List of usage examples for java.awt.geom Line2D getX1
public abstract double getX1();
From source file:GeometryUtilities.java
public static double slope(Line2D line) { return slope(line.getX1(), line.getY1(), line.getX2(), line.getY2()); }
From source file:LineUtilities.java
/** * Clips the specified line to the given rectangle. * * @param line the line (<code>null</code> not permitted). * @param rect the clipping rectangle (<code>null</code> not permitted). * * @return <code>true</code> if the clipped line is visible, and * <code>false</code> otherwise. *///from w ww.j a va 2 s. c o m public static boolean clipLine(Line2D line, Rectangle2D rect) { double x1 = line.getX1(); double y1 = line.getY1(); double x2 = line.getX2(); double y2 = line.getY2(); double minX = rect.getMinX(); double maxX = rect.getMaxX(); double minY = rect.getMinY(); double maxY = rect.getMaxY(); int f1 = rect.outcode(x1, y1); int f2 = rect.outcode(x2, y2); while ((f1 | f2) != 0) { if ((f1 & f2) != 0) { return false; } double dx = (x2 - x1); double dy = (y2 - y1); // update (x1, y1), (x2, y2) and f1 and f2 using intersections // then recheck if (f1 != 0) { // first point is outside, so we update it against one of the // four sides then continue if ((f1 & Rectangle2D.OUT_LEFT) == Rectangle2D.OUT_LEFT && dx != 0.0) { y1 = y1 + (minX - x1) * dy / dx; x1 = minX; } else if ((f1 & Rectangle2D.OUT_RIGHT) == Rectangle2D.OUT_RIGHT && dx != 0.0) { y1 = y1 + (maxX - x1) * dy / dx; x1 = maxX; } else if ((f1 & Rectangle2D.OUT_BOTTOM) == Rectangle2D.OUT_BOTTOM && dy != 0.0) { x1 = x1 + (maxY - y1) * dx / dy; y1 = maxY; } else if ((f1 & Rectangle2D.OUT_TOP) == Rectangle2D.OUT_TOP && dy != 0.0) { x1 = x1 + (minY - y1) * dx / dy; y1 = minY; } f1 = rect.outcode(x1, y1); } else if (f2 != 0) { // second point is outside, so we update it against one of the // four sides then continue if ((f2 & Rectangle2D.OUT_LEFT) == Rectangle2D.OUT_LEFT && dx != 0.0) { y2 = y2 + (minX - x2) * dy / dx; x2 = minX; } else if ((f2 & Rectangle2D.OUT_RIGHT) == Rectangle2D.OUT_RIGHT && dx != 0.0) { y2 = y2 + (maxX - x2) * dy / dx; x2 = maxX; } else if ((f2 & Rectangle2D.OUT_BOTTOM) == Rectangle2D.OUT_BOTTOM && dy != 0.0) { x2 = x2 + (maxY - y2) * dx / dy; y2 = maxY; } else if ((f2 & Rectangle2D.OUT_TOP) == Rectangle2D.OUT_TOP && dy != 0.0) { x2 = x2 + (minY - y2) * dx / dy; y2 = minY; } f2 = rect.outcode(x2, y2); } } line.setLine(x1, y1, x2, y2); return true; // the line is visible - if it wasn't, we'd have // returned false from within the while loop above }
From source file:Main.java
/** * Creates a region surrounding a line segment by 'widening' the line * segment. A typical use for this method is the creation of a * 'clickable' region for a line that is displayed on-screen. * * @param line the line (<code>null</code> not permitted). * @param width the width of the region. * * @return A region that surrounds the line. *//*from ww w . j a va 2 s.c o m*/ public static Shape createLineRegion(final Line2D line, final float width) { final GeneralPath result = new GeneralPath(); final float x1 = (float) line.getX1(); final float x2 = (float) line.getX2(); final float y1 = (float) line.getY1(); final float y2 = (float) line.getY2(); if ((x2 - x1) != 0.0) { final double theta = Math.atan((y2 - y1) / (x2 - x1)); final float dx = (float) Math.sin(theta) * width; final float dy = (float) Math.cos(theta) * width; result.moveTo(x1 - dx, y1 + dy); result.lineTo(x1 + dx, y1 - dy); result.lineTo(x2 + dx, y2 - dy); result.lineTo(x2 - dx, y2 + dy); result.closePath(); } else { // special case, vertical line result.moveTo(x1 - width / 2.0f, y1); result.lineTo(x1 + width / 2.0f, y1); result.lineTo(x2 + width / 2.0f, y2); result.lineTo(x2 - width / 2.0f, y2); result.closePath(); } return result; }
From source file:de.bund.bfr.jung.JungUtils.java
