====== Function Calls ======


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There are few calls relating to cel projection, because most of the programming work is done by creating and manipulating CCBs. See [[:documentation:development:opera:pf25:ppgfldr:ggsfldr:gprfldr:01gpr#xref37440|Graphics Folio Calls]] for a description of the calls.

==== Cel Projection Calls ====

  * ''%%DrawCels() %%''Draws a list of cels (one or more) to the buffer of a bitmap.
  * ''%%DrawScreenCels() %%''Draws a list of cels (one or more) to the bitmaps of a screen.
  * ''%%SetReadAddress() %%''Sets a bitmap's read address.
  * ''%%ResetReadAddress() %%''Resets a bitmap's read address.

==== CCB and Cel Engine Control Word Manipulation Calls ====

  * ''%%MakeCCBRelative() %%''Creates a CCB relative address.
  * ''%%MapCel() %%''Maps this cel onto any four corners.
  * ''%%SetCEControl() %%''Sets the cel engine control word.