--- /dev/null
+# Created by Octave 3.6.2, Tue Jun 19 09:54:03 2012 UTC <root@brouzouf>
+# name: cache
+# type: cell
+# rows: 3
+# columns: 44
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 8
+best_dir
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 1793
+ [d,w,rx,cv,wx] = best_dir( x, [a , sx ] )
+
+ Some points x, are observed and one assumes that they belong to
+ parallel planes. There is an unknown direction d s.t. for each
+ point x(i,:), one has :
+
+ x(i,:)*d == w(j(i)) + noise
+
+ where j is known(given by the matrix a ), but w is unknown.
+
+ Under the assumption that the error on x are i.i.d. gaussian,
+ best_dir() returns the maximum likelihood estimate of d and w.
+
+ This function is slower when cv is returned.
+
+ INPUT :
+ -------
+ x : D x P P points. Each one is the sum of a point that belongs
+ to a plane and a noise term.
+
+ a : P x W 0-1 matrix describing association of points (rows of
+ x) to planes :
+
+ a(p,i) == 1 iff point x(p,:) belongs to the i'th plane.
+
+ Default is ones(P,1)
+
+ sx : P x 1 Covariance of x(i,:) is sx(i)*eye(D).
+ Default is ones(P,1)
+ OUTPUT :
+ --------
+ d : D x 1 All the planes have the same normal, d. d has unit
+ norm.
+
+ w : W x 1 The i'th plane is { y | y*d = w(i) }.
+
+ rx : P x 1 Residuals of projection of points to corresponding plane.
+
+
+ Assuming that the covariance of x (i.e. sx) was known
+ only up to a scale factor, an estimate of the
+ covariance of x and [w;d] are
+
+ sx * mean(rx.^2)/mean(sx) and
+ cv * mean(rx.^2)/mean(sx), respectively.
+
+ cv : (D+W)x(D+W)
+ Covariance of the estimator at [d,w] ( assuming that
+ diag(covariance(vec(x))) == sx ).
+
+ wx : (D+W)x(D*P)
+ Derivatives of [w;d] wrt to x.
+
+ Author : Etienne Grossmann <etienne@egdn.net>
+ Created : March 2000
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 49
+ [d,w,rx,cv,wx] = best_dir( x, [a , sx ] )
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 12
+best_dir_cov
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 308
+ [cv,wx] = best_dir_cov(x,a,sx,wd)
+
+ x D x P :
+ a P x W : Same as in best_dir, but sx is compulsory.
+ sx P x 1 :
+
+ wd (W+D) x 1 : ML estimate of [w;d]
+
+ cv (W+D)x(W+D) : Covariance of the ML estimator at [w;d]
+
+ wx (W+D)x(P*D) : derivatives of ML estimate wrt to observations
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 80
+ [cv,wx] = best_dir_cov(x,a,sx,wd)
+
+ x D x P :
+ a P x W :
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 12
+bound_convex
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 164
+ y = bound_convex(d,h,x,pad=0)
+
+ y : 3xQ : Corners that define the convex hull of the projection of x
+ in the plane d*y == v. The corners are sorted.
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 32
+ y = bound_convex(d,h,x,pad=0)
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 13
+checker_color
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 41
+ col = checker_color (R,C, checker, col)
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 41
+ col = checker_color (R,C, checker, col)
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 9
+data2vrml
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 284
+ s = data2vrml (typeStr, value) - Convert 'value' to VRML code of type typeStr
+
+ TODO: Improve this function
+
+ If typeStr is "SFBool", then s is "TRUE" or "FALSE"
+ If typeStr is "MFString", then s is sprintf ("%s", value)
+ otherwise s is sprintf ("%f", value)
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 79
+ s = data2vrml (typeStr, value) - Convert 'value' to VRML code of type typeStr
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 7
+proplan
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 82
+ x = proplan(x,d,v=1)
+
+ orthogonally project x to the affine plane d*x == v
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 28
+ x = proplan(x,d,v=1)
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 9
+save_vrml
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 404
+ save_vrml(outname,[options],s1,...) - Save vrml code
+
+ Makes a vrml2 file from strings of vrml code. A "background" node is
+ added.
+
+ Options :
+ "nobg"
+ "nolight"
+
+ Bugs :
+ - "outname" should not contain the substring ".wrl" anywhere else
+ than as a suffix.
