gls_sphere.h

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/*! \file
  \brief  The disti::GlsSphere class.

  \par Copyright Information

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*/
#ifndef _GLS_SPHERE_H
#define _GLS_SPHERE_H

#include "display.h"
#include "dynamic_array.h"
#include "gls_color.h"
#include "gls_cpp_lang_support.h"
#include "gls_include.h"

#define DEF_SPHERE_STACKS 10
#define DEF_SPHERE_SLICES 10
#define DEF_SPHERE_SLICE_START 0.0f
#define DEF_SPHERE_SLICE_END 360.0f
#define DEF_SPHERE_STACK_START 0.0f
#define DEF_SPHERE_STACK_END 180.0f

namespace disti
{
/** gls Sphere Mapping */
typedef enum
{
    GLS_SPHERE_SPHERICAL_MAP, /**< Spherical texture map */
    GLS_SPHERE_CYLINDER_MAP   /**< Cylindrical texture map */
} glsSphereMapping_e;

/**
    Sphere Initializers
*/
typedef enum
{
    GLS_SPHERE_MAPPING = GLS_LAST_INITIALIZER + 1,
    GLS_SPHERE_COLOR,
    GLS_SPHERE_STACKS,
    GLS_SPHERE_SLICES,
    GLS_SPHERE_SLICE_START,
    GLS_SPHERE_SLICE_END,
    GLS_SPHERE_STACK_START,
    GLS_SPHERE_STACK_END,
    GLS_SPHERE_RADII
} GLS_Sphere_Initializers;

/** The Sphere class.  Implements Sphere primitive */
class GlsSphere : public DisplayObject
{
private:
    /** Factors out common code shared by the various glsSphere constructors */
    void CommonConstructorInit();
    /** Assignment operator not implemented. Use CloneObject() or the copy constructor instead. */
    GlsSphere& operator=( const GlsSphere& ) DISTI_SPECIAL_MEM_FUN_DELETE;
    GlsSphere( const GlsSphere& ) DISTI_SPECIAL_MEM_FUN_DELETE;

protected:
    Vector _radii[ 3 ]; /** Sphere radii */

    GlsColor _objectColor; /** Fill color of object */

    float _sliceStartDeg, _sliceEndDeg; /** 0-180, where 0 is the bottom and 180 the top of the sphere */
    float _stackStartDeg, _stackEndDeg; /** 0-360, where 0 is the positive x-axis of the sphere */

    unsigned int _stacks, /** Number of stacks used to draw the sphere */
        _slices;          /** Number of slices used to draw the sphere */

    bool _needsRecalculate; /** True when the sphere vertices need to be recalculated */
    bool _needsResize;      /** True when the sphere needs to be resized */

    glsSphereMapping_e _textureMappingType; /** Texture mapping method */

    /** Sets the resize and recalculate flags, causing the sphere to be resized and recalculated
      * the next time the sphere draws
      */
    GLS_EXPORT void SetResizeRecalculate();

    /** Recalculates the sphere vertices values */
    GLS_EXPORT void Recalculate( void );

    /** Reallocates the vertices of the sphere */
    GLS_EXPORT void Resize( void );

    /* See base class */
    virtual GLS_EXPORT void SetValue( int spec, va_list& args );

#ifdef GLES
    /** Set a single attribute from the GLO file.
     * \param data The attribute to set and its associated data.
     */
    virtual GLS_EXPORT void SetFromGloData( GlsGloFileAttribute& data );
#endif

private:
    /* Utility routine used by Hit.  Performs a "FirstHit" test, which performs a hit test on the object
      * but does not guarantee that the collision point returned by Hit is the closest collision point
      * to the observer
      * \param point            The logical coordinate of the click, relative to the object
      * \param directionVector  The direction of the pick vector
      * \param collisionPoint   Set to the point on the object hit by directionVector
      * \return boolean indicating if the object was hit by the mouse
      */
    bool FirstHit( const Vector& point, const Vector& directionVector, Vector* collisionPoint );

