## Diff of /inst/geom2d/drawParabola.m[347d75] .. [fc6c4c]  Maximize  Restore

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```--- a/inst/geom2d/drawParabola.m
+++ b/inst/geom2d/drawParabola.m
@@ -22,113 +22,113 @@
## 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.
-
-## -*- texinfo -*-
-## @deftypefn {Function File} {@var{h} = } drawParabola (@var{parabola})
-## @deftypefnx {Function File} {@var{h} = } drawParabola (@var{parabola}, @var{t})
-## @deftypefnx {Function File} {@var{h} = } drawParabola (@dots{}, @var{param}, @var{value})
-## Draw a parabola on the current axis.
-##
-##   drawParabola(PARABOLA);
-##   Draws a vertical parabola, defined by its vertex and its parameter.
-##   Such a parabola admits a vertical axis of symetry.
-##
-##   The algebraic equation of parabola is given by:
-##      (Y - YV) = A * (X - VX)^2
-##   Where XV and YV are vertex coordinates and A is parabola parameter.
-##
-##   A parametric equation of parabola is given by:
-##      x(t) = t + VX;
-##      y(t) = A * t^2 + VY;
-##
-##   PARABOLA can also be defined by [XV YV A THETA], with theta being the
-##   angle of rotation of the parabola (in degrees and Counter-Clockwise).
-##
-##   drawParabola(PARABOLA, T);
-##   Specifies which range of 't' are used for drawing parabola. If T is an
-##   array with only two values, the first and the last values are used as
-##   interval bounds, and several values are distributed within this
-##   interval.
-##
-##   drawParabola(..., NAME, VALUE);
-##   Can specify one or several graphical options using parameter name-value
-##   pairs.
-##
-##   H = drawParabola(...);
-##   Returns an handle to the created graphical object.
-##
-##
-##   Example:
-##   @example
-##   figure(1); clf; hold on;
-##   drawParabola([50 50 .2 30]);
-##   drawParabola([50 50 .2 30], [-1 1], 'color', 'r', 'linewidth', 2);
-##   axis equal;
-## @end example
-##
-##   @seealso{drawCircle, drawEllipse}
-## @end deftypefn
-
-function varargout = drawParabola(varargin)
-
-  # Extract parabola
-  if nargin<1
-      error('geom2d:IllegalArgument', ...
-  end
-
-  # input parabola is given as a packed array
-  parabola = varargin{1};
-  varargin(1) = [];
-  x0 = parabola(:,1);
-  y0 = parabola(:,2);
-  a  = parabola(:,3);
-
-  if size(parabola, 2)>3
-      theta = parabola(:, 4);
-  else
-      theta = zeros(length(a), 1);
-  end
-
-  # extract parametrisation bounds
-  bounds = [-100 100];
-  if ~isempty(varargin)
-      var = varargin{1};
-      if isnumeric(var)
-          bounds = var;
-          varargin(1) = [];
-      end
-  end
-
-  # create parametrisation
-  if length(bounds)>2
-      t = bounds;
-  else
-      t = linspace(bounds(1), bounds(end), 100);
-  end
-
-  # create handle array (in the case of several parabola)
-  h = zeros(size(x0));
-
-  # draw each parabola
-  for i=1:length(x0)
-      # compute transformation
-      trans = ...
-          createTranslation(x0(i), y0(i)) * ...
-          createScaling(1, a);
-
-	  # compute points on the parabola
-      [xt yt] = transformPoint(t(:), t(:).^2, trans);
-
-      # draw it
-      h(i) = plot(xt, yt, varargin{:});
-  end
-
-  # process output arguments
-  if nargout>0
-      varargout{1}=h;
-  end
-
-endfunction
-
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {@var{h} = } drawParabola (@var{parabola})
+## @deftypefnx {Function File} {@var{h} = } drawParabola (@var{parabola}, @var{t})
+## @deftypefnx {Function File} {@var{h} = } drawParabola (@dots{}, @var{param}, @var{value})
+## Draw a parabola on the current axis.
+##
+##   drawParabola(PARABOLA);
+##   Draws a vertical parabola, defined by its vertex and its parameter.
+##   Such a parabola admits a vertical axis of symetry.
+##
+##   The algebraic equation of parabola is given by:
+##      (Y - YV) = A * (X - VX)^2
+##   Where XV and YV are vertex coordinates and A is parabola parameter.
+##
+##   A parametric equation of parabola is given by:
+##      x(t) = t + VX;
+##      y(t) = A * t^2 + VY;
+##
+##   PARABOLA can also be defined by [XV YV A THETA], with theta being the
+##   angle of rotation of the parabola (in degrees and Counter-Clockwise).
+##
+##   drawParabola(PARABOLA, T);
+##   Specifies which range of 't' are used for drawing parabola. If T is an
+##   array with only two values, the first and the last values are used as
+##   interval bounds, and several values are distributed within this
+##   interval.
+##
+##   drawParabola(..., NAME, VALUE);
+##   Can specify one or several graphical options using parameter name-value
+##   pairs.
+##
+##   H = drawParabola(...);
+##   Returns an handle to the created graphical object.
+##
+##
+##   Example:
+##   @example
+##   figure(1); clf; hold on;
+##   drawParabola([50 50 .2 30]);
+##   drawParabola([50 50 .2 30], [-1 1], 'color', 'r', 'linewidth', 2);
+##   axis equal;
+## @end example
+##
+##   @seealso{drawCircle, drawEllipse}
+## @end deftypefn
+
+function varargout = drawParabola(varargin)
+
+  # Extract parabola
+  if nargin<1
+      error('geom2d:IllegalArgument', ...
+  end
+
+  # input parabola is given as a packed array
+  parabola = varargin{1};
+  varargin(1) = [];
+  x0 = parabola(:,1);
+  y0 = parabola(:,2);
+  a  = parabola(:,3);
+
+  if size(parabola, 2)>3
+      theta = parabola(:, 4);
+  else
+      theta = zeros(length(a), 1);
+  end
+
+  # extract parametrisation bounds
+  bounds = [-100 100];
+  if ~isempty(varargin)
+      var = varargin{1};
+      if isnumeric(var)
+          bounds = var;
+          varargin(1) = [];
+      end
+  end
+
+  # create parametrisation
+  if length(bounds)>2
+      t = bounds;
+  else
+      t = linspace(bounds(1), bounds(end), 100);
+  end
+
+  # create handle array (in the case of several parabola)
+  h = zeros(size(x0));
+
+  # draw each parabola
+  for i=1:length(x0)
+      # compute transformation
+      trans = ...
+          createTranslation(x0(i), y0(i)) * ...
+          createScaling(1, a);
+
+	  # compute points on the parabola
+      [xt yt] = transformPoint(t(:), t(:).^2, trans);
+
+      # draw it
+      h(i) = plot(xt, yt, varargin{:});
+  end
+
+  # process output arguments
+  if nargout>0
+      varargout{1}=h;
+  end
+
+endfunction
+
```