54 lines
1.1 KiB
C
54 lines
1.1 KiB
C
#ifndef __FIGURE_H__
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#define __FIGURE_H__
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#include "Object.h"
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typedef struct Figure
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{
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struct Figure_vtable
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{
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/* derived from Object */
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const char* (*type) ();
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struct Figure* (*clone) (const struct Figure *this);
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void (*destroy) (struct Figure *this);
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/* Figure virtual methods */
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void (*draw) (const struct Figure *this);
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double (*area) (const struct Figure *this);
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} *vtable;
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} Figure;
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static inline const char* Figure_type (const Figure *this)
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{
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return this->vtable->type ();
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}
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static inline Figure* Figure_clone (const Figure *this)
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{
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return this->vtable->clone (this);
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}
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static inline void Figure_destroy (Figure *this)
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{
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this->vtable->destroy (this);
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}
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static inline void Figure_draw (const Figure *this)
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{
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this->vtable->draw (this);
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}
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static inline double Figure_area (const Figure *this)
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{
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return this->vtable->area (this);
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}
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/* considered to be protected */
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void Figure_constructor (Figure *this);
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void Figure_destructor (Figure *this);
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void Figure_copy (Figure *dest, const Figure *src);
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#endif // __FIGURE_H__
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