+ - "outname" should only contain the character ">" as ">>" at the
+ beginning , to indicate append rather than overwriting the
+ file.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 33
+ save_vrml(outname,[options],s1,.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 16
+test_moving_surf
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 36
+key test_moving_surf
+
+ Test vmesh.m
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 21
+key test_moving_surf
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 10
+test_vmesh
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 30
+key test_vmesh
+
+ Test vmesh.m
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 15
+key test_vmesh
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 15
+test_vrml_faces
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 46
+ Test that vrml_faces works with "tex" option
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 46
+ Test that vrml_faces works with "tex" option
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 5
+vmesh
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 2329
+ s = vmesh (x, y, z [, options] ) - Visualize a 3D surface
+ s = vmesh (z [, options] )
+
+ Visualizes a 3D surface. Returns the VRML code.
+
+ x : RxC or C : X coordinates of the points on the surface
+ y : RxC or R : Y " "
+ z : RxC : Z " "
+
+ s : string : The code
+
+ If x and y are omitted, they are assumed to be linspace(-1,1,C or R).
+ Points presenting one or more 'inf' or 'nan' coordinates are ignored.
+
+ Options : (all options of vrml_surf may be used too)
+
+ "col" , col : 3 : RGB Color, Default = [0.3,0.4,0.9]
+ or 3x(R*C): Color of vertices (vrml colorPerVertex is TRUE).
+ or 3x((R-1)*(C-1))
+ : Color of facets
+ or 1 : Reflectivity (equivalent to [col,col,col] in RGB)
+ or R x C : Reflectivity of vertices
+ or 1x(R*C)
+ or (R-1)x(C-1)
+ or (R-1)*(C-1)
+ : Reflectivity of facets.
+
+ RGB and reflectivity values should be in the [0,1] interval.
+
+ "checker", c : 1x2 : Color as a checker. If c(1) is positive, checker has
+ c(1) rows. If it is negative, each checker row is
+ c(1) facets high. c(2) does the same for columns.
+ or 1x1 : Same as [c,c].
+
+ "zgray" : Color varies from black for lowest point to white
+ for highest.
+
+ "zrb" : Color varies from blue for lowest point to red for
+ highest.
+
+ "zcol", zcol : Mx3 : Color is linearly interpolated between the RGB
+ values specified by the rows of zcol.
+
+ "steps" : Represent surface as a piecewise constant Z = f(X,Y)
+ function
+
+ "bars" : Represent surface as a bar plot
+ "bwid" : Bar width, relative to point separation. Default = 2/3
+
+ "level", l : 1xN : Display one or more horizontal translucent plane(s)
+
+ z == l(i) (1 <= i <= length(l))
+
+ "lcol", lc : Nx3 : Color of the plane(s). Default = [.7 .7 .7]
+ "ltran",lt : Nx1 : Transparency of the plane(s). Default = 0.3
+ "tex", texFile
+
+ "normalize" : Normalize z to [-1,1]
+
+ See also: vrml_surf(), vrml_faces(), demo("vmesh")
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 80
+ s = vmesh (x, y, z [, options] ) - Visualize a 3D surface
+ s = vmesh (z [, opti
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 15
+vrml_Background
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 610
+ s = vrml_Background (...) - Vrml Background node
+
+ s is a string of the form :
+ ------------------------------------------------------------------
+ Background {
+ skyColor [0 0 0]
+ skyAngle [0]
+ groundColor [0 0 0]
+ groundangle [0]
+ backUrl ""
+ bottomUrl ""
+ frontUrl ""
+ leftUrl ""
+ rightUrl ""
+ topUrl ""
+ }
+ ------------------------------------------------------------------
+
+ Options :
+ All the fields of the node
+
+ Example : s = vrml_Background ("skyColor",[0 0 1]);
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 24
+ s = vrml_Background (.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 8
+vrml_Box
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 189
+ s = vrml_Box (sz) - Box { ... } node
+
+ If sz is not given, returns Box { }
+ If sz has size 1, returns Box { <sz> <sz> <sz> }
+ If sz has size 3, returns Box { <sz(1)> <sz(2)> <sz(3)> }
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 28
+ s = vrml_Box (sz) - Box { .
