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evdev: Clamp axis values to the 0.0-1.0 range

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The values are expected to be in the 0.0-1.0 range (as indicated by the
comment), and other parts of Dolphin also expect it to be in that range
since the "full" axis has a -1.0 to 1.0 range.  However, this is not
always the case and fvalue can end up being outside of the range. This
clamps fvalue to always be in the 0.0 and 1.0 range.
This commit is contained in:
Léo Lam 2016-07-11 14:00:09 +02:00
parent f57aec0525
commit 6cc4591226
1 changed files with 2 additions and 1 deletions
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3
Source/Core/InputCommon/ControllerInterface/evdev/evdev.cpp
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@ -9,6 +9,7 @@
#include "Common/Assert.h" #include "Common/Assert.h"
#include "Common/Logging/Log.h" #include "Common/Logging/Log.h"
#include "Common/MathUtil.h"
#include "InputCommon/ControllerInterface/ControllerInterface.h" #include "InputCommon/ControllerInterface/ControllerInterface.h"
#include "InputCommon/ControllerInterface/evdev/evdev.h" #include "InputCommon/ControllerInterface/evdev/evdev.h"
@ -196,7 +197,7 @@ ControlState evdevDevice::Axis::GetState() const
libevdev_fetch_event_value(m_dev, EV_ABS, m_code, &value); libevdev_fetch_event_value(m_dev, EV_ABS, m_code, &value);
// Value from 0.0 to 1.0 // Value from 0.0 to 1.0
ControlState fvalue = double(value - m_min) / double(m_range); ControlState fvalue = MathUtil::Clamp(double(value - m_min) / double(m_range), 0.0, 1.0);
// Split into two axis, each covering half the range from 0.0 to 1.0 // Split into two axis, each covering half the range from 0.0 to 1.0
if (m_upper) if (m_upper)