Grease Pencil: In the line-drawing mode a tablet pen produces non-deterministic line with. #44932

New Issue

Martin Capitanio · 2015-06-02T23:19:10+02:00

Martin Capitanio commented

2015-06-02 23:19:10 +02:00

System Information
Linux Ubuntu LTS 14.04 / Wacom Intuos 4
(doesn't have issues in other programs (gimp, mypaint, inkscape, ...)

Blender Version
<= 2.74.5

Short description of error
The "free-stroke" (d) modus works as expected - the stroke thickness follows the pen<->tablet pressure,
but the line-thickness in the line mode (ctrl+d) is mostly 1px or sometimes a random (i.e. useless) value.

If capturing of the start/end pen pressure value or drawing such a line in blender isn't technically reliable/possible,
the line should just use the Thickness of strokes parameter.

**System Information** Linux Ubuntu LTS 14.04 / Wacom Intuos 4 (doesn't have issues in other programs (gimp, mypaint, inkscape, ...) **Blender Version** <= 2.74.5 **Short description of error** The "free-stroke" (d) modus works as expected - the stroke thickness follows the pen<->tablet pressure, but the line-thickness in the line mode (ctrl+d) is mostly 1px or sometimes a random (i.e. useless) value. If capturing of the start/end pen pressure value or drawing such a line in blender isn't technically reliable/possible, the line should just use the **Thickness of strokes** parameter.

Martin Capitanio commented

2015-06-02 23:19:10 +02:00

Changed status to: 'Open'

Martin Capitanio commented

2015-06-02 23:19:10 +02:00

Added subscriber: @capnm

Joshua Leung commented

2015-06-03 01:10:57 +02:00

Added subscriber: @JoshuaLeung

Joshua Leung self-assigned this 2015-06-03 01:10:57 +02:00

Joshua Leung commented

2015-06-03 01:10:57 +02:00

I'll put this on my list of things to investigate.

Martin Capitanio commented

2015-06-03 09:25:20 +02:00

A similar problem has the GP_PAINTMODE_DRAW_POLY mode.

If you rise the pen, the pressure value is at that point (depends on timing) almost zero.
Theoretically the right approach would be to record+use a pressure value a few ms from the past.
The code in gpencil_paint.c doesn't seem to do it or is somewhere else something "tunable"?

A workaround in the line-mode is a cancel (esc) the drawing while the pen applies the pressure,
but that is hardly an ergonomic way to draw lines.

Thanks.

A similar problem has the `GP_PAINTMODE_DRAW_POLY` mode. If you rise the pen, the pressure value is at that point (depends on timing) almost zero. Theoretically the right approach would be to record+use a pressure value a few ms from the past. The code in `gpencil_paint.c` doesn't seem to do it or is somewhere else something "tunable"? A workaround in the line-mode is a cancel (esc) the drawing while the pen applies the pressure, but that is hardly an ergonomic way to draw lines. Thanks.

Bastien Montagne commented

2015-06-03 09:53:26 +02:00

Added subscriber: @mont29

Martin Capitanio commented

2015-06-03 14:31:43 +02:00

Xinput events coming from the tablet pen (a quick rise from full pressure):
(blender probably pick-ups the last a- [x]=0 events for the line thickness)

