Posted by
Hao Jiang-3 on
Jun 18, 2008; 7:11pm
URL: http://imagej.273.s1.nabble.com/draw-multiple-ovals-with-color-tp3695837p3695838.html
I'm afraid yes, what can I do?
-----Original Message-----
From: Wayne Rasband [mailto:
[hidden email]]
Sent: Wednesday, June 18, 2008 1:00 PM
To: Hao Jiang
Subject: Re: draw multiple ovals with color
Hao,
Are you drawing the ovals on a color image? The ip.setColor() method
will not cause ovals to be in color on a grayscale image.
-wayne
On Jun 18, 2008, at 12:44 PM, Hao Jiang wrote:
> Hello all, I need some help here
>
> I'm trying to draw some ovals on image, based on a list, so the code
> just like this
>
> Vector Points, each element is an object contains position and color
>
> w=5;
> for(int i = 0; i < Points.size(); i++){
>
> Object o = Points.elementAt(i);
>
> x=o.getx();
>
> y=o.gety();
>
> color=o.getcolor();
>
> ip.drawOval(x-w/2, y-w/2, w,w);
>
> imp.updateAndDraw();
>
> }
>
>
>
> I can get all the ovals I want, but can't set color, use
> ip.setColor(color) was not working.
>
>
>
> On another hand, if I use
>
> OvalRoi oval = new OvalRoi((x-w/2, y-w/2, w,w, imp);
>
> oval.setColor(color);
>
> imp.setRoi(oval);
>
>
>
> I can get the color I wanted but found only one oval on the image.
>
>
>
> What's the correct way to draw multiple ovals with different color?
>
>
>
> Thanks
>
>
>
> Hao
>
>
>
>
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