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 21
+vrml_DirectionalLight
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 617
+ s = vrml_DirectionalLight (...) - Vrml DirectionalLight node
+
+ s is a string of the form :
+ ------------------------------------------------------------------
+ DirectionalLight {
+ exposedField SFFloat ambientIntensity 0 # [0,1]
+ exposedField SFColor color 1 1 1 # [0,1]
+ exposedField SFVec3f direction 0 0 -1 # (-,)
+ exposedField SFFloat intensity 1 # [0,1]
+ exposedField SFBool on TRUE
+ }
+ ------------------------------------------------------------------
+
+ Options :
+ All the fields of the node
+
+ See also : vrml_PointLight
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 30
+ s = vrml_DirectionalLight (.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 15
+vrml_PointLight
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 791
+ s = vrml_PointLight (...) - Vrml PointLight node
+
+ s is a string of the form :
+ ------------------------------------------------------------------
+ PointLight {
+ exposedField SFFloat ambientIntensity 0 ## [0,1]
+ exposedField SFVec3f attenuation 1 0 0 ## [0,inf)
+ exposedField SFColor color 1 1 1 ## [0,1]
+ exposedField SFFloat intensity 1 ## [0,1]
+ exposedField SFVec3f location 0 0 0 ## (-inf,inf)
+ exposedField SFBool on TRUE
+ exposedField SFFloat radius 100 ## [0,inf)
+ }
+ ------------------------------------------------------------------
+
+ Options :
+ All the fields of the node
+
+ Example : s = vrml_PointLight ("location",[0 0 1]);
+
+ See also : vrml_DirectionalLight
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 24
+ s = vrml_PointLight (.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 10
+vrml_ROUTE
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 32
+ vrml_ROUTE (eventout, eventin)
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 32
+ vrml_ROUTE (eventout, eventin)
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 11
+vrml_Sphere
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 52
+ s = vrml_Sphere (radius) - VRML code for a sphere
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 52
+ s = vrml_Sphere (radius) - VRML code for a sphere
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 15
+vrml_TimeSensor
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 913
+ s = vrml_TimeSensor (...) - Low-level vrml TimeSensor node
+
+ s is a vrml node with possible fields :
+ ------------------------------------------------------------------
+ TimeSensor {
+ exposedField SFTime cycleInterval 1 # (0,inf)
+ exposedField SFBool enabled TRUE
+ exposedField SFBool loop FALSE
+ exposedField SFTime startTime 0 # (-inf,inf)
+ exposedField SFTime stopTime 0 # (-inf,inf)
+ eventOut SFTime cycleTime
+ eventOut SFFloat fraction_changed # [0, 1]
+ eventOut SFBool isActive
+ eventOut SFTime time
+ }
+ ------------------------------------------------------------------
+
+ Options :
+ Beyond all the fields of the node, it is also possible to use the option
+
+ "DEF", name : The created node will be preceded by 'DEF name ', so that
+ it is further possible to refer to it.
+
+ See also :
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 24
+ s = vrml_TimeSensor (.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 14
+vrml_Viewpoint
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 765
+ s = vrml_Viewpoint (...) - Vrml Viewpoint node
+
+ s is a string of the form :
+ ------------------------------------------------------------------
+ Viewpoint {
+ eventIn SFBool set_bind
+ exposedField SFFloat fieldOfView 0.785398 # (0,pi)
+ exposedField SFBool jump TRUE
+ exposedField SFRotation orientation 0 0 1 0 # [-1,1],(-pi,pi)
+ exposedField SFVec3f position 0 0 10 # (-,)
+ field SFString description ""
+ eventOut SFTime bindTime
+ eventOut SFBool isBound
+ }
+ ------------------------------------------------------------------
+
+ Options :
+ All the fields of the node
+
+ Example : s = vrml_Viewpoint ("location",[0 0 1]);
+
+ See also : vrml_DirectionalLight
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 23
+ s = vrml_Viewpoint (.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 9
+vrml_anim
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 168
+ s = vrml_anim (typ, val, eventin, time)
+
+ Assemble
+ - an interpolator of type typ, with values val
+ - a TimeSensor with period time
+ and route the event to eventin
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 41
+ s = vrml_anim (typ, val, eventin, time)
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 10
+vrml_arrow
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 827
+ s = vrml_arrow (sz, col) - Arrow pointing in "y" direction
+
+ INPUT :
+ -------
+ Arguments are optional. NaN's are replaced by default values.
