0N/A/*
2362N/A * Copyright (c) 1997, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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0N/A */
0N/A
0N/Apackage java.awt.geom;
0N/A
0N/Aimport java.util.*;
0N/A
0N/A/**
0N/A * A utility class to iterate over the path segments of a quadratic curve
0N/A * segment through the PathIterator interface.
0N/A *
0N/A * @author Jim Graham
0N/A */
0N/Aclass QuadIterator implements PathIterator {
0N/A QuadCurve2D quad;
0N/A AffineTransform affine;
0N/A int index;
0N/A
0N/A QuadIterator(QuadCurve2D q, AffineTransform at) {
0N/A this.quad = q;
0N/A this.affine = at;
0N/A }
0N/A
0N/A /**
0N/A * Return the winding rule for determining the insideness of the
0N/A * path.
0N/A * @see #WIND_EVEN_ODD
0N/A * @see #WIND_NON_ZERO
0N/A */
0N/A public int getWindingRule() {
0N/A return WIND_NON_ZERO;
0N/A }
0N/A
0N/A /**
0N/A * Tests if there are more points to read.
0N/A * @return true if there are more points to read
0N/A */
0N/A public boolean isDone() {
0N/A return (index > 1);
0N/A }
0N/A
0N/A /**
0N/A * Moves the iterator to the next segment of the path forwards
0N/A * along the primary direction of traversal as long as there are
0N/A * more points in that direction.
0N/A */
0N/A public void next() {
0N/A index++;
0N/A }
0N/A
0N/A /**
0N/A * Returns the coordinates and type of the current path segment in
0N/A * the iteration.
0N/A * The return value is the path segment type:
0N/A * SEG_MOVETO, SEG_LINETO, SEG_QUADTO, SEG_CUBICTO, or SEG_CLOSE.
0N/A * A float array of length 6 must be passed in and may be used to
0N/A * store the coordinates of the point(s).
0N/A * Each point is stored as a pair of float x,y coordinates.
0N/A * SEG_MOVETO and SEG_LINETO types will return one point,
0N/A * SEG_QUADTO will return two points,
0N/A * SEG_CUBICTO will return 3 points
0N/A * and SEG_CLOSE will not return any points.
0N/A * @see #SEG_MOVETO
0N/A * @see #SEG_LINETO
0N/A * @see #SEG_QUADTO
0N/A * @see #SEG_CUBICTO
0N/A * @see #SEG_CLOSE
0N/A */
0N/A public int currentSegment(float[] coords) {
0N/A if (isDone()) {
0N/A throw new NoSuchElementException("quad iterator iterator out of bounds");
0N/A }
0N/A int type;
0N/A if (index == 0) {
0N/A coords[0] = (float) quad.getX1();
0N/A coords[1] = (float) quad.getY1();
0N/A type = SEG_MOVETO;
0N/A } else {
0N/A coords[0] = (float) quad.getCtrlX();
0N/A coords[1] = (float) quad.getCtrlY();
0N/A coords[2] = (float) quad.getX2();
0N/A coords[3] = (float) quad.getY2();
0N/A type = SEG_QUADTO;
0N/A }
0N/A if (affine != null) {
0N/A affine.transform(coords, 0, coords, 0, index == 0 ? 1 : 2);
0N/A }
0N/A return type;
0N/A }
0N/A
0N/A /**
0N/A * Returns the coordinates and type of the current path segment in
0N/A * the iteration.
0N/A * The return value is the path segment type:
0N/A * SEG_MOVETO, SEG_LINETO, SEG_QUADTO, SEG_CUBICTO, or SEG_CLOSE.
0N/A * A double array of length 6 must be passed in and may be used to
0N/A * store the coordinates of the point(s).
0N/A * Each point is stored as a pair of double x,y coordinates.
0N/A * SEG_MOVETO and SEG_LINETO types will return one point,
0N/A * SEG_QUADTO will return two points,
0N/A * SEG_CUBICTO will return 3 points
0N/A * and SEG_CLOSE will not return any points.
0N/A * @see #SEG_MOVETO
0N/A * @see #SEG_LINETO
0N/A * @see #SEG_QUADTO
0N/A * @see #SEG_CUBICTO
0N/A * @see #SEG_CLOSE
0N/A */
0N/A public int currentSegment(double[] coords) {
0N/A if (isDone()) {
0N/A throw new NoSuchElementException("quad iterator iterator out of bounds");
0N/A }
0N/A int type;
0N/A if (index == 0) {
0N/A coords[0] = quad.getX1();
0N/A coords[1] = quad.getY1();
0N/A type = SEG_MOVETO;
0N/A } else {
0N/A coords[0] = quad.getCtrlX();
0N/A coords[1] = quad.getCtrlY();
0N/A coords[2] = quad.getX2();
0N/A coords[3] = quad.getY2();
0N/A type = SEG_QUADTO;
0N/A }
0N/A if (affine != null) {
0N/A affine.transform(coords, 0, coords, 0, index == 0 ? 1 : 2);
0N/A }
0N/A return type;
0N/A }
0N/A}