araq/pixels

Toy support library for primitive graphics programming.

Toy support library for primitive graphics programming.

pixels's Issues

nothing appears in window

I have the "Mastering Nim" book. Trying to run the first code example:

import pixels

# needed to install sdl2 and sdl2_tff

put_pixel(5, 9)
put_pixel(11, 18, Red)

(btw the book didn't say I needed the sdl2 and sdl2_tff libraries; kept getting compilation errors until I figured it out)

Anyway, I run this example and a window appears, but nothing is in it. It just shows the background pixels fixed in place:

untitled.mp4

Is there anything else I need to install to make this work? Or some kind of config setting?

OS is Manjaro Linux KDE.

drawText with Unicode doesn't work

import pixels
drawText 30, 40, "Hello, 世界", 16, Yellow

Results in the following on my macOS machine:

If I get some time, I'll dig into what changes need to happen to make this work.

Great book, btw!

drawText `x` param doesn't work

import pixels
for i in 0..10:
  drawText i * 10, i * 10, $i, 12, Yellow

results in

Implicit dependencies : sdl2 and sdl2_ttf

On Archlinux 5.18.14-zen1-1-zen, I need to install sdl2_ttf, otherwise I get a runtime error.

could not load: libSDL2_ttf(|-2.0).so(|.0)
(compile with -d:nimDebugDlOpen for more information)
Error: execution of an external program failed: '/home/kolmogorov/Documents/dev/mastering_nim/src/chapter1 '

I added import sdl2 on top of the first script of mastering nim example, and downloaded sdl2_ttf via pacman:
sudo pacman -S sdl2_ttf
I had also installed sdl2 nim package through nimble. I solved my problem by this installation of sdl2_ttf. The dependency sdl2_ttf should be added to pixels.nimble.