0-X 1-Y 2-pressure 3-tiltX 4-tiltY 5-wheel

wacom intuos4
-------------------

button press   1 
motion a[0]=20289 a[1]=2551 a[2]=1392 a[3]=-54 a[4]=0 a[5]=-900 
motion a[0]=20282 a[1]=2549 a[2]=1455 a[3]=-54 a[4]=-1 a[5]=-900 
motion a[0]=20272 a[1]=2545 a[2]=1488 a[3]=-54 a[4]=-1 a[5]=-900 
motion a[0]=20264 a[1]=2541 a[2]=1494 a[3]=-53 a[4]=-1 a[5]=-900 
motion a[0]=20260 a[1]=2536 a[2]=1526 a[3]=-53 a[4]=-2 a[5]=-900 
motion a[0]=20256 a[1]=2534 a[2]=1579 a[3]=-53 a[4]=-2 a[5]=-900 
motion a[2]=1632 a[3]=-53 a[4]=-3 a[5]=-900 
motion a[0]=20253 a[1]=2532 a[2]=1663 a[3]=-53 a[4]=-3 a[5]=-900 
motion a[2]=1674 a[3]=-53 a[4]=-3 a[5]=-900 
motion a[2]=1682 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20256 a[1]=2532 a[2]=1687 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20259 a[1]=2532 a[2]=1699 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20263 a[1]=2532 a[2]=1725 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20269 a[1]=2535 a[2]=1763 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20281 a[1]=2540 a[2]=1799 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20298 a[1]=2547 a[2]=1842 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20318 a[1]=2553 a[2]=1896 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20345 a[1]=2559 a[2]=1952 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20402 a[1]=2564 a[2]=1996 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20473 a[1]=2564 a[2]=2034 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20547 a[1]=2562 a[2]=2048 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20663 a[1]=2556 a[2]=2048 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20810 a[1]=2541 a[2]=2048 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=20960 a[1]=2521 a[2]=2048 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=21175 a[1]=2486 a[2]=2048 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=21443 a[1]=2440 a[2]=2048 a[3]=-52 a[4]=-4 a[5]=-900 
motion a[0]=21729 a[1]=2385 a[2]=2048 a[3]=-53 a[4]=-4 a[5]=-900 
motion a[0]=22009 a[1]=2322 a[2]=2048 a[3]=-53 a[4]=-4 a[5]=-900 
motion a[0]=22276 a[1]=2258 a[2]=2048 a[3]=-53 a[4]=-4 a[5]=-900 
motion a[0]=22614 a[1]=2173 a[2]=2048 a[3]=-54 a[4]=-4 a[5]=-900 
motion a[0]=22980 a[1]=2086 a[2]=2048 a[3]=-54 a[4]=-4 a[5]=-900 
motion a[0]=23354 a[1]=1994 a[2]=2048 a[3]=-54 a[4]=-4 a[5]=-900 
motion a[0]=23744 a[1]=1899 a[2]=2048 a[3]=-55 a[4]=-4 a[5]=-900 
motion a[0]=24142 a[1]=1791 a[2]=2048 a[3]=-55 a[4]=-4 a[5]=-900 
motion a[0]=24564 a[1]=1684 a[2]=2048 a[3]=-56 a[4]=-3 a[5]=-900 
motion a[0]=24994 a[1]=1564 a[2]=2048 a[3]=-56 a[4]=-3 a[5]=-900 
motion a[0]=25428 a[1]=1444 a[2]=2048 a[3]=-56 a[4]=-3 a[5]=-900 
motion a[0]=25846 a[1]=1324 a[2]=2048 a[3]=-57 a[4]=-3 a[5]=-900 
motion a[0]=26232 a[1]=1204 a[2]=2048 a[3]=-57 a[4]=-2 a[5]=-900 
motion a[0]=26582 a[1]=1093 a[2]=2048 a[3]=-57 a[4]=-2 a[5]=-900 
motion a[0]=26888 a[1]=981 a[2]=2048 a[3]=-57 a[4]=-2 a[5]=-900 
motion a[0]=27158 a[1]=869 a[2]=2048 a[3]=-57 a[4]=-2 a[5]=-900 
motion a[0]=27372 a[1]=761 a[2]=2048 a[3]=-57 a[4]=-2 a[5]=-900 
motion a[0]=27554 a[1]=658 a[2]=2048 a[3]=-57 a[4]=-1 a[5]=-900 
motion a[0]=27708 a[1]=558 a[2]=2048 a[3]=-57 a[4]=-1 a[5]=-900 
motion a[0]=27838 a[1]=459 a[2]=2048 a[3]=-57 a[4]=-1 a[5]=-900 
motion a[0]=27944 a[1]=374 a[2]=1960 a[3]=-57 a[4]=-1 a[5]=-900 
motion a[0]=28001 a[1]=285 a[2]=1694 a[3]=-57 a[4]=-1 a[5]=-900 
motion a[0]=28039 a[1]=159 a[2]=0 a[3]=-57 a[4]=-1 a[5]=-900 
button release 1 

