Transform Value Fields Repeatable Crash

[JET_Affinity]

You can reliably make the program crash by keying into the H or W fields a math expression which includes parenthesis. Ex: "3*(1+2)"

 

Result: It gives the "An unhandled exception has occurred" alert and then crashes the program.

 

Expected result: An appropriate alert should appear, of course, when a user enters values which are unsupported or invalid. But it should restore the previous value, not crash the program.

 

Just for discussion:

I know the example above doesn't require parenthesis. I just wanted to test it because as I recall, FreeHand's value fields could evaluate expressions, beyond simple multiplication-division and addition-subtraction operators.

 

It's long been a pet peeve with me that here we are in the 21st century and the value fields of some vector drawing programs still can't do simple arithmetic, let alone support the same functions as any common spreadsheet program. So I do appreciate Affinity's preference settings for decimal rounding and at least simple operators in fields. But how great it would be, for example, to be able to enter sin() and cos() expressions for scale factors and measures.

 

(Okay. Rant over, I'll sleep better.)

 

;-)

 

JET

[Mark Ingram]

Thanks JET, I've logged this and we'll get a fix available soon.

[Ben]

There was a "small" bug in the parsing of parenthesis.  Now fixed.

 

Incidentally, we can already do complex functions, and we already offer functions including:

min(a,b )

max(a,b )

mid(a,b )

sq(x)

sqrt(x)

abs(x)

lerp(a,b,t)

clamp(a,min,max)

sin(angle)

cost(angle)

tan(angle)

 

Note: Angle has to be in an angle unit, such as deg or rad.  So, you'd type "sin(45deg)".  I'm looking at the option of promoting un-typed values to the type required by functions (so a number would be promoted to an angle where required).  We are a little strict about types because we allow for values to be expressed in incompatible types, such as percentages, angles and unit distances.

So, you cannot do "5mm + 40deg", for example.

[anon1]

https://forum.affinity.serif.com/index.php?/topic/18638-units/?p=86227

Here are even more infos 

[JET_Affinity]

Incidentally, we can already do complex functions, and we already offer functions including:

 

Holy cow! That's great! I'll be playing around with this this evening. This would be a strong differentiator from other programs, worth touting in the marketing.

 

Basic trig functions in a vector drawing program. What a concept!

 

;-)

 

Thanks.

 

JET