ephysics: add some material constants
Pre-defined values of some properties, as density, friction and restitution. Ricardo researched these values on the following sources: http://www.matbase.com/ http://www.matweb.com/ http://physics.info/density/ http://www.bulletphysics.org/Bullet/phpBB3/viewtopic.php?f=9&t=616 http://www.woodweb.com/knowledge_base/Wood_Handbook.html http://www.engineershandbook.com/Tables/frictioncoefficients.htm http://www.engineeringtoolbox.com/friction-coefficients-d_778.html http://hypertextbook.com/facts/2006/restitution.shtml Since they diverge a lot, he calculated an average value. SVN revision: 77461
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Bruno Dilly
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@ -1297,6 +1297,135 @@ EAPI void ephysics_world_simulation_get(const EPhysics_World *world, double *fix
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*/
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#define EPHYSICS_BODY_MASS_STATIC (0.0)
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/**
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* @def EPHYSICS_BODY_DENSITY_WOOD
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* @brief Density of wood in kg / m ^ 3.
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*
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* It can be set to a body with @ref ephysics_body_density_set().
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*/
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#define EPHYSICS_BODY_DENSITY_WOOD (680.0)
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/**
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* @def EPHYSICS_BODY_DENSITY_IRON
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* @brief Density of iron in kg / m ^ 3.
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*
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* It can be set to a body with @ref ephysics_body_density_set().
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*/
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#define EPHYSICS_BODY_DENSITY_IRON (7400.0)
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/**
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* @def EPHYSICS_BODY_DENSITY_CONCRETE
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* @brief Density of concrete in kg / m ^ 3.
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*
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* It can be set to a body with @ref ephysics_body_density_set().
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*/
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#define EPHYSICS_BODY_DENSITY_CONCRETE (2300.0)
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/**
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* @def EPHYSICS_BODY_DENSITY_RUBBER
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* @brief Density of rubber in kg / m ^ 3.
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*
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* It can be set to a body with @ref ephysics_body_density_set().
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*/
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#define EPHYSICS_BODY_DENSITY_RUBBER (920.0)
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/**
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* @def EPHYSICS_BODY_DENSITY_POLYSTYRENE
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* @brief Density of polystyrene in kg / m ^ 3.
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*
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* It can be set to a body with @ref ephysics_body_density_set().
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*/
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#define EPHYSICS_BODY_DENSITY_POLYSTYRENE (80.0)
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/**
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* @def EPHYSICS_BODY_DENSITY_PLASTIC
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* @brief Density of plastic in kg / m ^ 3.
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*
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* It can be set to a body with @ref ephysics_body_density_set().
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*/
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#define EPHYSICS_BODY_DENSITY_PLASTIC (1300.0)
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/**
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* @def EPHYSICS_BODY_FRICTION_WOOD
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* @brief Friction coefficient of wood.
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*
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* It can be set to a body with @ref ephysics_body_friction_set().
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*/
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#define EPHYSICS_BODY_FRICTION_WOOD (0.4)
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/**
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* @def EPHYSICS_BODY_FRICTION_IRON
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* @brief Friction coefficient of iron.
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*
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* It can be set to a body with @ref ephysics_body_friction_set().
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*/
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#define EPHYSICS_BODY_FRICTION_IRON (0.8)
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/**
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* @def EPHYSICS_BODY_FRICTION_CONCRETE
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* @brief Friction coefficient of concrete.
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*
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* It can be set to a body with @ref ephysics_body_friction_set().
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*/
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#define EPHYSICS_BODY_FRICTION_CONCRETE (0.65)
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/**
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* @def EPHYSICS_BODY_FRICTION_RUBBER
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* @brief Friction coefficient of rubber.
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*
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* It can be set to a body with @ref ephysics_body_friction_set().
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*/
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#define EPHYSICS_BODY_FRICTION_RUBBER (0.75)
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/**
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* @def EPHYSICS_BODY_FRICTION_POLYSTYRENE
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* @brief Friction coefficient of polystyrene.
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*
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* It can be set to a body with @ref ephysics_body_friction_set().
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*/
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#define EPHYSICS_BODY_FRICTION_POLYSTYRENE (0.5)
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/**
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* @def EPHYSICS_BODY_FRICTION_PLASTIC
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* @brief Friction coefficient of plastic.
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*
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* It can be set to a body with @ref ephysics_body_friction_set().
