/usr/share/gnudatalanguage/coyote/cgdraw_roi.pro is in gdl-coyote 2016.11.13-2.
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;
; NAME:
; cgDraw_ROI
;
; PURPOSE:
; This procedure draws a region or group of regions, defined by the IDLanROI or
; IDLanROIGroup objects, on a direct graphics device. The type of ROI drawn is
; based on the TYPE property of a given IDLanROI object. These can be points,
; polylines, or filled polygons.
;
;******************************************************************************************;
; ;
; Copyright (c) 2012, by Fanning Software Consulting, Inc. All rights reserved. ;
; ;
; Redistribution and use in source and binary forms, with or without ;
; modification, are permitted provided that the following conditions are met: ;
; ;
; * Redistributions of source code must retain the above copyright ;
; notice, this list of conditions and the following disclaimer. ;
; * Redistributions in binary form must reproduce the above copyright ;
; notice, this list of conditions and the following disclaimer in the ;
; documentation and/or other materials provided with the distribution. ;
; * Neither the name of Fanning Software Consulting, Inc. nor the names of its ;
; contributors may be used to endorse or promote products derived from this ;
; software without specific prior written permission. ;
; ;
; THIS SOFTWARE IS PROVIDED BY FANNING SOFTWARE CONSULTING, INC. ''AS IS'' AND ANY ;
; EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES ;
; OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT ;
; SHALL FANNING SOFTWARE CONSULTING, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, ;
; INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED ;
; TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; ;
; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ;
; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ;
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS ;
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ;
;******************************************************************************************;
;
;+
; This procedure draws a region or group of regions, defined by the IDLanROI or
; IDLanROIGroup objects, on a direct graphics device. The type of ROI drawn is
; based on the TYPE property of a given IDLanROI object. These can be points,
; polylines, or filled polygons. This procedure is a Coyote Graphics wrapper for
; the built-in IDL procedure DRAW_ROI.
;
; :Categories:
; Graphics
;
; :Params:
; roi: in, required, type=object
; The input ROI object. Must be either an IDLanROI object or an IDLanROIGroup
; object (if you wish to draw multiple ROIs at the same time).
;
; :Keywords:
; addcmd: in, optional, type=boolean, default=0
; Set this keyword to add the command to an cgWindow. Setting this keyword
; automatically sets the WINDOW keyword, but the command does not erase the
; graphics window as it would normally.
; color: in, optional, type=string, default='opposite'
; The name of the polygon color. Color names are those used with cgColor.
; This value can also be a long integer or a byte or short integer index
; into the current color table.
; device: in, optional, type=boolean, default=0
; Set to indicate the polygon vertices are in device coordinates, rather than data coordinates.
; linestyle: in, optional, type=integer, default=0
; Set this keyword to the normal linestyle graphics keyword values. The default is a solid line.
; normal: in, optional, type=boolean, default=0
; Set to indicate the polygon vertices are in normalized coordinates, rather than data coordinates.
; outline: in, optional, type=boolean, default=0
; Set this keyword to draw the outline of the ROI, rather than the default filled ROI. In this
; case cgPlotS will be used to draw the ROI, rather than the built-in IDL procedure Draw_ROI.
; psym: in, optional, type=integer
; Any normal IDL PSYM values, plus any value supported by the Coyote Library
; routine cgSYMCAT. An integer between 0 and 46. May also be specified as a
; symbol names. See `cgSymCat` for details.
; symsize: in, optional, type=float/vector, default=1.0
; A scalar or vector of symbol sizes. Default is 1.0. May be a vector of the same
; length as X.
; t3d: in, optional, type=boolean, default=0
; Set this keyword to use the 3D coordinate system established by !P.T.
; thick: in, optional, type=float, default=1.0
; window: in, optional, type=boolean, default=0
; Set this keyword to add the command to the current cgWindow application.
; _ref_extra: in, optional
; Any `DRAW_ROI <http://www.exelisvis.com/docs/DRAW_ROI_Procedure.html>` keyword
; not defined here may be used
;
;
; :Examples:
; Download `cgDraw_ROI_Example <http://www.idlcoyote.com/tip_examples/cgdraw_roi_example.pro>'
; for an example program illustrating how cgDraw_ROI can be used.
;
; :Author:
; FANNING SOFTWARE CONSULTING::
; David W. Fanning
; 1645 Sheely Drive
; Fort Collins, CO 80526 USA
; Phone: 970-221-0438
; E-mail: david@idlcoyote.com
; Coyote's Guide to IDL Programming: http://www.idlcoyote.com
;
; :History:
; Change History::
; Written, 11 November 2012. David W. Fanning.