wacom bamboo
--------------------
button press   1 a[0]=6022 a[1]=5745 a[2]=184 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6021 a[1]=5745 a[2]=340 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6021 a[1]=5745 a[2]=478 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6021 a[1]=5745 a[2]=630 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6018 a[1]=5745 a[2]=784 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6018 a[1]=5745 a[2]=930 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6018 a[1]=5745 a[2]=1071 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6018 a[1]=5745 a[2]=1211 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6018 a[1]=5745 a[2]=1337 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6018 a[1]=5745 a[2]=1433 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6018 a[1]=5745 a[2]=1511 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6018 a[1]=5745 a[2]=1579 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6018 a[1]=5745 a[2]=1639 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6018 a[1]=5745 a[2]=1705 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6014 a[1]=5745 a[2]=1765 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6014 a[1]=5745 a[2]=1825 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6014 a[1]=5745 a[2]=1879 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6014 a[1]=5745 a[2]=1933 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6014 a[1]=5745 a[2]=1979 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6012 a[1]=5745 a[2]=2011 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6012 a[1]=5745 a[2]=2041 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6012 a[1]=5745 a[2]=2048 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6009 a[1]=5745 a[2]=2048 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6006 a[1]=5745 a[2]=2048 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6005 a[1]=5745 a[2]=2048 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6005 a[1]=5745 a[2]=1631 a[3]=0 a[4]=0 a[5]=-900 
motion a[0]=6004 a[1]=5745 a[2]=0 a[3]=0 a[4]=0 a[5]=-900 
button release 1 a[0]=6004 a[1]=5745 a[2]=0 a[3]=0 a[4]=0 a[5]=-900

