ivp_compact_surface.hxx

hl2 source code. Do not use it illegal.

// Copyright (C) Ipion Software GmbH 1999-2000. All rights reserved.

// IVP_EXPORT_PUBLIC

/********************************************************************************
 *  Filename:	    ivp_compact_surface.hxx
 *  Description:    This file contains the most important class to describe an
 *		    object's geometrical (and thus physical) shape, the COMPACT
 *		    SURFACE.
 *  Classes:	    IVP_Compact_Surface
 ********************************************************************************/

#ifndef _IVP_COMPACT_SURFACE_INCLUDED
#define _IVP_COMPACT_SURFACE_INCLUDED

class IVP_Compact_Ledgetree_Node;


#define IVP_COMPACT_SURFACE_DEVIATION_STEP_SIZE (1.0f / 250.0f )

/********************************************************************************
 *  Class:	    IVP_Compact_Surface
 *  Description:    The compact surface class is the most important class for all
 *		    objects in the Ipion engine as it describes the geometrical
 *		    topology and some additional basic values.
 *  Note:	    This class is just the HEADER for a far more complex (and
 *		    internal) data structure. So DO NOT change any of these
 *		    variables or you will certainly break the engine's neck! :-)
 *  Note:	    This structure has to be 16byte aligned!
 *  Note:	    Do not create a compact surface manually! Instead use one
 *		    of the various builder classes to create a compact surface.
 *  Important:	    Only use "ivp_free_aligned()" to free a compact surface!
 *******************************************************************************/


class IVP_Compact_Surface {
    IVP_Compact_Surface(){;};

public:
    IVP_U_Float_Point3	mass_center;
    IVP_U_Float_Point3	rotation_inertia;
    IVP_FLOAT		upper_limit_radius;
    unsigned int	max_factor_surface_deviation:8;
    int			byte_size:24;		// size of whole structure in bytes
    int			offset_ledgetree_root;	// offset to root node of internal ledgetree
    int			dummy[3];		// 16byte memory align
    /* Note: to get geom center use root node */

    int get_size() const { return byte_size; };
    /******************************************************************************
     *  Method:		get_compact_ledge_tree_root
     *  Description:    INTERNAL METHOD
     *****************************************************************************/
    const IVP_Compact_Ledgetree_Node *get_compact_ledge_tree_root() const {
	char *base = (char *)(((int)this) + this->offset_ledgetree_root);
	return((const IVP_Compact_Ledgetree_Node *)base);
    }

	// endian conversion support:
	void byte_swap_all(IVP_BOOL swap_points = IVP_TRUE, int point_estimate = 100); 
		// will recurse to all children / related data (once the offsets have been byte swapped of course!)
		// It will also swap all point data found if swap_points is true.

	void byte_swap(); // just do this data, do not recurse to nodes
};

#endif