Line Drawing - Solid Line

AGG does not really have a line drawing routine in the traditional 2D graphics API sense. Instead, it generates polygons from the line paths and strokes. Then fill the polygons.

The following codes generate a solid line of width 1.0 for the path provided. Its properties are very similar to that of SVG's polyline.

agg::conv_stroke<SimplePath> strokePath (path);

double strokeWidth = 1.0;
strokePath.width(strokeWidth);
strokePath.line_cap(agg::square_cap);
strokePath.line_join(agg::miter_join);
strokePath.miter_limit(strokeWidth);

It should be noted that this path will treat any agg::path_cmd_curve3, agg::path_cmd_curve4 etc as simply agg::path_cmd_line_to. We will deal with those in the next section.

Example

tutorial_linedrawing_1.cpp generates an image containing a green border and star.

An equivalent SVG is