debian man page for sdl::gfx::rotozoom

Query: sdl::gfx::rotozoom

OS: debian

Section: 3pm

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

pods::SDL::GFX::Rotozoom(3pm)				User Contributed Perl Documentation			     pods::SDL::GFX::Rotozoom(3pm)

NAME
SDL::GFX::Rotozoom - rotation and zooming functions for surfaces
CATEGORY
GFX
CONSTANTS
The constants are exported by default. You can avoid this by doing: use SDL::GFX::Rotozoom (); and access them directly: SDL::GFX::Rotozoom::SMOOTHING_OFF; or by choosing the export tags below: Export tag: ':smoothing' SMOOTHING_OFF SMOOTHING_ON
METHODS
surface my $new_surface = SDL::GFX::Rotozoom::surface( $surface, $angle, $zoom, $smooth ); With "SDL::GFX::Rotozoom::surface" you have the opportunity to rotate and zoom a given surface. The surface will be rotated counter clockwise (in degrees). Pass "SMOOTHING_ON" or "SMOOTHING_OFF" in order to turn it on or off. Note: The new surface (with $"zoom == 1") will usually be bigger than the source $surface. Note: Note: new surface should be less than 16384 in width and height. Example: use SDL; use SDL::Video; use SDL::Rect; use SDL::Surface; use SDL::GFX::Rotozoom; my $screen_width = 640; my $screen_height = 480; SDL::init(SDL_INIT_VIDEO); my $screen = SDL::Video::set_video_mode(800, 600, 32, SDL_SWSURFACE); my $picture = SDL::Video::load_BMP('test.bmp'); my $rotated = SDL::GFX::Rotozoom::surface( $picture, 45, 0.8, SMOOTHING_ON ); SDL::Video::blit_surface( $rotated, SDL::Rect->new(0, 0, $rotated->w, $rotated->h), $screen, SDL::Rect->new(0, 0, 0, 0) ); SDL::Video::update_rect( $screen, 0, 0, 0, 0 ); sleep(2); surface_xy my $new_surface = SDL::GFX::Rotozoom::surface_xy( $surface, $angle, $zoom_x, $zoom_y, $smooth ); Same as SDL::GFX::Rotozoom::surface but you can specify the zoomlevel for x and y separately. surface_size my ($new_width, $new_height) = @{ SDL::GFX::Rotozoom::surface_size( $width, $height, $angle, $zoom ) }; "surface_size" will give you the width and height of an rotating/zoom operation for the given $width and $height. Helpful for knowing the surface size before actually do the rotating/zoom operation. surface_size_xy my ($new_width, $new_height) = @{ SDL::GFX::Rotozoom::surface_size_xy( $width, $height, $angle, $zoom_x, $zoom_y ) }; Same as SDL::GFX::Rotozoom::surface_size but you can specify the zoomlevel for x and y separately. zoom_surface my $new_surface = SDL::GFX::Rotozoom::zoom_surface( $surface, $zoom_x, $zoom_y, $smooth ); Same as SDL::GFX::Rotozoom::surface_xy except you can zoom only. zoom_surface_size my ($new_width, $new_height) = SDL::GFX::Rotozoom::zoom_surface_size( $width, $height, $zoom_x, $zoom_y ); Same as SDL::GFX::Rotozoom::surface_size_xy except you can specify zoom only. shrink_surface my $new_surface = SDL::GFX::Rotozoom::shrink_surface( $surface, $factor_x, $factor_y ); Specialized function for shrinking a surface. rotate_surface_90_degrees my $new_surface = SDL::GFX::Rotozoom::rotate_surface_90_degrees( $surface, $num_clockwise_turns ); Rotating a surface $num_clockwise_turns-times.
AUTHORS
See "AUTHORS" in SDL. perl v5.14.2 2012-05-28 pods::SDL::GFX::Rotozoom(3pm)
Related Man Pages
sdl::video(3) - suse
sdl::gfx::primitives(3pm) - debian
sdl::pango(3pm) - debian
sdl::smpeg(3pm) - debian
sdlx::layer(3pm) - debian
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