arc.c

AutoCAD DWG-file viewer

/****************************************************************/
/*			COPYRIGHT NOTICE			*/
/*			----------------			*/
/*  All software in this listing remain the strict copyright	*/
/*  of Ilija Kovacevic and cannot be copied or used in any way	*/
/*  except by written permission of Ilija Kovacevic.		*/
/*								*/
/*	Copyright (c) 1992 Ilija Kovacevic			*/
/*	www.kov.com   email [e-mail]			*/
/****************************************************************/

#include "dwgin.h"


PUBLIC AcadArc *AcadArc__create( void )

{
return( ( AcadArc * )get_memory( sizeof( AcadArc ) ) );
}


PUBLIC void AcadArc__delete( AcadArc *me )

{
free( ( char * )me );
}


PUBLIC int AcadArc__length( AcadArc *me )

{
return( me->common.size );
}


PUBLIC void AcadArc__read( AcadArc *me )

{
AcadEntity__read_elevation_etc( &me->common,true,true );
get_DOUBLE( &me->x );
get_DOUBLE( &me->y );
get_DOUBLE( &me->radius );
get_DOUBLE( &me->start_angle );
get_DOUBLE( &me->end_angle );
if ( ( __drawing->acad10 OR __drawing->acad11 ) AND me->common.pflags&0x1 ) AcadEntity__get_ucs_directions( &me->common );
}


PUBLIC void AcadArc__dump_to_debug_file( AcadArc *me )

{
dprintf( "ARC\n" );
dprintf( "\tat %lf,%lf,%lf radius %lf\n",me->x,me->y,me->common.elevation,me->radius );
dprintf( "\tstart angle %lf end angle %lf\n",me->start_angle,me->end_angle );
}


PUBLIC void AcadArc__dxfout( AcadArc *me )

{
dxf_string( 0,"ARC" );
AcadEntity__dxfout( &me->common );
dxf_DOUBLE( 10,me->x );
dxf_DOUBLE( 20,me->y );
if ( !__drawing->header->flatland ) dxf_DOUBLE( 30,me->common.elevation );
dxf_DOUBLE( 40,me->radius );
dxf_DOUBLE( 50,rad_to_degrees( me->start_angle ) );
dxf_DOUBLE( 51,rad_to_degrees ( me->end_angle ) );
AcadEntity__dxfout_ucs( &me->common );
}


PUBLIC void AcadArc__write( AcadArc *me )

{
int size;

put_UINT8( 8 );  /* LINE TYPE */
size = sizeof( DOUBLE )*5+1;
if ( me->common.ucs ) size += sizeof( DOUBLE )*3;
AcadEntity__write_elevation_etc( &me->common,false,true,size );
put_DOUBLE( me->x );
put_DOUBLE( me->y );
put_DOUBLE( me->radius );
put_DOUBLE( me->start_angle );
put_DOUBLE( me->end_angle );
if ( me->common.ucs ) AcadEntity__put_ucs_directions( &me->common );
}