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1 | /* | |
2 | * Copyright (c) 2003, the JUNG Project and the Regents of the University of | |
3 | * California All rights reserved. | |
4 | * | |
5 | * This software is open-source under the BSD license; see either "license.txt" | |
6 | * or http://jung.sourceforge.net/license.txt for a description. | |
7 | * | |
8 | */ | |
9 | package edu.uci.ics.jung.visualization.control; | |
10 | ||
11 | import java.awt.geom.Point2D; | |
12 | ||
13 | import edu.uci.ics.jung.visualization.VisualizationViewer; | |
14 | import edu.uci.ics.jung.visualization.transform.MutableTransformer; | |
15 | ||
16 | /** | |
17 | * scales to the absolute value passed as an argument. | |
18 | * It first resets the scaling transformers, then uses | |
19 | * the relative CrossoverScalingControl to achieve the | |
20 | * abolute value. | |
21 | * | |
22 | * @author Tom Nelson - RABA Technologies | |
23 | * | |
24 | */ | |
25 | 0 | public class AbsoluteCrossoverScalingControl extends CrossoverScalingControl |
26 | implements ScalingControl { | |
27 | ||
28 | /** | |
29 | * scale to the absolute value passed as 'amount'. | |
30 | * | |
31 | */ | |
32 | public void scale(VisualizationViewer vv, float amount, Point2D at) { | |
33 | 0 | MutableTransformer layoutTransformer = vv.getLayoutTransformer(); |
34 | 0 | MutableTransformer viewTransformer = vv.getViewTransformer(); |
35 | 0 | double modelScale = layoutTransformer.getScale(); |
36 | 0 | double viewScale = viewTransformer.getScale(); |
37 | 0 | double inverseModelScale = Math.sqrt(crossover)/modelScale; |
38 | 0 | double inverseViewScale = Math.sqrt(crossover)/viewScale; |
39 | ||
40 | 0 | Point2D transformedAt = vv.inverseViewTransform(at); |
41 | ||
42 | // return the transformers to 1.0 | |
43 | 0 | layoutTransformer.scale(inverseModelScale, inverseModelScale, transformedAt); |
44 | 0 | viewTransformer.scale(inverseViewScale, inverseViewScale, at); |
45 | ||
46 | 0 | super.scale(vv, amount, at); |
47 | 0 | } |
48 | } |
this report was generated by version 1.0.5 of jcoverage. |
copyright © 2003, jcoverage ltd. all rights reserved. |