public void paint(Graphics g) {
Graphics2D g_2d = (Graphics2D) g;
Ellipse2D ellipse = new Ellipse2D.Double(0, 2, 80, 80);
Rectangle2D rect = new Rectangle2D.Double(40, 2, 80, 80);
Area a1 = new Area(ellipse);
Area a2 = new Area(rect);
a1.intersect(a2); // "Óë"
g_2d.fill(a1);
ellipse.setFrame(130, 2, 80, 80);
rect.setFrame(170, 2, 80, 80);
a1 = new Area(ellipse);
a2 = new Area(rect);
a1.add(a2); // "»ò"
g_2d.draw(a1);
ellipse.setFrame(0, 90, 80, 80);
rect.setFrame(40, 90, 80, 80);
a1 = new Area(ellipse);
a2 = new Area(rect);
a1.subtract(a2); // "²î"
g_2d.draw(a1);
ellipse.setFrame(130, 90, 80, 80);
rect.setFrame(170, 90, 80, 80);
a1 = new Area(ellipse);
a2 = new Area(rect);
a1.exclusiveOr(a2); // "Òì»ò"
g_2d.fill(a1);
}
/** @see prefuse.render.AbstractShapeRenderer#getRawShape(prefuse.visual.VisualItem) */
@Override
protected Shape getRawShape(VisualItem item) {
double x1 = item.getDouble(VisualItem.X);
double y1 = item.getDouble(VisualItem.Y);
double x2 = item.getDouble(VisualItem.X2);
double y2 = item.getDouble(VisualItem.Y2);
boolean isX = item.getBoolean(DocumentGridAxisLayout.IS_X);
double midPoint = item.getDouble(DocumentGridAxisLayout.MID_POINT);
// horizontal or vertical coords should be manually held constant so that fisheye works
// properly
if (isX) {
// vertical line
m_line.setLine(x1, y1, x1, y2);
} else {
// horizontal line
m_line.setLine(x1, y1, x2, y1);
}
if (!item.canGetString(VisualItem.LABEL)) {
return m_line;
}
String label = item.getString(VisualItem.LABEL);
if (label == null) {
return m_line;
}
FontMetrics fm = DEFAULT_GRAPHICS.getFontMetrics(item.getFont());
m_ascent = fm.getAscent();
int h = fm.getHeight();
int w = fm.stringWidth(label);
double tx, ty;
int labelOffset = 10;
if (isX) {
// vertical axis
// get text x-coord, center at midPoint
// tx = x1 + (x2-x1)/2 - w/2;
// tx = midPoint + (x1+midPoint)/2 - w/2;
// tx = x1 + midPoint/2 - w/2;
// simpler approach: just add a fixed distance
tx = x1 + labelOffset;
// get text y-coord
ty = y2 - h;
} else {
// horiz axis
// get text x-coord
tx = x1 - w - 2;
// get text y-coord, center at midPoint
// ty = y1 + (y2-y1)/2 - h/2;
// ty = y1 + midPoint/2 - h/2;
// simpler approach: just add a fixed distance
ty = y1 + labelOffset;
}
m_box.setFrame(tx, ty, w, h);
return m_box;
}
