D, look into transforming the coordinate system
instead of adjusting the polygon values: They should be constant
relative to some point shich you move around.

Reply to this Message

PLEASE HELP ME ... need to tile polygon

Free Magazines