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Commit 0698ecd2 authored by Michael Checo's avatar Michael Checo
Browse files

Pointer sensitivity: Adjust base gain range 

This CL updates the `calculateBaseGain` function to use a base gain range of [1.0, 2.5]
instead of [0.5, 1.5]. This change ensures that the pointer movement is more responsive to
changes in sensitivity.

Bug: b/384552392
Test: Manual
Flag: com.android.hardware.input.pointer_acceleration
Change-Id: I5db7b1473fd5b6869f02fc4ef7aa1458a0df6f58
parent bdb3bc4f

libs/input/AccelerationCurve.cpp

+2 −2
Original line number Diff line number Diff line
@@ -47,9 +47,9 @@ constexpr std::array<double, 15> kSensitivityFactors = {1, 2, 4, 6, 7, 8, 
// in faster pointer movements.

//

// The base gain is calculated using a linear mapping function that maps the

// sensitivity range [-7, 7] to a base gain range [0.5, 2.0].

// sensitivity range [-7, 7] to a base gain range [1.0, 3.5].

double calculateBaseGain(int32_t sensitivity) {

    return 0.5 + (sensitivity + 7) * (2.0 - 0.5) / (7 + 7);

    return 1.0 + (sensitivity + 7) * (3.5 - 1.0) / (7 + 7);

}



} // namespace