VECTORARC

typedef struct tagVECTORARC 
{ 
   VECTOROBJECT Object; 
   VECTORPOINT Point; 
   VECTORPEN Pen; 
   L_DOUBLE Radius; 
   L_DOUBLE StartAngle; 
   L_DOUBLE SweepAngle; 
} VECTORARC, * pVECTORARC; 

The VECTORARC structure holds information about a vector arc object.

Members

VECTOROBJECT Object

Abstract object.

VECTORPOINT Point

A VECTORPOINT structure that contains the vertex of a vector arc object, about which the arc sweeps.

VECTORPEN Pen

VECTORPEN structure that contains information about the pen to use when drawing the vector arc object.

L_DOUBLE Radius

Length of the radius of the vector arc object. This value is in logical units.

L_DOUBLE StartAngle

The angle at which to begin the vector arc. Values should be between 0 and 360 degrees. Values less than 0 and greater than 360 will be modified internally.

L_DOUBLE SweepAngle

The angle through which to sweep the vector arc. Values should be between 360 and +360 degrees. Positive angles will be drawn in a counter-clockwise direction from StartAngle. Negative angles will be drawn in a clockwise direction.

Comments

nSize of the Object member must be the sizeof this structure.

nType of the Object member must be VECTOR_ARC.

pVECTORARC is a pointer to a VECTORARC structure.

The diagram below gives a graphical representation of the Point, Radius, StartAngle and SweepAngle parameters.

image\Pie.gif
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