Allegro 4.3.1 Description:

Allegro is a game programming library for C/C developers distributed freely, supporting the following platforms: Windows, DOS, Unix (Linux, FreeBSD, Solaris, Irix, Darwin), QNX, BeOS and MacOS X.

Allegro provides many functions for graphics, sounds, player input (keyboard, mouse and joystick) and timers. It also provides fixed and floating point mathematical functions, 3d functions, file management functions, compressed datafile and a GUI.

Allegro is a portable library mainly aimed at video game and multimedia programming, originally started by Shawn Hargreaves for the DJGPP compiler in a mixture of C and assembler.

According to the Oxford Companion to Music, Allegro is the Italian for "quick, lively, bright". Allegro is also a recursive acronym which stands for "Allegro Low LEvel Game ROutines".

Cross-platform support:
· Unix (Linux, FreeBSD, Irix, Solaris, Darwin)
· Windows (MSVC, MinGW, Cygwin, Borland)
· BeOS
· QNX
· MacOS X
· Dos (DJGPP, Watcom)

Graphic functions:
· pixels, lines, rectangles, circles, ellipses, arcs, Bezier splines
· shape fill, with or without pattern
· polygons: flat, Gouraud, textured (3D) and translucent
· masked, compressed and compiled sprites
· blitting, rotation, stretching, reduction, alpha blending, Gouraud shading
· native support for BMP, LBM, PCX and TGA files (others supported with library extensions)
· color palette manipulation (reading, writing, conversion)
· conversion of color formats RGB HSV
· support for different encodings and conversion, default is UTF-8
· bitmap fonts (masking, colouring, alignment)
· draw directly on the screen or on any-size memory bitmaps
· hardware scrolling and triple buffering (where available), mode-X split screen
animation functions for FLI/FLC format

Sound functions:
· native MIDI music format support (with 64 simultaneous effects)
· dynamic control/response to music note on, note off, main volume, pan, pitch bend, and program change
· uses General MIDI patches
· you can read in wavetable patches for MIDI files (SF2 and GUS patches)
· native support of WAV and VOC file formats (playing looped forward, backwards or bidirectional)
· streaming audio
· modify volume, pan, pitch, etc during play

Math functions:
· fixed point arithmetic and trigonometric routines
· precalculated trigonometric tables
· vector/matrix/quaternions 3d manipulation (translation, rotation, scaling, projection)

Misc:
· mouse, keyboard and joystick management
· high resolution interrupt timers (resolution of 10, 5 or less ms depending on platform)
· vertical retrace simulation
· manipulate configuration files
· manipulate compressed files in LZSS format
· manipulate multi-object resource-like compressed datafiles
· tool for creating datafiles (grabber)
· simple GUI for dialogs and file selector

Related searches:

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Allegro security information

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