Optical Properties of Sub-Wavelength Dielectric Gratings and their Application for Surface Enhanced
HPL-2011-17 Optical Properties of Sub-Wavelength Dielectric Gratings and their Application for Surface Enhanced Raman Scattering - Hu, Min; Fattal, David; Li, Jingjing; Li, Xuema; Williams, Stanley R.; Li, Zhiyong Keyword(s): Sub-wavelength grating, surface enhanced Raman, dispersion relation Abstract: We fabricated and measured the far-field optical properties of a sub-wavelength Si3N4 (silicon nitride) two dimensional grating. Frequency-dependent transmission measurements from a white-light source revealed that both transverse magnetic (TM) and transverse electric (TE) modes were excited on the ... Full Report
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My P6 server is with dual vio servers. From the below output we could see that cd devices(cd0 and cd1) has been mapped to the vio client named prdsapfi1.
When we execute "lsdev -Cc cdrom" in prdsapfi1 there are 2 cd devices named cd0 and cd1 showing up in available state.
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someone gave me a set of electronic gadgets 'Brookstone' which has mini optical mouse. This mouse label doesn't have model or etc. Mouse does not work properly i.e. pointer is moving right but left/right buttons work opposite and not always could open or close controls.
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Trying to get my unix system to recognize an optical drive, it was delivered to us, so we assumed it worked, in the 2 years since no one ever has used it, we want to now. However, even running probe-scsi-all doesn't bring up that drive. It's a scsi address of 3, at the end of the chain, all... (1 Reply)
SDL::Surface(3) User Contributed Perl Documentation SDL::Surface(3)NAME
SDL::Surface - a SDL perl extension
SYNOPSIS
use SDL::Surface;
$image = new SDL::Surface(-name=>"yomama.jpg");
DESCRIPTION
The "SDL::Surface" module encapsulates the SDL_Surface* structure, and many of its ancillatory functions. Not only is it a workhorse of
the OO Layer, it is the base class for the "SDL::App" class.
EXPORTS
SDL_SWSURFACE SDL_HWSURFACE
SDL_ASYNCBLIT SDL_ANYFORMAT
SDL_HWPALETTE SDL_DOUBLEBUF
SDL_FULLSCREEN SDL_OPENGL
SDL_OPENGLBLIT SDL_RESIZEABLE
SDL_NOFRAME SDL_SRCCOLORKEY
SDL_RLEACCEL SDL_SRCALPHA
SDL_PREALLOC
METHODS
new (-name => 'foo.png')
The "SDL::Surface" class can be instantiated in a number of different ways. If support for the SDL_image library was included when
SDL_perl was compiled, the easiest way to create a new surface is to use the "SDL::Surface::new" method with the "-name" option. This will
load the image from the file and return an object encapsulating the SDL_Surface*.
new (-from => $buffer, ... )
If the contents of the new Surface is already in memory, "SDL::Surface::new" may be called with the "-from" option to create an image from
that section of memory. This method takes the following additional parameters:
o -width the width of the image in pixels
o -height the height of the image in pixels
o -depth the number of bits per pixel
o -pitch the number of bytes per line
o -Rmask an optional bitmask for red
o -Gmask an optional bitmask for green
o -Bmask an optional bitmask for green
o -Amask an optional bitmask for alpha
new ( -flags => SDL_SWSURFACE, ... )
Finally, "SDL::Suface::new" may be invoked with the "-flags" option, in a similar fashion to the "-from" directive. This invocation takes
the same additional options as "-from" with the exception of "-pitch" which is ignored. This method returns a new, blank, SDL::Surface
option with any of the following flags turned on:
o SWSURFACE() a non-accelerated surface
o HWSURFACE() a hardware accelerated surface
o SRCCOLORKEY() a surface with a transperant color
o SRCALPHA() an alpha blended, translucent surface
flags ()
"SDL::Surface::flags" returns the flags with which the surface was initialized.
palette ()
"SDL::Surface::palette" currently returns a SDL_Palette*, this may change in future revisions.
