Draw a letter within a viewbox

snaders

I have the feeling this should be easy, but I can't find a way to do this:

Draw a letter to fill up a certain viewbox (which I can change).

What I've tried:

Load a SVG, place it as an image (you can't load an SVG)
Load a PDF, place it as an image (you can't resize an image?)
Draw the letter as a path (you can't resize the path?)

Any ideas? Thanks in advance!

gferreira

if you know the size of the box, and the size of the letter, you can calculate a scaling factor between the two:

# get lettershape as bezier
B = BezierPath()
B.text('a', (0, 0), fontSize=1000, font='Georgia')

# get lettershape bounding box
left, bottom, right, top = B.bounds()

# calculate lettershape width & height 
letterWidth  = right - left
letterHeight = top - bottom

# define box width & height
boxWidth, boxHeight = 800, 400

# calculate scaling factors
factorHeight = boxHeight / letterHeight
factorWidth  = boxWidth  / letterWidth

# draw box
fill(1, 1, 0)
rect(0, 0, boxWidth, boxHeight)

# apply scaling factors
scale(factorWidth, factorHeight)

# shift shape to origin position
translate(-left, -bottom)

# draw scaled lettershape
fill(1, 0, 0)
drawPath(B)

snaders

Perfect, exactly what I need.

Didn't know about the 'bounds' function.

Thanks! Also for the code-excerpt. Works perfectly.

frederik

@gferreira solution also works for images (and also where the source is a pdf)

use w, h = imageSize(pathToSource) to calculate the size of a given image. see imageSize docs

good luck

snaders

@frederik Thanks. Will have a look which type gives the best result. To use the actual font sounds like a good choice though. In Processing (where I made this animation first) I used SVG, but mainly because it's almost impossible to work with type in Processing. Curious which one is faster also.