/**
  * Writes the <code>shape</code>, <code>coords</code>, <code>href</code>,
  * <code>nohref</code> Attribute for the specified figure and shape.
  *
  * @return Returns true, if the polygon is inside of the image bounds.
  */
 private boolean writePolyAttributes(IXMLElement elem, SVGFigure f, Shape shape) {
     AffineTransform t = TRANSFORM.getClone(f);
     if (t == null) {
         t = drawingTransform;
     } else {
         t.preConcatenate(drawingTransform);
     }
     
     StringBuilder buf = new StringBuilder();
     float[] coords = new float[6];
     GeneralPath path = new GeneralPath();
     for (PathIterator i = shape.getPathIterator(t, 1.5f);
     ! i.isDone(); i.next()) {
         switch (i.currentSegment(coords)) {
             case PathIterator.SEG_MOVETO :
                 if (buf.length() != 0) {
                     throw new IllegalArgumentException("Illegal shape "+shape);
                 }
                 if (buf.length() != 0) {
                     buf.append(',');
                 }
                 buf.append((int) coords[0]);
                 buf.append(',');
                 buf.append((int) coords[1]);
                 path.moveTo(coords[0], coords[1]);
                 break;
             case PathIterator.SEG_LINETO :
                 if (buf.length() != 0) {
                     buf.append(',');
                 }
                 buf.append((int) coords[0]);
                 buf.append(',');
                 buf.append((int) coords[1]);
                 path.lineTo(coords[0], coords[1]);
                 break;
             case PathIterator.SEG_CLOSE :
                 path.closePath();
                 break;
             default :
                 throw new InternalError("Illegal segment type "+i.currentSegment(coords));
         }
     }
     elem.setAttribute("shape", "poly");
     elem.setAttribute("coords", buf.toString());
     writeHrefAttribute(elem, f);
     return path.intersects(new Rectangle2D.Float(bounds.x, bounds.y, bounds.width, bounds.height));
 }
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  /**
   * Build a shape for the entire subtree by joining together the shapes for each of its edges.
   * Vertices included since needed for FullTextPanel.
   */
  public Shape constructInternalShape(DiagramBase diagram, boolean includeVertices) {
    GeneralPath shape = new GeneralPath();
    Enumeration edges = m_edgeList.elements();
    while (edges.hasMoreElements()) {
      TreeEdge edge = (TreeEdge) edges.nextElement();
      Shape edgeShape = edge.getSchemeShape(diagram);
      PathIterator path = edgeShape.getPathIterator(null);
      shape.append(path, false);