    /* Utility routine used by Hit.  Performs a "BestHit" test, which performs a hit test on the object
      * and guarantees that the collision point returned by Hit is the closest collision point to the observer.
      * \param point            The logical coordinate of the click, relative to the object
      * \param directionVector  The direction of the pick vector
      * \param collisionPoint   Set to the point on the object hit by directionVector
      * \return boolean indicating if the object was hit by the mouse
      */
    bool BestHit( const Vector& point, const Vector& directionVector, Vector* collisionPoint );

public:
    typedef DisplayObject _BaseClass;

    friend class GlsSphereEditor;

    /** Constructor.  Creates a new GlsSphere object at given coordinates.
      * \param x    x-coordinate of new GlsSphere
      * \param y    y-coordinate of new GlsSphere
      * \param z    z-coordinate of new GlsSphere
      */
    GLS_EXPORT GlsSphere( float x, float y, float z );

    /** Allocate a (blank) GlsSphere object */
    GLS_EXPORT GlsSphere( bool newGlsSphere = true );

    GLS_EXPORT GlsSphere( const GlsSphere& that, const bool generateNames );

    /** Destroy a GlsSphere object */
    virtual GLS_EXPORT ~GlsSphere( void );

    virtual GLS_EXPORT void SetAvailableAttributes( unsigned int value );

    /** Gets the texture mapping method.
      * \return  Enumerative representation of texture mapping method
      */
    GLS_EXPORT glsSphereMapping_e TextureMappingType( void );

    /* Unhides base class implementation. */
    using _BaseClass::TextureIndex;

    /** See base class */
    virtual GLS_EXPORT void TextureIndex( int index );

    /** Sets the texture mapping type 
      * \param value  The texture mapping value (e.g. cylindrical or spherical)
     */
    GLS_EXPORT void TextureMappingType( glsSphereMapping_e value );

    /** Finds three coplanar points and the surface normal, if possible.  This calculation is performed using the
      * Vertices() of this object.  Used in the editor to determine how to map a texture onto an object.
      * \param p1  Returns a point on the plane
      * \param p2  Returns a point on the plane
      * \param p3  Returns a point on the plane
      * \param planeVector Returns the surface normal of the plane
      * \return  True if 3 coplanar points were found
      */
    virtual GLS_EXPORT bool GetPlaneVectorPoints( Vertex& p1, Vertex& p2, Vertex& p3, Vertex& planeVector );

    /* See base class */
    virtual GLS_EXPORT void CalculateTextureCoordinates( void );

    /* See base class */
    virtual GLS_EXPORT void GetExtents( float& x, float& y, float& z, float& x1, float& y1, float& z1 );

    /* See base class */
    virtual GLS_EXPORT void Draw( void );

    /* See base class */
    virtual GLS_EXPORT bool Hit( float x, float y, float z, float scale, const Vector& directionVector, Vector* collisionPoint );

    /* Unhides base class implementation. */
    using _BaseClass::Scale;

    /* See base class */
    virtual GLS_EXPORT void Scale( float px, float py, float pz, Vertex* anchor, int handleBar );

    /* Usually copies the attributes except for geometry attributes from one object to another. 
      * However, since the GlsSphere's geometry defines its properties, its geometry is copied.
      * Used by the undo mechanism to undo most attribute change operations.
      * \param src   The object to copy properties from */
    virtual GLS_EXPORT void CopyProperties( DisplayObject* src );

    /* See base class */
    virtual GLS_EXPORT void CopyGeometry( DisplayObject* src );

    /* See base class */
    virtual GLS_EXPORT DisplayObject* CloneObject( bool generateNames = false );

    /* Unhides base class implementation. */
    using _BaseClass::Rotate;

    /* See base class */
    virtual GLS_EXPORT void Rotate( const Vector& orig, float angle, const Vector& axis );

