root / trunk / libraries / libAnimation2D / src / main / java / com / iver / cit / gvsig / animation / interpolator / Interpolator2D.java @ 25868
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1 | 23597 | afraile | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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2 | *
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3 | * Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.
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4 | *
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5 | * This program is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU General Public License
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7 | * as published by the Free Software Foundation; either version 2
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8 | * of the License, or (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program; if not, write to the Free Software
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17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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18 | */
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19 | |||
20 | 20149 | jcampos | package com.iver.cit.gvsig.animation.interpolator; |
21 | |||
22 | import java.awt.geom.Rectangle2D; |
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23 | import java.util.List; |
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24 | |||
25 | import com.iver.cit.gvsig.animation.keyFrame.KeyFrame2D; |
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26 | import com.iver.cit.gvsig.animation.keyframe.IKeyFrame; |
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27 | import com.iver.cit.gvsig.animation.keyframe.interpolator.IInterpolator; |
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28 | import com.iver.cit.gvsig.animation.keyframe.interpolator.IInterpolatorTimeFuntion; |
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29 | import com.iver.cit.gvsig.project.ProjectExtent; |
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30 | import com.iver.utiles.XMLEntity; |
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31 | |||
32 | 25868 | afraile | /**
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33 | * @author ?ngel Fraile Gri??n e-mail: angel.fraile@iver.es
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34 | * @since 1.1
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35 | *
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36 | */
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37 | |||
38 | 20149 | jcampos | public class Interpolator2D implements IInterpolator { |
39 | |||
40 | private String description = "Interpolaci?n basada en encuadres"; |
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41 | private String name = "Interpolator2D"; |
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42 | |||
43 | private IInterpolatorTimeFuntion funtion;
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44 | |||
45 | 25868 | afraile | /**
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46 | * Calculating the new positions in the movement animation
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47 | */
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48 | 23597 | afraile | public IKeyFrame interpolate(List<IKeyFrame> kfList, int index, double time) { |
49 | 20149 | jcampos | KeyFrame2D KF = new KeyFrame2D();
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50 | |||
51 | if (kfList == null) |
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52 | return null; |
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53 | |||
54 | |||
55 | switch (kfList.size()) {
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56 | // this case when there are only has 2 keyframes
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57 | case 2: |
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58 | // getting the keyframes
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59 | KeyFrame2D kf1 = (KeyFrame2D) kfList.get(0);
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60 | KeyFrame2D kf2 = (KeyFrame2D) kfList.get(1);
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61 | |||
62 | if (index == 1) { |
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63 | KeyFrame2D kaux = kf1; |
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64 | kf1 = kf2; |
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65 | kf2 = kaux; |
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66 | } |
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67 | |||
68 | ProjectExtent vp1 = (ProjectExtent) kf1.getAnimatedObject(); |
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69 | ProjectExtent vp2 = (ProjectExtent) kf2.getAnimatedObject(); |
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70 | |||
71 | |||
72 | double min1 = vp1.getExtent().getMinX();
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73 | double time1 = kf1.getTime();
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74 | double min2 = vp2.getExtent().getMinX();
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75 | double time2 = kf2.getTime();
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76 | double left = linearInterpolate(min1, min2, time1, time2, time);
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77 | min1 = vp1.getExtent().getMinY(); |
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78 | min2 = vp2.getExtent().getMinY(); |
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79 | double top = linearInterpolate(min1, min2, time1, time2, time);
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80 | min1 = vp1.getExtent().getWidth(); |
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81 | min2 = vp2.getExtent().getWidth(); |
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82 | double right = linearInterpolate(min1, min2, time1, time2, time);
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83 | min1 = vp1.getExtent().getHeight(); |
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84 | min2 = vp2.getExtent().getHeight(); |
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85 | double bottom = linearInterpolate(min1, min2, time1, time2, time);
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86 | |||
87 | Rectangle2D newExtent = new Rectangle2D.Double(left, top, right, |
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88 | bottom); |
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89 | ProjectExtent pe = new ProjectExtent();
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90 | pe.setExtent(newExtent); |
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91 | KF.setAnimatedObject(pe); |
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92 | break;
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93 | } |
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94 | |||
95 | return KF;
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96 | } |
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97 | |||
98 | 25868 | afraile | /**
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99 | * Return a value interpolate
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100 | *
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101 | * @param minX: initial x value in the 2D extent
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102 | * @param minX2: final x value in the 2D extent
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103 | * @param timePos: initial time value
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104 | * @param timePos2: final time value
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105 | * @param time: total time
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106 | * @return
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107 | */
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108 | 20149 | jcampos | private double linearInterpolate(double minX, double minX2, double timePos, |
109 | double timePos2, double time) { |
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110 | // P1 + (P2-P1)*((t-t1)/(t2-t1))
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111 | return (minX + (minX2 - minX)
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112 | * ((time - timePos) / (timePos2 - timePos))); |
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113 | } |
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114 | |||
115 | public IInterpolatorTimeFuntion getFuntion() {
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116 | return this.funtion; |
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117 | } |
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118 | |||
119 | public void setFuntion(IInterpolatorTimeFuntion funtion) { |
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120 | this.funtion = funtion;
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121 | } |
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122 | |||
123 | public String getClassName() { |
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124 | return this.getClass().getName(); |
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125 | } |
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126 | |||
127 | public String getDescription() { |
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128 | return this.description; |
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129 | } |
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130 | |||
131 | public String getName() { |
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132 | return this.name; |
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133 | } |
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134 | |||
135 | public XMLEntity getXMLEntity() {
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136 | XMLEntity xml = new XMLEntity();
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137 | xml.putProperty("className", this.getClassName()); |
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138 | xml.putProperty("description", this.description); |
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139 | return xml;
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140 | } |
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141 | |||
142 | public void setXMLEntity(XMLEntity xml) { |
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143 | if (xml.contains("description")) |
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144 | this.description = xml.getStringProperty("description"); |
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145 | |||
146 | } |
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147 | } |