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*/
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#define EPHYSICS_BODY_FRICTION_PLASTIC (0.35)
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/**
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* @def EPHYSICS_BODY_RESTITUTION_WOOD
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* @brief Restitution coefficient of wood.
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*
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* It can be set to a body with @ref ephysics_body_restitution_set().
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*/
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#define EPHYSICS_BODY_RESTITUTION_WOOD (0.7)
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/**
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* @def EPHYSICS_BODY_RESTITUTION_IRON
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* @brief Restitution coefficient of iron.
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*
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* It can be set to a body with @ref ephysics_body_restitution_set().
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*/
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#define EPHYSICS_BODY_RESTITUTION_IRON (0.85)
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/**
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* @def EPHYSICS_BODY_RESTITUTION_CONCRETE
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* @brief Restitution coefficient of concrete.
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*
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* It can be set to a body with @ref ephysics_body_restitution_set().
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*/
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#define EPHYSICS_BODY_RESTITUTION_CONCRETE (0.75)
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/**
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* @def EPHYSICS_BODY_RESTITUTION_RUBBER
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* @brief Restitution coefficient of rubber.
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*
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* It can be set to a body with @ref ephysics_body_restitution_set().
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*/
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#define EPHYSICS_BODY_RESTITUTION_RUBBER (0.3)
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/**
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* @def EPHYSICS_BODY_RESTITUTION_POLYSTYRENE
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* @brief Restitution coefficient of polystyrene.
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*
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* It can be set to a body with @ref ephysics_body_restitution_set().
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*/
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#define EPHYSICS_BODY_RESTITUTION_POLYSTYRENE (0.5)
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/**
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* @def EPHYSICS_BODY_RESTITUTION_PLASTIC
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* @brief Restitution coefficient of plastic.
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*
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* It can be set to a body with @ref ephysics_body_restitution_set().
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*/
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#define EPHYSICS_BODY_RESTITUTION_PLASTIC (0.6)
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/**
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* @typedef EPhysics_Body_Collision
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*
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@ -2244,6 +2373,14 @@ EAPI EPhysics_Body *ephysics_body_collision_contact_body_get(const EPhysics_Body
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*
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* By default restitution coefficient of each body is 0.
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*
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* EPhysics has some pre-defined restitution coefficients for materials:
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* @li @ref EPHYSICS_BODY_RESTITUTION_CONCRETE
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* @li @ref EPHYSICS_BODY_RESTITUTION_IRON
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* @li @ref EPHYSICS_BODY_RESTITUTION_PLASTIC
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* @li @ref EPHYSICS_BODY_RESTITUTION_POLYSTYRENE
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* @li @ref EPHYSICS_BODY_RESTITUTION_RUBBER
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* @li @ref EPHYSICS_BODY_RESTITUTION_WOOD
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*
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* @param body The body to has its restitution coefficient set.
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* @param restitution The new @p body's restitution coefficient.
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*
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@ -2279,6 +2416,14 @@ EAPI double ephysics_body_restitution_get(const EPhysics_Body *body);
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* By default friction value is 0.5 and simulation results will be better
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* when friction in non-zero.
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*
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* EPhysics has some pre-defined friction coefficients for materials:
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* @li @ref EPHYSICS_BODY_FRICTION_CONCRETE
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* @li @ref EPHYSICS_BODY_FRICTION_IRON
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* @li @ref EPHYSICS_BODY_FRICTION_PLASTIC
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* @li @ref EPHYSICS_BODY_FRICTION_POLYSTYRENE
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* @li @ref EPHYSICS_BODY_FRICTION_RUBBER
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* @li @ref EPHYSICS_BODY_FRICTION_WOOD
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*
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* @param body The body to has its friction set.
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* @param friction The new @p body's friction value.
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*
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@ -2714,6 +2859,14 @@ EAPI void ephysics_body_center_mass_get(const EPhysics_Body *body, double *x, do
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*
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* By default, no density is set.
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*
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* EPhysics has some pre-defined density values for materials:
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* @li @ref EPHYSICS_BODY_DENSITY_CONCRETE
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* @li @ref EPHYSICS_BODY_DENSITY_IRON
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* @li @ref EPHYSICS_BODY_DENSITY_PLASTIC
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* @li @ref EPHYSICS_BODY_DENSITY_POLYSTYRENE
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* @li @ref EPHYSICS_BODY_DENSITY_RUBBER
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* @li @ref EPHYSICS_BODY_DENSITY_WOOD
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*
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* @note The unit used for density is kilograms / meters ^ 3.
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*
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* @param body The body to has its material density set.
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