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;; visualization.lisp
;;
;; Copyright (c) 2011-2014, Jaime E. Villate <villate@fe.up.pt>
;;
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program; if not, write to the Free Software
;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
;; MA 02110-1301, USA.
;;
(in-package :maxima)
;; translates Maxima scene object's option values into Xmaxima input syntax
(defun tcl-vtk-option-value (name values)
(when ($listp (car values)) (setq values (cdar values)))
(with-output-to-string (st)
(format st "{~a" name)
(dolist (num values)
(cond
((plotcolorp num)
(format st "~{ ~d~}" (hexrgb-to-decimal (rgb-color num))))
((integerp num) (format st " ~d" num))
((floatp num) (format st " ~f" num))
(($numberp num) (format st " ~f " (coerce-float num)))
((and ($constantp num) ($freeof '$%i num) (not (member num '(t nil)))
(not ($listp num)))
(format st " ~f " (coerce-float num)))
(($listp num) (format st "~a" (tcl-output-number-list num)))
(t
(merror
(intl:gettext "scene: Wrong value for option ~M~%Expecting a number; found: ~M")
name num))))
(format st "} ")))
;; converts a Maxima list into a floating-point Tcl list string
(defun tcl-output-number-list (maxlist)
(with-output-to-string (st)
(format st "{ ")
(dolist (num (rest maxlist))
(cond
((floatp num) (format st "~f " num))
(($numberp num) (format st "~f " (coerce-float num)))
((and ($constantp num) ($freeof '$%i num) (not (member num '(t nil)))
(not ($listp num)))
(format st "~f " (coerce-float num)))
(($listp num) (format st "~a" (tcl-output-number-list num)))
(t
(merror
(intl:gettext "scene: Wrong value in animation list: ~M")
num))))
(format st "} ")))
;; converts a hexadecimal rgb color string into list of numbers from 0 to 1
(defun hexrgb-to-decimal (color)
(list (/ (parse-integer (subseq color 1 3) :radix 16) 255.0)
(/ (parse-integer (subseq color 3 5) :radix 16) 255.0)
(/ (parse-integer (subseq color 5) :radix 16) 255.0)))
;; parses a scene option into a command-line option passed to Xmaxima
(defun scene-option-to-tcl (option)
(let (v vv (name (car option)))
(case name
($azimuth (if (cadr option)
(setf (cadr option) (parse-azimuth (cadr option))))
(setq v (check-option option #'realp "a real number" 1)))
($elevation (if (cadr option)
(setf (cadr option) (parse-elevation (cadr option))))
(setq v (check-option option #'realp "a real number" 1)))
($tstep
(setq v (check-option option #'realp "a real number" 1))
(setq option (list name v)))
(($width $height)
(setq v (check-option option #'naturalp "a natural number" 1))
(setq option (list name v)))
($restart
(setq v (check-option-boole option))
(setq option (list name (if v 1 0))))
($background
(setq v (check-option option #'plotcolorp "a color"))
(setq option (cons name (hexrgb-to-decimal (rgb-color v)))))
(($windowtitle $windowname)
(setq v (check-option option #'string "a string" 1))
(setq option (list name v)))
(t (merror (intl:gettext "scene: Unknown option ~M") name)))
(setq vv (mapcar #'(lambda (a) (if (symbolp a) (ensure-string a) a)) option))
(with-output-to-string (st)
(format st "-~(~a~) " (first vv))
(format st "{~{~a~^ ~}}" (rest vv)))))
(defun $scene (&rest arguments)
(let (objects options file (objs "") (opts " ") vtkname
(lf (format NIL "~%"))
(classes '(($cube . "Cube") ($sphere . "Sphere")
($cylinder . "Cylinder") ($cone . "Cone")))
;; VTK methods for the objects in classes
(cmethods '(($center . "Center") ($radius . "Radius")
($height . "Height") ($resolution . "Resolution")
