Provided by: libsdl-perl_2.548-1build1_amd64 bug

NAME

       SDL::GFX::Primitives - basic drawing functions

CATEGORY

       GFX

DESCRIPTION

       All functions take an SDL::Surface object as first parameter. This can be a new surface
       that will be blitted afterwards, can be an surface obtained by SDL::Video::set_video_mode
       or can be an SDLx::App.

       The "color" values for the "_color" functions are "0xRRGGBBAA" (32bit), even if the
       surface uses e. g. 8bit colors.

METHODS

   pixel
        int SDL::GFX::Primitives::pixel_color( $surface, $x, $y, $color );
        int SDL::GFX::Primitives::pixel_RGBA(  $surface, $x, $y, $r, $g, $b, $a );

       Draws a pixel at point "x"/$y. You can pass the color by "0xRRGGBBAA" or by passing 4
       values. One for red, green, blue and alpha.

        use SDL;
        use SDL::Video;
        use SDL::Surface;
        use SDL::GFX::Primitives;

        my $surface = SDL::Video::set_video_mode(640, 480, 32, SDL_SWSURFACE);

        SDL::GFX::Primitives::pixel_color($surface, 2, 2, 0xFF0000FF);             # red pixel
        SDL::GFX::Primitives::pixel_RGBA( $surface, 4, 4, 0x00, 0xFF, 0x00, 0xFF); # green pixel

   hline
        int SDL::GFX::Primitives::hline_color( $surface, $x1, $x2, $y, $color );
        int SDL::GFX::Primitives::hline_RGBA(  $surface, $x1, $x2, $y, $r, $g, $b, $a );

       Draws a line horizontally from $x1/$y to $x2/$y.

   vline
        int SDL::GFX::Primitives::vline_color( $surface, $x, $y1, $y2, $color );
        int SDL::GFX::Primitives::vline_RGBA(  $surface, $x, $y1, $y2, $r, $g, $b, $a );

       Draws a line vertically from $x/$y1 to $x/$y2.

   rectangle
        int SDL::GFX::Primitives::rectangle_color( $surface, $x1, $y1, $x2, $y2, $color );
        int SDL::GFX::Primitives::rectangle_RGBA(  $surface, $x1, $y1, $x2, $y2, $r, $g, $b, $a );

       Draws a rectangle. Upper left edge will be at $x1/$y1 and lower right at $x2/$y. The
       colored border has a width of 1 pixel.

   box
        int SDL::GFX::Primitives::box_color( $surface, $x1, $y1, $x2, $y2, $color );
        int SDL::GFX::Primitives::box_RGBA(  $surface, $x1, $y1, $x2, $y2, $r, $g, $b, $a );

       Draws a filled rectangle.

   line
        int SDL::GFX::Primitives::line_color( $surface, $x1, $y1, $x2, $y2, $color );
        int SDL::GFX::Primitives::line_RGBA(  $surface, $x1, $y1, $x2, $y2, $r, $g, $b, $a );

       Draws a free line from $x1/$y1 to $x2/$y.

   aaline
        int SDL::GFX::Primitives::aaline_color( $surface, $x1, $y1, $x2, $y2, $color );
        int SDL::GFX::Primitives::aaline_RGBA(  $surface, $x1, $y1, $x2, $y2, $r, $g, $b, $a );

       Draws a free line from $x1/$y1 to $x2/$y. This line is anti aliased.

   circle
        int SDL::GFX::Primitives::circle_color( $surface, $x, $y, $r, $color );
        int SDL::GFX::Primitives::circle_RGBA(  $surface, $x, $y, $rad, $r, $g, $b, $a );

   arc
        int SDL::GFX::Primitives::arc_color( $surface, $x, $y, $r, $start, $end, $color );
        int SDL::GFX::Primitives::arc_RGBA(  $surface, $x, $y, $rad, $start, $end, $r, $g, $b, $a );

       Note: You need lib SDL_gfx 2.0.17 or greater for this function.

   aacircle
        int SDL::GFX::Primitives::aacircle_color( $surface, $x, $y, $r, $color );
        int SDL::GFX::Primitives::aacircle_RGBA(  $surface, $x, $y, $rad, $r, $g, $b, $a );

       Note: You need lib SDL_gfx 2.0.17 or greater for this function.

   filled_circle
        int SDL::GFX::Primitives::filled_circle_color( $surface, $x, $y, $r, $color );
        int SDL::GFX::Primitives::filled_circle_RGBA(  $surface, $x, $y, $rad, $r, $g, $b, $a );

   ellipse
        int SDL::GFX::Primitives::ellipse_color( $surface, $x, $y, $rx, $ry, $color );
        int SDL::GFX::Primitives::ellipse_RGBA(  $surface, $x, $y, $rx, $ry, $r, $g, $b, $a );

   aaellipse
        int SDL::GFX::Primitives::aaellipse_color( $surface, $xc, $yc, $rx, $ry, $color );
        int SDL::GFX::Primitives::aaellipse_RGBA(  $surface, $x, $y, $rx, $ry, $r, $g, $b, $a );

   filled_ellipse
        int SDL::GFX::Primitives::filled_ellipse_color( $surface, $x, $y, $rx, $ry, $color );
        int SDL::GFX::Primitives::filled_ellipse_RGBA(  $surface, $x, $y, $rx, $ry, $r, $g, $b, $a );

   pie
        int SDL::GFX::Primitives::pie_color( $surface, $x, $y, $rad, $start, $end, $color );
        int SDL::GFX::Primitives::pie_RGBA(  $surface, $x, $y, $rad, $start, $end, $r, $g, $b, $a );

