public void setGradient(MultipleGradientPaint grad) {
MultipleGradientPaint old = getGradient();
if (grad instanceof LinearGradientPaint) {
LinearGradientPaint paint = (LinearGradientPaint) grad;
this.start = paint.getStartPoint();
this.end = paint.getEndPoint();
} else {
RadialGradientPaint paint = (RadialGradientPaint) grad;
this.start = paint.getCenterPoint();
this.end = new Point2D.Double(start.getX(), start.getY() + paint.getRadius());
}
this.gradient = grad;
firePropertyChange("gradient", old, getGradient());
repaint();
}
/*
*
* @see xtrememp.visual.Visualization#render
*/
@Override
public synchronized void render(Graphics g, int width, int height, Context dssContext) {
float leftLevel = 0.0f;
float rightLevel = 0.0f;
int length = dssContext.getLength();
float[][] channels = dssContext.getDataNormalized();
for (int a = 0; a < length; a++) {
leftLevel += Math.abs(channels[0][a]);
rightLevel += Math.abs(channels[1][a]);
}
leftLevel = ((leftLevel * 2.0f) / (float) length);
rightLevel = ((rightLevel * 2.0f) / (float) length);
if (leftLevel > 1.0f) {
leftLevel = 1.0f;
}
if (rightLevel > 1.0f) {
rightLevel = 1.0f;
}
if (leftLevel >= (oldLeft - decay)) {
oldLeft = leftLevel;
} else {
oldLeft -= decay;
if (oldLeft < 0) {
oldLeft = 0;
}
}
if (rightLevel >= (oldRight - decay)) {
oldRight = rightLevel;
} else {
oldRight -= decay;
if (oldRight < 0) {
oldRight = 0;
}
}
g.setColor(Color.black);
g.fillRect(0, 0, width, height);
if (lgp == null || lgp.getEndPoint().getX() != width) {
Point start = new Point(0, 0);
Point end = new Point(width, 0);
float[] dist = {0.0f, 0.25f, 0.75f, 1.0f};
Color[] colors = {Color.green.darker().darker(), Color.green, Color.yellow, Color.red};
lgp = new LinearGradientPaint(start, end, dist, colors, CycleMethod.REPEAT);
}
((Graphics2D) g).setPaint(lgp);
int wHeight = (height >> 1) - 8;
g.fillRect(8, 6, (int) (oldLeft * (float) (width - 32)), wHeight);
g.fillRect(8, wHeight + 10, (int) (oldRight * (float) (width - 32)), wHeight);
}
@Override
public java.awt.PaintContext createContext(
final java.awt.image.ColorModel COLOR_MODEL,
final java.awt.Rectangle DEVICE_BOUNDS,
java.awt.geom.Rectangle2D USER_BOUNDS,
java.awt.geom.AffineTransform X_FORM,
java.awt.RenderingHints HINTS) {
return GRADIENT.createContext(COLOR_MODEL, DEVICE_BOUNDS, USER_BOUNDS, X_FORM, HINTS);
}
@Override
public int getTransparency() {
return GRADIENT.getTransparency();
}
/**
* Returns the point where the wrapped java.awt.LinearGradientPaint will stop
*
* @return the point where the wrapped java.awt.LinearGradientPaint will stop
*/
public java.awt.geom.Point2D getEndPoint() {
return GRADIENT.getEndPoint();
}