Wiki source for CatPgGfx2D


Show raw source

{{fbdoc item="title" value="2D Drawing Functions"}}----
Statements and procedures for working with 2D graphics.

{{fbdoc item="desc"}}
The statements and procedures listed here provide ways of drawing to the screen. Image buffers can be created and blitted to the screen using a variety of blending methods. Palette colors can be retrieved or set in graphics modes that support them.

**{{anchor name="COLOR|Working with Color"}}**
Procedures that control the color used by other drawing procedures.
**{{anchor name="DRAWING|Drawing to Image Buffers"}}**
Procedures that draw shapes and text onto image buffers or to the screen.
**{{anchor name="IMGBUF|Image Buffer Creation"}}**
Procedures that create, free and save image buffers.
**{{anchor name="BLITTING|Blitting Image Buffers"}}**
Procedures that draw image buffers onto other image buffers or to the screen.

<<{{anchor name="COLOR"}}{{fbdoc item="section" value="Working with Color"}}
=={{fbdoc item="keyword" value="KeyPgColor|COLOR"}}==
Sets the foreground and background color to use with the drawing procedures.
=={{fbdoc item="keyword" value="KeyPgPalette|PALETTE"}}==
Gets or sets color table information in paletted modes.
=={{fbdoc item="keyword" value="KeyPgRgb|RGB"}}==
Returns a color value for hi/truecolor modes.
=={{fbdoc item="keyword" value="KeyPgRgba|RGBA"}}==
Returns a color value including alpha (transparency) for hi/truecolor modes.
=={{fbdoc item="keyword" value="KeyPgPoint|POINT"}}==
Gets a pixel value from an image buffer or screen.

{{anchor name="DRAWING"}}{{fbdoc item="section" value="Drawing to Image Buffers"}}
=={{fbdoc item="keyword" value="KeyPgPset|PSET"}} and {{fbdoc item="keyword" value="KeyPgPreset|PRESET"}}==
Plots a single pixel on an image buffer or screen.
=={{fbdoc item="keyword" value="KeyPgLinegraphics|LINE (GRAPHICS)"}}==
Plots a line of pixels on an image buffer or screen.
=={{fbdoc item="keyword" value="KeyPgCircle|CIRCLE"}}==
Plots circles and ellipses on an image buffer or screen.
=={{fbdoc item="keyword" value="KeyPgDraw|DRAW"}}==
Draws in a sequence of commands on an image buffer or screen.
=={{fbdoc item="keyword" value="KeyPgDrawString|DRAW STRING"}}==
Writes text to an image buffer or screen.
=={{fbdoc item="keyword" value="KeyPgPaint|PAINT"}}==
Fills an area with color on an image buffer or screen.

{{anchor name="IMGBUF"}}{{fbdoc item="section" value="Image Buffer Creation"}}
=={{fbdoc item="keyword" value="KeyPgGetgraphics|GET (GRAPHICS)"}}==
Creates an image buffer from a portion of another image buffer or screen.
=={{fbdoc item="keyword" value="KeyPgImagecreate|IMAGECREATE"}}==
Creates an image buffer of a certain size and pixel depth.
=={{fbdoc item="keyword" value="KeyPgImageDestroy|IMAGEDESTROY"}}==
Frees an image buffer resource.
=={{fbdoc item="keyword" value="KeyPgImageConvertRow|IMAGECONVERTROW"}}==
Converts a row of pixels in an image buffer to a different color depth.
=={{fbdoc item="keyword" value="KeyPgImageInfo|IMAGEINFO"}}==
Retrieves useful information about an image buffer
=={{fbdoc item="keyword" value="KeyPgBload|BLOAD"}}==
Creates an image buffer from a file.
=={{fbdoc item="keyword" value="KeyPgBsave|BSAVE"}}==
Saves an image buffer to a file.
<<>>{{anchor name="BLITTING"}}{{fbdoc item="section" value="Blitting Image Buffers"}}
=={{fbdoc item="keyword" value="KeyPgPutgraphics|PUT (GRAPHICS)"}}==
Blits an image buffer to another image buffer or screen.

{{fbdoc item="subsect" value="Blending Methods"}}
=={{fbdoc item="keyword" value="KeyPgAddGfx|ADD"}}==
Saturated addition of the source and target components.
=={{fbdoc item="keyword" value="KeyPgAlphaGfx|ALPHA"}}==
Blend using a uniform transparency or the image buffer's alpha channel.
=={{fbdoc item="keyword" value="KeyPgAndGfx|AND"}}==
Combine the source and target components using a bitwise ##[[KeyPgOpAnd|And]]##
=={{fbdoc item="keyword" value="KeyPgOrGfx|OR"}}==
Combine the source and target components using a bitwise ##[[KeyPgOpOr|Or]]##
=={{fbdoc item="keyword" value="KeyPgPsetGfx|PSET"}}==
Directly copy pixel colors from the source to the destination.
=={{fbdoc item="keyword" value="KeyPgTransGfx|TRANS"}}==
Pixels matching the transparent mask color are not blitted.
=={{fbdoc item="keyword" value="KeyPgCustomgfx|CUSTOM"}}==
Allows a custom blending procedure to be used.
=={{fbdoc item="keyword" value="KeyPgXorGfx|XOR"}}==
Combine the source and target components using a bitwise ##[[KeyPgOpXor|Xor]]##
>>::c::

{{fbdoc item="back" value="DocToc|Table of Contents"}}
Valid XHTML :: Valid CSS: :: Powered by WikkaWiki



sf.net phatcode