drawRect( double,double,double,double)

[darine]

Hi all<br>I'm trying to draw rectangles or any objects with passing parameters other than integeres to drawRect() or to object.setBounds() methods.The problem is i can't found a similar methods to accept floats or doubles .<br>i tried to use parse methods and convert my flots or doubles to integers and round() to round those nubers to the nearst int values,but when look into the graphs i see the same level<br>for all values that have decimal points between 0.5 to 0.9 and the same as 0.1 to 0.5.<br>I hope someone will help me with this.<br>thanks alot.

 

[carpeliam]

As you can see in the Javadoc at <A HREF="

http://java.sun.com/products/jdk/1.2/docs/api/index.html"

TARGET="_new">

http://java.sun.com/products/jdk/1.2/docs/api/index.html</A>

for Graphics.drawRect(), the parameters are of type int. The only thing I can suggest is to scale- if you have one rectangle at 3.5 and another at 4, make the first one 7 and the second one 8. I think things are hopeless beyond that... if you can tell me why exactly you need to draw rectangles with doubles and floats, I might be able to come up with a different solution. If you are doing graphs as you say, you might be able to use the JChart Swing stuff.<br><br>Good luck.. <p>Liam Morley<br><a href=mailto:lmorley@wpi.edu>lmorley@wpi.edu</a><br><a href=

http://www.wpi.edu/~lmorley/>

] :: imotic :: website :: [</a><br>"light the deep, and bring silence to the world.<br>
light the world, and bring depth to the silence.

 

[fenris]

It doesn't make any sense for the drawRect method to accept doubles or floats. Think about it this way, the integers are used to specify pixels. A pixel on a display can not be a fraction, ie float or double, it just doesn't make sense to allow the input of half a pixel when a you can physical lite up half a pixel. <br><br>As Liam said in the above, you would need some sort of scalling method. I have not yet attempted to display information graphically yet, So I can't give you much more then some advice. <br><br>Try <A HREF="

http://www.jars.com"

TARGET="_new">

http://www.jars.com</A>

and look under the 2d graphics section, there you may be able to download source code to what you are looking for.<br><br> <p> fenris<br><a href=mailto:fenris@hotmail.com>fenris@hotmail.com</a><br><a href= > </a><br>

 

[darine]

Thanks for your time.<br>what i'm trying to do is ,use a setBounds() to control displaying a Panels or Canvas as bars in Chart of bars.<br>the problem is that method accepts integers and i want ot control the height of those bars(panel or canvas objects)<br>based on floats or double values.<br>i'm trying to think about scale,but that maybe will affect my other codes or the height of my applet.<br>thanks again.<br>

 

[carpeliam]

I don't recognize setBounds() off the top of my head... what class is that coming from? You mentioned &quot;object&quot;, which would lead me to believe that it is a method straight from the Object class, but I checked the API specifications (<A HREF="

http://java.sun.com/products/jdk/1.2/docs/api/index.html"

TARGET="_new">

http://java.sun.com/products/jdk/1.2/docs/api/index.html</A>,

that's a great link if you haven't seen it before) and I didn't see it under Object. What setBounds() method are you referring to? <p>Liam Morley<br><a href=mailto:lmorley@wpi.edu>lmorley@wpi.edu</a><br><a href=

http://www.wpi.edu/~lmorley/>

] :: imotic :: website :: [</a><br>"light the deep, and bring silence to the world.<br>
light the world, and bring depth to the silence.

 

[carpeliam]

wow, there is a rectangle with doubles. I didn't know this. I really need to go take a look at Java 2 stuff more often, there's so much I haven't been looking at. If you take a look at <A HREF="

http://java.sun.com/products/jdk/1.2/docs/api/java/awt/geom/Rectangle2D.Double.html"

TARGET="_new">

http://java.sun.com/products/jdk/1.2/docs/api/java/awt/geom/Rectangle2D.Double.html</A>

, you'll see - there really is a rectangle that has doubles for arguments. I don't know the internals of it.. but it makes sense, I guess. <p>Liam Morley<br><a href=mailto:lmorley@wpi.edu>lmorley@wpi.edu</a><br><a href=

http://www.wpi.edu/~lmorley/>

] :: imotic :: website :: [</a><br>"light the deep, and bring silence to the world.<br>
light the world, and bring depth to the silence.