+ <default>
+ sz = [len, alen, dc, dr] has size 1, 2, 3 or 4, where
+
+ len : total length <1>
+ alen : If positive: length of cone/total length <1/4>
+ If negative: -(length of cone)
+ dc : If positive: diameter of cone base/total len <1/16>
+ If negative: -(diameter of cone)
+ dr : If positive: diameter of rod/total length <min(dc, len/32)>
+ If negative: -(diameter of rod)
+
+ col : 3 or 3x2 : Color of body and cone <[0.3 0.4 0.9]>
+
+ OUTPUT :
+ --------
+ s : string : vrml representation of an arrow (a rod and a cone)
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 64
+ s = vrml_arrow (sz, col) - Arrow pointing in "y" direction
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 11
+vrml_browse
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 1134
+ p = vrml_browse ([s]) - View vrml code s with FreeWRL
+ vrml_browse ("-kill") - Kill the browser
+
+ s : string : VRML code, as returned by the vrml_XYZ functions.
+ If s is not specified, a sombrero is showed
+
+ p : int : pid of the current browser. If freewrl has not been started
+ or has died, a new one is started. p is zero or negative in
+ case of failure to start freewrl.
+
+ Some keystrokes for FreeWRL (more in the freewrl manpage) :
+
+ 'e' : Examine : mouse 1 and drag rotates the scene
+ mouse 3 and drag moves closer/farther
+ 'w' : Walk : mouse 1 and drag moves for/backward, turns
+ mouse 3 and drag translates parallel to the screen
+ 's' : Save a snapshot in files 'octave.snapshot.NNNN.ppm'
+ 'q' : Quit
+
+ WARNING : FreeWRL >0.25 (http://www.crc.ca/FreeWRL/) must be installed.
+
+ BUG : The vrml browser is not killed when octave exits. Sometimes the
+ vrml browser does not get raised or gets raised improperly
+ (shows the contents of the topmost window above it). Use
+ "-kill".
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 80
+ p = vrml_browse ([s]) - View vrml code s with FreeWRL
+ vrml_browse
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 8
+vrml_cyl
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 698
+ s = vrml_cyl(x,...)
+
+ Makes a cylinder that links x(:,1) to x(:,2)
+
+ Options :
+
+ "tran", transparency : Transparency default = 0
+ "col" , col : Color default = [ 0.3 0.4 0.9 ]
+ "rad" , radius : Radius of segments default = 0.05
+ "balls" : Add balls to extremities
+ "brad" : Radius of balls default = rad
+ "emit", bool : Use or not emissiveColor
+ "noemit" : Same as emit,0
+ "arrow" : Last segment is an arrow
+ "hcol", hcol : Set color of the head of the arrow.
+ default = col
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 23
+ s = vrml_cyl(x,.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 20
+vrml_demo_tutorial_1
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 11
+ Listing 1
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 11
+ Listing 1
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 20
+vrml_demo_tutorial_2
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 11
+ Listing 2
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 11
+ Listing 2
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 20
+vrml_demo_tutorial_3
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 11
+ Listing 3
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 11
+ Listing 3
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 20
+vrml_demo_tutorial_4
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 11
+ Listing 4
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 11
+ Listing 4
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 14
+vrml_ellipsoid
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 272
+ v = vrml_ellipsoid (moment, col) - Ellipsoid
+
+ moment : 3x3 : Define elipsoid by x'*moment*x = 1
+ or 3 : use diag(moment)
+ or 1 : use diag(moment([1,1,1])) default : eye(3)
+
+ col : 3 : Color default : [0.3 0.4 0.9]
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 53
+ v = vrml_ellipsoid (moment, col) - Ellipsoid
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 10
+vrml_faces
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 2071
+ s = vrml_faces(x,f,...) - VRML facet object (IndexedFaceSet node)
+
+ x : 3xP : The 3D points
+ f : 3xQ : The indexes of the points forming the faces. Indexes
+ should have values in 1:P.
+
+ Returns a Shape -> IndexedFaceSet vrml node.
