/*	Public domain	*/

typedef struct sg_material {
	struct ag_object _inherit;
	int n;				/* Material index */
	char name[64];			/* Name */
	Uint flags;
	M_Real e[SG_NELEMENTS];		/* Elemental composition (%) */

	M_Real density;			/* Density (g/cm^-3) */
	M_Real r;			/* Electrical resistivity (ohms/m) */
	M_Real k;			/* Thermal conductivity (W/m.K) */
	M_Real Texp;			/* Thermal expansion (um/m.K) */
	M_Real c;			/* Speed of sound (m/s) */

	M_Real mp;			/* Melting point (degC) */
	M_Real bp;			/* Boiling point (degC) */
	M_Real dHfus;			/* Heat of fusion (kJ/mol) */
	M_Real dHvap;			/* Heat of vaporization (kJ/mol) */
	M_Real C;			/* Heat capacity (J/mol.k) */

	M_Real TS;			/* Tensile strength */
	M_Real BHN;			/* Brinell hardness */
	M_Real HV;			/* Vickers hardness */
	M_Real HM;			/* Mohs hardness */
	M_Real Em;			/* Young's modulus (Pa) */
	M_Real Sm;			/* Shear modulus (Pa) */
	M_Real Km;			/* Bulk modulus (Pa) */
	M_Real vr;			/* Poisson's ratio */

	AG_Surface **textures;		/* Rendering textures */
	int         nTextures;
} SG_Material;

#define SG_MATERIAL_MAX			10000
#define SG_MATERIAL_MAX_TEXTURES	16

enum sg_material_texture_types {
	SG_MATERIAL_TEXTURE_RAW = 1
};

__BEGIN_DECLS
extern AG_ObjectClass sgMaterialClass;
extern SG_Material   **sgMaterials;
extern Uint            sgMaterialCount;

void SG_InitMaterials(void);
void SG_DestroyMaterials(void);
int  SG_LoadMaterials(const char *);
__END_DECLS