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Add Camera.UnprojectPoint method

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This commit is contained in:
Wojtek Figat
2023-05-28 23:20:39 +02:00
parent 2149995116
commit f60007da83
2 changed files with 31 additions and 0 deletions
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14
Source/Engine/Level/Actors/Camera.cpp
View File

@@ -151,6 +151,20 @@ void Camera::ProjectPoint(const Vector3& worldSpaceLocation, Float2& cameraViewp
cameraViewportSpaceLocation = Float2(clipSpaceLocation);
}
void Camera::UnprojectPoint(const Float2& gameWindowSpaceLocation, float depth, Vector3& worldSpaceLocation) const
{
UnprojectPoint(gameWindowSpaceLocation, depth, worldSpaceLocation, GetViewport());
}
void Camera::UnprojectPoint(const Float2& cameraViewportSpaceLocation, float depth, Vector3& worldSpaceLocation, const Viewport& viewport) const
{
Matrix v, p, ivp;
GetMatrices(v, p, viewport);
Matrix::Multiply(v, p, ivp);
ivp.Invert();
viewport.Unproject(Vector3(cameraViewportSpaceLocation, depth), ivp, worldSpaceLocation);
}
bool Camera::IsPointOnView(const Vector3& worldSpaceLocation) const
{
Vector3 cameraUp = GetTransform().GetUp();

17
Source/Engine/Level/Actors/Camera.h
View File

@@ -150,6 +150,23 @@ public:
/// <param name="viewport">The viewport.</param>
API_FUNCTION() void ProjectPoint(const Vector3& worldSpaceLocation, API_PARAM(Out) Float2& cameraViewportSpaceLocation, API_PARAM(Ref) const Viewport& viewport) const;
/// <summary>
/// Converts a game window-space point into a corresponding point in world space.
/// </summary>
/// <param name="gameWindowSpaceLocation">The input game window coordinates (XY in screen pixels).</param>
/// <param name="depth">The input camera-relative depth position (eg. clipping plane).</param>
/// <param name="worldSpaceLocation">The output world-space location (XYZ in world).</param>
API_FUNCTION() void UnprojectPoint(const Float2& gameWindowSpaceLocation, float depth, API_PARAM(Out) Vector3& worldSpaceLocation) const;
/// <summary>
/// Converts a camera viewport-space point into a corresponding point in world space.
/// </summary>
/// <param name="cameraViewportSpaceLocation">The input camera viewport-space location (XY in screen pixels).</param>
/// <param name="depth">The input camera-relative depth position (eg. clipping plane).</param>
/// <param name="worldSpaceLocation">The output world-space location (XYZ in world).</param>
/// <param name="viewport">The viewport.</param>
API_FUNCTION() void UnprojectPoint(const Float2& cameraViewportSpaceLocation, float depth, API_PARAM(Out) Vector3& worldSpaceLocation, API_PARAM(Ref) const Viewport& viewport) const;
/// <summary>
/// Checks if the 3d point of the world is in the camera's field of view.
/// </summary>