SDL::GFX::Primitives(3pm)

1SDL::GFX::Primitives(3)User Contributed Perl DocumentatioSnDL::GFX::Primitives(3)
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NAME

6       SDL::GFX::Primitives - basic drawing functions
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DESCRIPTION

12       All functions take an SDL::Surface object as first parameter. This can
13       be a new surface that will be blitted afterwards, can be an surface
14       obtained by SDL::Video::set_video_mode or can be an SDLx::App.
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16       The "color" values for the "_color" functions are "0xRRGGBBAA" (32bit),
17       even if the surface uses e. g. 8bit colors.
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METHODS

20   pixel
21        int SDL::GFX::Primitives::pixel_color( $surface, $x, $y, $color );
22        int SDL::GFX::Primitives::pixel_RGBA(  $surface, $x, $y, $r, $g, $b, $a );
23
24       Draws a pixel at point "x"/$y. You can pass the color by "0xRRGGBBAA"
25       or by passing 4 values. One for red, green, blue and alpha.
26
27        use SDL;
28        use SDL::Video;
29        use SDL::Surface;
30        use SDL::GFX::Primitives;
31
32        my $surface = SDL::Video::set_video_mode(640, 480, 32, SDL_SWSURFACE);
33
34        SDL::GFX::Primitives::pixel_color($surface, 2, 2, 0xFF0000FF);             # red pixel
35        SDL::GFX::Primitives::pixel_RGBA( $surface, 4, 4, 0x00, 0xFF, 0x00, 0xFF); # green pixel
36
37   hline
38        int SDL::GFX::Primitives::hline_color( $surface, $x1, $x2, $y, $color );
39        int SDL::GFX::Primitives::hline_RGBA(  $surface, $x1, $x2, $y, $r, $g, $b, $a );
40
41       Draws a line horizontally from $x1/$y to $x2/$y.
42
43   vline
44        int SDL::GFX::Primitives::vline_color( $surface, $x, $y1, $y2, $color );
45        int SDL::GFX::Primitives::vline_RGBA(  $surface, $x, $y1, $y2, $r, $g, $b, $a );
46
47       Draws a line vertically from $x/$y1 to $x/$y2.
48
49   rectangle
50        int SDL::GFX::Primitives::rectangle_color( $surface, $x1, $y1, $x2, $y2, $color );
51        int SDL::GFX::Primitives::rectangle_RGBA(  $surface, $x1, $y1, $x2, $y2, $r, $g, $b, $a );
52
53       Draws a rectangle. Upper left edge will be at $x1/$y1 and lower right
54       at $x2/$y. The colored border has a width of 1 pixel.
55
56   box
57        int SDL::GFX::Primitives::box_color( $surface, $x1, $y1, $x2, $y2, $color );
58        int SDL::GFX::Primitives::box_RGBA(  $surface, $x1, $y1, $x2, $y2, $r, $g, $b, $a );
59
60       Draws a filled rectangle.
61
62   line
63        int SDL::GFX::Primitives::line_color( $surface, $x1, $y1, $x2, $y2, $color );
64        int SDL::GFX::Primitives::line_RGBA(  $surface, $x1, $y1, $x2, $y2, $r, $g, $b, $a );
65
66       Draws a free line from $x1/$y1 to $x2/$y.
67
68   aaline
69        int SDL::GFX::Primitives::aaline_color( $surface, $x1, $y1, $x2, $y2, $color );
70        int SDL::GFX::Primitives::aaline_RGBA(  $surface, $x1, $y1, $x2, $y2, $r, $g, $b, $a );
71
72       Draws a free line from $x1/$y1 to $x2/$y. This line is anti aliased.
73
74   circle
75        int SDL::GFX::Primitives::circle_color( $surface, $x, $y, $r, $color );
76        int SDL::GFX::Primitives::circle_RGBA(  $surface, $x, $y, $rad, $r, $g, $b, $a );
77
78   arc
79        int SDL::GFX::Primitives::arc_color( $surface, $x, $y, $r, $start, $end, $color );
80        int SDL::GFX::Primitives::arc_RGBA(  $surface, $x, $y, $rad, $start, $end, $r, $g, $b, $a );
81
82       Note: You need lib SDL_gfx 2.0.17 or greater for this function.
83
84   aacircle
85        int SDL::GFX::Primitives::aacircle_color( $surface, $x, $y, $r, $color );
86        int SDL::GFX::Primitives::aacircle_RGBA(  $surface, $x, $y, $rad, $r, $g, $b, $a );
87
88       Note: You need lib SDL_gfx 2.0.17 or greater for this function.
89
90   filled_circle
91        int SDL::GFX::Primitives::filled_circle_color( $surface, $x, $y, $r, $color );
92        int SDL::GFX::Primitives::filled_circle_RGBA(  $surface, $x, $y, $rad, $r, $g, $b, $a );
93
94   ellipse
95        int SDL::GFX::Primitives::ellipse_color( $surface, $x, $y, $rx, $ry, $color );
96        int SDL::GFX::Primitives::ellipse_RGBA(  $surface, $x, $y, $rx, $ry, $r, $g, $b, $a );
97
98   aaellipse
99        int SDL::GFX::Primitives::aaellipse_color( $surface, $xc, $yc, $rx, $ry, $color );
100        int SDL::GFX::Primitives::aaellipse_RGBA(  $surface, $x, $y, $rx, $ry, $r, $g, $b, $a );
101
102   filled_ellipse
103        int SDL::GFX::Primitives::filled_ellipse_color( $surface, $x, $y, $rx, $ry, $color );