;
; :Copyright:
; Copyright (c) 2012, Fanning Software Consulting, Inc.
;-
PRO cgDraw_ROI, roi, $
ADDCMD=addcmd, $
COLOR=color, $
DEVICE=device, $
LINESTYLE=linestyle, $
NORMAL=normal, $
OUTLINE=outline, $
PSYM=psym, $
SYMSIZE=symsize, $
T3D=t3d, $
THICK=thick, $
WINDOW=window, $
_REF_EXTRA=extra
Compile_Opt idl2
Catch, theError
IF theError NE 0 THEN BEGIN
Catch, /CANCEL
void = cgErrorMsg()
IF N_Elements(currentState) NE 0 THEN cgSetColorState, currentState
RETURN
ENDIF
; Did user pass a parameter?
IF (N_Params() EQ 0) THEN BEGIN
Print, 'USE SYNTAX: cgDraw_ROI, thisROI
RETURN
ENDIF
; Do they want this plot in a resizeable graphics window?
IF Keyword_Set(addcmd) THEN window = 1
IF Keyword_Set(window) AND ((!D.Flags AND 256) NE 0) THEN BEGIN
currentWindow = cgQuery(/CURRENT, COUNT=wincnt)
IF wincnt EQ 0 THEN replaceCmd = 0 ELSE replaceCmd=1
; If adding a command, have to do this differently.
IF Keyword_Set(addcmd) THEN BEGIN
cgWindow, 'cgDraw_ROI', roi, $
COLOR=color, $
DEVICE=device, $
LINESTYLE=linestyle, $
NORMAL=normal, $
PSYM=psym, $
SYMSIZE=symsize, $
T3D=t3d, $
THICK=thick, $
ADDCMD=1, $
_EXTRA=extra
RETURN
ENDIF ELSE BEGIN
; Otherwise, we are just replacing the commands in a new or existing window.
cgWindow, 'cgDraw_ROI', roi, $
COLOR=color, $
DEVICE=device, $
LINESTYLE=linestyle, $
NORMAL=normal, $
PSYM=psym, $
SYMSIZE=symsize, $
T3D=t3d, $
THICK=thick, $
REPLACECMD=replaceCmd, $
_Extra=extra
RETURN
ENDELSE
ENDIF
; Set up PostScript device for working with colors.
IF !D.Name EQ 'PS' THEN Device, COLOR=1, BITS_PER_PIXEL=8
; Do this in decomposed color, if possible.
cgSetColorState, 1, CURRENTSTATE=currentState
; Need a color?
thisColor = cgDefaultColor(color, DEFAULT='opposite')
; Get the current color vectors.
TVLCT, rr, gg, bb, /Get
; Do you need a window?
IF ((!D.Flags AND 256) NE 0) && (!D.Window LT 0) THEN cgDisplay
; Is the color a string?
IF Size(thisColor, /TNAME) EQ 'STRING' THEN thisColor = cgColor(thisColor)
IF N_Elements(psym) EQ 0 THEN psym = 0
; Draw the ROI
IF Keyword_Set(outline) THEN BEGIN
IF Obj_Isa(roi, 'IDLanROI') THEN BEGIN
roi -> GetProperty, DATA=data
x = Reform(data[0,*])
y = Reform(data[1,*])
cgPlots, x, y, $
COLOR=thisColor, $
DEVICE=device, $
LINESTYLE=linestyle, $
NORMAL=normal, $
PSYM=cgSymCat(psym), $
SYMSIZE=symsize, $
T3D=t3d, $
THICK=thick
ENDIF ELSE BEGIN
objs = roi -> Get(/ALL, COUNT=count)
FOR j=0,count-1 DO BEGIN
thisROI = objs[j]
thisROI -> GetProperty, DATA=data
x = Reform(data[0,*])
y = Reform(data[1,*])
cgPlots, x, y, $
COLOR=thisColor, $
DEVICE=device, $
LINESTYLE=linestyle, $
NORMAL=normal, $
PSYM=cgSymCat(psym), $
SYMSIZE=symsize, $
T3D=t3d, $
THICK=thick
ENDFOR
ENDELSE
ENDIF ELSE BEGIN
Draw_ROI, roi, $
COLOR=thisColor, $
DEVICE=device, $
LINESTYLE=linestyle, $
NORMAL=normal, $
PSYM=cgSymCat(psym), $
SYMSIZE=symsize, $
T3D=t3d, $
THICK=thick, $
_Extra=extra
ENDELSE
; Clean up.
cgSetColorState, currentState
IF !D.Name NE 'Z' THEN TVLCT, rr, gg, bb
END
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