Component resize, paint and AffineTransform

Question

Hello,
I am resizing a JInternalFrame that contains a JPanel.
When I call:
MyJPanel.repaint();The paint function gets the dimensions of the JPanel
using getWidth() and getHeight(), once, at the start of the
paint function. The function then proceeds to plot some lines and
points on a graph. Everything appears to work fine for lines and points (ie: drawOval).
The function then goes on to draw some text for the axes of the graph. The Y axis
text plots fine. The X axis text is rotated using AffineTransform and plots intermittently
with the correct and incorrect position.
Calling repaint() for the JPanel, without resizing,
everything renders in the proper place
via the overridden paint() procedure for that panel.
When I resize the JInternalFrame, thus causing the
JPanel to also automatically resize and repaint, the JPanel
paints all lines and points in the correct locations
with respect to the bounds of the JPanel. The
Y axis text, drawn using drawText() plots in the correct place.
The X axis text then plots in the wrong place after AffineTransform
positioning in a location that would indicate it is transforming based on the
coordinate system of the JInternalFrame rather than the JPanel (??).
To create the text transform I am calling the following function:
public void drawRotatedText(Graphics g, String text, int xoff, int yoff, double angle_degrees){
                    Graphics2D g2d=(Graphics2D)g;
                    AffineTransform old_at=((Graphics2D)g).getTransform();
                    AffineTransform at = new AffineTransform(old_at);
                    at.setToTranslation(xoff, yoff);
                    at.rotate((angle_degrees/360.0)*Math.PI*2.0);
                    g2d.setTransform(at);
                    g2d.drawString(text, 0, 0);
                    g2d.setTransform(old_at);
                }The parameter Graphics g is the Graphics passed from public void MyJPanel.paint(Graphics g) .
Why would AffineTransform get confused regarding which component the Graphics is coming from?
More importantly, how can I avoid the problem?
Thanks,
P

Answer 1

>
To create the text transform I am calling the following function:
public void drawRotatedText(Graphics g, String text, int xoff, int yoff, double angle_degrees){
Graphics2D g2d=(Graphics2D)g;
AffineTransform old_at=((Graphics2D)g).getTransform();
AffineTransform at = new AffineTransform(old_at);
at.setToTranslation(xoff, yoff);
at.rotate((angle_degrees/360.0)*Math.PI*2.0);
g2d.setTransform(at);
g2d.drawString(text, 0, 0);
g2d.setTransform(old_at);
The problem is with the use of at.setToTranslation(xoff, yoff); instead of at.translate(xoff, yoff).
After changing that the problem cleared up.
P