vkvg_arc vkvg_arc_negative vkvg_clear vkvg_clip vkvg_clip_preserve vkvg_close_path vkvg_create vkvg_curve_to vkvg_destroy vkvg_ellipse vkvg_elliptic_arc_to vkvg_fill vkvg_fill_preserve vkvg_flush vkvg_font_extents vkvg_get_current_point vkvg_get_dash vkvg_get_fill_rule vkvg_get_line_cap vkvg_get_line_join vkvg_get_line_width vkvg_get_matrix vkvg_get_miter_limit vkvg_get_opacity vkvg_get_operator vkvg_get_reference_count vkvg_get_source vkvg_get_target vkvg_has_current_point vkvg_identity_matrix vkvg_line_to vkvg_load_font_from_memory vkvg_load_font_from_path vkvg_move_to vkvg_new_path vkvg_new_sub_path vkvg_paint vkvg_path_extents vkvg_quadratic_to vkvg_rectangle vkvg_reference vkvg_rel_curve_to vkvg_rel_elliptic_arc_to vkvg_rel_line_to vkvg_rel_move_to vkvg_rel_quadratic_to vkvg_reset_clip vkvg_restore vkvg_rotate vkvg_rounded_rectangle vkvg_rounded_rectangle2 vkvg_save vkvg_scale vkvg_select_font_face vkvg_set_dash vkvg_set_fill_rule vkvg_set_font_size vkvg_set_line_cap vkvg_set_line_join vkvg_set_line_width vkvg_set_matrix vkvg_set_miter_limit vkvg_set_opacity vkvg_set_operator vkvg_set_source vkvg_set_source_color vkvg_set_source_rgb vkvg_set_source_rgba vkvg_set_source_surface vkvg_show_text vkvg_show_text_run vkvg_status vkvg_status_to_string vkvg_stroke vkvg_stroke_preserve vkvg_text_extents vkvg_text_run_create vkvg_text_run_create_with_length vkvg_text_run_destroy vkvg_text_run_get_extents vkvg_text_run_get_glyph_count vkvg_text_run_get_glyph_position vkvg_transform vkvg_translate VkvgContext

vkvg_arc() void vkvg_arc ( VkvgContext  ctx, float  xc, float  yc, float  radius, float  a1, float  a2  ) Adds a circular arc in clockwise order of the given radius to the current path following angles of a trigonometric circle. After this call the current point will be the last computed point of the arc. The arc is centered at (xc , yc ), begins at angle a1 and proceeds in the direction of increasing angles to end at angle a2. If a2 is less than a1, it will be progressively increased by 2*PI until it is greater than a1. If there is a current point, an initial line segment will be added to the path to connect the current point to the beginning of the arc. If this initial line is undesired, it can be avoided by calling vkvg_new_sub_path() before calling vkvg_arc(). Angles are measured in radians. An angle of 0.0 is in the direction of the positive X axis. An angle of PI/2 radians (90 degrees) is in the direction of the positive Y axis. Angles increase in the direction from the positive X axis toward the positive Y axis. So with the default transformation matrix, angles increase in a clockwise direction. Remarks To convert from degrees to radians, use degrees * (PI/180). Parameters ctx The vkvg context pointer. xc center x coordinate xy center y coordinate radius The radius of the arc. a1 start angle in radians of the arc as if on a trigonometric circle. a2 end angle in radians of the arc to draw.