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Set of traces

A set is just an empty element, that can host other elements (and sets). As such, a set has a position and a size, and accepts a transformation, but you need to add other elements to the set to make it display anything on the panel. The great advantage of sets is that they allow manipulation of collections of other drawables as a whole.

 

Properties

TraceSet  
Number of elements  
Name Description Values accepted Default
#Elements The number of elements in the set. An integer value.
Input  
Name Description Values accepted Default
Input X The X coordinate of the point to add. A constant or variable of type int, double or double[].
Input Y The Y coordinate of the point to add. A constant or variable of type int, double or double[].
Position and Size  
Name Description Values accepted Default
Position X The X coordinate for the elements. A constant or variable of type double, int or double[].
Position Y The Y coordinate for the elements. A constant or variable of type double, int or double[].
Position [] The double[][] array with the coordinates of the elements. A double matrix.
Size X The size of the element in the X direction. A constant or variable of type double, int or double[].
Size Y The size of the element in the Y direction. A constant or variable of type double, int or double[].
Size [] The array with the size of the element in each coordinate. A double matrix.
Memory  
Name Description Values accepted Default
Memory The number of series to remember (included the current one). A constant or variable of type int. Use an array to assign a different value to each element
Mem Display How the series in memory are displayed. Use the editor provided to make your choice or type an integer. Use an array to assign a different choice to each element
Mem Color The color used to display the previous series of points. Use the editor provided or read about colors. Use an array to assign a different color to each element
Visibility and Interaction  
Name Description Values accepted Default
Menu Entry The name to display in the simulation’s corresponding menu entry. A string variable.
Visible The visibility of the elements. A boolean variable or a boolean array with true or false values.
Measured Whether the element affects its parent panel’s autoscaling. A boolean variable or one of the constants true or false.
Draggable Whether the elements can be moved. A boolean variable or a boolean array with true or false values.
Sensitivity The size of the hot spot (in pixels). A constant or variable of type int, 0 makes the full particle the hot spot.
Interaction Index The index of the element affected by the interaction. An integer value.
On Press The action to invoke when the element is pressed. The Java code to invoke for the action.
On Drag The action to invoke when the element is dragged. The Java code to invoke for the action.
On Release The action to invoke when the element is released. The Java code to invoke for the action.
On Enter The action to invoke when the mouse enters the element. The Java code to invoke for the action.
On Exit The action to invoke when the mouse leaves the element. The Java code to invoke for the action.
Graphical Aspect  
Name Description Values accepted Default
Max Points The maximum number of points of the element. A constant or variable of type int. Use an array to assign a maximum to each element.
Clear at Input Whether to clear old data whenever new data gets in. A boolean variable or a boolean array with true or false values.
Skip The number of input points to skip before plotting one. A constant or variable of type int. Use an array to assign a different value to each element.
Active Whether the element actually accepts input data. A boolean variable or a boolean array with true or false values.
No repeat Whether to ignore equal succesive points. A boolean variable or a boolean array with true or false values.
Connected Whether to connect each point to the next one. A boolean variable or a boolean array with true or false values.
Line Color The color used for the lines of the element. Use the editor provided or read about colors.
Stroke The thickness and line style for the lines of the element. A constant or variable of type double or int or an Object.
Table Labels  
Name Description Values accepted Default
X Data Col The label for the X column when displayed in a data tool. A constant or variable of type String or String[].
Y Data Col The label for the Y column when displayed in a data tool. A constant or variable of type String or String[].
Marker Shape The type of marker to draw. Use the editor provided to make your choice or type an integer. Use an array to assign a different shape to each element.
Marker Size The size of the marker (in pixels). A constant or variable of type int. Use an array to assign a different size to each element.
Marker Color The color used for the markers. Use the editor provided or read about colors. Use an array to assign a different color to each element
Offset The relative drawing position of the markers. Use the editor provided or read about positions. Use an array to assign a different position to each element
Rotate The (counter-clockwise) rotation angle to apply to the markers. A constant or variable of type double or int. Use an array to assign a different angle to each element

 

Methods

 

  • org.opensourcephysics.displayejs.InteractiveElement elementAt(int index); returns the element in the set with that index. You may need to typecast the result to apply some methods, as in,

org.opensourcephysics.displayejs.InteractiveTrace firstTrace = (org.opensourcephysics.displayejs.InteractiveTrace) elementAt(0);


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Page last modified on February 27, 2013, at 01:47 PM