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updated camera changes

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This commit is contained in:
hultonha
2021-04-27 10:30:07 +01:00
parent 15afcc341d
commit c898318377
1 changed files with 19 additions and 18 deletions
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Code/Framework/AzFramework/AzFramework/Viewport/CameraInput.cpp
+19 -18
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@@ -33,7 +33,7 @@ namespace AzFramework
m_cameras.HandleEvents(event);
}
Camera CameraSystem::StepCamera(const Camera& targetCamera, float deltaTime)
Camera CameraSystem::StepCamera(const Camera& targetCamera, const float deltaTime)
{
const auto cursorDelta = m_currentCursorPosition.has_value() && m_lastCursorPosition.has_value()
? m_currentCursorPosition.value() - m_lastCursorPosition.value()
@@ -157,9 +157,9 @@ namespace AzFramework
nextCamera.m_pitch -= float(cursorDelta.m_y) * m_props.m_rotateSpeed;
nextCamera.m_yaw -= float(cursorDelta.m_x) * m_props.m_rotateSpeed;
auto clamp_rotation = [](const float angle) { return std::fmod(angle + AZ::Constants::TwoPi, AZ::Constants::TwoPi); };
const auto clampRotation = [](const float angle) { return std::fmod(angle + AZ::Constants::TwoPi, AZ::Constants::TwoPi); };
nextCamera.m_yaw = clamp_rotation(nextCamera.m_yaw);
nextCamera.m_yaw = clampRotation(nextCamera.m_yaw);
// clamp pitch to be +-90 degrees
nextCamera.m_pitch = AZ::GetClamp(nextCamera.m_pitch, -AZ::Constants::HalfPi, AZ::Constants::HalfPi);
@@ -285,10 +285,10 @@ namespace AzFramework
{
Camera nextCamera = targetCamera;
const auto translation_basis = m_translationAxesFn(nextCamera);
const auto axisX = translation_basis.GetBasisX();
const auto axisY = translation_basis.GetBasisY();
const auto axisZ = translation_basis.GetBasisZ();
const auto translationBasis = m_translationAxesFn(nextCamera);
const auto axisX = translationBasis.GetBasisX();
const auto axisY = translationBasis.GetBasisY();
const auto axisZ = translationBasis.GetBasisZ();
const float speed = [boost = m_boost, props = m_props]() {
return props.m_translateSpeed * (boost ? props.m_boostMultiplier : 1.0f);
@@ -366,7 +366,7 @@ namespace AzFramework
}
Camera OrbitCameraInput::StepCamera(
const Camera& targetCamera, const ScreenVector& cursorDelta, const float scrollDelta, float deltaTime)
const Camera& targetCamera, const ScreenVector& cursorDelta, const float scrollDelta, const float deltaTime)
{
Camera nextCamera = targetCamera;
@@ -413,7 +413,7 @@ namespace AzFramework
Camera OrbitDollyScrollCameraInput::StepCamera(
const Camera& targetCamera, [[maybe_unused]] const ScreenVector& cursorDelta, const float scrollDelta,
[[maybe_unused]] float deltaTime)
[[maybe_unused]] const float deltaTime)
{
Camera nextCamera = targetCamera;
nextCamera.m_lookDist = AZ::GetMin(nextCamera.m_lookDist + scrollDelta * m_props.m_dollySpeed, 0.0f);
@@ -457,7 +457,7 @@ namespace AzFramework
}
Camera ScrollTranslationCameraInput::StepCamera(
const Camera& targetCamera, [[maybe_unused]] const ScreenVector& cursorDelta, float scrollDelta,
const Camera& targetCamera, [[maybe_unused]] const ScreenVector& cursorDelta, const float scrollDelta,
[[maybe_unused]] const float deltaTime)
{
Camera nextCamera = targetCamera;
@@ -477,25 +477,26 @@ namespace AzFramework
const auto clamp_rotation = [](const float angle) { return std::fmod(angle + AZ::Constants::TwoPi, AZ::Constants::TwoPi); };
// keep yaw in 0 - 360 range
float target_yaw = clamp_rotation(targetCamera.m_yaw);
const float current_yaw = clamp_rotation(currentCamera.m_yaw);
float targetYaw = clamp_rotation(targetCamera.m_yaw);
const float currentYaw = clamp_rotation(currentCamera.m_yaw);
auto sign = [](const float value) { return static_cast<float>((0.0f < value) - (value < 0.0f)); };
// return the sign of the float input (-1, 0, 1)
const auto sign = [](const float value) { return aznumeric_cast<float>((0.0f < value) - (value < 0.0f)); };
// ensure smooth transition when moving across 0 - 360 boundary
const float yaw_delta = target_yaw - current_yaw;
if (std::abs(yaw_delta) >= AZ::Constants::Pi)
const float yawDelta = targetYaw - currentYaw;
if (std::abs(yawDelta) >= AZ::Constants::Pi)
{
target_yaw -= AZ::Constants::TwoPi * sign(yaw_delta);
targetYaw -= AZ::Constants::TwoPi * sign(yawDelta);
}
Camera camera;
// note: the math for the lerp smoothing implementation for camera rotation and translation was inspired by this excellent
// note: the math for the lerp smoothing implementation for camera rotation and translation was inspired by this excellent
// article by Scott Lembcke: https://www.gamasutra.com/blogs/ScottLembcke/20180404/316046/Improved_Lerp_Smoothing.php
const float lookRate = std::exp2(props.m_lookSmoothness);
const float lookT = std::exp2(-lookRate * deltaTime);
camera.m_pitch = AZ::Lerp(targetCamera.m_pitch, currentCamera.m_pitch, lookT);
camera.m_yaw = AZ::Lerp(target_yaw, current_yaw, lookT);
camera.m_yaw = AZ::Lerp(targetYaw, currentYaw, lookT);
const float moveRate = std::exp2(props.m_moveSmoothness);
const float moveT = std::exp2(-moveRate * deltaTime);
camera.m_lookDist = AZ::Lerp(targetCamera.m_lookDist, currentCamera.m_lookDist, moveT);