Attachment 136628 Details for Bug 101139 – Lowclip patch

[patch] Lowclip patch

lowclip.patch (text/plain), 1.52 KB, created by Greg Reichow on 2018-01-09 07:10:21 UTC

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Creator: Greg Reichow

Created: 2018-01-09 07:10:21 UTC

Size: 1.52 KB

patch

obsolete

>diff --git a/src/filter.c b/src/filter.c
>index 206695bb..8e260fdd 100644
>--- a/src/filter.c
>+++ b/src/filter.c
>@@ -827,7 +827,7 @@ touchpad_accel_profile_linear(struct motion_filter *filter,
> 	struct pointer_accelerator *accel_filter =
> 		(struct pointer_accelerator *)filter;
> 	const double max_accel = accel_filter->accel; /* unitless factor */
>-	const double threshold = accel_filter->threshold; /* units/us */
>+	const double threshold = accel_filter->threshold / 2.0; /* units/us */
> 	const double incline = accel_filter->incline;
> 	double factor; /* unitless */
> 
>@@ -868,31 +868,10 @@ touchpad_accel_profile_linear(struct motion_filter *filter,
> 	  * 0.3 is chosen simply because it is above the Nyquist frequency
> 	    for subpixel motion within a pixel.
> 	*/
>-	if (speed_in < 7.0) {
>-		factor = 0.1 * speed_in + 0.3;
>-	/* up to the threshold, we keep factor 1, i.e. 1:1 movement */
>-	} else if (speed_in < threshold) {
>-		factor = 1;
>-	} else {
>-	/* Acceleration function above the threshold:
>-		y = ax' + b
>-		where T is threshold
>-		      x is speed_in
>-		      x' is speed
>-	        and
>-			y(T) == 1
>-		hence 1 = ax' + 1
>-			=> x' := (x - T)
>-	 */
>-		factor = incline * (speed_in - threshold) + 1;
>-	}
>-
>+	factor = max(0.4, (1 + 0.5 * filter->speed_adjustment) * (incline * (speed_in - threshold) + 0.4));
> 	/* Cap at the maximum acceleration factor */
> 	factor = min(max_accel, factor);
>-
>-	/* Scale everything depending on the acceleration set */
>-	factor *= 1 + 0.5 * filter->speed_adjustment;
>-
>+	
> 	return factor * TP_MAGIC_SLOWDOWN;
> }
>

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Attachments on bug 101139: 135510 | 135579 | 136584 | 136585 | 136627 | 136628 | 138012 | 138716

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