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ST_Rotate for MySQL Spatial
A version of my Rotate function for SQL Server Spatial and Oracle Spatial is available for MySQL.
Function Declaration
DELIMITER $$ CREATE FUNCTION `ST_Rotate` ( p_geometry geometry, p_X DOUBLE, p_Y DOUBLE, p_rotation DOUBLE, p_round INT ) RETURNS geometry BEGIN -- Processing RETURN geometry; END; DELIMITER ;
Function Testing
SELECT ST_AsText(ST_Rotate(ST_PointFromText('POINT(10 10)',0), 0.0, 0.0, 90, 1)) AS rotatedGeom;
# rotatedGeom
'POINT(-10 10)'
--
SELECT ST_AsText(ST_Rotate(ST_GeomFromText('LINESTRING(0.1 0.2,1.4 45.2)',0),0.0,0.0,125,2)) AS rotatedGeom;
# rotatedGeom
'LINESTRING(-0.14 -0.17,-1.95 -2.4)'
--
SELECT ST_AsText(ST_Rotate(ST_GeomFromText('POLYGON((0 0,10 0,10 10,0 10,0 0))',0),0.0,0.0,300,2)) AS rotatedGeom;
# rotatedGeom
'POLYGON((0 0,13.66 -6.83,13.66 -6.83,0 0,0 0))'
If you think this is of use to you, make a donation and I will release the code to you along with any other MySQL functions I have created.