($latlongtessellation . "LatLongTessellation")
($thetaresolution . "ThetaResolution")
($phiresolution . "PhiResolution")
($starttheta . "StartTheta") ($endtheta . "EndTheta")
($startphi . "StartTheta") ($endphi . "EndTheta")
($capping . "Capping") ($direction . "Direction")
($xlength . "XLength") ($ylength . "YLength")
($zlength . "ZLength") ($bounds . "Bounds")
($angle . "Angle")))
;; VTK methods for properties
(pmethods '(($color . "Color") ($opacity . "Opacity")
($ambient . "Ambient") ($ambientcolor . "AmbientColor")
($specular . "Specular") ($specularcolor . "SpecularColor")
($diffuse . "Diffuse") ($diffusecolor . "DiffuseColor")
($edgevisibility . "EdgeVisibility")
($edgecolor . "EdgeColor") ($linewidth . "LineWidth")
($pointsize . "PointSize") ($lightning . "Lightning")
($shading . "Shading") ($texture . "Texture")
($representation . "Representation")
($points . "RepresentationToPoints")
($wireframe . "RepresentationToWireframe")
($surface . "RepresentationToSurface")
($interpolation . "Interpolation")
($flat . "InterpolationToFlat")
($gourand . "InterpolationToGourand")
($phong . "InterpolationToPhong")
($stipplepattern . "LineStipplePattern")
($stipplerepeat . "LineStippleRepeatFactor")
($frontculling . "FrontFaceCulling")
($backculling . "BackFaceCulling")))
;; VTK methods for actors
(amethods '(($origin . "Origin") ($scale . "Scale")
($position . "Position") ($orientation . "Orientation")
($usertransform . "UserTransform"))))
;; separates arguments between objects and options
(dolist (v arguments)
(if (listp v) (setq v (cdr v)) (setq v (list v)))
(if (assoc (car v) classes)
(setq objects (append objects (list v)))
(setq options (append options (list v)))))
;; sets up output file name to pass to Xmaxima
(setq file (plot-temp-file (format nil "maxout~d.xmaxima" (getpid))))
;; parses objects
(dolist (v objects)
(let ((copts "") (popts "") (aopts "") animate prop)
(setq vtkname (cdr (assoc (car v) classes)))
;; parses object properties
(dolist (w (cdr v))
(unless ($listp w)
(merror
(intl:gettext "scene: Wrong option; expecting a list; found: ~M")
w))
(cond
((setq prop (cdr (assoc (second w) cmethods)))
(setq copts
(concatenate 'string copts
(tcl-vtk-option-value prop (cddr w)))))
((setq prop (cdr (assoc (second w) pmethods)))
(setq popts
(concatenate 'string popts
(tcl-vtk-option-value prop (cddr w)))))
((setq prop (cdr (assoc (second w) amethods)))
(setq aopts
(concatenate 'string aopts
(tcl-vtk-option-value prop (cddr w)))))
((eql (second w) '$animate)
(unless (setq prop (cdr (assoc (third w) amethods)))
(merror (intl:gettext "scene: ~M cannot be animated.")
(third w)))
(setq animate
(concatenate 'string "{" prop " 0 "
(tcl-output-number-list (fourth w)) "}")))
((eql (second w) '$track)
(setq animate
(concatenate 'string "{Position 1 "
(tcl-output-number-list (third w)) "}")))
(t (mtell (intl:gettext "scene: Ignored option: ~M")
(second w)))))
;; save object name and properties in string objs
(setq objs
(concatenate 'string objs "{" vtkname lf "{" copts "}" lf
"{" popts "}" lf "{" aopts "}" lf animate "}" lf))))
;; parse scene options and copy them to string opts
(cond (options
(dolist (v options)
(setq opts (concatenate 'string opts " "
(scene-option-to-tcl v))))))
(show-open-plot
(with-output-to-string (st)
(cond ($show_openplot
(format st "scene ~a -objects {~a}~%" opts objs))
(t (format st "{scene ~a -objects {~a}}" opts objs))))
file)))
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