shells/fem/shapeFunction.h

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/* -*- C -*- */
/*
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 *                                   Fehmi Cirak
 *                        California Institute of Technology
 *                           (C) 2004 All Rights Reserved
 *
 * <LicenseText>
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
#ifndef SHAPEFUNCTION_H
#define SHAPEFUNCTION_H


#ifdef __cplusplus
namespace shells {
#define DECLARE_EXTERN extern "C"
#else
#define DECLARE_EXTERN extern
#endif

    typedef struct ShapeFunctionS {
        double   *funct;                    /* function value */
        double   *deriv1[2];                /* first derivative */
        double   *deriv2[3];                /* second derivative */ 
    } ShapeFunction;


    typedef struct InterpolationS {
        struct SVertexS  **csubno;          /* vertices used for interpolation */   
        int                ivals;           /* number of vertices in **csubno */
        
        ShapeFunction     *shape,           /* shape functions for the center */
                          *shape7Gp[7], 
                          *shapeVtx0,       /* shape functions for the vertices */
                          *shapeVtx1,
                          *shapeVtx2,                      
                          *shapeEdge[3][3]; /* shape functios on the edges */
    } Interpolation;
    
    struct SElementS;
    
    DECLARE_EXTERN void rotateInternalNumberingElement(struct SElementS *);
    DECLARE_EXTERN void shapeFunctionElement(struct SElementS *);

#ifdef __cplusplus
}
#endif
#undef DECLARE_EXTERN

#endif

---