XFillPolygon

Syntax

XFillPolygon(display, d, gc, points, npoints, shape, mode)
      Display *display;
      Drawable d;
      GC gc;
      XPoint *points;
      int npoints;
      int shape; 
      int mode;

Arguments

display	Specifies the connection to the X server.
d	Specifies the drawable.
gc	Specifies the GC.
points	Specifies an array of points.
npoints	Specifies the number of points in the array.
shape	Specifies a shape that helps the server to improve performance. You can pass Complex, Convex, or Nonconvex.
mode	Specifies the coordinate mode. You can pass CoordModeOrigin or CoordModePrevious.

Description

XFillPolygon() fills the region closed by the specified path. The path is closed automatically if the last point in the list does not coincide with the first point. XFillPolygon() does not draw a pixel of the region more than once. CoordModeOrigin treats all coordinates as relative to the origin, and CoordModePrevious treats all coordinates after the first as relative to the previous point.

Depending on the specified shape, the following occurs:

If shape is .PN Complex , the path may self-intersect. Note that contiguous coincident points in the path are not treated as self-intersection.
If shape is Convex , for every pair of points inside the polygon, the line segment connecting them does not intersect the path. If known by the client, specifying Convex can improve performance. If you specify Convex for a path that is not convex, the graphics results are undefined.
If shape is Nonconvex , the path does not self-intersect, but the shape is not wholly convex. If known by the client, specifying Nonconvex instead of Complex may improve performance. If you specify Nonconvex for a self-intersecting path, the graphics results are undefined.

The fill-rule of the GC controls the filling behavior of self-intersecting polygons.

This function uses these GC components: function, plane-mask, fill-style, fill-rule, subwindow-mode, clip-x-origin, clip-y-origin, and clip-mask. It also uses these GC mode-dependent components: foreground, background, tile, stipple, tile-stipple-x-origin, and tile-stipple-y-origin.

XFillPolygon() can generate BadDrawable, BadGC, BadMatch, and BadValue errors.

Diagnostics

BadDrawable	A value for a Drawable argument does not name a defined Window or Pixmap.
BadGC	A value for a GContext argument does not name a defined GContext.
BadMatch	An InputOnly window is used as a Drawable.
BadMatch	Some argument or pair of arguments has the correct type and range but fails to match in some other way required by the request.
BadValue	Some numeric value falls outside the range of values accepted by the request. Unless a specific range is specified for an argument, the full range defined by the argument's type is accepted. Any argument defined as a set of alternatives can generate this error.

XFillPolygon

Syntax

Arguments

Description

Diagnostics

See also