+
+ No check is done on anything
+
+ Options :
+
+ "col" , col : 3 : Color, default = [0.3,0.4,0.9]
+ or 3xP : Color of vertices
+ or 3xQ : Color of facets (use "colorPerVertex" below to
+ disambiguate the case P==Q).
+
+ "emit", em : 3 : Emissive color of the surface
+ : 3XP : (same as color)
+ : 3xQ :
+ : 1 : Use color as emissive color too default = 0
+
+ "tran", tran : 1x1 : Transparency, default = 0
+
+ "creaseAngle", a
+ : 1 : vrml creaseAngle value. The browser may smoothe the
+ crease between facets whose angle is less than a.
+ default = 0
+ "tex", texfile
+ : string : Name of file containing texture. default : none
+
+ "imsz", sz : 2 : Size of texture image
+ default is determined by imginfo()
+
+ "tcoord", tcoord
+ : 2x3Q : Coordinates of vertices in texture image. Each 2x3
+ block contains coords of one facet's corners. The
+ coordinates should be in [0,1], as in a VRML
+ TextureCoordinate node.
+ default assumes faces are returned
+ by extex()
+
+ "smooth" : same as "creaseAngle",pi.
+ "convex"
+ "colorPerVertex", c: If 1, col specifies color of vertices. If 0,
+ col specifies color of facets. Default = 1
+
+ "DEFcoord",n : string : DEF the coord VRML node with name n. Default = ''
+ "DEFcol", n : string : DEF the color VRML node with name n. Default = ''
+
+ See also: vrml_surf(), vmesh(), test_vrml_faces()
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 21
+ s = vrml_faces(x,f,.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 12
+vrml_flatten
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 497
+ s = vrml_flatten (x [, d, w, col]) - A planar surface containing x
+
+ If the points x are not coplanar (or not in the affine plane {y|d'*y==w}),
+ the surface will not contain the points, but rather their projections on
+ the plane {y|d'*y==w}.
+
+ x : 3 x P : 3D points
+ d : 3 : normal to plane | Default : given by best_dir()
+ w : 1 : intercept of plane |
+ col : 3 : RGB color Default : [0.3,0.4,0.9]
+
+ s : string : vrml code representing the planar surface
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 68
+ s = vrml_flatten (x [, d, w, col]) - A planar surface containing x
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 10
+vrml_frame
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 608
+ v = vrml_frame (t, r, ...)
+
+ t : 3 Translation Default : [0,0,0]
+ r : 3x3 Matrix, or Default : eye(3)
+ 3 Argument for rotv
+ OPTIONS
+ name : size : function : default
+ "scale" : 3 or 1 : Length of frame's branches (including cone) <1>
+ "diam" : 3 or 1 : Diameter of cone's base
+ "col" : 3 or 3x3 : Color of branches (may be stacked vertically) <[3 4 9]/10>
+ "hcol" : 3 or 3x3 : Color of head (may be stacked vertically) <col>
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 30
+ v = vrml_frame (t, r, .
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 10
+vrml_group
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 71
+ v = vrml_group (s1, s2 ... ) - Form a group node with children s1,...
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 25
+ v = vrml_group (s1, s2 .
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 11
+vrml_interp
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 32
+ s = vrml_interp (typ, val,...)
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 28
+ s = vrml_interp (typ, val,.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 9
+vrml_kill
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 190
+ p = vrml_kill () - Kill the current vrml browser
+
+ If a vrml browser has previously been launched with vrml_browse(), it
+ will be sent a KILL signal.
+
+ See also : vrml_browse.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 80
+ p = vrml_kill () - Kill the current vrml browser
+
+ If a vrml brows
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 10
+vrml_lines
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 289
+ s = vrml_lines(x,f,...)
+
+ x : 3xP : The 3D points
+ f : 3xQ : The indexes of the points forming the lines. Indexes
+ should be in 1:P.
+
+ Returns a Shape -> IndexedLineSet vrml node.
