Scilab Data type

param3d_properties - description of the 3D curves entities properties

### Description

The Param3d entity is a leaf of the graphics entities hierarchy. This entity is still under developpement and will problably evolve a lot. In particular we intend to extend the Axes data structure to 3D and split the Axes properties and Param3d drawing properties similarily to the 2D case.
- visible: This field contains the `visible` property value for the entity . It should be `"on"` or `"off"` . By default, the curves are visibles, the value's property is `"on"` . If `"off"` the curves are not drawn on the screen.
- data: This field contains the coordinates of the 3d curves. it is the matrix `[X,Y,Z]` such as `X(:,i)`, `Y(:,i)`, `Z(:,i)` contain the 3D coordinates of the `i`'th curve.
- data_bounds: This field contains the boundary values for the x, y and z coordinates. It is the matrix `[xmin,xmax;ymin,ymax;zmin,zmax]`.
- flags: A real vector of size three `flag=[type,box,unused]`.

  `type`is an integer (scaling) where:
- if type=0 the plot is made using the current 3D scaling (set by a previous call to `param3d`,`plot3d` `plot3d`
- type=1 :rescales automatically 3d boxes with extreme aspect ratios, the boundaries are specified by the value of the property `data_bounds`.
- type=2 :rescales automatically 3d boxes with extreme aspect ratios, the boundaries are computed using the given data.
- type=3 :3d isometric with box bounds given by the property `data_bounds`.
- type=4 :3d isometric bounds derived from the data.
- type=5 :3d expanded isometric bounds with box bounds given by the property `data_bounds`.
- thickness: This field contains the default `thickness` value of the lines used to draw the axes and the curves. It should be a positive integer.
- foreground: This field contains the color index used to draw the axes and the curves. Its value should be a color index (relative to the current colormap).
- rotation_angles: This field is the vector `[theta,alpha]`. These two values give the spherical coordinates of the observation points (in degree).
- surface_color: This property contains the vector of color indices used to draw each curve.
- parent: This property contains the handle of the parent. The parent of the 3D curves entity should be of the type `"Axes"` .

### Exemples

       set("figure_style","new") //create a figure
       a=get("current_axes");//get the handle of the newly created axes
       t=[0:0.1:5*%pi]';
       param3d1([sin(t),sin(2*t)],[cos(t),cos(2*t)],[t/10,sin(t)])

       h=a.children //get the handle of the param3d entity
       h.rotation_angles=[65,75];
       h.surface_color=[3 5];
       h.flag=[1,2,3];
       h.data_bounds=[-1,-1,-1;1,1,2]; //boundaries given by data_bounds
       h.flag=[2 5 0];
       h.thickness = 2;

### Voir aussi

`set` `get` `delete` `param3d` `param3d1` `graphics_entities`

### Auteur

Djalel ABDEMOUCHE