public ArborNode nearest(int sx, int sy) { ArborPoint x = this.fromScreen(sx, sy); ArborNode resNode = null; double minDist = +1.0; foreach (ArborNode node in this.fNodes) { ArborPoint z = node.Pt; if (z.exploded()) { continue; } double dist = z.sub(x).magnitude(); if (dist < minDist) { resNode = node; minDist = dist; } } //minDist = this.toScreen(resNode.Pt).sub(this.toScreen(x)).magnitude(); return(resNode); }
private void updateGraphBounds() { ArborPoint lt = new ArborPoint(-1, -1); ArborPoint rb = new ArborPoint(1, 1); foreach (ArborNode node in this.fNodes) { ArborPoint pt = node.Pt; if (pt.exploded()) { continue; } if (pt.X < lt.X) { lt.X = pt.X; } if (pt.Y < lt.Y) { lt.Y = pt.Y; } if (pt.X > rb.X) { rb.X = pt.X; } if (pt.Y > rb.Y) { rb.Y = pt.Y; } } lt.X -= 1.2; lt.Y -= 1.2; rb.X += 1.2; rb.Y += 1.2; ArborPoint sz = rb.sub(lt); ArborPoint cent = lt.add(sz.div(2)); ArborPoint d = new ArborPoint(Math.Max(sz.X, 4.0), Math.Max(sz.Y, 4.0)).div(2); this.fGraphBounds = new PSBounds(cent.sub(d), cent.add(d)); }