+
+ No check is done on anything
+
+ Options :
+
+ "col" , col : 3x1 : Color, default = [1,0,0]
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 21
+ s = vrml_lines(x,f,.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 13
+vrml_material
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 266
+ s = vrml_material (dc,ec,tr) - Returns a "material" vrml node
+
+ dc : 3x1 : diffuseColor
+ ec : 3x1 : emissiveColor
+ or 1x1 : use dc as emissiveColor if ec is true. Default = 0
+ tr : 1x1 : transparency Default = 0
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 64
+ s = vrml_material (dc,ec,tr) - Returns a "material" vrml node
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 12
+vrml_newname
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 100
+ n = vrml_newname (root) - A name for a vrml node, starting by root
+
+ vrml_newname ("-clear")
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 80
+ n = vrml_newname (root) - A name for a vrml node, starting by root
+
+ vrml
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 19
+vrml_parallelepiped
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 321
+ s = vrml_parallelogram (bnds,...)
+
+ bnds = [xmin, ymin, zmin; xmax, ymax, zmax]
+
+ OPTIONS :
+ ---------
+ col, c : 3x1 : Color of surface
+ emit, e : 1 :
+ tran, t : 1 :
+
+ border,b : 1 :
+ bocol, c : 3 :
+ boemit,e : 1 :
+ borad, r : 1 :
+
+ balls, b : 1 :
+ bcol, c : 3 :
+ bemit, e : 1 :
+ brad, r : 1 :
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 31
+ s = vrml_parallelogram (bnds,.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 18
+vrml_parallelogram
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 371
+ s = vrml_parallelogram (x,...)
+
+ x : 3 x 3 : Each column is a 3D point. The fourth corner is
+ x(:,1)-x(:,2)+x(:,3)
+
+ OPTIONS :
+ ---------
+ col, c : 3x1 : Color of surface
+ emit, e : 1 :
+ tran, t : 1 :
+
+ border,b : 1 :
+ bocol, c : 3 :
+ boemit,e : 1 :
+ borad, r : 1 :
+
+ balls, b : 1 :
+ bcol, c : 3 :
+ bemit, e : 1 :
+ brad, r : 1 :
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 28
+ s = vrml_parallelogram (x,.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 11
+vrml_points
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 1462
+ s = vrml_points(x,options)
+
+ x : 3xP : 3D points
+
+ Makes a vrml2 "point [ ... ]" node from a 3xP matrix x.
+
+ OPTIONS (name and size/type, if applicable):
+ ---------------------------------------
+ "balls" : Displays spheres rather than points. Overrides the
+ "hide" options and no Coordinate node is defined;makes
+ "name" ineffective.
+
+ "boxes" or
+ "cubes" : Displays cubes rather than points. Overrides the "hide"
+ options and no Coordinate node is defined;makes "name"
+ ineffective.
+
+ "rad", 1 or P: Radius of balls/size of cubes. default = 0.1
+
+ "nums" : Displays numbers rather than points. Overrides the
+ "hide" options and no Coordinate node is defined;
+ makes "name" ineffective.
+
+ WARNING : This option seems to make freewrl 0.34 hang, so that it
+ is necessary to kill it (do vrml_browse ("-kill")). Other
+ browsers can can view the code produced by this option.
+
+ "col", 3x1 : Points will have RGB col. default = [0.3,0.4,0.9]
+ or 3xP : The color of each point.
+ "tran", 1x1 : Transparency default = 0
+ "emit", e : Use or not emissiveColor default = 1
+
+ "name", str : The Coordinate node will be called name
+ (default="allpoints").
+ "hide" : The points will be defined, but not showed.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 59
+ s = vrml_points(x,options)
+
+ x : 3xP : 3D points
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 9
+vrml_surf
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 2206
+ s = vrml_surf (x, y, z [, options] ) - code for a VRML surface
+ s = vrml_surf (z [, options] )
+
+ Returns vrml97 code for a Shape -> IndexedFaceSet node representing a
+ surface passing through the given points.
+
+ x : RxC or C : X coordinates of the points on the surface
+ y : RxC or R : Y " "
+ z : RxC : Z " "
+
+ s : string : The code
+
+ If x and y are omitted, they are assumed to be linspace(-1,1,C or R).
+ Points presenting one or more 'inf' or 'nan' coordinates are ignored.
+
+ Options :
+
+ "col" , col : 3 : RGB Color, default = [0.3,0.4,0.9]
+ or 3x(R*C): Color of vertices (vrml colorPerVertex is TRUE).
