assimp/code/HMPFileData.h

/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------

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  following disclaimer.

* Redistributions in binary form must reproduce the above
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* Neither the name of the assimp team, nor the names of its
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
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*/
//!
//! @file Data structures for the 3D Game Studio Heightmap format (HMP)
//!

namespace Assimp	{
namespace HMP	{

#include "./../include/assimp/Compiler/pushpack1.h"
#include <stdint.h>

// to make it easier for us, we test the magic word against both "endianesses"
#define AI_HMP_MAGIC_NUMBER_BE_4	AI_MAKE_MAGIC("HMP4")
#define AI_HMP_MAGIC_NUMBER_LE_4	AI_MAKE_MAGIC("4PMH")

#define AI_HMP_MAGIC_NUMBER_BE_5	AI_MAKE_MAGIC("HMP5")
#define AI_HMP_MAGIC_NUMBER_LE_5	AI_MAKE_MAGIC("5PMH")

#define AI_HMP_MAGIC_NUMBER_BE_7	AI_MAKE_MAGIC("HMP7")
#define AI_HMP_MAGIC_NUMBER_LE_7	AI_MAKE_MAGIC("7PMH")

// ---------------------------------------------------------------------------
/** Data structure for the header of a HMP5 file.
 *  This is also used by HMP4 and HMP7, but with modifications
*/
struct Header_HMP5
{
	int8_t	ident[4]; // "HMP5"
	int32_t		version;
	
	// ignored
	float	scale[3];
	float	scale_origin[3];
	float	boundingradius;
	
	//! Size of one triangle in x direction
	float	ftrisize_x;		
	//! Size of one triangle in y direction
	float	ftrisize_y;		
	//! Number of vertices in x direction
	float	fnumverts_x;	
							
	//! Number of skins in the file
	int32_t		numskins;

	// can ignore this?
	int32_t		skinwidth;
	int32_t		skinheight;

	//!Number of vertices in the file
	int32_t		numverts;

	// ignored and zero
	int32_t		numtris;

	//! only one supported ...
	int32_t		numframes;		

	//! Always 0 ...
	int32_t		num_stverts;	
	int32_t		flags;
	float	size;
} PACK_STRUCT;

// ---------------------------------------------------------------------------
/** Data structure for a terrain vertex in a HMP4 file 
*/
struct Vertex_HMP4
{
	uint16_t p_pos[3];		
	uint8_t normals162index;	
	uint8_t pad;				
} PACK_STRUCT;

// ---------------------------------------------------------------------------
/** Data structure for a terrain vertex in a HMP5 file 
*/
struct Vertex_HMP5
{
	uint16_t z;	
	uint8_t normals162index;	
	uint8_t pad;				
} PACK_STRUCT;

// ---------------------------------------------------------------------------
/** Data structure for a terrain vertex in a HMP7 file 
*/
struct Vertex_HMP7
{
	uint16_t	 z;				
	int8_t normal_x,normal_y;
} PACK_STRUCT;

#include "./../include/assimp/Compiler/poppack1.h"

} //! namespace HMP
} //! namespace Assimp