private static Line2D getOrthogonal(Line2D l) { float x1 = (float) l.getX1(); float x2 = (float) l.getX2(); float y1 = (float) l.getY1(); float y2 = (float) l.getY2(); float dx = x2 - x1; float dy = y2 - y1; float nx1 = x1 + dx / 2; float ny1 = y1 + dy / 2; float nx2 = nx1 - dy; float ny2 = ny1 + dx; return new Line2D.Float(nx1, ny1, nx2, ny2); }
From source file:de.bund.bfr.jung.JungUtils.java
private static Point2D getIntersection(Line2D l1, Line2D l2) { float x1 = (float) l1.getX1(); float x2 = (float) l1.getX2(); float x3 = (float) l2.getX1(); float x4 = (float) l2.getX2(); float y1 = (float) l1.getY1(); float y2 = (float) l1.getY2(); float y3 = (float) l2.getY1(); float y4 = (float) l2.getY2(); float factor1 = x1 * y2 - y1 * x2; float factor2 = x3 * y4 - y3 * x4; float denom = (x1 - x2) * (y3 - y4) - (y1 - y2) * (x3 - x4); float x = (factor1 * (x3 - x4) - (x1 - x2) * factor2) / denom; float y = (factor1 * (y3 - y4) - (y1 - y2) * factor2) / denom; return new Point2D.Float(x, y); }
From source file:GeometryUtilities.java
public static Vector<Point2D> getCrossings(Line2D line0, Line2D line1) { Vector<Point2D> ret = new Vector<Point2D>(); if (line0.intersectsLine(line1)) { Point2D.Double intersection = new Point2D.Double(0.0, 0.0); double xDiff0 = line0.getX2() - line0.getX1(); double xDiff1 = line1.getX2() - line1.getX1(); double yDiff0 = line0.getY2() - line0.getY1(); double yDiff1 = line1.getY2() - line1.getY1(); double xDiff2 = line0.getX1() - line1.getX1(); double yDiff2 = line0.getY1() - line1.getY1(); double div = yDiff1 * xDiff0 - xDiff1 * yDiff0; double u = (xDiff1 * yDiff2 - yDiff1 * xDiff2) / div; intersection.x = line0.getX1() + u * xDiff0; intersection.y = line0.getY1() + u * yDiff0; ret.add(intersection);//www . jav a 2 s.com } return ret; }
From source file:Main.java
/** * Serialises a <code>Shape</code> object. * * @param shape the shape object (<code>null</code> permitted). * @param stream the output stream (<code>null</code> not permitted). * * @throws IOException if there is an I/O error. *///from w ww .j a va 2s . c o m public static void writeShape(final Shape shape, final ObjectOutputStream stream) throws IOException { if (stream == null) { throw new IllegalArgumentException("Null 'stream' argument."); } if (shape != null) { stream.writeBoolean(false); if (shape instanceof Line2D) { final Line2D line = (Line2D) shape; stream.writeObject(Line2D.class); stream.writeDouble(line.getX1()); stream.writeDouble(line.getY1()); stream.writeDouble(line.getX2()); stream.writeDouble(line.getY2()); } else if (shape instanceof Rectangle2D) { final Rectangle2D rectangle = (Rectangle2D) shape; stream.writeObject(Rectangle2D.class); stream.writeDouble(rectangle.getX()); stream.writeDouble(rectangle.getY()); stream.writeDouble(rectangle.getWidth()); stream.writeDouble(rectangle.getHeight()); } else if (shape instanceof Ellipse2D) { final Ellipse2D ellipse = (Ellipse2D) shape; stream.writeObject(Ellipse2D.class); stream.writeDouble(ellipse.getX()); stream.writeDouble(ellipse.getY()); stream.writeDouble(ellipse.getWidth()); stream.writeDouble(ellipse.getHeight()); } else if (shape instanceof Arc2D) { final Arc2D arc = (Arc2D) shape; stream.writeObject(Arc2D.class); stream.writeDouble(arc.getX()); stream.writeDouble(arc.getY()); stream.writeDouble(arc.getWidth()); stream.writeDouble(arc.getHeight()); stream.writeDouble(arc.getAngleStart()); stream.writeDouble(arc.getAngleExtent()); stream.writeInt(arc.getArcType()); } else if (shape instanceof GeneralPath) { stream.writeObject(GeneralPath.class); final PathIterator pi = shape.getPathIterator(null); final float[] args = new float[6]; stream.writeBoolean(pi.isDone()); while (!pi.isDone()) { final int type = pi.currentSegment(args); stream.writeInt(type); // TODO: could write this to only stream the values // required for the segment type for (int i = 0; i < 6; i++) { stream.writeFloat(args[i]); } stream.writeInt(pi.getWindingRule()); pi.next(); stream.writeBoolean(pi.isDone()); } } else { stream.writeObject(shape.getClass()); stream.writeObject(shape); } } else { stream.writeBoolean(true); } }
