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I'm using polygons for collision detection. Here is the code:

poly = new Polygon(verticies);
poly.setOrigin(100,100);
poly.setRotation(45);
renderer.setColor(Color.GREEN);
renderer.begin(ShapeType.Line);
renderer.identity();
renderer.translate(poly.getOriginX(), poly.getOriginY(), 0);
renderer.polygon(poly.getTransformedVertices());
renderer.translate(-poly.getOriginX(), -poly.getOriginY(), 0);
renderer.end();

Result, polygon is rotated, but it moves to the right. Here is the picture for 0, 30, 45, 60 , 90 degrees (from left to right). What am I doing wrong?

Polygon rotation

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    \$\begingroup\$ Try playing with setOrigin. It may just have an incorrect offset. \$\endgroup\$
    – newton1212
    Jun 24 '15 at 18:12
  • 1
    \$\begingroup\$ You need to rotate about the shape center and now you're rotating about (100; 100) point. \$\endgroup\$
    – nikoliazekter
    Jun 24 '15 at 18:16

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