/**
* Compute the position of a sprite if it is not attached.
*
* @param sprite The sprite.
* @param pos Where to stored the computed position, if null, the position is created.
* @param units The units the computed position must be given into.
* @return The same instance as pos, or a new one if pos was null.
*/
protected Point2D.Double getSpritePositionFree(
GraphicSprite sprite, Point2D.Double pos, Units units) {
if (pos == null) pos = new Point2D.Double();
if (sprite.getUnits() == units) {
pos.x = sprite.getX();
pos.y = sprite.getY();
} else if (units == Units.GU && sprite.getUnits() == Units.PX) {
pos.x = sprite.getX();
pos.y = sprite.getY();
xT.transform(pos, pos);
} else if (units == Units.PX && sprite.getUnits() == Units.GU) {
pos.x = sprite.getX();
pos.y = sprite.getY();
Tx.transform(pos, pos);
} else if (units == Units.GU && sprite.getUnits() == Units.PERCENTS) {
pos.x = metrics.lo.x + (sprite.getX() / 100f) * metrics.graphWidthGU();
pos.y = metrics.lo.y + (sprite.getY() / 100f) * metrics.graphHeightGU();
} else if (units == Units.PX && sprite.getUnits() == Units.PERCENTS) {
pos.x = (sprite.getX() / 100f) * metrics.viewport[2];
pos.y = (sprite.getY() / 100f) * metrics.viewport[3];
} else {
throw new RuntimeException("Unhandled yet sprite positioning.");
}
return pos;
}
/**
* Is the given sprite visible in the given area.
*
* @param sprite The sprite to check.
* @param X1 The min abscissa of the area.
* @param Y1 The min ordinate of the area.
* @param X2 The max abscissa of the area.
* @param Y2 The max ordinate of the area.
* @return True if the node lies in the given area.
*/
protected boolean isSpriteIn(GraphicSprite sprite, double X1, double Y1, double X2, double Y2) {
if (sprite.isAttachedToNode() && nodeInvisible.contains(sprite.getNodeAttachment().getId())) {
return false;
} else if (sprite.isAttachedToEdge() && !isEdgeVisible(sprite.getEdgeAttachment())) {
return false;
} else {
Values size = sprite.getStyle().getSize();
double w2 = metrics.lengthToPx(size, 0) / 2;
double h2 = size.size() > 1 ? metrics.lengthToPx(size, 1) / 2 : w2;
Point2D.Double src = spritePositionPx(sprite); // new Point2D.Double(
// sprite.getX(),
// sprite.getY() );
// Tx.transform( src, src );
double x1 = src.x - w2;
double x2 = src.x + w2;
double y1 = src.y - h2;
double y2 = src.y + h2;
if (x2 < X1) return false;
if (y2 < Y1) return false;
if (x1 > X2) return false;
if (y1 > Y2) return false;
return true;
}
}
/**
* Check if a sprite contains the given point (x,y).
*
* @param elt The sprite.
* @param x The point abscissa.
* @param y The point ordinate.
* @return True if (x,y) is in the given element.
*/
protected boolean spriteContains(GraphicElement elt, double x, double y) {
Values size = elt.getStyle().getSize();
double w2 = metrics.lengthToPx(size, 0) / 2;
double h2 = size.size() > 1 ? metrics.lengthToPx(size, 1) / 2 : w2;
Point2D.Double dst = spritePositionPx((GraphicSprite) elt); // new
// Point2D.Double(
// elt.getX(),
// elt.getY()
// );
// Point2D.Double dst = new Point2D.Double();
// Tx.transform( src, dst );
dst.x -= metrics.viewport[0];
dst.y -= metrics.viewport[1];
double x1 = dst.x - w2;
double x2 = dst.x + w2;
double y1 = dst.y - h2;
double y2 = dst.y + h2;
if (x < x1) return false;
if (y < y1) return false;
if (x > x2) return false;
if (y > y2) return false;
return true;
}
/**
* Compute the position of a sprite if attached to an edge.
