Name

PEXSetParaSurfCharacteristics - Set Parametric Surface Characteristics

Synopsis

void PEXSetParaSurfCharacteristics(Display ∗display, XID resource_id, PEXOCRequestType req_type, int psc_type, PEXPSCData ∗characteristics)

Arguments

displayA pointer to a display structure returned by a successful XOpenDisplay call. 

resource_idThe resource identifier of the renderer or structure. 

req_typeThe request type for the output command (PEXOCRender, PEXOCStore, PEXOCRenderSingle or PEXOCStoreSingle).

psc_typeThe parametric surface characteristic type (PEXPSCNone, PEXPSCImpDep, PEXPSCIsoCurves, PEXPSCMCLevelCurves, PEXPSCWCLevelCurves).

characteristics
A pointer to data defining the parametric surface characteristics.

Returns

None

Description

This function creates an output primitive attribute which sets the parametric surface characteristics.  If the specified parametric surface characteristics type is not supported, PEXPSCNone is used. Supported values for parameteric surface characteristic types are inquirable via PEXGetEnumTypeInfo.

Data Structures

typedef union {
    PEXPSCIsoparametricCurves iso_curves;
    PEXPSCLevelCurves       level_curves;
    PEXPSCImpDepData        imp_dep;
} PEXPSCData;
typedef struct {
    unsigned short      placement_type;
    unsigned short      reserved;
    unsigned short      u_count;
    unsigned short      v_count;
} PEXPSCIsoparametricCurves;
typedef struct {
    PEXCoord            origin;
    PEXVector           direction;
    unsigned short      count;
    unsigned short      reserved;
    float               ∗parameters;
} PEXPSCLevelCurves;
typedef struct {
    unsigned short      length;
    char                ∗data;
} PEXPSCImpDepData;
See also the PEXStructuresman page.

Errors

BadPEXOutputCommand
The output command contains an invalid value.

BadPEXRenderer
The specified renderer resource identifier is invalid.

BadPEXStructure
The specified structure resource identifier is invalid.

See Also