       This draws an opened pie. $start and $end are degree values. 0 is at right, 90 at bottom,
       180 at left and 270 degrees at top.

   filled_pie
        int SDL::GFX::Primitives::filled_pie_color( $surface, $x, $y, $rad, $start, $end, $color );
        int SDL::GFX::Primitives::filled_pie_RGBA(  $surface, $x, $y, $rad, $start, $end, $r, $g, $b, $a );

   trigon
        int SDL::GFX::Primitives::trigon_color( $surface, $x1, $y1, $x2, $y2, $x3, $y3, $color );
        int SDL::GFX::Primitives::trigon_RGBA(  $surface, $x1, $y1, $x2, $y2, $x3, $y3, $r, $g, $b, $a );

   aatrigon
        int SDL::GFX::Primitives::aatrigon_color( $surface, $x1, $y1, $x2, $y2, $x3, $y3, $color );
        int SDL::GFX::Primitives::aatrigon_RGBA(  $surface, $x1, $y1, $x2, $y2, $x3, $y3, $r, $g, $b, $a );

   filled_trigon
        int SDL::GFX::Primitives::filled_trigon_color( $surface, $x1, $y1, $x2, $y2, $x3, $y3, $color );
        int SDL::GFX::Primitives::filled_trigon_RGBA(  $surface, $x1, $y1, $x2, $y2, $x3, $y3, $r, $g, $b, $a );

   polygon
        int SDL::GFX::Primitives::polygon_color( $surface, $vx, $vy, $n, $color );
        int SDL::GFX::Primitives::polygon_RGBA(  $surface, $vx, $vy, $n, $r, $g, $b, $a );

       Example:

        SDL::GFX::Primitives::polygon_color($display, [262, 266, 264, 266, 262], [243, 243, 245, 247, 247], 5, 0xFF0000FF);

   aapolygon
        int SDL::GFX::Primitives::aapolygon_color( $surface, $vx, $vy, $n, $color );
        int SDL::GFX::Primitives::aapolygon_RGBA(  $surface, $vx, $vy, $n, $r, $g, $b, $a );

   filled_polygon
        int SDL::GFX::Primitives::filled_polygon_color( $surface, $vx, $vy, $n, $color );
        int SDL::GFX::Primitives::filled_polygon_RGBA(  $surface, $vx, $vy, $n, $r, $g, $b, $a );

   textured_polygon
        int SDL::GFX::Primitives::textured_polygon( $surface, $vx, $vy, $n, $texture, $texture_dx, $texture_dy );

   filled_polygon_MT
        int SDL::GFX::Primitives::filled_polygon_color_MT( $surface, $vx, $vy, $n, $color, $polyInts, $polyAllocated );
        int SDL::GFX::Primitives::filled_polygon_RGBA_MT(  $surface, $vx, $vy, $n, $r, $g, $b, $a, $polyInts, $polyAllocated );

       Note: You need lib SDL_gfx 2.0.17 or greater for this function.

   textured_polygon_MT
        int SDL::GFX::Primitives::textured_polygon_MT( $surface, $vx, $vy, $n, $texture, $texture_dx, $texture_dy, $polyInts, $polyAllocated );

       Note: You need lib SDL_gfx 2.0.17 or greater for this function.

   bezier
        int SDL::GFX::Primitives::bezier_color( $surface, $vx, $vy, $n, $s, $color );
        int SDL::GFX::Primitives::bezier_RGBA(  $surface, $vx, $vy, $n, $s, $r, $g, $b, $a );

       $n is the number of elements in $vx and $vy, and $s is the number of steps. So the bigger
       $s is, the smother it becomes.

       Example:

        SDL::GFX::Primitives::bezier_color($display, [390, 392, 394, 396], [243, 255, 235, 247], 4, 20, 0xFF00FFFF);

   character
        int SDL::GFX::Primitives::character_color( $surface, $x, $y, $c, $color );
        int SDL::GFX::Primitives::character_RGBA(  $surface, $x, $y, $c, $r, $g, $b, $a );

       $c is the character that will be drawn at $x,$y.

   string
        int SDL::GFX::Primitives::string_color( $surface, $x, $y, $c, $color );
        int SDL::GFX::Primitives::string_RGBA(  $surface, $x, $y, $c, $r, $g, $b, $a );

   set_font
        void SDL::GFX::Primitives::set_font(fontdata, $cw, $ch );

       The fontsets are included in the SDL_gfx distribution. Check
       <http://www.ferzkopp.net/joomla/content/view/19/14/> for more.

       Example:

        my $font = '';
        open(FH, '<', 'data/5x7.fnt');
        binmode(FH);
        read(FH, $font, 4096);
        close(FH);

        SDL::GFX::Primitives::set_font($font, 5, 7);

AUTHORS

       See "AUTHORS" in SDL.