4e42229bdd
git-subtree-dir: external/gainput git-subtree-split: 2be0a50089eafcc6fccb66142180082e48f27f4c
127 lines
3.6 KiB
C++
127 lines
3.6 KiB
C++
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#include <gainput/gainput.h>
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#include <gainput/gestures/GainputRotateGesture.h>
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#ifdef GAINPUT_ENABLE_ROTATE_GESTURE
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#include <gainput/GainputInputDeltaState.h>
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#include <gainput/GainputHelpers.h>
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#define _USE_MATH_DEFINES
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#include <math.h>
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namespace gainput
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{
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RotateGesture::RotateGesture(InputManager& manager, DeviceId device, unsigned index, DeviceVariant /*variant*/) :
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InputGesture(manager, device, index),
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rotating_(false)
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{
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downButton_.buttonId = InvalidDeviceButtonId;
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xAxis_.buttonId = InvalidDeviceButtonId;
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yAxis_.buttonId = InvalidDeviceButtonId;
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downButton2_.buttonId = InvalidDeviceButtonId;
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xAxis2_.buttonId = InvalidDeviceButtonId;
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yAxis2_.buttonId = InvalidDeviceButtonId;
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state_ = manager_.GetAllocator().New<InputState>(manager.GetAllocator(), 2);
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GAINPUT_ASSERT(state_);
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previousState_ = manager_.GetAllocator().New<InputState>(manager.GetAllocator(), 2);
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GAINPUT_ASSERT(previousState_);
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}
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RotateGesture::~RotateGesture()
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{
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manager_.GetAllocator().Delete(state_);
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manager_.GetAllocator().Delete(previousState_);
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}
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void
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RotateGesture::Initialize(DeviceId downDevice, DeviceButtonId downButton,
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DeviceId xAxisDevice, DeviceButtonId xAxis,
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DeviceId yAxisDevice, DeviceButtonId yAxis,
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DeviceId down2Device, DeviceButtonId downButton2,
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DeviceId xAxis2Device, DeviceButtonId xAxis2,
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DeviceId yAxis2Device, DeviceButtonId yAxis2)
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{
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downButton_.deviceId = downDevice;
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downButton_.buttonId = downButton;
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xAxis_.deviceId = xAxisDevice;
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xAxis_.buttonId = xAxis;
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yAxis_.deviceId = yAxisDevice;
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yAxis_.buttonId = yAxis;
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downButton2_.deviceId = down2Device;
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downButton2_.buttonId = downButton2;
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xAxis2_.deviceId = xAxis2Device;
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xAxis2_.buttonId = xAxis2;
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yAxis2_.deviceId = yAxis2Device;
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yAxis2_.buttonId = yAxis2;
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}
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void
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RotateGesture::InternalUpdate(InputDeltaState* delta)
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{
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if (downButton_.buttonId == InvalidDeviceButtonId
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|| xAxis_.buttonId == InvalidDeviceButtonId
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|| yAxis_.buttonId == InvalidDeviceButtonId
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|| downButton2_.buttonId == InvalidDeviceButtonId
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|| xAxis2_.buttonId == InvalidDeviceButtonId
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|| yAxis2_.buttonId == InvalidDeviceButtonId)
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{
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return;
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}
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const InputDevice* downDevice = manager_.GetDevice(downButton_.deviceId);
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GAINPUT_ASSERT(downDevice);
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const bool isDown = downDevice->GetBool(downButton_.buttonId);
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const InputDevice* downDevice2 = manager_.GetDevice(downButton2_.deviceId);
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GAINPUT_ASSERT(downDevice2);
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const bool isDown2 = downDevice2->GetBool(downButton2_.buttonId);
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if (!isDown || !isDown2)
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{
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HandleButton(*this, *state_, delta, RotateTriggered, false);
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rotating_ = false;
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return;
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}
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HandleButton(*this, *state_, delta, RotateTriggered, true);
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const InputDevice* xAxisDevice = manager_.GetDevice(xAxis_.deviceId);
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GAINPUT_ASSERT(xAxisDevice);
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const float posX = xAxisDevice->GetFloat(xAxis_.buttonId);
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const InputDevice* yAxisDevice = manager_.GetDevice(yAxis_.deviceId);
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GAINPUT_ASSERT(yAxisDevice);
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const float posY = yAxisDevice->GetFloat(yAxis_.buttonId);
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const InputDevice* xAxis2Device = manager_.GetDevice(xAxis2_.deviceId);
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GAINPUT_ASSERT(xAxis2Device);
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const float posX2 = xAxis2Device->GetFloat(xAxis2_.buttonId);
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const InputDevice* yAxis2Device = manager_.GetDevice(yAxis2_.deviceId);
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GAINPUT_ASSERT(yAxis2Device);
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const float posY2 = yAxis2Device->GetFloat(yAxis2_.buttonId);
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const float angle = atan2f(posY2 - posY, posX2 - posX);
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if (!rotating_)
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{
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rotating_ = true;
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initialAngle_ = angle;
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HandleAxis(*this, *state_, delta, RotateAngle, 0.0f);
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return;
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}
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float currentAngle = angle - initialAngle_;
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if (currentAngle < 0.0f)
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{
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currentAngle += static_cast<float>(M_PI)*2.0f;
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}
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HandleAxis(*this, *state_, delta, RotateAngle, currentAngle);
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}
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}
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#endif
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