104        int SDL::GFX::Primitives::filled_ellipse_RGBA(  $surface, $x, $y, $rx, $ry, $r, $g, $b, $a );
105
106   pie
107        int SDL::GFX::Primitives::pie_color( $surface, $x, $y, $rad, $start, $end, $color );
108        int SDL::GFX::Primitives::pie_RGBA(  $surface, $x, $y, $rad, $start, $end, $r, $g, $b, $a );
109
110       This draws an opened pie. $start and $end are degree values. 0 is at
111       right, 90 at bottom, 180 at left and 270 degrees at top.
112
113   filled_pie
114        int SDL::GFX::Primitives::filled_pie_color( $surface, $x, $y, $rad, $start, $end, $color );
115        int SDL::GFX::Primitives::filled_pie_RGBA(  $surface, $x, $y, $rad, $start, $end, $r, $g, $b, $a );
116
117   trigon
118        int SDL::GFX::Primitives::trigon_color( $surface, $x1, $y1, $x2, $y2, $x3, $y3, $color );
119        int SDL::GFX::Primitives::trigon_RGBA(  $surface, $x1, $y1, $x2, $y2, $x3, $y3, $r, $g, $b, $a );
120
121   aatrigon
122        int SDL::GFX::Primitives::aatrigon_color( $surface, $x1, $y1, $x2, $y2, $x3, $y3, $color );
123        int SDL::GFX::Primitives::aatrigon_RGBA(  $surface, $x1, $y1, $x2, $y2, $x3, $y3, $r, $g, $b, $a );
124
125   filled_trigon
126        int SDL::GFX::Primitives::filled_trigon_color( $surface, $x1, $y1, $x2, $y2, $x3, $y3, $color );
127        int SDL::GFX::Primitives::filled_trigon_RGBA(  $surface, $x1, $y1, $x2, $y2, $x3, $y3, $r, $g, $b, $a );
128
129   polygon
130        int SDL::GFX::Primitives::polygon_color( $surface, $vx, $vy, $n, $color );
131        int SDL::GFX::Primitives::polygon_RGBA(  $surface, $vx, $vy, $n, $r, $g, $b, $a );
132
133       Example:
134
135        SDL::GFX::Primitives::polygon_color($display, [262, 266, 264, 266, 262], [243, 243, 245, 247, 247], 5, 0xFF0000FF);
136
137   aapolygon
138        int SDL::GFX::Primitives::aapolygon_color( $surface, $vx, $vy, $n, $color );
139        int SDL::GFX::Primitives::aapolygon_RGBA(  $surface, $vx, $vy, $n, $r, $g, $b, $a );
140
141   filled_polygon
142        int SDL::GFX::Primitives::filled_polygon_color( $surface, $vx, $vy, $n, $color );
143        int SDL::GFX::Primitives::filled_polygon_RGBA(  $surface, $vx, $vy, $n, $r, $g, $b, $a );
144
145   textured_polygon
146        int SDL::GFX::Primitives::textured_polygon( $surface, $vx, $vy, $n, $texture, $texture_dx, $texture_dy );
147
148   filled_polygon_MT
149        int SDL::GFX::Primitives::filled_polygon_color_MT( $surface, $vx, $vy, $n, $color, $polyInts, $polyAllocated );
150        int SDL::GFX::Primitives::filled_polygon_RGBA_MT(  $surface, $vx, $vy, $n, $r, $g, $b, $a, $polyInts, $polyAllocated );
151
152       Note: You need lib SDL_gfx 2.0.17 or greater for this function.
153
154   textured_polygon_MT
155        int SDL::GFX::Primitives::textured_polygon_MT( $surface, $vx, $vy, $n, $texture, $texture_dx, $texture_dy, $polyInts, $polyAllocated );
156
157       Note: You need lib SDL_gfx 2.0.17 or greater for this function.
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159   bezier
160        int SDL::GFX::Primitives::bezier_color( $surface, $vx, $vy, $n, $s, $color );
161        int SDL::GFX::Primitives::bezier_RGBA(  $surface, $vx, $vy, $n, $s, $r, $g, $b, $a );
162
163       $n is the number of elements in $vx and $vy, and $s is the number of
164       steps. So the bigger $s is, the smother it becomes.
165
166       Example:
167
168        SDL::GFX::Primitives::bezier_color($display, [390, 392, 394, 396], [243, 255, 235, 247], 4, 20, 0xFF00FFFF);
169
170   character
171        int SDL::GFX::Primitives::character_color( $surface, $x, $y, $c, $color );
172        int SDL::GFX::Primitives::character_RGBA(  $surface, $x, $y, $c, $r, $g, $b, $a );
173
174       $c is the character that will be drawn at $x,$y.
175
176   string
177        int SDL::GFX::Primitives::string_color( $surface, $x, $y, $c, $color );
178        int SDL::GFX::Primitives::string_RGBA(  $surface, $x, $y, $c, $r, $g, $b, $a );
179
180   set_font
181        void SDL::GFX::Primitives::set_font(fontdata, $cw, $ch );
182
183       The fontsets are included in the SDL_gfx distribution. Check
184       <http://www.ferzkopp.net/joomla/content/view/19/14/> for more.
185
186       Example:
187
188        my $font = '';
189        open(FH, '<', 'data/5x7.fnt');
190        binmode(FH);
191        read(FH, $font, 4096);
192        close(FH);
193
194        SDL::GFX::Primitives::set_font($font, 5, 7);
195

AUTHORS

197       See "AUTHORS" in SDL.
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201perl v5.28.0                      2018-07-15           SDL::GFX::Primitives(3)

NAME

CATEGORY

DESCRIPTION

METHODS

AUTHORS