      if (includeVertices) {
        Shape vertexShape;
        if (!edge.getSourceVertex().isVirtual()) {
          vertexShape = edge.getSourceVertex().getShape(diagram);
          path = vertexShape.getPathIterator(null);
          shape.append(path, false);
        }
        if (!edge.getDestVertex().isVirtual()) {
          vertexShape = edge.getDestVertex().getShape(diagram);
          path = vertexShape.getPathIterator(null);
          shape.append(path, false);
        }
      }
    }
    BasicStroke stroke =
        new BasicStroke(
            diagram.getSubtreeLineWidth() - DiagramBase.EDGE_OUTLINE_WIDTH + 1,
            BasicStroke.CAP_ROUND,
            BasicStroke.JOIN_MITER);
    internalShapeTable.put(diagram, stroke.createStrokedShape(shape));
    return (Shape) internalShapeTable.get(diagram);
  }
 /**
  * Convert an AWT Shape to an SWT Path.
  *
  * @param shape
  * @return the SWT Path or <code>null</code> if <code>shape == null</code>
  */
 private Path convertToPath(Shape shape) {
   if (shape == null) {
     return null;
   }
   Path path = new Path(_gc.getDevice());
   PathIterator iter = shape.getPathIterator(null);
   float[] coords = new float[6];
   while (!iter.isDone()) {
     int op = iter.currentSegment(coords);
     switch (op) {
       case PathIterator.SEG_MOVETO:
         path.moveTo(coords[0], coords[1]);
         break;
       case PathIterator.SEG_LINETO:
         path.lineTo(coords[0], coords[1]);
         break;
       case PathIterator.SEG_QUADTO:
         path.quadTo(coords[0], coords[1], coords[2], coords[3]);
         break;
       case PathIterator.SEG_CUBICTO:
         path.cubicTo(coords[0], coords[1], coords[2], coords[3], coords[4], coords[5]);
         break;
       case PathIterator.SEG_CLOSE:
         path.close();
         break;
     }
     iter.next();
   }
   return path;
 }
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 /** Build a shape for the entire subtree by joining together the shapes for each of its edges. */
 public Shape constructShape(DiagramBase diagram) {
   GeneralPath shape = new GeneralPath();
   Enumeration edges = m_edgeList.elements();
   while (edges.hasMoreElements()) {
     TreeEdge edge = (TreeEdge) edges.nextElement();
     if (!edge.visible) {
       continue;
     }
     Shape edgeShape = edge.getSchemeShape(diagram);
     PathIterator path = edgeShape.getPathIterator(null);
     shape.append(path, false);
   }
   BasicStroke stroke =
       new BasicStroke(
           diagram.getSubtreeLineWidth(), BasicStroke.CAP_ROUND, BasicStroke.JOIN_MITER);
   shapeTable.put(diagram, stroke.createStrokedShape(shape));
   return (Shape) shapeTable.get(diagram);
 }
Exemple #5
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 /** Build a shape for the entire subtree by joining together the shapes for each of its edges. */
 public Shape constructFullTextShape(DiagramBase diagram) {
   GeneralPath shape = new GeneralPath();
   Enumeration edges = m_edgeList.elements();
   while (edges.hasMoreElements()) {
     TreeEdge edge = (TreeEdge) edges.nextElement();
     if (!edge.visible) {
       continue;
     }
     Shape edgeShape = edge.getSchemeShape(diagram);
     PathIterator path = edgeShape.getPathIterator(null);
     shape.append(path, false);
     TreeVertex vertex = edge.getSourceVertex();
     if (!vertex.isVirtual()) {
       shape.append(vertex.getShape(diagram).getPathIterator(null), false);
     }
     vertex = edge.getDestVertex();
     if (!vertex.isVirtual()) {
       shape.append(vertex.getShape(diagram).getPathIterator(null), false);
     }
   }
   BasicStroke stroke = new BasicStroke(20, BasicStroke.CAP_ROUND, BasicStroke.JOIN_MITER);
   shapeTable.put(diagram, stroke.createStrokedShape(shape));
   return (Shape) shapeTable.get(diagram);
 }
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  protected int convertPathData(Shape s, AffineTransform at) {
    PathIterator pi = s.getPathIterator(at);

    double[] coords = new double[6];
    double currX = 0;
    double currY = 0;

    while (!pi.isDone()) {
      int curOp = pi.currentSegment(coords);

      int pointIndex;
      switch (curOp) {
        case PathIterator.SEG_MOVETO:
          ops.addByte(CAIRO_PATH_OP_MOVE_TO);
          pointIndex = points.getNextIndex();
          points.setX(pointIndex, DoubleToCairoFixed(coords[0]));
          points.setY(pointIndex, DoubleToCairoFixed(coords[1]));
          currX = coords[0];
          currY = coords[1];
          break;

        case PathIterator.SEG_LINETO:
          ops.addByte(CAIRO_PATH_OP_LINE_TO);
          pointIndex = points.getNextIndex();
          points.setX(pointIndex, DoubleToCairoFixed(coords[0]));
          points.setY(pointIndex, DoubleToCairoFixed(coords[1]));
          currX = coords[0];
          currY = coords[1];
          break;

