CameraNode.hh

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//=============================================================================
//
//  CLASS CameraNode
//
//=============================================================================


#ifndef ACG_CAMERAVIS_NODE_HH
#define ACG_CAMERAVIS_NODE_HH

//== INCLUDES =================================================================


#include <ACG/Scenegraph/BaseNode.hh>
#include <ACG/Scenegraph/DrawModes.hh>
#include <ACG/GL/GLPrimitives.hh>
#include <ACG/GL/globjects.hh>
#include <string>
#include <vector>

#include <ACG/Math/QuaternionT.hh>

#include <OpenFlipper/common/ObjectTypeDLLDefines.hh>

//== NAMESPACES ===============================================================

namespace ACG {
namespace SceneGraph {

//== CLASS DEFINITION =========================================================


class OBJECTTYPEDLLEXPORT CameraNode: public BaseNode {

public:

    CameraNode( BaseNode* _parent = 0, std::string _name = "<CameraVis>");

    virtual ~CameraNode();

    ACG_CLASSNAME( CameraNode);

    DrawModes::DrawMode availableDrawModes() const;

    void boundingBox(Vec3d& _bbMin, Vec3d& _bbMax);

    void draw(GLState& _state, const DrawModes::DrawMode& _drawMode);

    void getRenderObjects(IRenderer* _renderer, GLState& _state, const DrawModes::DrawMode& _drawMode, const Material* _mat);

    void pick(GLState& _state, PickTarget _target);

    void setModelView(ACG::GLMatrixd _modelView) { modelView_ = _modelView; modelViewInv_ = _modelView; modelViewInv_.invert(); update_vbo_ = true; }

    const ACG::GLMatrixd& modelview() const {return modelView_;}

    void setProjection(ACG::GLMatrixd _projection) { projection_ = _projection; update_vbo_ = true; }

    const ACG::GLMatrixd& projection() const {return projection_;}

    OM_DEPRECATED("setSize() is redundant, because it is already defined by the projection matrix.")
    void setSize(int _w, int _h) { /*obsolete*/ }

    void setEncodedView(QString _encodedView) { encodedView_ = _encodedView; }

    OM_DEPRECATED("setFarPlane() is redundant, because it is already defined by the projection matrix.")
    void setFarPlane(double _far) { /*obsolete*/ }

    OM_DEPRECATED("setNearPlane() is redundant, because it is already defined by the projection matrix.")
    void setNearPlane(double _near) { /*obsolete*/ }

    QString getEncodedView() { return encodedView_; }

    void showFrustum(bool _showFrustum) { showFrustum_ = _showFrustum; }

    bool showFrustum() { return showFrustum_; }


private:

    void updateVBO();

    void updateBoundingBoxes();

    // recalculate frustum positions in world space
    void updateFrustumWS();

    OpenMesh::Vec3d bbmin_;
    OpenMesh::Vec3d bbmax_;

    ACG::GLMatrixd modelView_;
    ACG::GLMatrixd modelViewInv_;
    ACG::GLMatrixd projection_;

    GLCylinder* cylinder_;
    GLCone*     cone_;
    float       axis_length_;

    GeometryBuffer      vbo_;
    IndexBuffer         ibo_;
    VertexDeclaration   vdecl_;
    bool                update_vbo_;
    std::vector<Vec4f>  vboData_; // 8 frustum vertices + camera position
    int                 offsetTris_; // offsets into index buffer
    int                 offsetLines_;
    int                 offsetFront_;

    QString encodedView_;

    bool showFrustum_;
};



//=============================================================================
} // namespace SceneGraph
} // namespace ACG

//=============================================================================
#endif // ACG_CameraVis_NODE_HH
//=============================================================================