1097792 - Further Tweak fling curving prefs

Status: RESOLVED FIXED

(Firefox OS Graveyard :: General, defect)

Description

[Mason Chang [Inactive] [:mchang]]

+++ This bug was initially created as a clone of Bug #1095727 +++

Tweak the prefs set in bug 1095727 some more.

Comment 1

[Mason Chang [Inactive] [:mchang]]

From bug 1095727, those settings are pretty good. It feels really nice. At this point I think either way, we're good and now it's personal preference.

user_pref("apz.fling_curve_function_x1", ".385");
user_pref("apz.fling_curve_function_x2", ".76");
user_pref("apz.fling_curve_function_y1", "0");
user_pref("apz.fling_curve_function_y2", "1");
user_pref("apz.fling_curve_threshold_inches_per_ms", "0.01");
user_pref("apz.fling_friction", "0.00238");

The only things I wanted to change were:

1) Tweak the curve so that we get the speed bump just a tad earlier while maintaining the feel at low speeds. I noticed that whenever I wanted to go fast, I had to be much more intentional about it with the settings from 1095727.
2) Tweak the friction - I just wanted a tad more speed and more driftiness. This also janks a bit less during the final drift.

@Gordon - Can you try these. Otherwise, the prefs in bug 1095727 can stand until silk comes around. Thanks!

Comment 2

[Gordon Brander :gordonb]

While I do like the additional drifty-ness, I feel these prefs are too fast and feel less end-to-end consistent. One thing I want to avoid is a dramatic difference between the low and high-end. I think it's a usability win to maintain the illusion that scrolling only has one "mode".

Comment 3

[Mason Chang [Inactive] [:mchang]]

From comment 2, closing.

Comment 4

[Gordon Brander :gordonb]

I've got one more for you:

    user_pref("apz.fling_curve_function_x1", ".41");
    user_pref("apz.fling_curve_function_y1", "0");
    user_pref("apz.fling_curve_function_x2", ".8");
    user_pref("apz.fling_curve_function_y2", "1");
    user_pref("apz.fling_friction", "0.00238");

Drifty-er, but reduced at the high-end very slightly. I'm really happy with this one. Give it a spin.

Comment 5

[Mason Chang [Inactive] [:mchang]]

Just played with it. I like it! It feels much more predictable and scales better with fling speeds. I still think we need to tweak the low end a bit, but the low end here feels better than the low end from comment 1. And the top end speed is still a tad slow, but still good enough that I probably wouldn't notice it unless I look for it. And the extra drift, yummy!

Comment 6

[Mason Chang [Inactive] [:mchang]]

Attachment: Further tweak fling prefs

If you're happy with the prefs from comment 4, we can land it.

Comment 7

[Kartikaya Gupta (email:[e-mail])]

Gordon, do you want to land the prefs in comment 4?

Comment 8

[Gordon Brander :gordonb]

Yeah, let's land them.

Comment 9

[Carsten Book [:Tomcat]]

Hi, could you provide a try run thanks!

Comment 10

[Kartikaya Gupta (email:[e-mail])]

Not really worth doing a try run for this. I just landed it:

https://hg.mozilla.org/integration/b2g-inbound/rev/08ad3521ebe6

Comment 11

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/mozilla-central/rev/08ad3521ebe6