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updated example to demonstrate angle parameter. a half yin-yang/paisley sort of shape

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Hans Loeblich 2015-11-15 10:48:58 -06:00
parent 331c4fb63d
commit 5460351510
1 changed files with 23 additions and 3 deletions
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26
examples/Basics/rotate_extrude.scad
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@ -1,8 +1,8 @@
echo(version=version()); echo(version=version());
// rotate_extrude() always rotates the 2D shape 360 degrees // rotate_extrude() rotates a 2D shape around the Z axis.
// around the Z axis. Note that the 2D shape must be either // Note that the 2D shape must be either completely on the
// completely on the positive or negative side of the X axis. // positive or negative side of the X axis.
color("red") color("red")
rotate_extrude() rotate_extrude()
translate([10, 0]) translate([10, 0])
@ -23,6 +23,26 @@ color("green")
polygon( points=[[0,0],[8,4],[4,8],[4,12],[12,16],[0,20]] ); polygon( points=[[0,0],[8,4],[4,8],[4,12],[12,16],[0,20]] );
// By default rotate_extrude forms a full 360 degree circle,
// but a partial rotation can be performed by using the angle parameter.
// Positive angles create an arc starting from the X axis, going counter-clockwise.
// Negative angles generate an arc in the clockwise direction.
color("magenta")
translate([-40,0]){
rotate_extrude(angle=180)
translate([12.5,0])
square(5);
translate([7.5,0])
rotate_extrude(angle=180)
translate([5,0])
square(5);
translate([-7.5,0])
rotate_extrude(angle=-180)
translate([5,0])
square(5);
}
// Written in 2015 by Torsten Paul <Torsten.Paul@gmx.de> // Written in 2015 by Torsten Paul <Torsten.Paul@gmx.de>
// //
// To the extent possible under law, the author(s) have dedicated all // To the extent possible under law, the author(s) have dedicated all