*
* @param sprite The sprite.
* @param pos Where to stored the computed position, if null, the position is created.
* @param units The units the computed position must be given into.
* @return The same instance as pos, or a new one if pos was null.
*/
protected Point2D.Double getSpritePositionEdge(
GraphicSprite sprite, Point2D.Double pos, Units units) {
if (pos == null) pos = new Point2D.Double();
GraphicEdge edge = sprite.getEdgeAttachment();
if (edge.isCurve()) {
double ctrl[] = edge.getControlPoints();
Point2 p0 = new Point2(edge.from.getX(), edge.from.getY());
Point2 p1 = new Point2(ctrl[0], ctrl[1]);
Point2 p2 = new Point2(ctrl[1], ctrl[2]);
Point2 p3 = new Point2(edge.to.getX(), edge.to.getY());
Vector2 perp = CubicCurve.perpendicular(p0, p1, p2, p3, sprite.getX());
double y = metrics.lengthToGu(sprite.getY(), sprite.getUnits());
perp.normalize();
perp.scalarMult(y);
pos.x = CubicCurve.eval(p0.x, p1.x, p2.x, p3.x, sprite.getX()) - perp.data[0];
pos.y = CubicCurve.eval(p0.y, p1.y, p2.y, p3.y, sprite.getX()) - perp.data[1];
} else {
double x = ((GraphicNode) edge.getSourceNode()).x;
double y = ((GraphicNode) edge.getSourceNode()).y;
double dx = ((GraphicNode) edge.getTargetNode()).x - x;
double dy = ((GraphicNode) edge.getTargetNode()).y - y;
double d = sprite.getX(); // Percent on the edge.
double o = metrics.lengthToGu(sprite.getY(), sprite.getUnits());
// Offset from the position given by percent, perpendicular to the
// edge.
d = d > 1 ? 1 : d;
d = d < 0 ? 0 : d;
x += dx * d;
y += dy * d;
d = (double) Math.sqrt(dx * dx + dy * dy);
dx /= d;
dy /= d;
x += -dy * o;
y += dx * o;
pos.x = x;
pos.y = y;
if (units == Units.PX) {
Tx.transform(pos, pos);
}
}
return pos;
}
/**
* Is the given node visible in the given area.
*
* @param node The node to check.
* @param X1 The min abscissa of the area.
* @param Y1 The min ordinate of the area.
* @param X2 The max abscissa of the area.
* @param Y2 The max ordinate of the area.
* @return True if the node lies in the given area.
*/
protected boolean isNodeIn(GraphicNode node, double X1, double Y1, double X2, double Y2) {
Values size = node.getStyle().getSize();
double w2 = metrics.lengthToPx(size, 0) / 2;
double h2 = size.size() > 1 ? metrics.lengthToPx(size, 1) / 2 : w2;
Point2D.Double src = new Point2D.Double(node.getX(), node.getY());
boolean vis = true;
Tx.transform(src, src);
double x1 = src.x - w2;
double x2 = src.x + w2;
double y1 = src.y - h2;
double y2 = src.y + h2;
if (x2 < X1) vis = false;
else if (y2 < Y1) vis = false;
else if (x1 > X2) vis = false;
else if (y1 > Y2) vis = false;
return vis;
}
/**
* Compute a transformation matrix that pass from graph units (user space) to pixel units (device
* space) so that the whole graph is visible.
*
* @param g2 The Swing graphics.
