WHIP format

Draw Polymarker

Purpose

The Draw Polymarker function draws a marker or a series of marker glyphs.

Syntax

Opcode format	Opcode [ASCII] (Hex)	Operand Format	Comments
Single-byte, readable operand	[M] (4D)	[<ws>]<I_Count>[<ws><I_Xi>,<I_Yi>]⁺	Draws a series of markers, absolute coordinates.
Single-byte, binary operand	[m] (6D)	<B_Count>[<US_Ecount>][<L_Xi><L_Yi>]⁺	Polymarker, relative coordinates
	(8D)	<B_Count>[<US_Ecount>][<S_Xi><S_Yi>]⁺	Polymarker, relative coordinates

Count The number of points to mark. When using the binary operand form, a value of zero for count indicates that an extended count value will follow. In the ASCII operand case, count may be any value larger than zero.

Ecount When count is zero, a 2-byte extended count follows, allowing for polymarkers of length 256 through 65,791 vertices which are encoded as an integer (0 to 65,535).

Xi,Yi The i^th point (in logical coordinates) at which to place a marker glyph.

Details

The Draw Polymarker function allows you to mark a particular point, or series of points, with a marker glyph or a series of glyphs. The glyphs are rendered at the specified points based on the current settings of the Marker Glyph, Marker Size, Visibility and Color attributes.

Notes

If a Polymarker with more than 65,791 points is desired, it must be drawn by multiple Draw Polymarker opcodes, unless the readable ASCII form of the command is used.

Implementation in WHIP! Versions

Toolkit Function	TBD	Partial	Full	Revised in
Draw Polymarker	-	1.0	-	-