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iimouse

• On,Off
• clip [Start,Undo]
• zoom
• Cursor
• Interactions
• move
• text
• view,cv

Purpose

Mouse related callbacks for GUI figures.

Syntax

iimouse
iimouse('ModeName')
iimouse('ModeName',Handle)

Description

iimouse is the general function used by feplot and iiplot to handle graphical inputs. While it is designed for SDT generated figures, iimouse can be used with any figure (make the figure active and type iimouse).

The main mouse mode is linked supports zooming and axis/object selection (see zoom). Context menus are associated to many objects and allow typical modifications of each object. When an axis is selected (when you pressed a button while your mouse was over it), iimouse reacts to a number of keys (see key). An active cursor mode (see Cursor) has replaced the information part of previous versions of iimouse. 3-D orientation is handled by view commands.

On,Off

iimouse with no argument (which is the same as iimouse('on')) turn zoom, key and context menu on.

In detail, the figure is made Interruptible, WindowButtonDownFcn is set to iimouse('zoom') and KeyPressFcn to iimouse('key')).

Plot functions (iiplot, feplot) start iimouse automatically.

iimouse off turns all iimouse callbacks off.

clip [Start,Undo]

This command is used to eliminate faces not contained within the area that the user selects with a dragging box. ClipUndo clears the current axis and calls feplot to reinitialize the plot.

zoom

This is basic mode of iimouse, it supports

• click and drag zoom into an area for both 2-D and 3-D plots (even when using perspective).
• zoom out to initial limits is obtained with a double click or the i key (on some systems the double click can be hard to control).
• active axis selection. iimouse makes the axis on which you clicked or the closest to where you clicked active (it becomes the current axis for feplot and iiplot figures).
• colorbar and triax axes automatically enter the move mode when made active
• legend axes are left alone but kept on top of other axes.

Context menus are described in section 2.1.1 and section 4.4.1.

Cursor

When you start the cursor mode (using the context menu opened with the right mouse button or by typing the c key), you obtain a red pointer that follows your mouse while displaying information about the object that you are pointing at. You can stop the cursor mode by clicking in the figure with your right mouse button or the c key. The object information area can be hidden by clicking on it with the right mouse button.

For feplot figures, additional information about the elements linked to the current point can be obtained in the MATLAB command window by clicking in the figure with the left button. By default, the cursor follows nodes of the first object in the feplot drawing axis. If you click on another object, the cursor starts pointing at it. In the wire-frame representation, particularly when using OpenGL rendering, it may be difficult to change object, the n key thus forces the cursor to point to the next object. Especially with FEM, it is sometimes difficult to prevent the selection of a node below the surface : the mode CursorSurface in the context menu enforces that only nodes in the forefront from the camera point of view are reachable.

For iiplot axes, the cursor is a vertical line with circles on each data set and the information shows the associated data sets and values currently pointed at.

For ii_mac axes the current value of the MAC is shown.

Interactions

Generic description of interactions is given at interactURN. The list of base interactions is accessible using menu_generation('interact'),
menu_generation('interact.iiplot'), ...

KeyVal key interactions are directly available pressing keys (actually on key release to allow key+mouse interactions) when plot axis is active (to make it active just click on it with your mouse). Typical key interactions are

For feplot interactivity see Interact.

move

The object that you decided to move (axes and text objects) follows your mouse until you click on a final desired position. This mode is used for triax (created by feplot) and colorbar axes, as well as text objects when you start move using the context menu (right button click to open this menu).

The moveaxis used for legend as a slightly different behavior. It typically moves the axis while you keep the button pressed.

You can call move yourself with iimouse('move',Handle) where Handle must be a valid axes or text object handle.

text

This series of commands supports the creation of a context menu for text objects which allows modification of font properties (it calls uisetfont), editing of the text string (it calls edtext), mouse change of the position (it calls iimouse), and deletion of the text object.

You can make your own text objects active by using iimouse('textmenu',Handle) where Handle must contain valid text object handle(s).

view,cv

iimouse supports interactive changes in the 3-D perspective of axes. Object views are controlled using azimuth and elevation (which control the orientation vector linking the CameraTarget and the CameraPosition) and self rotation (which control the CameraUpVector). You can directly modify the view of the current axis using the MATLAB view and cameramenu functions but additional capabilities and automated orientation of triax axes are supported by iimouse.

All angles should be specified in degrees.

iimouse key supports rotations by +/- 10 degrees around the current horizontal, vertical and line of sight axes when any of the u, U, v, V, w, W keys are pressed (same as fecom('viewh-10') ...). 1, 2, 3, 4 return to basic 2-D and 3-D views.

iimouse('cv') returns current view information you can then set other axes with iimouse('view',AxesHandles,cv).

The 10 numbers in the matrix cv correspond to the Camera properties of the axis in this order : CameraPosition, CameraTarget, CameraUpVector and CameraViewAngle

See also

iicom, fecom, iiplot