1<?xml version="1.0" encoding="UTF-8"?>
2<!DOCTYPE StepCoreXML>
3<world xmlns="http://edu.kde.org/step/StepCoreXML" version="1.0" id="1">
4    <name>world1</name>
5    <color>#ffffffff</color>
6    <time>0</time>
7    <timeScale>1</timeScale>
8    <errorsCalculation>false</errorsCalculation>
9
10    <item class="Particle" id="2">
11        <name>particle1</name>
12        <color>#ff000000</color>
13        <position>(1.61,-1.91)</position>
14        <velocity>(1,0)</velocity>
15        <mass>1</mass>
16    </item>
17
18    <item class="Particle" id="3">
19        <name>particle2</name>
20        <color>#ff000000</color>
21        <position>(1.61,-2.41)</position>
22        <velocity>(1,0)</velocity>
23        <mass>1</mass>
24    </item>
25
26    <item class="Spring" id="4">
27        <name>spring1</name>
28        <color>#ff00ff00</color>
29        <restLength>3</restLength>
30        <stiffness>2.25</stiffness>
31        <damping>0</damping>
32        <body1>0</body1>
33        <body2>2</body2>
34        <localPosition1>(-1.39,-1.91)</localPosition1>
35        <localPosition2>(0,0)</localPosition2>
36    </item>
37
38    <item class="Spring" id="5">
39        <name>spring2</name>
40        <color>#ff00ff00</color>
41        <restLength>3</restLength>
42        <stiffness>1</stiffness>
43        <damping>0</damping>
44        <body1>0</body1>
45        <body2>3</body2>
46        <localPosition1>(-1.39,-2.41)</localPosition1>
47        <localPosition2>(0,0)</localPosition2>
48    </item>
49
50    <item class="Graph" id="6">
51        <name>graph1</name>
52        <color>#ff000000</color>
53        <position>(-0.961717,0.529527)</position>
54        <size>(300,300)</size>
55        <objectX>2</objectX>
56        <propertyX>position</propertyX>
57        <indexX>0</indexX>
58        <objectY>3</objectY>
59        <propertyY>position</propertyY>
60        <indexY>0</indexY>
61        <autoLimitsX>true</autoLimitsX>
62        <autoLimitsY>true</autoLimitsY>
63        <limitsX>(0,1)</limitsX>
64        <limitsY>(0,1)</limitsY>
65        <showPoints>false</showPoints>
66        <showLines>true</showLines>
67        <points></points>
68    </item>
69
70    <item class="Controller" id="7">
71        <name>controller1</name>
72        <color>#ff000000</color>
73        <position>(1.53387,0.223087)</position>
74        <size>(200,60)</size>
75        <object>4</object>
76        <property>stiffness</property>
77        <index>-1</index>
78        <limits>(0.1,10)</limits>
79        <increaseShortcut></increaseShortcut>
80        <decreaseShortcut></decreaseShortcut>
81        <increment>0.1</increment>
82    </item>
83
84    <item class="Note" id="8">
85        <name>note1</name>
86        <color>#ff000000</color>
87        <position>(-0.509559,1.56896)</position>
88        <size>(200,100)</size>
89        <text>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
90&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
91p, li { white-space: pre-wrap; }
92&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Sans Serif'; font-size:10pt; font-weight:400; font-style:normal;&quot;&gt;
93&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;Lissajous curve&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</text>
94
95    </item>
96
97    <item class="Note" id="9">
98        <name>note2</name>
99        <color>#ff000000</color>
100        <position>(1.67474,0.832858)</position>
101        <size>(250,100)</size>
102        <text>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
103&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
104p, li { white-space: pre-wrap; }
105&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Sans Serif'; font-size:10pt; font-weight:400; font-style:normal;&quot;&gt;
106&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;Please try to change the stiffness of spring1 and see
107how the curve will change. Try the following values:&lt;br /&gt;1, 2.25, 1.7778, 1.5625, 0.6944&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</text>
108
109    </item>
110
111    <solver class="AdaptiveEulerSolver" id="10">
112        <name>solver1</name>
113        <stepSize>1</stepSize>
114        <toleranceAbs>0.001</toleranceAbs>
115        <toleranceRel>0.001</toleranceRel>
116    </solver>
117
118    <collisionSolver class="GJKCollisionSolver" id="11">
119        <name>collisionSolver1</name>
120        <toleranceAbs>0.001</toleranceAbs>
121    </collisionSolver>
122
123    <constraintSolver class="CGConstraintSolver" id="12">
124        <name>constraintSolver1</name>
125    </constraintSolver>
126
127</world>
128