2.3.9.4  Continuous change to parameter

The states of Continuous change to parameter are listed in Table 16:

Table 16. Continuous states

A common feature of the states of Continuous change to parameter is that the program moves the objects on the screen continuously in the background (by a second program thread), controlled by the refresh cycle, i.e. there is no need to move the mouse, only to start up moving.

In the Simulation state, a second temporary program thread refreshes the screen, taking into account the current state of the object to change. The second program thread will start by pressing the Left mouse button, and stop by releasing the Left mouse button. On pressing the Left mouse button, the program will memorize the current state of the mouse on the screen, since it figures out the change to the object of the difference between the current state of the mouse point and the memorized initial position.

The larger the move of the mouse pointer as compared to the initial position, the larger the change to the object is, which the StatusBar will inform about.

The program gets in the states of Continuous change to parameter from the state of non-Continuous change to parameter, by pressing the Shift or Control key and the Left mouse button. After pressing the mouse button, keys can be released.

2.3.9.4.1  Move+

This is the continuous change to body position. The program will change the position and the view (see Change view) of the body simultaneously so that the body will stay in place on the screen and the other bodies seems to move. The background will move in the opposite direction, where the mouse will also move in. The default values for the velocity of move can be set in the dialog window Default properties, by the control Speeds/View.

2.3.9.4.2  Move select+

This is the continuous change to position of the bodies selected. The program will change the position of the bodies selected and the view (see Change view) simultaneously so that the bodies selected will stay in place on the screen and the bodies unselected seem to move. The bodies unselected will move in the opposite direction, where the mouse will also move in. The default values for the velocity of move can be set in the dialog window Default properties, by the control Speeds/View.

2.3.9.4.3  Velocity+

This is the continuous change to velocity vectors of the body. The program will change the velocity vector of the body and the view (see Change view) simultaneously so that the outer end of the body will stay in place on the screen and the background seems to move. The background will move in the opposite direction, where the mouse will also move in. The default values for the velocity of move can be set in the dialog window Default properties, by the control Speeds/View.

2.3.9.4.4  Velo select+

This is the continuous change to velocity vectors of the bodies selected. The program will change the velocity vectors of the bodies selected and the view (see Change view) simultaneously so that the outer end of the velocity vectors of the bodies selected will stay in place on the screen and the background seems to move. The background will move in the opposite direction, where the mouse will also move in. The default values for the velocity of move can be set in the dialog window Default properties, by the control Speeds/View.

2.3.9.4.5  View+

This is the continuous change to view in all directions. The background will move in the same direction, where the mouse will also move in. The default values for the velocity of move can be set in the dialog window Default properties, by the control Speeds/View.

View is described in more detail in the section Change view.

2.3.9.4.6  Zoom+

This is the continuous change to zoom, sensitive to vertical moves of the mouse alone. Moving the mouse pointer upward, you can zoom in, and downward you can zoom out. The default values for the velocity of move can be set in the dialog window Default properties, by the control Speeds/Zoom. Zoom is described in more detail in the section Zoom.

2.3.9.4.7  Zoom select+

The continuous zoom for bodies selected is sensitive to vertical move of the mouse alone. Moving the mouse pointer upward, you can zoom in, and downward you can zoom out. The default values for the velocity of move can be set in the dialog window Default properties, by the control Speeds/Zoom.