FreeBSD Manual Pages
al_draw_polyline(3) Library Functions Manual al_draw_polyline(3) NAME al_draw_polyline - Allegro 5 API SYNOPSIS #include <allegro5/allegro_primitives.h> void al_draw_polyline(const float* vertices, int vertex_stride, int vertex_count, int join_style, int cap_style, ALLEGRO_COLOR color, float thickness, float miter_limit) DESCRIPTION Draw a series of line segments. • vertices - Interleaved array of (x, y) vertex coordinates • vertex_stride - the number of bytes between pairs of vertices (the stride) • vertex_count - Number of vertices in the array • join_style - Member of ALLEGRO_LINE_JOIN(3) specifying how to render the joins between line segments • cap_style - Member of ALLEGRO_LINE_CAP(3) specifying how to render the end caps • color - Color of the line • thickness - Thickness of the line, pass <= 0 to draw hairline lines • miter_limit - Parameter for miter join style The stride is normally 2 * sizeof(float) but may be more if the vertex coordinates are in an array of some structure type, e.g. struct VertexInfo { float x; float y; int id; }; void my_draw(struct VertexInfo verts[], int vertex_count, ALLEGRO_COLOR c) { al_draw_polyline((float *)verts, sizeof(VertexInfo), vertex_count, ALLEGRO_LINE_JOIN_NONE, ALLEGRO_LINE_CAP_NONE, c, 1.0, 1.0); } The stride may also be negative if the vertices are stored in reverse order. SINCE 5.1.0 SEE ALSO al_draw_polygon(3), ALLEGRO_LINE_JOIN(3), ALLEGRO_LINE_CAP(3) Allegro reference manual al_draw_polyline(3)
NAME | SYNOPSIS | DESCRIPTION | SINCE | SEE ALSO
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=al_draw_polyline&sektion=3&manpath=FreeBSD+Ports+14.3.quarterly>