GLESPerspectiveView.h

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/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */
 
#ifndef META_OCEAN_RENDERING_GLES_PERSPECTIVE_VIEW_H
#define META_OCEAN_RENDERING_GLES_PERSPECTIVE_VIEW_H
 
#include "ocean/rendering/glescenegraph/GLESceneGraph.h"
#include "ocean/rendering/glescenegraph/GLESView.h"
 
#include "ocean/rendering/PerspectiveView.h"
 
namespace Ocean
{
 
namespace Rendering
{
 
namespace GLESceneGraph
{
 
/**
 * This class implements a perspective view for GLESceneGraph.
 * @ingroup renderinggles
 */
class OCEAN_RENDERING_GLES_EXPORT GLESPerspectiveView :
    virtual public GLESView,
    virtual public PerspectiveView
{
    friend class GLESFactory;
 
    public:
 
        /**
         * Returns the horizontal field of view in radian.
         * @see View::fovX().
         */
        Scalar fovX() const override;
 
        /**
         * Sets the horizontal field of view in radian.
         * @see View::setFovX().
         */
        bool setFovX(const Scalar fovx) override;
 
        /**
         * Returns a viewing ray into the scene.
         * @see View::viewingRay().
         */
        Line3 viewingRay(const Scalar x, const Scalar y, const unsigned int width, const unsigned int height) const override;
 
        /**
         * Sets the projection matrix explicitly.
         * @see PerspectiveView::setProjectionMatrix().
         */
        void setProjectionMatrix(const SquareMatrix4& clip_T_view) override;
 
    protected:
 
        /**
         * Creates a new perspective view.
         */
        GLESPerspectiveView();
 
        /**
         * Destructs a perspective view.
         */
        ~GLESPerspectiveView() override;
 
        /**
         * (Re-)calculates the view projection matrix.
         * @see GLESView::calculateProjectionMatrix().
         */
        bool calculateProjectionMatrix() override;
 
    protected:
 
        /// The view's horizontal field of view in radian, with range (0, PI)
        Scalar fovX_;
};
 
}
 
}
 
}
 
#endif // META_OCEAN_RENDERING_GLES_PERSPECTIVE_VIEW_H