    /* Unhides base class implementation. */
    using _BaseClass::SetFillColor;

    /* See base class */
    virtual GLS_EXPORT void SetFillColor( const GlsColor& color );

    /* Unhides base class implementation. */
    using _BaseClass::GetFillColor;

    /* See base class */
    virtual GLS_EXPORT GlsColor GetFillColor( void );

    /** Sets the starting degree value for the stacks
      * \param deg  Degree value to which to set _stackStartDeg
      */
    virtual GLS_EXPORT void StackStartAngle( float deg );

    /** Gets the starting degree value for the stacks
      * \return  Returns the value of _stackStartDeg
      */
    virtual GLS_EXPORT float StackStartAngle();

    /** Sets the ending degree value for the stacks
      * \param deg  Degree value to which to set _stackEndDeg
      */
    virtual GLS_EXPORT void StackEndAngle( float deg );

    /** Gets the ending degree value for the stacks
      * \return  Returns the value of _stackEndDeg
      */
    virtual GLS_EXPORT float StackEndAngle();

    /** Sets the starting degree value for the slices
      * \param deg  Degree value to which to set _sliceStartDeg
      */
    virtual GLS_EXPORT void SliceStartAngle( float deg );

    /** Gets the starting degree value for the slices
      * \return  Returns the value of _sliceStartDeg
      */
    virtual GLS_EXPORT float SliceStartAngle();

    /** Sets the ending degree value for the slices
      * \param deg  Degree value to which to set _sliceEndDeg
      */
    virtual GLS_EXPORT void SliceEndAngle( float deg );

    /** Gets the ending degree value for the slices
      * \return  Returns the value of _sliceEndDeg
      */
    virtual GLS_EXPORT float SliceEndAngle();

    /** Sets the number of horizontal slices
      * \param slices  Desired number of slices to which to set _slices
      */
    virtual GLS_EXPORT void Slices( unsigned int slices );

    /** Gets the number of horizontal slices
      * \return  Returns the value of _slices
      */
    virtual GLS_EXPORT unsigned int Slices();

    /** Sets the number of vertical stacks
      * \param stacks Desired number of stacks to which to set _stacks
      */
    virtual GLS_EXPORT void Stacks( unsigned int stacks );

    /** Gets the number of vertical stacks
      * \return  Returns the value of _stacks
      */
    virtual GLS_EXPORT unsigned int Stacks();

    /** Gets the radii vectors for the sphere
      * \param r1  First radius vector (width)
      * \param r2  First radius vector (height)
      * \param r3  First radius vector (depth)
      */
    virtual GLS_EXPORT void GetRadii( Vector& r1, Vector& r2, Vector& r3 );

    /** Sets the radii vectors for the sphere
      * \param r1  First radius vector (width)
      * \param r2  First radius vector (height)
      * \param r3  First radius vector (depth)
      */
    virtual GLS_EXPORT void SetRadii( const Vector& r1, const Vector& r2, const Vector& r3 );

#ifndef GLES
    /* See base class */
    virtual GLS_EXPORT InterfaceListType* GetCppInterfaceDescription( InterfaceListType* addToThisList = NULL );

    /* See base class */
    virtual GLS_EXPORT void GetCppInterfaceDescriptionFree( InterfaceListType* array );
#endif
};

#define DEF_SPHERE_MAPPING GLS_SPHERE_SPHERICAL_MAP

/** Defines metadata for glsSphereMapping_e */
class DistiAttributeSphereMappingTypeEnum : public DistiAttributeEnum<GlsSphere, glsSphereMapping_e, glsSphereMapping_e>
{
public:
    GLS_EXPORT DistiAttributeSphereMappingTypeEnum( GlsSphere* frame, SetMethodType setMethod, GetMethodType getMethod, const AttributeName& name );
    virtual GLS_EXPORT ~DistiAttributeSphereMappingTypeEnum();
};

} // namespace disti

#endif