From source file:ShapeTransform.java
/** * Clips the given shape to the given bounds. If the shape is a Line2D, manual * clipping is performed, as the built in Area does not handle lines. * /* ww w . j ava 2 s . co m*/ * @param s * the shape to be clipped * @param bounds * the bounds to which the shape should be clipped * @return the clipped shape. */ public static Shape performCliping(final Shape s, final Rectangle2D bounds) { if (s instanceof Line2D) { final Line2D line = (Line2D) s; final Point2D[] clipped = getClipped(line.getX1(), line.getY1(), line.getX2(), line.getY2(), -DELTA, DELTA + bounds.getWidth(), -DELTA, DELTA + bounds.getHeight()); if (clipped == null) { return new GeneralPath(); } return new Line2D.Float(clipped[0], clipped[1]); } final Rectangle2D boundsCorrected = bounds.getBounds2D(); boundsCorrected.setRect(-DELTA, -DELTA, DELTA + boundsCorrected.getWidth(), DELTA + boundsCorrected.getHeight()); final Area a = new Area(boundsCorrected); if (a.isEmpty()) { // don't clip ... Area does not like lines // operations with lines always result in an empty Bounds:(0,0,0,0) area return new GeneralPath(); } final Area clipArea = new Area(s); a.intersect(clipArea); return a; }
From source file:net.sourceforge.processdash.ev.ui.chart.TooltipLineXYLineAndShapeRenderer.java
/** * Creates and returns a polygon that has the same shape as the line passed * as a parameter, but ticker so it can be used as a mouse-over tooltip area *//*from w w w . j a v a 2 s. c o m*/ private Shape getTooltipArea(Line2D line, int series) { GeneralPath area = new GeneralPath(); float areaWidth = getAreaWidth(series); area.moveTo((float) line.getX1(), (float) (line.getY1() + areaWidth / 2)); area.lineTo((float) line.getX2(), (float) (line.getY2() + areaWidth / 2)); area.lineTo((float) line.getX2(), (float) (line.getY2() - areaWidth / 2)); area.lineTo((float) line.getX1(), (float) (line.getY1() - areaWidth / 2)); area.closePath(); return area; }
From source file:net.sourceforge.processdash.ev.ui.chart.RangeXYItemRenderer.java
private void drawItemRangeGradient(Graphics2D g2, Line2D line, Paint paint, Stroke stroke, double x2, double y2, double x3, double y3) { Line2D edge1, edge2, mainLine; Polygon fillArea;//from w w w.j a v a 2s . c o m Stroke mainLineStroke, edgeLineStroke; Paint mainLinePaint, edgeLinePaint, fillPaint; double x0 = line.getX1(); double y0 = line.getY1(); double x1 = line.getX2(); double y1 = line.getY2(); mainLine = new Line2D.Double(x0, y0, x1, y1); edge1 = new Line2D.Double(x0, y0, x2, y2); edge2 = new Line2D.Double(x0, y0, x3, y3); fillArea = new Polygon(); fillArea.addPoint((int) Math.round(x0), (int) Math.round(y0)); fillArea.addPoint((int) Math.round(x2), (int) Math.round(y2)); fillArea.addPoint((int) Math.round(x3), (int) Math.round(y3)); mainLinePaint = paint; if (mainLinePaint instanceof Color) { Color c = (Color) mainLinePaint; Color dark = transp(c, calcAlpha(c)); Color light = transp(c, 0.01); edgeLinePaint = fillPaint = c; try { fillPaint = new GradientPaint(gradientStart(x0, y0, x1, y1, x2, y2, x3, y3), light, new Point2D.Double(x1, y1), dark, true); } catch (Exception e) { } } else { edgeLinePaint = fillPaint = mainLinePaint; } if (stroke instanceof BasicStroke) { float lineWidth = ((BasicStroke) stroke).getLineWidth(); edgeLineStroke = new BasicStroke(lineWidth / 4); mainLineStroke = new BasicStroke(lineWidth * 2); } else { mainLineStroke = edgeLineStroke = stroke; } g2.setPaint(fillPaint); g2.fill(fillArea); g2.fill(fillArea); g2.setStroke(edgeLineStroke); g2.setPaint(edgeLinePaint); g2.draw(edge1); g2.draw(edge2); g2.setStroke(mainLineStroke); g2.setPaint(mainLinePaint); g2.draw(mainLine); }