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<!-- This file is to illustrate the use of the constraint symmetry_by_circle.
It still has not been run on any DGS, so it may contain bugs. -->
<construction xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../xml/intergeo.xsd">
<elements>
<point id="C">
<homogeneous_coordinates>
<double>0.0</double>
<double>0.0</double>
<double>1.0</double>
</homogeneous_coordinates>
</point>
<point id="P">
<homogeneous_coordinates>
<double>0.0</double>
<double>2.0</double>
<double>1.0</double>
</homogeneous_coordinates>
</point>
<point id="A">
<homogeneous_coordinates>
<double>4.0</double>
<double>0.0</double>
<double>1.0</double>
</homogeneous_coordinates>
</point>
<point id="A2">
<homogeneous_coordinates>
<double>1.0</double>
<double>0.0</double>
<double>1.0</double>
</homogeneous_coordinates>
</point>
<circle id="c">
<matrix>
<double>1.0</double>
<double>0.0</double>
<double>0.0</double>
<double>0.0</double>
<double>1.0</double>
<double>0.0</double>
<double>0.0</double>
<double>0.0</double>
<double>-4.0</double>
</matrix>
</circle>
</elements>
<constraints>
<free_point>
<point out="true">C</point>
</free_point>
<free_point>
<point out="true">P</point>
</free_point>
<free_point>
<point out="true">A</point>
</free_point>
<circle_by_center_and_point>
<circle out="true">c</circle>
<point>C</point>
<point>P</point>
</circle_by_center_and_point>
<symmetry_by_circle>
<point out="true">A2</point>
<point>A</point>
<circle>c</circle>
</symmetry_by_circle>
</constraints>
</construction>
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