          /** q0 = p0 q1 = (p0+2*p1)/3 q2 = (p2+2*p1)/3 q3 = p2 */
        case PathIterator.SEG_QUADTO:
          double x1 = coords[0];
          double y1 = coords[1];
          double x2, y2;
          double x3 = coords[2];
          double y3 = coords[3];

          x2 = x1 + (x3 - x1) / 3;
          y2 = y1 + (y3 - y1) / 3;
          x1 = currX + 2 * (x1 - currX) / 3;
          y1 = currY + 2 * (y1 - currY) / 3;

          ops.addByte(CAIRO_PATH_OP_CURVE_TO);
          pointIndex = points.getNextIndex();
          points.setX(pointIndex, DoubleToCairoFixed(x1));
          points.setY(pointIndex, DoubleToCairoFixed(y1));
          pointIndex = points.getNextIndex();
          points.setX(pointIndex, DoubleToCairoFixed(x2));
          points.setY(pointIndex, DoubleToCairoFixed(y2));
          pointIndex = points.getNextIndex();
          points.setX(pointIndex, DoubleToCairoFixed(x3));
          points.setY(pointIndex, DoubleToCairoFixed(y3));
          currX = x3;
          currY = y3;
          break;

        case PathIterator.SEG_CUBICTO:
          ops.addByte(CAIRO_PATH_OP_CURVE_TO);
          pointIndex = points.getNextIndex();
          points.setX(pointIndex, DoubleToCairoFixed(coords[0]));
          points.setY(pointIndex, DoubleToCairoFixed(coords[1]));
          pointIndex = points.getNextIndex();
          points.setX(pointIndex, DoubleToCairoFixed(coords[2]));
          points.setY(pointIndex, DoubleToCairoFixed(coords[3]));
          pointIndex = points.getNextIndex();
          points.setX(pointIndex, DoubleToCairoFixed(coords[4]));
          points.setY(pointIndex, DoubleToCairoFixed(coords[5]));
          currX = coords[4];
          currY = coords[5];
          break;

        case PathIterator.SEG_CLOSE:
          ops.addByte(CAIRO_PATH_OP_CLOSE_PATH);
          break;
      }

      pi.next();
    }

    return pi.getWindingRule();
  }
Exemple #7
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    public Shape createStrokedShape(Shape shape) {
      GeneralPath result = new GeneralPath();
      PathIterator it = new FlatteningPathIterator(shape.getPathIterator(null), FLATNESS);
      float points[] = new float[6];
      float moveX = 0, moveY = 0;
      float lastX = 0, lastY = 0;
      float thisX = 0, thisY = 0;
      int type = 0;
      boolean first = false;
      float next = 0;
      int phase = 0;

      float factor = 1;

      while (!it.isDone()) {
        type = it.currentSegment(points);
        switch (type) {
          case PathIterator.SEG_MOVETO:
            moveX = lastX = points[0];
            moveY = lastY = points[1];
            result.moveTo(moveX, moveY);
            first = true;
            next = wavelength / 2;
            break;

          case PathIterator.SEG_CLOSE:
            points[0] = moveX;
            points[1] = moveY;
            // Fall into....

          case PathIterator.SEG_LINETO:
            thisX = points[0];
            thisY = points[1];
            float dx = thisX - lastX;
            float dy = thisY - lastY;
            float distance = (float) Math.sqrt(dx * dx + dy * dy);
            if (distance >= next) {
              float r = 1.0f / distance;
              float angle = (float) Math.atan2(dy, dx);
              while (distance >= next) {
                float x = lastX + next * dx * r;
                float y = lastY + next * dy * r;
                float tx = amplitude * dy * r;
                float ty = amplitude * dx * r;
                if ((phase & 1) == 0) result.lineTo(x + amplitude * dy * r, y - amplitude * dx * r);
                else result.lineTo(x - amplitude * dy * r, y + amplitude * dx * r);
                next += wavelength;
                phase++;
              }
            }
            next -= distance;
            first = false;
            lastX = thisX;
            lastY = thisY;
            if (type == PathIterator.SEG_CLOSE) result.closePath();
            break;
        }
        it.next();
      }

      // return stroke.createStrokedShape( result );
      return result;
    }