+ or 3x((R-1)*(C-1))
+ : Color of facets
+ or 1 : Reflectivity (equivalent to [col,col,col] in RGB)
+ or R x C : Reflectivity of vertices
+ or 1x(R*C)
+ or (R-1)x(C-1)
+ or (R-1)*(C-1)
+ : Reflectivity of facets.
+
+ RGB and reflectivity values should be in the [0,1] interval.
+
+ "checker", c : 1x2 : Color as a checker. If c(1) is positive, checker has
+ c(1) rows. If it is negative, each checker row is c(1) facets
+ high c(2) likewise determines width of checker columns.
+ "checker", c : 1x1 : Same as [c,c].
+
+ "zcol", zc : 3xN : Specify a colormap. The color of each vertex is
+ interpolated according to its height (z).
+
+ "zgray" : Black-to-white colormap. Same as "zcol", [0 1;0 1;0 1].
+
+ "zrb" : Red-to-blue. Same as "zcol", [0 7 10;0 0 2;7 19 2]/10.
+
+ "steps" : Represent surface as a piecewise constant Z = f(X,Y) function
+
+ "bars" : Represent surface as a bar plot
+
+ "tran", tran : 1x1 : Transparency, default = 0
+
+ "creaseAngle", a
+ : 1 : vrml creaseAngle The browser may smoothe the fold
+ between facets forming an angle less than a.
+ default = 0
+ "smooth" : same as "creaseAngle",pi.
+ "tex", texFile
+
+ See also: vmesh(), vrml_faces(), test_moving_surf()
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 80
+ s = vrml_surf (x, y, z [, options] ) - code for a VRML surface
+ s = vrml_surf (
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 9
+vrml_text
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 533
+ s = vrml_text(t,...)
+
+ Makes vrml Shape node representing string t
+
+ Options :
+
+ "col" , col : default = [ 0.3 0.4 0.9 ]
+ "size" , size : default = 1.0
+ "family", family : default = "SERIF".
+ (could also be : "TYPEWRITER", "SANS")
+ "style", style : default = "PLAIN".
+ (could also be : "BOLD", "ITALIC", "BOLDITALIC")
+ "justify", justify : default = "MIDDLE"
+ (could also be "FIRST", "BEGIN", "END")
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 24
+ s = vrml_text(t,.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 15
+vrml_thick_surf
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 1178
+ s = vrml_thick_surf (x, y, z [, options] )
+ s = vrml_thick_surf (z [, options] )
+
+ Returns vrml97 code for a Shape -> IndexedFaceSet node representing a
+ surface passing through the given points.
+
+ The surface may look smoother than that returned by vrml_surf, but it
+ has twice as many facets.
+
+ x : RxC or C : X coordinates of the points on the surface
+ y : RxC or R : Y " "
+ z : RxC : Z " "
+
+ s : string : The code
+
+ If x and y are omitted, they are assumed to be 1:C and 1:R, resp
+ Points presenting one or more 'inf' or 'nan' coordinates are ignored.
+
+ Options :
+
+ "col" , col : 3 : Color, default = [0.3,0.4,0.9]
+ or 3xP : color of vertices (vrml colorPerVertex is TRUE).
+
+ "tran", tran : 1x1 : Transparency, default = 0
+
+ "creaseAngle", a
+ : 1 : vrml creaseAngle value. The browser may smoothe the
+ crease between facets whose angle is less than a.
+ default = 0
+ "smooth" : same as "creaseAngle",pi.
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 80
+ s = vrml_thick_surf (x, y, z [, options] )
+ s = vrml_thick_surf (z
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 12
+vrml_transfo
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 483
+ v = vrml_transfo(s,t,r,c,d)
+
+ s : string of vrml code.
+ t : 3 Translation default : [0,0,0]
+ r : 3x3 Rotation matrix, or default : eye(3)
+ 3 Scaled rotation axis.
+ c : 3 or 1 Scale default : 1
+ d : string DEF name default : ''
+
+ v : string v is s, enclosed in a Transform {} vrml node with
+ rotation, translation and scale params given by r, t and c.
+
+
+
+
+# name: <cell-element>
+# type: sq_string
+# elements: 1
+# length: 63
+ v = vrml_transfo(s,t,r,c,d)
+
+ s : string of vrml code.
+
+
+
+
+
git://git.creatis.insa-lyon.fr / CreaPhase.git / blobdiff