I have a class that draws itself into a PGraphic, and I want to change certain attributes of the class' appearance at runtime. This example just makes a basic music staff. I want to change the background colour when I roll over the staff, and change the staff colour when it's selected.

Code:

public void draw()

{
container.beginDraw();
container.background(BGColour);
int[] strokeVals;
if(selected)
strokeVals = strokeSelected;
else
strokeVals = strokeNormal;
int strkR = strokeVals[0];
int strkG = strokeVals[1];
int strkB = strokeVals[2];
container.stroke(strkR, strkG, strkB);
lines = new int[5][4];
int offset = 8;
for(int i=0;i < 5;i++)
{
lines[i][0] = 0;
lines[i][1] = 33 + (offset * i);
lines[i][2] = length;
lines[i][3] = 33 + (offset * i);
}
for(int c=0;c < 5;c++)
{
container.line(lines[c][0], lines[c][1], lines[c][2], lines[c][3]);
}
container.endDraw();
app.image(container, xpos, ypos);
}
 

Although the changing values for the variables "BGColour", and "strokeSelected" and "strokeNormal" are being registered, the staff's appearance doesn't change. From the PGraphics example, it seems clear that a PGraphic can be altered dynamically at runtime, but it seems to ignore the changes in my case. Any indication from this code what might be going on?

thanks,

J.