| /* |
| * Copyright (c) 1998, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.awt.geom; |
| |
| final class Edge { |
| static final int INIT_PARTS = 4; |
| static final int GROW_PARTS = 10; |
| |
| Curve curve; |
| int ctag; |
| int etag; |
| double activey; |
| int equivalence; |
| |
| public Edge(Curve c, int ctag) { |
| this(c, ctag, AreaOp.ETAG_IGNORE); |
| } |
| |
| public Edge(Curve c, int ctag, int etag) { |
| this.curve = c; |
| this.ctag = ctag; |
| this.etag = etag; |
| } |
| |
| public Curve getCurve() { |
| return curve; |
| } |
| |
| public int getCurveTag() { |
| return ctag; |
| } |
| |
| public int getEdgeTag() { |
| return etag; |
| } |
| |
| public void setEdgeTag(int etag) { |
| this.etag = etag; |
| } |
| |
| public int getEquivalence() { |
| return equivalence; |
| } |
| |
| public void setEquivalence(int eq) { |
| equivalence = eq; |
| } |
| |
| private Edge lastEdge; |
| private int lastResult; |
| private double lastLimit; |
| |
| public int compareTo(Edge other, double yrange[]) { |
| if (other == lastEdge && yrange[0] < lastLimit) { |
| if (yrange[1] > lastLimit) { |
| yrange[1] = lastLimit; |
| } |
| return lastResult; |
| } |
| if (this == other.lastEdge && yrange[0] < other.lastLimit) { |
| if (yrange[1] > other.lastLimit) { |
| yrange[1] = other.lastLimit; |
| } |
| return 0-other.lastResult; |
| } |
| //long start = System.currentTimeMillis(); |
| int ret = curve.compareTo(other.curve, yrange); |
| //long end = System.currentTimeMillis(); |
| /* |
| System.out.println("compare: "+ |
| ((System.identityHashCode(this) < |
| System.identityHashCode(other)) |
| ? this+" to "+other |
| : other+" to "+this)+ |
| " == "+ret+" at "+yrange[1]+ |
| " in "+(end-start)+"ms"); |
| */ |
| lastEdge = other; |
| lastLimit = yrange[1]; |
| lastResult = ret; |
| return ret; |
| } |
| |
| public void record(double yend, int etag) { |
| this.activey = yend; |
| this.etag = etag; |
| } |
| |
| public boolean isActiveFor(double y, int etag) { |
| return (this.etag == etag && this.activey >= y); |
| } |
| |
| public String toString() { |
| return ("Edge["+curve+ |
| ", "+ |
| (ctag == AreaOp.CTAG_LEFT ? "L" : "R")+ |
| ", "+ |
| (etag == AreaOp.ETAG_ENTER ? "I" : |
| (etag == AreaOp.ETAG_EXIT ? "O" : "N"))+ |
| "]"); |
| } |
| } |