Xinput events coming from the tablet pen (a quick rise from full pressure): (blender probably pick-ups the last a- [x]=0 events for the line thickness) ``` 0-X 1-Y 2-pressure 3-tiltX 4-tiltY 5-wheel wacom intuos4 ------------------- button press 1 motion a[0]=20289 a[1]=2551 a[2]=1392 a[3]=-54 a[4]=0 a[5]=-900 motion a[0]=20282 a[1]=2549 a[2]=1455 a[3]=-54 a[4]=-1 a[5]=-900 motion a[0]=20272 a[1]=2545 a[2]=1488 a[3]=-54 a[4]=-1 a[5]=-900 motion a[0]=20264 a[1]=2541 a[2]=1494 a[3]=-53 a[4]=-1 a[5]=-900 motion a[0]=20260 a[1]=2536 a[2]=1526 a[3]=-53 a[4]=-2 a[5]=-900 motion a[0]=20256 a[1]=2534 a[2]=1579 a[3]=-53 a[4]=-2 a[5]=-900 motion a[2]=1632 a[3]=-53 a[4]=-3 a[5]=-900 motion a[0]=20253 a[1]=2532 a[2]=1663 a[3]=-53 a[4]=-3 a[5]=-900 motion a[2]=1674 a[3]=-53 a[4]=-3 a[5]=-900 motion a[2]=1682 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20256 a[1]=2532 a[2]=1687 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20259 a[1]=2532 a[2]=1699 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20263 a[1]=2532 a[2]=1725 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20269 a[1]=2535 a[2]=1763 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20281 a[1]=2540 a[2]=1799 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20298 a[1]=2547 a[2]=1842 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20318 a[1]=2553 a[2]=1896 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20345 a[1]=2559 a[2]=1952 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20402 a[1]=2564 a[2]=1996 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20473 a[1]=2564 a[2]=2034 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20547 a[1]=2562 a[2]=2048 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20663 a[1]=2556 a[2]=2048 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20810 a[1]=2541 a[2]=2048 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=20960 a[1]=2521 a[2]=2048 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=21175 a[1]=2486 a[2]=2048 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=21443 a[1]=2440 a[2]=2048 a[3]=-52 a[4]=-4 a[5]=-900 motion a[0]=21729 a[1]=2385 a[2]=2048 a[3]=-53 a[4]=-4 a[5]=-900 motion a[0]=22009 a[1]=2322 a[2]=2048 a[3]=-53 a[4]=-4 a[5]=-900 motion a[0]=22276 a[1]=2258 a[2]=2048 a[3]=-53 a[4]=-4 a[5]=-900 motion a[0]=22614 a[1]=2173 a[2]=2048 a[3]=-54 a[4]=-4 a[5]=-900 motion a[0]=22980 a[1]=2086 a[2]=2048 a[3]=-54 a[4]=-4 a[5]=-900 motion a[0]=23354 a[1]=1994 a[2]=2048 a[3]=-54 a[4]=-4 a[5]=-900 motion a[0]=23744 a[1]=1899 a[2]=2048 a[3]=-55 a[4]=-4 a[5]=-900 motion a[0]=24142 a[1]=1791 a[2]=2048 a[3]=-55 a[4]=-4 a[5]=-900 motion a[0]=24564 a[1]=1684 a[2]=2048 a[3]=-56 a[4]=-3 a[5]=-900 motion a[0]=24994 a[1]=1564 a[2]=2048 a[3]=-56 a[4]=-3 a[5]=-900 motion a[0]=25428 a[1]=1444 a[2]=2048 a[3]=-56 a[4]=-3 a[5]=-900 motion a[0]=25846 a[1]=1324 a[2]=2048 a[3]=-57 a[4]=-3 a[5]=-900 motion a[0]=26232 a[1]=1204 a[2]=2048 a[3]=-57 a[4]=-2 a[5]=-900 motion a[0]=26582 a[1]=1093 a[2]=2048 a[3]=-57 a[4]=-2 a[5]=-900 motion a[0]=26888 a[1]=981 a[2]=2048 a[3]=-57 a[4]=-2 a[5]=-900 motion a[0]=27158 a[1]=869 a[2]=2048 a[3]=-57 a[4]=-2 a[5]=-900 motion a[0]=27372 a[1]=761 a[2]=2048 a[3]=-57 a[4]=-2 a[5]=-900 motion a[0]=27554 a[1]=658 a[2]=2048 a[3]=-57 a[4]=-1 a[5]=-900 motion a[0]=27708 a[1]=558 a[2]=2048 a[3]=-57 a[4]=-1 a[5]=-900 motion a[0]=27838 a[1]=459 a[2]=2048 a[3]=-57 a[4]=-1 a[5]=-900 motion a[0]=27944 a[1]=374 a[2]=1960 a[3]=-57 a[4]=-1 a[5]=-900 motion a[0]=28001 a[1]=285 a[2]=1694 a[3]=-57 a[4]=-1 a[5]=-900 motion a[0]=28039 a[1]=159 a[2]=0 a[3]=-57 a[4]=-1 a[5]=-900 button release 1 wacom bamboo -------------------- button press 1 a[0]=6022 a[1]=5745 a[2]=184 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6021 a[1]=5745 a[2]=340 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6021 a[1]=5745 a[2]=478 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6021 a[1]=5745 a[2]=630 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6018 a[1]=5745 a[2]=784 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6018 a[1]=5745 a[2]=930 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6018 a[1]=5745 a[2]=1071 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6018 a[1]=5745 a[2]=1211 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6018 a[1]=5745 a[2]=1337 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6018 a[1]=5745 a[2]=1433 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6018 a[1]=5745 a[2]=1511 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6018 a[1]=5745 a[2]=1579 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6018 a[1]=5745 a[2]=1639 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6018 a[1]=5745 a[2]=1705 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6014 a[1]=5745 a[2]=1765 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6014 a[1]=5745 a[2]=1825 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6014 a[1]=5745 a[2]=1879 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6014 a[1]=5745 a[2]=1933 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6014 a[1]=5745 a[2]=1979 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6012 a[1]=5745 a[2]=2011 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6012 a[1]=5745 a[2]=2041 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6012 a[1]=5745 a[2]=2048 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6009 a[1]=5745 a[2]=2048 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6006 a[1]=5745 a[2]=2048 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6005 a[1]=5745 a[2]=2048 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6005 a[1]=5745 a[2]=1631 a[3]=0 a[4]=0 a[5]=-900 motion a[0]=6004 a[1]=5745 a[2]=0 a[3]=0 a[4]=0 a[5]=-900 button release 1 a[0]=6004 a[1]=5745 a[2]=0 a[3]=0 a[4]=0 a[5]=-900 ```

Martin Capitanio commented

2015-06-03 22:31:50 +02:00

BTW this

			/* if this is just the second point we've added, increment the buffer size
			 * so that it will be drawn properly...
			 * otherwise, just leave it alone, otherwise we get problems
			 */
			if (gpd->sbuffer_size != 2)
				gpd->sbuffer_size = 2;

is kind of funny ;-)

BTW this ``` gpencil_paint.c:362 /* if this is just the second point we've added, increment the buffer size * so that it will be drawn properly... * otherwise, just leave it alone, otherwise we get problems */ if (gpd->sbuffer_size != 2) gpd->sbuffer_size = 2; ``` is kind of funny ;-)

Martin Capitanio commented

2015-06-04 03:49:00 +02:00

tablet-pressure.patch from tip 896f08bde8
This makes the line and poly modus usable, but for sure not perfect.
There is e.g. the same issue with the line starting point in the tessellated mode
and another similar issues, that would probably need a redesign of GP.

