pinq_pred_param_surf_rep(3g) — Subroutines
Name
pinq_pred_param_surf_rep − Returns the parametric surface type and surface data for an index.
Operating States: PHOP, ∗, ∗, ∗
PHIGS PLUS function
Syntax
void pinq_pred_param_surf_rep (
Pint wstype, /∗ (I) Workstation type. ∗/
Pint index, /∗ (I) Predefined parametric surface
index. ∗/
Pstore store, /∗ (I) Handle to store the object.
store manages the memory
referenced by ∗rep. ∗/
Pint ∗error_ind, /∗ (O) Error indicator ∗/
Pparam_surf_rep ∗∗rep /∗ (O) Predefined parametric surface
representation ∗/
)
Data Structures
typedef void ∗Pstore;
typedef struct {
Psurf_approx_crit approx_crit; /∗ surface approximation
criteria ∗/
Pparam_surf_chars chars_data; /∗ parametric surface
characteristics data ∗/
} Pparam_surf_rep;
typedef struct {
Pint type; /∗ surface approximation criteria type∗/
union Psurf_approx_crit_data {
struct Psurf_approx_const_param_subd {
Pint u_count; /∗ u count ∗/
Pint v_count; /∗ v count ∗/
} const_param_subd;
struct Psurf_approx_chordal_size_wc {
Pfloat u_approx; /∗ u approximation value
Pfloat v_approx; /∗ v approximation value ∗/
} chordal_size_wc;
struct Psurf_approx_chordal_size_npc {
Pfloat u_approx; /∗ u approximation value ∗/
Pfloat v_approx; /∗ v approximation value ∗/
} chordal_size_npc;
struct Psurf_approx_chordal_size_dc {
Pfloat u_approx; /∗ u approximation value ∗/
Pfloat v_approx; /∗ v approximation value ∗/
} chordal_size_dc;
struct Psurf_approx_planar_dev_wc {
Pfloat approx; /∗ approximation value ∗/
} planar_dev_wc;
struct Psurf_approx_planar_dev_npc {
Pfloat approx; /∗ approximation value ∗/
} planar_dev_npc;
struct Psurf_approx_planar_dev_dc {
Pfloat approx; /∗ approximation value ∗/
} planar_dev_dc;
struct Psurf_approx_rel_wc {
Pfloat approx; /∗ approximation value ∗/
} rel_wc;
struct Psurf_approx_rel_npc {
Pfloat approx; /∗ approximation value ∗/
} rel_npc;
struct Psurf_approx_rel_dc {
Pfloat approx; /∗ approximation value ∗/
} rel_dc;
Pdata unsupp; /∗ unsupported surface approximation
criteria data ∗/
} data;
} Psurf_approx_crit;
typedef struct {
Pint type; /∗ parametric surface characteristics type ∗/
union Pparam_surf_chars_data {
struct Pparam_surf_isoparam {
Pplacement placement; /∗ curve placement ∗/
Pint num_u_curves; /∗ curve count in u
direction ∗/
Pint num_v_curves; /∗ curve count in v
direction ∗/
} isoparam;
struct Pparam_surf_level_mc {
Ppoint3 origin; /∗ origin point ∗/
Pvec3 dir; /∗ direction vector ∗/
Pfloat_list params; /∗ parameter list ∗/
} level_mc;
struct Pparam_surf_level_wc {
Ppoint3 origin; /∗ origin point ∗/
Pvec3 dir; /∗ direction vector ∗/
Pfloat_list params; /∗ parameter list ∗/
} level_wc;
Pdata unsupp; /∗ unsupported parametric surface
characteristics data ∗/
} data;
} Pparam_surf_chars;
typedef enum {
PPLACE_UNIFORM_OVER_SURF, /∗ uniform placement over
surface ∗/
PPLACE_UNIFORM_BETWEEN_KNOTS /∗ uniform placement between
knots ∗/
} Pplacement;
typedef struct {
Pfloat x; /∗ x coordinate ∗/
Pfloat y; /∗ y coordinate ∗/
Pfloat z; /∗ z coordinate ∗/
} Ppoint3;
typedef struct {
Pfloat delta_x; /∗ delta x value ∗/
Pfloat delta_y; /∗ delta y value ∗/
Pfloat delta_z; /∗ delta z value ∗/
} Pvec3;
typedef struct {
Pint num_floats; /∗ number of floats in the list ∗/
Pfloat ∗floats; /∗ list of floats ∗/
} Pfloat_list;
Constants
Data Structure Constants Constant Description
---------------------------------------------------------------------------
Approximation types PSURF_APPROX_WS_DEP Workstation-
dependent method
PSURF_APPROX_CONST_PARAM_ Constant parametric
SUBD subdivision between
knots
PSURF_APPROX_CHORDAL_ Chordal size, in
SIZE_WC world coordinate
units
PSURF_APPROX_CHORDAL_ Chordal size, in
SIZE_NPC normalized
projection units
PSURF_APPROX_CHORDAL_ Chordal size, in
SIZE_DC device coordinate
units
PSURF_APPROX_PLANAR_ Planar deviation, in
DEV_WC world coordinates
PSURF_APPROX_PLANAR_ Planar deviation, in
DEV_NPC normalized projec-
tion coordinates
PSURF_APPROX_PLANAR_ Planar deviation, in
DEV_DC device coordinates
PSURF_APPROX_REL_WC Relative, in world
coordinate units
PSURF_APPROX_REL_NPC Relative, in
normalized projec-
tion coordinates
PSURF_APPROX_REL_DC Relative, in device
coordinate units
Parametric surface PPARAM_SURF_CHARS_NONE None
characteristic types
PPARAM_SURF_CHARS_WS_DEP Workstation-
dependent
PPARAM_SURF_CHARS_ISOPARAM Isoparametric curves
PPARAM_SURF_CHARS_LEVEL_MC Level curves, in
modeling coordinates
PPARAM_SURF_CHARS_LEVEL_WC Level curves, in
world coordinates
---------------------------------------------------------------------------
Description
pinq_pred_param_surf_rep queries the workstation description table and returns the parametric surface type and surface data for the specified index.
Digital PHIGS Version 4.1 does not support this function.
See Also
pcreate_store
pdel_store
pinq_list_param_surf_inds
pinq_param_surf_rep
pset_param_surf_rep