bpp ()
"SDL::Surface::bpp" returns the bits per pixel of the surface
bytes_per_pixel ()
"SDL::Surface::bytes_per_pixel" returns the bytes per pixel of the surface
Rshift ()
"SDL::Surface::Rshift" returns the bit index of the red field for the surface's pixel format
Gshift ()
"SDL::Surface::Gshift" returns the bit index of the green field for the surface's pixel format
Bshift ()
"SDL::Surface::Bshift" returns the bit index of the blue field for the surface's pixel format
Ashift ()
"SDL::Surface::Ashift" returns the bit index of the alpha field for the surface's pixel format
Rmask ()
"SDL::Surface::Rmask" returns the bit mask for the red field for teh surface's pixel format
Gmask ()
"SDL::Surface::Gmask" returns the bit mask for the green field for teh surface's pixel format
Bmask ()
"SDL::Surface::Bmask" returns the bit mask for the blue field for teh surface's pixel format
Amask ()
"SDL::Surface::Amask" returns the bit mask for the alpha field for teh surface's pixel format
color_key ()
"SDL::Surface::color_key" returns the current color key for the image, which can be set with the "SDL::Surface::set_color_key" method.
Before calling "SDL::Surface::color_key" on a image, you should fist call "SDL::Surface::display_format" to convert it to the same format
as the display. Failure to do so will result in failure to apply the correct color_key.
alpha ()
"SDL::Surface::alpha" returns the current alpha value for the image, which can be set with the "SDL::Surface::set_alpha" method.
width ()
"SDL::Surface::width" returns the width in pixels of the surface
height ()
"SDL::Surface::height" returns the height in pixels of the surface
pitch ()
"SDL::Surface::pitch" returns the width of a surface's scanline in bytes
pixels ()
"SDL::Surface::pixels" returns a Uint8* to the image's pixel data. This is not inherently useful within perl, though may be used to pass
image data to user provided C functions.
pixel (x,y,[color])
"SDL::Surface::pixel" will set the color value of the pixel at (x,y) to the given color if provided. "SDL::Surface::pixel" returns a
SDL::Color object for the color value of the pixel at (x,y) after any possible modifications.
fill (rect,color)
"SDL::Surface::fill" will fill the given SDL::Rect rectangle with the specified SDL::Color This function optionally takes a SDL_Rect* and a
SDL_Color*
lockp ()
"SDL::Surface::lockp" returns true if the surface must be locked
lock ()
"SDL::Surface::lock" places a hardware lock if necessary, preventing access to the surface's memory
unlock ()
"SDL::Surface::unlock" removes any hardware locks, enabling blits
update ( rects...)
"SDL::Surface::update" takes one or more SDL::Rect's which determine which sections of the image are to be updated. This option is only
useful on the appliaction surface.
flip ()
"SDL::Surface::flip" updates the full surface, using a double buffer if available
blit (srect,dest,drect)
"SDL::Surface::blit" blits the current surface onto the destination surface, according to the provided rectangles. If a rectangle is 0,
then the full surface is used.
set_colors (start,colors...)
"SDL::Surface::set_colors" updates the palette starting at index "start" with the supplied colors. The colors may either be SDL::Color
objects or SDL_Color* from the low level C-style API.
set_color_key (flag,pixel) or (flag,x,y)
"SDL::Surface::set_color_key" sets the blit flag, usually SDL_SRCCOLORKEY, to the specified SDL::Color object. Optional a SDL_Color* may
be passed.
set_alpha (flag,alpha)
"SDL::Surface::set_alpha" sets the opacity of the image for alpha blits. "alpha" takes a value from 0x00 to 0xff.
display_format ()
"SDL::Surface::display_format" converts the surface to the same format as the current screen.
rgb () "SDL::Surface::rgb" converts the surface to a 24 bit rgb format regardless of the initial format.
rgba () "SDL::Surface::rgba" converts the surface to a 32 bit rgba format regarless of the initial format.
print (x,y,text...)
"SDL::Surface::print" renders the text using the current font onto the image. This option is only supported for with SDL_image and SFont.
save_bmp (filename)
"SDL::Surface::save_bmp" saves the surface to filename in Windows BMP format.
video_info ()
"SDL::Surface::video_info" returns a hash describing the current state of the video hardware.
AUTHOR
David J. Goehrig
SEE ALSO
perl SDL::App SDL::Color SDL::Palette SDL::Rect
perl v5.12.1 2010-07-05 SDL::Surface(3)
