#ifndef CNS_RESTRICTED_ZONE_H
#define CNS_RESTRICTED_ZONE_H

#include "cns.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef struct CNS_RestrictedZoneConstraint * CNS_RestrictedZoneConstraintPtr ;

/**
 * Creates a zone restriction constraint.
 * This constraint forces a given set of parts to be nested inside restricted zones on the sheet
 * and not anywhere on the whole sheet.
 */

CNS_EXPORT CNS_RestrictedZoneConstraintPtr CNS_API
CNS_CreateRestrictedZoneConstraint(CNS_LaunchingOrderPtr order);

/**
 * Define a zone in the sheet where parts can be nested according to the constraint.
 * Calling the function several times on the same sheet will allow all the defined zones.
 */
CNS_EXPORT void CNS_API CNS_SheetAddRestrictedZone(
        CNS_RestrictedZoneConstraintPtr constraint,
        CNS_SheetPtr sheet,
        unsigned number_of_elements,
        const CNS_Element * elements);

/**
 * Same as CNS_SheetAddRestrictedZone with simplified API for rectangular zones
 */

CNS_EXPORT void CNS_API CNS_SheetAddBoxRestrictedZone(
        CNS_RestrictedZoneConstraintPtr constraint,
        CNS_SheetPtr sheet,
        CNS_Point bottom_left, CNS_Point top_right);

/**
 * Set restriction constraint on the part.
 * This part will be restricted to specific sheet zones that were
 * added using CNS_SheetAddRestrictedZone
 */

CNS_EXPORT void CNS_API CNS_SetZoneRestrictedPart(
        CNS_RestrictedZoneConstraintPtr constraint,
        CNS_PartPtr part);


CNS_EXPORT void CNS_API CNS_ForcePartOnBottomBorder(CNS_PartPtr part);

#ifdef __cplusplus
}
#endif

#endif