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Add OrthographicSize to Camera for fixed ortho projection size

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#1970
This commit is contained in:
Wojtek Figat
2024-08-21 21:54:22 +02:00
parent 6534136632
commit 73a596cb2f
2 changed files with 35 additions and 4 deletions
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25
Source/Engine/Level/Actors/Camera.cpp
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@@ -39,6 +39,7 @@ Camera::Camera(const SpawnParams& params)
, _customAspectRatio(0.0f)
, _near(10.0f)
, _far(40000.0f)
, _orthoSize(0.0f)
, _orthoScale(1.0f)
{
#if USE_EDITOR
@@ -120,6 +121,21 @@ void Camera::SetFarPlane(float value)
}
}
float Camera::GetOrthographicSize() const
{
return _orthoSize;
}
void Camera::SetOrthographicSize(float value)
{
value = Math::Clamp(value, 0.0f, 1000000.0f);
if (Math::NotNearEqual(_orthoSize, value))
{
_orthoSize = value;
UpdateCache();
}
}
float Camera::GetOrthographicScale() const
{
return _orthoScale;
@@ -201,7 +217,9 @@ Ray Camera::ConvertMouseToRay(const Float2& mousePosition, const Viewport& viewp
Float2 screenPosition(mousePosition.X / viewport.Width - 0.5f, -mousePosition.Y / viewport.Height + 0.5f);
Quaternion orientation = GetOrientation();
Float3 direction = orientation * Float3::Forward;
Vector3 rayOrigin(screenPosition.X * viewport.Width * _orthoScale, screenPosition.Y * viewport.Height * _orthoScale, 0);
const float orthoSize = (_orthoSize > 0.0f ? _orthoSize : viewport.Height) * _orthoScale;
const float aspect = _customAspectRatio <= 0.0f ? viewport.GetAspectRatio() : _customAspectRatio;
Vector3 rayOrigin(screenPosition.X * orthoSize * aspect, screenPosition.Y * orthoSize, 0);
rayOrigin = position + Vector3::Transform(rayOrigin, orientation);
rayOrigin += direction * _near;
return Ray(rayOrigin, direction);
@@ -260,14 +278,15 @@ void Camera::GetMatrices(Matrix& view, Matrix& projection, const Viewport& viewp
void Camera::GetMatrices(Matrix& view, Matrix& projection, const Viewport& viewport, const Vector3& origin) const
{
// Create projection matrix
const float aspect = _customAspectRatio <= 0.0f ? viewport.GetAspectRatio() : _customAspectRatio;
if (_usePerspective)
{
const float aspect = _customAspectRatio <= 0.0f ? viewport.GetAspectRatio() : _customAspectRatio;
Matrix::PerspectiveFov(_fov * DegreesToRadians, aspect, _near, _far, projection);
}
else
{
Matrix::Ortho(viewport.Width * _orthoScale, viewport.Height * _orthoScale, _near, _far, projection);
const float orthoSize = (_orthoSize > 0.0f ? _orthoSize : viewport.Height) * _orthoScale;
Matrix::Ortho(orthoSize * aspect, orthoSize, _near, _far, projection);
}
// Create view matrix