Rectangle2D rect = new Rectangle2D.Double();
for (int i = 0; i < numStars; i++) {
g2.setColor(colors[i%3]);
g2.setComposite(AlphaComposite.getInstance(
AlphaComposite.SRC_OVER, (float) Math.random()));
rect.setRect(w*Math.random(), h*Math.random(),2,2);
g2.fill(rect);
}
FontRenderContext frc = g2.getFontRenderContext();
Font font = new Font("serif.bolditalic", Font.PLAIN, fontSize);
shape = font.createGlyphVector(frc, text).getOutline();
tshape = at.createTransformedShape(shape);
PathIterator pi = shape.getPathIterator(null);
float seg[] = new float[6];
float tseg[] = new float[6];
GeneralPath working = new GeneralPath(GeneralPath.WIND_NON_ZERO);
float x=0, y=0; // Current point on the path
float tx=0, ty=0; // Transformed path point
float cx=0, cy=0; // Last moveTo point, for SEG_CLOSE
float tcx=0, tcy=0; // Transformed last moveTo point
//
// Iterate through the Shape and build the ribbon
// by adding general path objects.
//
while(!pi.isDone()) {
int segType = pi.currentSegment(seg);
switch(segType) {
case PathIterator.SEG_MOVETO:
at.transform(seg, 0, tseg, 0, 1);
x = seg[0];
y = seg[1];
tx = tseg[0];
ty = tseg[1];
cx = x;
cy = y;
tcx = tx;
tcy = ty;
break;
case PathIterator.SEG_LINETO:
at.transform(seg, 0, tseg, 0, 1);
if (Line2D.relativeCCW(x, y, tx, ty,
seg[0], seg[1]) < 0) {
working.moveTo(x, y);
working.lineTo(seg[0], seg[1]);
working.lineTo(tseg[0], tseg[1]);
working.lineTo(tx, ty);
working.lineTo(x, y);
} else {
working.moveTo(x, y);
working.lineTo(tx, ty);
working.lineTo(tseg[0], tseg[1]);
working.lineTo(seg[0], seg[1]);
working.lineTo(x, y);
}
x = seg[0];
y = seg[1];
tx = tseg[0];
ty = tseg[1];
break;
case PathIterator.SEG_QUADTO:
at.transform(seg, 0, tseg, 0, 2);
if (Line2D.relativeCCW(x, y, tx, ty,
seg[2], seg[3]) < 0) {
working.moveTo(x, y);
working.quadTo(seg[0], seg[1],
seg[2], seg[3]);
working.lineTo(tseg[2], tseg[3]);
working.quadTo(tseg[0], tseg[1],
tx, ty);
working.lineTo(x, y);
} else {
working.moveTo(x, y);
working.lineTo(tx, ty);
working.quadTo(tseg[0], tseg[1],
tseg[2], tseg[3]);
working.lineTo(seg[2], seg[3]);
working.quadTo(seg[0], seg[1],
x, y);
}
x = seg[2];
y = seg[3];
tx = tseg[2];
ty = tseg[3];
break;
case PathIterator.SEG_CUBICTO:
at.transform(seg, 0, tseg, 0, 3);
if (Line2D.relativeCCW(x, y, tx, ty,
seg[4], seg[5]) < 0) {
working.moveTo(x, y);
working.curveTo(seg[0], seg[1],
seg[2], seg[3],
seg[4], seg[5]);
working.lineTo(tseg[4], tseg[5]);
working.curveTo(tseg[2], tseg[3],
tseg[0], tseg[1],
tx, ty);
working.lineTo(x, y);
} else {
working.moveTo(x, y);
working.lineTo(tx, ty);
working.curveTo(tseg[0], tseg[1],
tseg[2], tseg[3],
tseg[4], tseg[5]);
working.lineTo(seg[4], seg[5]);
working.curveTo(seg[2], seg[3],
seg[0], seg[1],
x, y);
}
x = seg[4];
y = seg[5];
tx = tseg[4];
ty = tseg[5];
break;
case PathIterator.SEG_CLOSE:
if (Line2D.relativeCCW(x, y, tx, ty,
cx, cy) < 0) {
working.moveTo(x, y);
working.lineTo(cx, cy);
working.lineTo(tcx, tcy);
working.lineTo(tx, ty);
working.lineTo(x, y);
} else {
working.moveTo(x, y);
working.lineTo(tx, ty);
working.lineTo(tcx, tcy);
working.lineTo(cx, cy);
working.lineTo(x, y);
}
x = cx;
y = cy;
tx = tcx;
ty = tcy;
}
pi.next();
} // while
ribbon = working;
g2.setComposite(AlphaComposite.SrcOver);
Rectangle r = shape.getBounds();
g2.translate(w*.5-r.width*.5,h*.5+r.height*.5);
g2.setColor(Color.blue);
g2.fill(tshape);
g2.setColor(new Color(255, 255, 255, 200));
g2.fill(ribbon);
g2.setColor(Color.white);
g2.fill(shape);
g2.setColor(Color.blue);
g2.draw(shape);
