001: /*
002: The contents of this file are subject to the Common Public Attribution License
003: Version 1.0 (the "License"); you may not use this file except in compliance with
004: the License. You may obtain a copy of the License at
005: http://www.projity.com/license . The License is based on the Mozilla Public
006: License Version 1.1 but Sections 14 and 15 have been added to cover use of
007: software over a computer network and provide for limited attribution for the
008: Original Developer. In addition, Exhibit A has been modified to be consistent
009: with Exhibit B.
010:
011: Software distributed under the License is distributed on an "AS IS" basis,
012: WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the
013: specific language governing rights and limitations under the License. The
014: Original Code is OpenProj. The Original Developer is the Initial Developer and
015: is Projity, Inc. All portions of the code written by Projity are Copyright (c)
016: 2006, 2007. All Rights Reserved. Contributors Projity, Inc.
017:
018: Alternatively, the contents of this file may be used under the terms of the
019: Projity End-User License Agreeement (the Projity License), in which case the
020: provisions of the Projity License are applicable instead of those above. If you
021: wish to allow use of your version of this file only under the terms of the
022: Projity License and not to allow others to use your version of this file under
023: the CPAL, indicate your decision by deleting the provisions above and replace
024: them with the notice and other provisions required by the Projity License. If
025: you do not delete the provisions above, a recipient may use your version of this
026: file under either the CPAL or the Projity License.
027:
028: [NOTE: The text of this license may differ slightly from the text of the notices
029: in Exhibits A and B of the license at http://www.projity.com/license. You should
030: use the latest text at http://www.projity.com/license for your modifications.
031: You may not remove this license text from the source files.]
032:
033: Attribution Information: Attribution Copyright Notice: Copyright © 2006, 2007
034: Projity, Inc. Attribution Phrase (not exceeding 10 words): Powered by OpenProj,
035: an open source solution from Projity. Attribution URL: http://www.projity.com
036: Graphic Image as provided in the Covered Code as file: openproj_logo.png with
037: alternatives listed on http://www.projity.com/logo
038:
039: Display of Attribution Information is required in Larger Works which are defined
040: in the CPAL as a work which combines Covered Code or portions thereof with code
041: not governed by the terms of the CPAL. However, in addition to the other notice
042: obligations, all copies of the Covered Code in Executable and Source Code form
043: distributed must, as a form of attribution of the original author, include on
044: each user interface screen the "OpenProj" logo visible to all users. The
045: OpenProj logo should be located horizontally aligned with the menu bar and left
046: justified on the top left of the screen adjacent to the File menu. The logo
047: must be at least 100 x 25 pixels. When users click on the "OpenProj" logo it
048: must direct them back to http://www.projity.com.
049: */
050: package com.projity.pm.graphic.graph;
051:
052: import java.awt.geom.GeneralPath;
053:
054: /**
055: *
056: */
057: public abstract class LinkRouting {
058:
059: protected float lx0, lx1, lx2, ly0, ly1, ly2, fx0, fx1, fy0, fy1;
060: protected int nbPoints;
061: protected GeneralPath path;
062:
063: protected void addLinkPoint(double x, double y) {
064: addLinkPoint(x, y, true);
065: }
066:
067: protected void addLinkPoint(double x, double y, boolean line) {
068: lx2 = lx1;
069: ly2 = ly1;
070: lx1 = lx0;
071: ly1 = ly0;
072: lx0 = (int) Math.round(x);
073: ly0 = (int) Math.round(y);
074: if (nbPoints == 0) {
075: fx0 = lx0;
076: fy0 = ly0;
077: path.moveTo(lx0, ly0);
078: } else {
079: if (nbPoints == 1) {
080: fx1 = lx0;
081: fy1 = ly0;
082: }
083: if (line)
084: path.lineTo(lx0, ly0);
085: }
086: nbPoints++;
087: }
088:
089: protected void resetLinkPoints() {
090: nbPoints = 0;
091: lx0 = -1;
092: lx1 = -1;
093: ly0 = -1;
094: ly1 = -1;
095: fx0 = -1;
096: fx1 = -1;
097: fy0 = -1;
098: fy1 = -1;
099: path.reset();
100: }
101:
102: protected void line() {
103: path.lineTo(lx0, ly0);
104: }
105:
106: protected void quad() {
107: path.quadTo(lx1, ly1, lx0, ly0);
108: }
109:
110: protected void curve() {
111: path.curveTo(lx2, ly2, lx1, ly1, lx0, ly0);
112: }
113:
114: //public abstract void routePath(GeneralPath path,double x0,double y0,double x1,double y1,double[] extraPoints, int type);
115:
116: public float getFirstX() {
117: return fx0;
118: }
119:
120: public float getFirstY() {
121: return fy0;
122: }
123:
124: public float getLastX() {
125: return lx0;
126: }
127:
128: public float getLastY() {
129: return ly0;
130: }
131:
132: public double getFirstAngle() {
133: return Math.atan2(fy1 - fy0, fx0 - fx1);
134: }
135:
136: public double getLastAngle() {
137: return Math.atan2(ly1 - ly0, lx0 - lx1);
138: }
139: }
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