Field Detail

• WIND_EVEN_ODD

  static final int WIND_EVEN_ODD

  The even-odd winding mode: a point is internal to the shape if a ray from the point to infinity (in any direction) crosses an odd number of segments.

  See Also:

  Constant Field Values

• WIND_NON_ZERO

  static final int WIND_NON_ZERO

  The non-zero winding mode: a point is internal to the shape if a ray from the point to infinity (in any direction) crosses a different number of segments headed clockwise than those headed counterclockwise.

  See Also:

  Constant Field Values

• SEG_MOVETO

  static final int SEG_MOVETO

  Starts a new subpath. There is no segment from the previous vertex.

  See Also:

  Constant Field Values

• SEG_LINETO

  static final int SEG_LINETO

  The current segment is a line.

  See Also:

  Constant Field Values

• SEG_QUADTO

  static final int SEG_QUADTO

  The current segment is a quadratic parametric curve. It is interpolated as t varies from 0 to 1 over the current point (CP), first control point (P1), and final interpolated control point (P2):

  
   P(t) = B(2,0)*CP + B(2,1)*P1 + B(2,2)*P2
   0 <= t <= 1
   B(n,m) = mth coefficient of nth degree Bernstein polynomial
   = C(n,m) * t^(m) * (1 - t)^(n-m)
   C(n,m) = Combinations of n things, taken m at a time
   = n! / (m! * (n-m)!) 

  See Also:

  Constant Field Values

• SEG_CUBICTO

  static final int SEG_CUBICTO

  The current segment is a cubic parametric curve (more commonly known as a Bezier curve). It is interpolated as t varies from 0 to 1 over the current point (CP), first control point (P1), the second control point (P2), and final interpolated control point (P3):

   P(t) = B(3,0)*CP + B(3,1)*P1 + B(3,2)*P2 + B(3,3)*P3
   0 <= t <= 1
   B(n,m) = mth coefficient of nth degree Bernstein polynomial
   = C(n,m) * t^(m) * (1 - t)^(n-m)
   C(n,m) = Combinations of n things, taken m at a time
   = n! / (m! * (n-m)!)

  See Also:

  Constant Field Values

• SEG_CLOSE

  static final int SEG_CLOSE

  The current segment closes a loop by an implicit line to the previous SEG_MOVETO coordinate.

  See Also:

  Constant Field Values

Method Detail

• getWindingRule

  int getWindingRule()

  Returns the winding rule to determine which points are inside this path.

  Returns:

  the winding rule. (WIND_EVEN_ODD or WIND_NON_ZERO).

• isDone

  boolean isDone()

  Tests if the iterator is exhausted. If this returns true, currentSegment and next may throw a RuntimeException (although this is not required).

  Returns:

  true if the iteration is complete

• next

  void next()

  Advance to the next segment in the iteration. It is not specified what this does if called when isDone() returns true.

• currentSegment

  int currentSegment(float[] coords)

  Returns the coordinates of the next point(s), as well as the type of line segment. The input array must be at least a float[6], to accommodate up to three (x,y) point pairs (although if you know the iterator is flat, you can probably get by with a float[2]). If the returned type is SEG_MOVETO or SEG_LINETO, the first point in the array is modified; if the returned type is SEG_QUADTO, the first two points are modified; if the returned type is SEG_CUBICTO, all three points are modified; and if the returned type is SEG_CLOSE, the array is untouched.

  Parameters:

  coords - the array to place the point coordinates in

  Returns:

  the segment type. One of (SEG_MOVETO, SEG_LINETO, SEG_QUADTO, SEG_CUBICTO, SEG_CLOSE).

• currentSegment

  int currentSegment(double[] coords)

  Returns the coordinates of the next point(s), as well as the type of line segment. The input array must be at least a double[6], to accommodate up to three (x,y) point pairs (although if you know the iterator is flat, you can probably get by with a double[2]). If the returned type is SEG_MOVETO or SEG_LINETO, the first point in the array is modified; if the returned type is SEG_QUADTO, the first two points are modified; if the returned type is SEG_CUBICTO, all three points are modified; and if the returned type is SEG_CLOSE, the array is untouched.

  Parameters:

  coords - the array to place the point coordinates in

  Returns:

  the segment type. One of (SEG_MOVETO, SEG_LINETO, SEG_QUADTO, SEG_CUBICTO, SEG_CLOSE).