ROYGBV

Radial symmetry, &  mirror symmetry are 2 of the simplest symmetries. A professional level design program should allow design work in all 17 wall paper groups. Even free java applets (for example  2 versions of "Escher Sketch") on the internet can do this. And long ago plugins for photoshop (Terazzo & Kai's Power Tools) had a filter that allowed this with images, with a live preview. So although it sounds complicated good programmers do such things just for kicks. Later an overpriced, clunky plug in was made for A illustrator, that did this called "Symmetry Works". And now there is a consumer level app on ipad, for play purposes that also works with all the symmetry groups. (  http://science-to-touch.com/en/iOrnament.html  )  ( https://eschersket.ch/ and  http://levskaya.github.io/eschersketch/   and  http://skuld.bmsc.washington.edu/~merritt/bc530/local_copies/escher/ )
To make the program useful for whole other markets: textile designers, etc., this is an essential functionality. To differentiate Affinity designer from the rest of the pack, implementing this well, could easily  be another great step.

Line length, line angle, & line position, should all be available together. To take a graphics program, from a consumer level toy for making birthday cards, to a professional level, such information and more (area) should be available for every polygon and geometric type shape. For example every polygon should have the option to display its center with crosshairs and to show its basic subdivisions. So a hexagon would be able to show its subdivisions into 6 similar triangles. There is nothing difficult, about this for a computer, or in terms of code. Drawing programs back in the 1990s could do this. There was one dialog box for creating multisided polygons till they became indistinguishable from circles, with or without subdivisions. Not a dumbed down display of 10-12 "favorites.

Line length, line angle, & line position, should all be available together. To take a graphics program, from a consumer level toy for making birthday cards, to a professional level, such information and more (area) should be available for every polygon and geometric type shape. For example every polygon should have the option to display its center with crosshairs and to show its basic subdivisions. So a hexagon would be able to show its subdivisions into 6 similar triangles. There is nothing difficult, about this for a computer, or in terms of code. Drawing programs back in the 1990s could do this. There was one dialog box for creating multisided polygons till they became indistinguishable from circles, with or without subdivisions. Not a dumbed down display of 10-12 "favorites.

Line length, line angle, & line position, should all be available together. To take a graphics program, from a consumer level toy for making birthday cards, to a professional level, such information and more (area) should be available for every polygon and geometric type shape. For example every polygon should have the option to display its center with crosshairs and to show its basic subdivisions. So a hexagon would be able to show its subdivisions into 6 similar triangles. There is nothing difficult, about this for a computer, or in terms of code. Drawing programs back in the 1990s could do this. There was one dialog box for creating multisided polygons till they became indistinguishable from circles, with or without subdivisions. Not a dumbed down display of 10-12 "favorites.

Radial symmetry, &  mirror symmetry are 2 of the simplest symmetries. A professional level design program should allow design work in all 17 wall paper groups. Even free java applets (for example  2 versions of "Escher Sketch") on the internet can do this. And long ago plugins for photoshop (Terazzo & Kai's Power Tools) had a filter that allowed this with images, with a live preview. So although it sounds complicated good programmers do such things just for kicks. Later an overpriced, clunky plug in was made for A illustrator, that did this called "Symmetry Works". And now there is a consumer level app on ipad, for play purposes that also works with all the symmetry groups. (  http://science-to-touch.com/en/iOrnament.html  )  ( https://eschersket.ch/ and  http://levskaya.github.io/eschersketch/   and  http://skuld.bmsc.washington.edu/~merritt/bc530/local_copies/escher/ )
To make the program useful for whole other markets: textile designers, etc., this is an essential functionality. To differentiate Affinity designer from the rest of the pack, implementing this well, could easily  be another great step.

Line length, line angle, & line position, should all be available together. To take a graphics program, from a consumer level toy for making birthday cards, to a professional level, such information and more (area) should be available for every polygon and geometric type shape. For example every polygon should have the option to display its center with crosshairs and to show its basic subdivisions. So a hexagon would be able to show its subdivisions into 6 similar triangles. There is nothing difficult, about this for a computer, or in terms of code. Drawing programs back in the 1990s could do this. There was one dialog box for creating multisided polygons till they became indistinguishable from circles, with or without subdivisions. Not a dumbed down display of 10-12 "favorites.