Scilab Data type

figure_properties - description of the graphics figure entity properties

### Description

The figure entity is the top level of the graphics entities hierarchy. This entity contain a number of properties designed to control many aspects of displaying Scilab graphics objects. These properties fall into two categories. Properties that contain information about figure itself and others related to set default values for the children creation.
- Figure properties:
- figure_style: The value of this field difines the figure style, it should be `"old"` or `"new"`. The `"new"` value sets the entity based style. The `"old"` value represents the old Scilab graphic mode. In this case `figure_style` is the only defined property.
- figure_position: This field contains the position in pixel of the graphic window on the screen. The size is the vector `[x,y]`. The point `[0,0]` if the upper-left corner of the screen.
- figure_size: This property controls the size in pixel of the screen's graphics window. The size is the vector `[width,height]` .
- axes_size: Used to Specifies the size in pixel of the virtual graphics window. The size is the vector `[width,height]` . The virtual graphic window should be bigger than the part really visible on the screen.
- auto_resize: This property determines if graphics window is resized. If the value is `"on"` then the `axes_size` property is equaled to the `figure_size` and the axes children are zoomed accordingly. If the value is `"off"` that indicate that `axes_size` cannot be resized when `figure_size` is changed.
- figure_name: This field contains the name of the figure. This name is a character string displayed at the top of the graphics_window.
- figure_id: This field contains the identifier of the figure. This is a integer number which is prefexed to the figure_window, set at figure creation and cannot be changed after .
- color_map: Property which defines the colormap used by this figure. The colormap is a `m` by `3` matrix. `m` is the number of colors. Color number i is given as a 3-uple `R`, `G`, `B` corresponding respectively to red, green and blue intensity between 0 and 1
- background: This property controls the figure window background color. IT takes as value an index relative to the current colormap.
- pixel_drawing_mode: This field defines the bitwise operation used to draw the pixel on the screen. The default mode is `copy` what is to say the pixel is drawn as required. More generally the bitwise operation is performed between the color of the source pixel and the color of the pixel already present on the screen. operations are : `"clear"`, `"and"`, `"andReverse"` , `"copy"`, src `"andInverted"` , `"noop"` , `"xor"` , `"or"` , `"nor"` , `"equiv"` , `"invert"` , `"orReverse"` , `"copyInverted"` , `"orInverted"` , `"nand"` , `"set"` ,
- children: This handles represent the vector of the figure's children . Note that all figure children are of type `"Axes"`
- Children s default values:
- auto_scale: This field contains the default `auto_scale` property value for axes creation. It's value should be `"on"` or `"off"`
- auto_clear: This field contains the default `auto_clear` property value for axes creation. It's value should be `"on"` or `"off"`
- visible: This field contains the default `visible` property value for axes creation. It's value should be `"on"` or `"off"`
- line_style: This field contains the default `line_style` property value for Segs, Arcs, Rectangle and Polyline objects. `line_style` selects the type of line to be used to draw lines . It's value should be an integer in [0 9]. 0 stands for solid the other value stands for a selection of dashes.
- thickness: This field contains the default `thickness` property value for all objects using line drawing. It's value should be a non negative integer.
- fill_mode: This field contains the default `fill_mode` property value for Rectangle, Arcs and Polyline objects. It's value should be `"on"` or `"off"`. if the value is "on" the object is filled with the color given by it's "foreground" property value.
- mark_mode: This field contains the default `mark_mode` property value for Segs Rectangle and Polyline objects. It's value should be `"on"` or `"off"`.
- mark_style: This field contains the default `mark_style` property value for Segs Rectangle and Polyline objects. `mark_style` selects the type of mark to be displayed. It's value should be an integer in [0 9].
- mark_size: This field contains the default `mark_size` property value for Segs Rectangle and Polyline objects. `mark_style` selects the font size of mark to be displayed. It's value should be an integer in [0 9].
- foreground: This field contains the default `foreground` property value for all objects. It's value should be a color index (relative to the current colormap).
- clip_state: This field contains the default `clip_state` property value for all objects. It's value should be :
- `"off"` under this state all objects created are not clipped
- `"cliprf"` this means that all objects created after that are clipped outside the Axes rectangle.
- `"on"` objects created are clipped outside the rectangle given by the determinate property clip_box.
- clip_box: This field contains the default `clip_box` property value for all objects. Its value should be an empty matrix if clip_state is `"off"`. If not objects are clipped to the bounding box `[x,y,w,h]` (upper-left point, width, height)
- rotation_style: This field is related to the "3D Rot" button. It takes `unary` as value (default) in the aim to rotate only selected 3D plot. In the other case its value ca be `multiple` all 3D plots are rotated.

### Exemples

       set("figure_style","new") //create a figure
       f=get("current_figure") //get the handle of the newly created figure
       f.figure_position
       f.figure_size=[200,200]
       f.background=2

### Voir aussi

`set` `get` `delete` `axes_properties`

### Auteur

Djalel ABDEMOUCHE