Graphics

BiopLib - Graphics

HPGL

• blHPGLCBText() - Write centre-bottom justified text in HPGL
• blHPGLCTText() - Center Top justify text at x,y with y-offset in pts.
• blHPGLDraw() - Draw on HPGL plot
• blHPGLEnd() - Close the HPGL plot file
• blHPGLFont() - Set font for HPGL plot
• blHPGLInit() - Initialise an HPGL plot. The parameters specify the unprintable margins on the output device.
• blHPGLLCText() - Print left-centre justified text
• blHPGLLText() - Write left justified text on HPGL plot
• blHPGLMove() - Move on HPGL plot
• blHPGLPen() - Select a Pen
• blHPGLROffText() - Print right-justified text to HPGL
• blHPGLSetDash() - Set the line style (may be printer dependent):
• blHPGLShowText() - Displays the text, raising or lowering as appropriate and selecting alternate font where required. Used by the various ...Text() routines.
• blHPGLVText() - Write vertical text centred on x,y offset back along x by the size of label and by xoff in pts

Plotting

• blAMCBText() - Centre-bottom justify text
• blAMCTText() - Centre/top justify text at position in data coordinates.
• blAMDraw() - Draw to a position specified in data coordinates.
• blAMEndLine() - End a line; required by PostScript actually to draw on the paper.
• blAMEndPlot() - Close up a device after plotting.
• blAMInitPlot() - Initialise a device ready for plotting.
• blAMLCText() - Left/centre height justify text at position in data coordinates
• blAMMove() - Move to a position specified in data coordinates.
• blAMRText() - Right/centre justify text at position in data coordinates; offset is an x-offset specified in device coordinates (pt)
• blAMSetFont() - Sets the current font using PostScript font names. If producing HPGL output, a lookup table is used to translate this to an HPGL font number
• blAMSetLineStyle() - Set the line style
• blAMSetPen() - Change pen
• blAMText() - Left/bottom justify text at position in data coordinates
• blPS2HPGLFont() - Takes the PostScript font name and works out the best HPGL equivalent from a translation table. On the first call, the table is read from disk and space is allocated for it. If the routine is called with a NULL parameter, the space allocated for the table is freed. It is quite safe to call the routine again after this has occurred; the table will simply be re-read from disk.
• blSimplifyText() - Removes control codes from a string for screen display. Also used for calculating string length. The returned string is stored as static within the routine

Postscript

• blPSCBText() - Centers a piece of text with X,Y being the Coords of the BOTTOM centre point
• blPSCTText() - Centers a piece of text with X,Y being the Coords of the TOP centre point
• blPSClearDash() - Clear the dash pattern to a full line
• blPSCorrectCase() - Goes through a fontname and fixes case to match the required standard.
• blPSDraw() - Draw to X,Y
• blPSEnd() - End of page
• blPSFont() - Set the font and size
• blPSInit() - Initialises the file writing the Prologue. The filename and creator are written into the Prologue and EPSFxoff and EPSFyoff are used to calculate the bounding box size for EPSF plots.
• blPSLCText() - Left justify text, centred on Y
• blPSLText() - Left justify text
• blPSMove() - Move to X,Y
• blPSROffText() - Right justify text with offset in device coordinates (points).
• blPSSetDash() - Set a line dash pattern which must be supplied as a string
• blPSShowText() - Displays text, processing it first if any control codes are found. Used by the various text positioning routines.
• blPSStroke() - Actually draw what you've just done onto the paper
• blPSThick() - Set the line thickness
• blPSVText() - Write vertical text centred on x,y offset back along x by the size of label and by xoff in pts. Used, for example, to title the y-axis of a graph. The `label' specification is used to calculate an amount by which to move the text back. Typically this would be the longest data label on the graph's Y-axis.