Sketch

[Frenzie]

That's in https://github.com/koreader/koreader...ouch_probe.lua

[baskerville]

Sketch now works in 32-bit mode. Furthermore, all the models now have their x and y axes swapped by default.

If you have a model that requires to set the SKETCH_UNSWAP_XY environment variable (cf. README), I'd appreciate if you could provide the output of ntx_hwconfig -s -p /dev/mmcblk0 PCB 2> /dev/null.

Please note that the launch script has changed: the PRODUCT environment variable needs to be set before Sketch starts.

You can invert the displayed colors (if your device supports the corresponding hardware flag) by pressing more than 2 seconds on the power button and then releasing it.

[tshering]

On my C Touch (E60610D), without the SKETCH_UNSWAP_XY being set, the screen output appears 90 degrees turned to the right. When I set SKETCH_UNSWAP_XY, the screen output is mirrored horizontally (I draw a downward arrow in the upper right corner, and it appears an upward arrow in the lower right corner). This, the output being mirrored horizontally, was also the situation with the previous version of sketch.

[baskerville]

Thanks, I've added support for the following environment variable: SKETCH_UNMIRROR_X.

The behavior associated with the power button has slightly changed:

• A short press/release of the power button will:
  • Save and clear the canvas if it isn't empty.
  • Quit if it's empty.
• A long press/release (held more than 2 seconds) of the power button will inverse the displayed colors.

I'm wondering if there might be a link between the phoenix protocol and the swapping of the x and y axes?

[tshering]

Works now nicely on my Touch (C), Touch (B), and Glo.
You are certainly aware of it, but I mention it nonetheless. The saved images are rotated 90 degree counterclockwise.

[baskerville]

I wasn't aware of the rotation issue.

The output of:

cat /sys/class/graphics/fb0/rotate

Might be helpful.

[tshering]

Originally Posted by baskerville

I wasn't aware of the rotation issue.

The output of:

cat /sys/class/graphics/fb0/rotate

Might be helpful.

Things are getting confusing.
On my Touch (C), rotation is 0 when KSM is running; and 3 when nickel is running. When I run sketch with rotation = 0 (and the SKETCH_UNSWAP_XY and SKETCH_UNMIRROR_X set), the drawing on the screen is upright, and the saved png is rotated. When I run sketch with rotation = 3, the drawing is rotated, and the png is upright. I tried unsetting SKETCH_UNSWAP_XY and SKETCH_UNMIRROR_X but did not get both drawing on screen and png to be upright.

On my Touch (A) rotation is 0 when KSM is running, and also when nickel is running. When I run sketch (without the two variables set), the drawing is upright, and the png is rotated and there is something more that is difficult to describe (EDIT: this surplus is visible only on the png, not on the screen).
drawing-20170426_183531.png: I draw an upward arrow, only the head (no shaft, no bar); I draw it with two lines. (This does not sound credible, I guess.)
drawing-20170426_183809.png: I draw an upward arrow, consisting of head, shaft and bar (like U+21a5 Upwards Arrow From Bar on https://en.wikipedia.org/wiki/Arrow_(symbol)), I draw it with four lines
drawing-20170426_185600.png: I draw a line from left top to right bottom
EDIT: maybe I should also mention that my Touch (A) is running an rather old FW (2.6.1 or so)

[Nemo1984]

I've been watching this project. It's really cool, thanks for that!

Envoyé de mon SM-G800H en utilisant Tapatalk

[baskerville]

Originally Posted by tshering

Things are getting confusing.

Thanks, indeed.

I'm afraid I don't see any obvious fix for this.

So I'm just going to suggest a post-processing workflow:

mogrify -rotate 90 drawing-*.png

[GuyDoodles]

I don't understand how to get this on my e-Reader. When I downloaded the .zip all I got was a folder called Icon inside a folder called Sketch. Is there a KoboRoot.tgz I can use?

[baskerville]

Originally Posted by GuyDoodles

I don't understand how to get this on my e-Reader. When I downloaded the .zip all I got was a folder called Icon inside a folder called Sketch. Is there a KoboRoot.tgz I can use?

The installation instructions are (cf. README.md):

• Install fmon.
• Unzip the archive to the root of the SD card.

[ItalianUruguayan]

baskervile

Is there any way to make the line thicker?

[baskerville]

Originally Posted by ItalianUruguayan

Is there any way to make the line thicker?

No, because I'm using the classic Bresenham algorithm to draw lines.

But I'm certain there must exist variants of this algorithm that handle thickness.

[PeterT]

See http://kt8216.unixcab.org/murphy/index.html

[baskerville]

Originally Posted by PeterT

See http://kt8216.unixcab.org/murphy/index.html

Thanks, I think I'd like a single dot to be a disk of diameter thickness though.