projection2d
The boolean operator <projection2d> specifies the projection of a 3d shape into the XY-plane. The result is a new 2d shape.
Example with a rotated cylinder projected into the xy-plane to create a 2d shape. Result extruded slightly for easy visualisation in 3d.
<?xml version="1.0" encoding="utf-8"?>
<xcsg version="1.0">
<metadata>
<software name="angelcad" version="v1.3-02"/>
<model name="projection2d" created="2019-08-18T09:12:39"/>
</metadata>
<linear_extrude dz="0.01">
<projection2d>
<cylinder h="100" r="30" center="false">
<tmatrix>
<trow c0="0.86602540378443871" c1="0" c2="0.49999999999999994" c3="0"/>
<trow c0="0" c1="1" c2="0" c3="0"/>
<trow c0="-0.49999999999999994" c1="0" c2="0.86602540378443871" c3="0"/>
<trow c0="0" c1="0" c2="0" c3="1"/>
</tmatrix>
</cylinder>
</projection2d>
</linear_extrude>
</xcsg>
Original cylinder before projection:
