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