*/
protected void autoFitView(Graphics2D g2) {
double sx, sy;
double tx, ty;
double padXgu = getPaddingXgu() * 2;
double padYgu = getPaddingYgu() * 2;
double padXpx = getPaddingXpx() * 2;
double padYpx = getPaddingYpx() * 2;
sx = (metrics.viewport[2] - padXpx) / (metrics.size.data[0] + padXgu); // Ratio
// along
// X
sy = (metrics.viewport[3] - padYpx) / (metrics.size.data[1] + padYgu); // Ratio
// along
// Y
tx = metrics.lo.x + (metrics.size.data[0] / 2); // Centre of graph in X
ty = metrics.lo.y + (metrics.size.data[1] / 2); // Centre of graph in Y
if (sx <= 0) {
sx =
(metrics.viewport[2] - Math.min(metrics.viewport[2] - 1, padXpx))
/ (metrics.size.data[0] + padXgu);
}
if (sy <= 0) {
sy =
(metrics.viewport[3] - Math.min(metrics.viewport[3] - 1, padYpx))
/ (metrics.size.data[1] + padYgu);
}
if (sx > sy) // The least ratio.
sx = sy;
else sy = sx;
g2.translate(metrics.viewport[2] / 2, metrics.viewport[3] / 2);
if (rotation != 0) g2.rotate(rotation / (180 / Math.PI));
g2.scale(sx, -sy);
g2.translate(-tx, -ty);
Tx = g2.getTransform();
xT = new AffineTransform(Tx);
try {
xT.invert();
} catch (NoninvertibleTransformException e) {
logger.warning("Cannot inverse gu2px matrix.");
}
zoom = 1;
center.set(tx, ty, 0);
metrics.setRatioPx2Gu(sx);
metrics.loVisible.copy(metrics.lo);
metrics.hiVisible.copy(metrics.hi);
}
/**
* Compute a transformation that pass from graph units (user space) to a pixel units (device
* space) so that the view (zoom and centre) requested by the user is produced.
*
* @param g2 The Swing graphics.
*/
protected void userView(Graphics2D g2) {
double sx, sy;
double tx, ty;
double padXgu = getPaddingXgu() * 2;
double padYgu = getPaddingYgu() * 2;
double padXpx = getPaddingXpx() * 2;
double padYpx = getPaddingYpx() * 2;
double gw = gviewport != null ? gviewport[2] - gviewport[0] : metrics.size.data[0];
double gh = gviewport != null ? gviewport[3] - gviewport[1] : metrics.size.data[1];
sx = (metrics.viewport[2] - padXpx) / ((gw + padXgu) * zoom);
sy = (metrics.viewport[3] - padYpx) / ((gh + padYgu) * zoom);
tx = center.x;
ty = center.y;
if (sx > sy) // The least ratio.
sx = sy;
else sy = sx;
g2.translate((metrics.viewport[2] / 2), (metrics.viewport[3] / 2));
if (rotation != 0) g2.rotate(rotation / (180 / Math.PI));
g2.scale(sx, -sy);
g2.translate(-tx, -ty);
Tx = g2.getTransform();
xT = new AffineTransform(Tx);
try {
xT.invert();
} catch (NoninvertibleTransformException e) {
logger.log(Level.WARNING, "Cannot inverse gu2px matrix.", e);
}
metrics.setRatioPx2Gu(sx);
double w2 = (metrics.viewport[2] / sx) / 2;
double h2 = (metrics.viewport[3] / sx) / 2;
metrics.loVisible.set(center.x - w2, center.y - h2);
metrics.hiVisible.set(center.x + w2, center.y + h2);
}
/**
* Set the output view port size in pixels.
*
* @param viewportWidth The width in pixels of the view port.
* @param viewportHeight The width in pixels of the view port.
*/
public void setViewport(
double viewportX, double viewportY, double viewportWidth, double viewportHeight) {
metrics.setViewport(viewportX, viewportY, viewportWidth, viewportHeight);
}
/*
* (non-Javadoc)
*
* @see org.graphstream.ui.swingViewer.util.Camera#setBounds(double, double,
* double, double, double, double)
*/
public void setBounds(
double minx, double miny, double minz, double maxx, double maxy, double maxz) {
metrics.setBounds(minx, miny, minz, maxx, maxy, maxz);
}