gls_cylinder.h

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

  \par Copyright Information

  Copyright (c) 2017 by The DiSTI Corporation.<br>
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*/
#ifndef _GLS_CYLINDER_H
#define _GLS_CYLINDER_H

#include "display.h"
#include "dynamic_array.h"
#include "glpolygon.h"
#include "gls_color.h"
#include "gls_cpp_lang_support.h"
#include "gls_include.h"
#include "group.h"
#include "timer.h"

#define DEF_CYLINDER_SEGMENTS 1
#define DEF_CYLINDER_FACES 30
#define DEF_CYLINDER_FACE_START 0.0f
#define DEF_CYLINDER_FACE_END 360.0f
#define DEF_CYLINDER_TOP_SIZE 1.0f
#define DEF_CYLINDER_BOTTOM_SIZE 1.0f
#define DEF_CYLINDER_TOP_FACE false
#define DEF_CYLINDER_BOTTOM_FACE false

namespace disti
{
/**
    Cylinder Initializers
*/
typedef enum
{
    GLS_CYLINDER_COLOR = GLS_LAST_INITIALIZER + 1,
    GLS_CYLINDER_SEGMENTS,
    GLS_CYLINDER_FACES,
    GLS_CYLINDER_FACE_START,
    GLS_CYLINDER_FACE_END,
    GLS_CYLINDER_TOP_SIZE,
    GLS_CYLINDER_BOTTOM_SIZE,
    GLS_CYLINDER_TOP_FACE,
    GLS_CYLINDER_BOTTOM_FACE,
    GLS_CYLINDER_RADII
} GLS_Cylinder_Initializers;

/**
    The Cylinder class.  Implements Cylinder primitive
*/

class GlsCylinder : public DisplayObject
{
public:
    typedef DisplayObject _BaseClass;
    friend class GlsCylinderEditor;

private:
    /** Initialize data to default values */
    void CommonConstructorInit( void );
    /** Disabling default implicit assignment and copy constructors */
    GlsCylinder& operator=( const GlsCylinder& that ) DISTI_SPECIAL_MEM_FUN_DELETE;
    GlsCylinder( const GlsCylinder& ) DISTI_SPECIAL_MEM_FUN_DELETE;

    void CopyGeometryInternal( GlsCylinder* src );
    void CopyPropertiesInternal( GlsCylinder* src );

    /* 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 );

    bool EndCapFirstPick( unsigned int startIndex, const Vector& point, const Vector& directionVector, Vector* collisionPoint );

    void UpdateBestPickStatus( const Vector& point, const Vector& directionVector, Vector& tempCollisionPoint, Vector& closestPoint, float& pickDistance );

protected:
    Vector _radii[ 3 ]; /** Cylinder radii.  3 vectors */

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

    float _faceStartDeg, _faceEndDeg; /** 0-360, where 0 is positive x-axis of cylinder */
    float _topSize, _bottomSize;      /** 0 - 1, scale of top and bottom ends */

    unsigned int _segments, /** Number of segments used to draw the cylinder */
        _faces;             /** Number of faces used to draw the cylinder */

    bool _needsRecalculate; /** True when the cylinder vertices need to be recalculated */
    bool _needsResize;      /** True when the cylinder needs to be resized */
    bool _topFace;          /** True when there is a circle on top of the cylinder */
    bool _bottomFace;       /** True when there is a circle on bottom of the cylinder */

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

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

    /** Reallocates the vertices of the cylinder */
    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

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

    /** Allocate a (blank) GlsCylinder object */
    GLS_EXPORT GlsCylinder( bool newGlsCylinder = true );

    /** The copy constructor for GlsCylinder
      * 
      * \param that          The GlsCylinder object that is being copied
      * \param generateName  Whether or not to generate a new instance name
      */
    GLS_EXPORT GlsCylinder( const GlsCylinder& that, const bool generateName );

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

    virtual GLS_EXPORT void SetAvailableAttributes( unsigned int 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 = 0 );

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

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

    /* Usually copies the attributes except for geometry attributes from one object to another. 
      * However, since the GlsCylinder'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 );

    using _BaseClass::GetFillColor;

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

    /** Sets the starting degree value for the cylinder
      * \param deg  Degree value to which to set _faceStartDeg
      */
    virtual GLS_EXPORT void FaceStartAngle( float deg );

    /** Gets the starting degree value for the cylinder
      * \return  Returns the value of _faceStartDeg
      */
    virtual GLS_EXPORT float FaceStartAngle();

    /** Sets the ending degree value for the cylinder
      * \param deg  Degree value to which to set _faceEndDeg
      */
    virtual GLS_EXPORT void FaceEndAngle( float deg );

    /** Gets the ending degree value for the cylinder
      * \return  Returns the value of _faceEndDeg
      */
    virtual GLS_EXPORT float FaceEndAngle();

    /** Sets the size factor for the top of the cylinder
      * \param size  Factor to which to set _topSize
      */
    virtual GLS_EXPORT void TopSizeFactor( float size );

    /** Gets the size factor for the top of the cylinder
      * \return  Returns the value of _topSize
      */
    virtual GLS_EXPORT float TopSizeFactor();

    /** Sets the size factor for the bottom of the cylinder
      * \param size  Factor to which to set _bottomSize
      */
    virtual GLS_EXPORT void BottomSizeFactor( float size );

    /** Gets the size factor for the bottom of the cylinder
      * \return  Returns the value of _bottomSize
      */
    virtual GLS_EXPORT float BottomSizeFactor();

    /** Sets the number of vertical segments per face
      * \param segments  Desired number of segments to which to set _segments
      */
    virtual GLS_EXPORT void Segments( unsigned int segments );

    /** Gets the number of vertical segments per face
      * \return  Returns the value of _segments
      */
    virtual GLS_EXPORT unsigned int Segments();

    /** Sets the number of faces around the cylinder
      * \param faces  Desired number of faces to which to set _faces
      */
    virtual GLS_EXPORT void Faces( unsigned int faces );

    /** Gets the number of faces around the cylinder
      * \return  Returns the value of _faces
      */
    virtual GLS_EXPORT unsigned int Faces();

    /** Sets whether or not to draw a top face on the cylinder
      * \param top  Presences of a top face, value assigned to _topFace
      */
    virtual GLS_EXPORT void TopFace( bool top );

    /** Gets whether or not to draw a top face on the cylinder
      * \return  Presences of a top face, returns the value of to _topFace
      */
    virtual GLS_EXPORT bool TopFace();

    /** Sets whether or not to draw a bottom face on the cylinder
      * \param bottom  Presences of a bottom face, value assigned to _bottomFace
      */
    virtual GLS_EXPORT void BottomFace( bool bottom );

    /** Gets whether or not to draw a bottom face on the cylinder
      * \return  Presences of a bottom face, returns the value of to _bottomFace
      */
    virtual GLS_EXPORT bool BottomFace();

    /** Gets the radii vectors for the cylinder
      * \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 cylinder
      * \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
};

} // namespace disti

#endif