At least it works better for me with both tested Wacom tablets on Linux and Windows7.

[tablet-pressure.patch](https://archive.blender.org/developer/F184486/tablet-pressure.patch) from tip 896f08bde8cdb336814cb359be09d7c215ef37bd This makes the line and poly modus usable, but for sure not perfect. There is e.g. the same issue with the line starting point in the tessellated mode and another similar issues, that would probably need a redesign of GP. At least it works better for me with both tested Wacom tablets on Linux and Windows7.

Martin Capitanio commented

2015-06-05 14:06:06 +02:00

Even with my previous 'imrovement' the artist keeps calling
the GP pen pressure support a crap :(

This patch just adds a toolbar toggle to switch it on/off.
I've got no better idea, if you have one, let me know :)

gp-pen-pressure-off-on.patch

Even with my previous 'imrovement' the artist keeps calling the GP pen pressure support a crap :( This patch just adds a toolbar toggle to switch it on/off. I've got no better idea, if you have one, let me know :) [gp-pen-pressure-off-on.patch](https://archive.blender.org/developer/F185394/gp-pen-pressure-off-on.patch) ![gp-pen-pressure-off-on.png](https://archive.blender.org/developer/F185395/gp-pen-pressure-off-on.png)

Martin Capitanio commented

2015-06-05 22:45:19 +02:00

Turns out, there is also a regression in the 'freehand' drawed strokes with the tablet pen. The first screenshot is from v2.74,
the second one from current tip at 94e7ac5b97

It was introduced in
a7cae2987d
(reverting the commit fixes the current tip)

Thanks

Turns out, there is also a **regression** in the 'freehand' drawed strokes with the tablet pen. The first screenshot is from v2.74, the second one from current tip at 94e7ac5b97dd0b15a53d47c78672b8ed1e8a4bf1 ![gp-blender-2.74.png](https://archive.blender.org/developer/F185697/gp-blender-2.74.png) ![gp-blender-tip.png](https://archive.blender.org/developer/F185699/gp-blender-tip.png) It was introduced in a7cae2987d078da8a3cb9a293fbcdf3b6ab43ddb (reverting the commit fixes the current tip) Thanks

Joshua Leung commented

2015-08-06 15:58:30 +02:00

Changed status from 'Open' to: 'Resolved'

Joshua Leung closed this issue

2015-08-06 15:58:30 +02:00

Joshua Leung commented

2015-08-06 15:58:30 +02:00

I've just committed two fixes - e660079e47 and 376e729de0

After testing out the pressure handling here, it was indeed quite crappy for line and poly modes. Since it doesn't seem too trivial to find a good way around the pressure issues for now (though maybe we could considering averaging pressure values?), I've just disabled it for these drawing modes for now.

The impact of this shouldn't be too bad, as the pressure wasn't really usable before, and we now have tools to change the pressure values afterwards (i.e. Alt-S - shrink/fatten in Stroke Edit Mode)

I've just committed two fixes - e660079e47 and 376e729de0 After testing out the pressure handling here, it was indeed quite crappy for line and poly modes. Since it doesn't seem too trivial to find a good way around the pressure issues for now (though maybe we could considering averaging pressure values?), I've just disabled it for these drawing modes for now. The impact of this shouldn't be too bad, as the pressure wasn't really usable before, and we now have tools to change the pressure values afterwards (i.e. Alt-S - shrink/fatten in Stroke Edit Mode)

Joshua Leung commented

2015-08-06 15:59:47 +02:00

BTW, regarding the regression, I can't reproduce this here.

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Grease Pencil: In the line-drawing mode a tablet pen produces non-deterministic line with. #44932