SET EDGE COLOUR(3P+) — MISC. REFERENCE MANUAL PAGES

NAME

SET EDGE COLOUR − create structure element to set the current edge direct colour attribute

SYNOPSIS

C Syntax

void
psetedgecolour ( colour )
Pgcolr∗colour;edge colour

FORTRAN Syntax

SUBROUTINE pseco ( COLMOD, ICOLR, COLR )
INTEGERCOLMODcolour model
INTEGERICOLRcolour table index
REALCOLR(3)colour triple

Required PHIGS Operating States

(PHOP, ∗, STOP, ∗)

DESCRIPTION

Purpose

SET EDGE COLOUR creates a structure element to set the current edge direct colour attribute.

When the current edge colour Aspect Source Flag (ASF) is set to INDIVIDUAL, the current value of this attribute applies to the following output primitives:

• FILL AREA SET

• FILL AREA SET 3

• FILL AREA SET 3 WITH DATA

• NON-UNIFORM B-SPLINE SURFACE

• POLYHEDRON 3 WITH DATA

• QUADRILATERAL MESH 3 WITH DATA

• TRIANGLE STRIP 3 WITH DATA

This is a SunPHIGS Extension function based on PHIGS+ and is not part of the PHIGS standard.

C Input Parameters

All of the following data types are predefined in phigs.h.

colourEdge colour. Pgcolr is defined as:

typedef struct {
Pint type;/∗ indirect, RGB, CIE, HSV, HLS ∗/
union {
   Pintindex;/∗ colour table index ∗/
   struct {
Pfloatx;/∗ red, hue, etc. ∗/
Pfloaty;/∗ green, saturation, lightness, etc. ∗/
Pfloatz;/∗ blue, value, saturation, etc. ∗/
   } general;
} val;
} Pgcolr;

FORTRAN Input Parameters

All of the following data types are predefined in phigs77.h.

COLMOD
The colour model. The predefined values are:

0PINDIRColour Index Specified
1PRGBRed, Green, and Blue
2PCIECIE Colour Model
3PHSVHue, Saturation, and Value
4PHLSHue, Lightness, and Saturation

ICOLR
An integer index into the workstation colour table for determining the edge colour. This value is only used if COLMOD is equal to PINDIR.

COLR(3)
An array of reals containing the edge colour. This array is unused if COLMOD is equal to PINDIR.

COLR(1) = Red, Hue, etc.
COLR(2) = Green, Saturation, Lightness, etc.
COLR(3) = Blue, Value, Saturation, etc.

Execution

Depending on the edit mode, a SET EDGE COLOUR element with the value edge colour in the specified colour model is inserted into the open structure after the element pointer or replaces the element pointed at by the element pointer. The element pointer is then updated to point to this SET EDGE COLOUR element.

When the current edge colour ASF is set to INDIVIDUAL, filled area output primitives which follow in the structure network are drawn using the current edge colour.

When the current edge colour ASF is set to BUNDLED, the edge colour is taken from the workstation extended representation indicated by the current edge index. In this case, the edge colour set with SET EDGE COLOUR has no effect.

The standard PHIGS function SET EDGE COLOUR INDEX is equivalent to calling to SET EDGE COLOUR with type INDIRECT.

ERRORS

005Ignoring function, function requires state (PHOP, ∗, STOP, ∗)

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