/** @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;
}
/**
* Tests if the shape contains a point.
*
* @param p coord point
* @return true if shape contains p
*/
public boolean contains(Point2D p) {
double x = startPoint.getX();
double y = startPoint.getY();
double xEnd = endPoint.getX();
double yEnd = endPoint.getY();
Line2D line = new Line2D.Double(x, y, xEnd, yEnd);
return line.intersects(p.getX(), p.getY(), 10, 10);
}
/** @see prefuse.render.Renderer#setBounds(prefuse.visual.VisualItem) */
@Override
public void setBounds(VisualItem item) {
if (!m_manageBounds) {
return;
}
Shape shape = getShape(item);
if (shape == null) {
item.setBounds(item.getX(), item.getY(), 0, 0);
} else if (shape == m_line) {
GraphicsLib.setBounds(item, shape, getStroke(item));
} else {
m_box.add(m_line.getX1(), m_line.getY1());
m_box.add(m_line.getX2(), m_line.getY2());
item.setBounds(m_box.getMinX(), m_box.getMinY(), m_box.getWidth(), m_box.getHeight());
}
}
/**
* Check if a line intersects with this polygon
*
* @param line
* @return True if intersects, false otherwise
*/
public boolean intersects(Line2D line) {
if (!line.getBounds().intersects(getBounds())) {
return false;
}
generateEdges();
for (Enumeration e = edges.elements(); e.hasMoreElements(); ) {
Line2D current = (Line2D) e.nextElement();
if (current.intersects(line)) {
return true;
}
}
return contains(line.getStart()) || contains(line.getEnd());
}
/**
* Check if a point is contained within this polygon
*
* @param point
* @return true if contained, false otherwise
*/
public boolean contains(Vector2D point) {
if (!getBounds().contains(point)) {
System.out.println("AAA: " + point);
return false;
}
Line2D verticalRay = new Line2D(point, new Vector2D(point.getX(), Double.POSITIVE_INFINITY));
int intersectionCount = 0;
boolean contains = false;
generateEdges();
for (Enumeration e = edges.elements(); e.hasMoreElements(); ) {
Line2D testLine = (Line2D) e.nextElement();
double minY = Math.min(testLine.getStart().getY(), testLine.getEnd().getY());
double maxY = Math.max(testLine.getStart().getY(), testLine.getEnd().getY());
if (testLine.getGradient() == Double.POSITIVE_INFINITY) {
if (point.getX() == testLine.getStart().getX()
&& point.getY() >= minY
&& point.getY() <= maxY) {
contains = true;
}
} else {
if (verticalRay.intersects(testLine)) {
intersectionCount++;
}
}
}
return (contains || (intersectionCount % 2 == 1));
}
/**
* Check if another polygon intersects with this polygon
*
* @param polygon
* @return true if intersects, false otherwise
*/
public boolean intersects(Polygon2D polygon) {
if (!polygon.getBounds().intersects(getBounds())) {
return false;
}
for (Enumeration e1 = edges(); e1.hasMoreElements(); ) {
Line2D current = (Line2D) e1.nextElement();
for (Enumeration e2 = polygon.edges(); e2.hasMoreElements(); ) {
Line2D test = (Line2D) e2.nextElement();
if (current.intersects(test)) {
return true;
}
}
}
return false;
}
boolean pointInLine(Point p, int fx, int fy, int tx, int ty) {
double d =
Line2D.ptLineDist(
(double) fx, (double) fy, (double) tx, (double) ty, (double) p.x, (double) p.y);
return d <= 6.0;
}
/**
* This utility function makes it easy to check whether the coordinates of the user's mouse click
* (px,py) are on (or very close to) the line between the two points, (x1,y1) and (x2,y2).
*
* @param px x coordinate of mouse click
* @param py y coordinate of mouse click
* @param x1 x point of the first coordinate of object to check for mouse click proximity
* @param y1 y point of the first coordinate of object to check for mouse click proximity
* @param x2 x point of the second coordinate of object to check for mouse click proximity
* @param y2 y point of the second coordinate of object to check for mouse click proximity
* @return true if the point where the user clicked is on or close to the line between the two
* points,(x1,y1) and (x2,y2)
*/
public static boolean clickHitLine(int px, int py, int x1, int y1, int x2, int y2) {
return Line2D.ptSegDist(x1, y1, x2, y2, px, py) < SELECTION_DISTANCE;
}
