53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
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#pragma once
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#include "base.h"
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#include "lib_begin.h"
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namespace cgv {
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namespace base {
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/** interface for an attachment slot that can store a base pointer */
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class CGV_API attach_slot
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{
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protected:
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/// allow to attach some object to group
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base_ptr attachment;
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/// allow to add user data to the attachment
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void* attachment_user_data;
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public:
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/// init the user data
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attach_slot();
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/// attach object to attachment slot
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void attach(base_ptr attachment_object, void* user_data = 0);
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/// attach object to attachment slot
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void attach(base_ptr attachment_object, int user_data);
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/// return current attachment
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base_ptr get_attachment() const;
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/// return current attachment
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void* get_attachement_data() const;
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/// return current attachment
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int get_attachement_data_int() const;
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};
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//! function to attach an object to an object of type attach_slot.
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/*! Return whether the slot_object implements the attach_slot interface
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and could retreive the attachment. */
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extern CGV_API bool attach(base_ptr slot_object, base_ptr attachment_object, void* user_data = 0);
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extern CGV_API bool attach(base_ptr slot_object, base_ptr attachment_object, int user_data);
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//! query the attachment of an attach_slot object.
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/*! If the slot_object is not derived from the attach_slot interface,
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return an empty base_ptr. */
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extern CGV_API base_ptr get_attachment(base_ptr slot_object);
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//! query the user data of the attachment of an attach_slot object.
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/*! If the slot_object is not derived from the attach_slot interface,
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return the null pointer. */
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extern CGV_API void* get_attachment_data(base_ptr slot_object);
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extern CGV_API int get_attachment_data_int(base_ptr slot_object);
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}
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}
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#include <cgv/config/lib_end.h>
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