Hi,
We are integrating Athens transformation to Roassal2/Trachel and I have reached
an issue.
In drawing code I use something like this:
-=-=-=-
athensCanvas pathTransform
restoreAfter: [
athensCanvas pathTransform
multiplyBy: matrix; “an instance of
AthensAffineTransform"
athensCanvas
setPaint: color;
drawShape: self path.
-=-=-=-
I have a problem, that sometimes it crashes because it expects a float value (I
understand why). I suppose I do not have to keep float values in
AthensAffineTransform object. My suggestion is to ensure float values where it
is expected. For example the method #loadAffineTransform could be like this:
-=-=-=-
AthensCairoMatrix>>loadAffineTransform: m
self
initx: m x asFloat
y: m y asFloat
sx: m sx asFloat
sy: m sy asFloat
shx: m shx asFloat
shy: m shy asFloat
-=-=-=-
Right now I have to do that transformation myself whenever I use Athens
objects. I see it error prone and I do not see it obvious.
On other hand I do not want to keep float values in my AthensAffineTransform,
because if user do #scaleBy: 0.7 and then #scaleBy: (1/0.7) I want to get the
same original value. Otherwise the image could change its size.
The same change could be for other methods in AthensCairoMatrix.
What do you think?
Juraj
