GetActiveCameraMatrix()

std::tuple< glm::mat4, glm::mat4, unsigned int, float > Spices::Renderer::GetActiveCameraMatrix ( FrameInfo & frameInfo )

protectedinherited

Get The activated camera entity's view matrix and projection matrix.

Parameters

[in]

frameInfo

The current frame data.

Returns

Returns a tuple of view matrix, projection matrix, stable frames, fov.

Init viewmatrix and projectionmatrix.

Iter CameraComponent, finding a active camera.

Viewmaterix is the inverse of camera's modelmatrix.

Since we enable Negative viewport, we do not need reverse y axis here.

Break if finded.

Continue if not finded.

Throwout a warning if not a active camera.

Init viewmatrix and projectionmatrix.

Iter CameraComponent, finding a active camera.

Viewmaterix is the inverse of camera's modelmatrix.

Since we enable Negative viewport, we do not need reverse y axis here.

Break if finded.

Continue if not finded.

Throwout a warning if not a active camera.

Definition at line 304 of file Renderer.cpp.

    {
        SPICES_PROFILE_ZONE;
 
        glm::mat4 invViewMat       = glm::mat4(1.0f);
        glm::mat4 projectionMat    = glm::mat4(1.0f);
        unsigned int stableFrames  = 0;
        float fov                  = 0.0f;
 
        bool find = false;
 
        IterWorldCompWithBreak<CameraComponent>(
            frameInfo, 
            [&](
            int                   entityId  , 
            TransformComponent&   transComp , 
            CameraComponent&      camComp
            ){
 
            if (camComp.IsActive())
            {
                invViewMat    = transComp.GetModelMatrix();
                projectionMat = camComp.GetCamera()->GetPMatrixReverseZ();
                stableFrames  = camComp.GetCamera()->GetStableFrames();
                fov           = glm::radians(camComp.GetCamera()->GetPerspectiveParam().fov);
 
                //projectionMat[1][1] *= -1;
 
                find = true;
                return find;
            }
 
            return false;
        });
 
        if (!find)
        {
            std::stringstream ss;
            ss << m_RendererName << ": " << "not find a active camera in world, please check again";
 
            SPICES_CORE_WARN(ss.str())
        }
 
        return std::make_tuple(invViewMat, projectionMat, stableFrames, fov);
    }

References Spices::CameraComponent::IsActive(), and Spices::Renderer::m_RendererName.