Basic container for 2D drawing. A drawing panel is a view element able to display drawable objects within a rectangular region of the plane in which it defines a world coordinate system in user-provided coordinates. Drawables, or drawing elements, are graphical objects which draw themselves (in different forms) in a given position and with a given size within a drawing panel.
DrawingPanel 
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| Scales
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| Name
| Description
| Values accepted
| Default
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| Autoscale X
| Whether to automatically adjust X scales.
| A boolean variable or one of the constants true or false.
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| Autoscale Y
| Whether to automatically adjust Y scales.
| A boolean variable or one of the constants true or false.
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| Minimum X
| Minimum X value that can be displayed.
| A constant or variable of type double or int.
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| Maximum X
| Maximum X value that can be displayed.
| A constant or variable of type double or int.
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| Minimum Y
| Minimum Y value that can be displayed.
| A constant or variable of type double or int.
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| Maximum Y
| Maximum Y value that can be displayed.
| A constant or variable of type double or int.
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| Square
| Whether to keep a square aspect.
| A boolean variable or one of the constants true or false.
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| X Margin (%)
| The percentage of the margin in the autoscaled horizontal direction.
| A constant or variable of type double or int.
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| Y Margin (%)
| The percentage of the margin in the autoscaled vertical direction.
| A constant or variable of type double or int.
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| Interaction
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| Name
| Description
| Values accepted
| Default
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| Menu
| Display popup menus in this panel.
| A boolean variable or one of the constants true or false.
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| Menu Entry
| The name to display in the simulation’s corresponding elements menu entry.
| A string variable.
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| Pos X
| The X coordinate of the pointer.
| A constant or variable of type double or int.
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| Pos Y
| The Y coordinate of the pointer.
| A constant or variable of type double or int.
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| On Press
| The action to invoke when the element is pressed.
| The Java code to invoke for the action.
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| On Drag
| The action to invoke when the element is dragged.
| The Java code to invoke for the action.
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| On Release
| The action to invoke when the element is released.
| The Java code to invoke for the action.
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| On Enter
| The action to invoke when the mouse enters the element.
| The Java code to invoke for the action.
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| On Exit
| The action to invoke when the mouse leaves the element.
| The Java code to invoke for the action.
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| Key Action
| The action triggered when a key is pressed.
| The Java code to invoke for the action.
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| Key Pressed
| The integer code of the key pressed.
| A integer value.
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| Print Target
| The view element to print when taking a snapshot.
| A string constant or variable.
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| Configuration
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| Name
| Description
| Values accepted
| Default
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| Anti Aliasing
| Whether to smooth lines and texts in the panel.
| A boolean variable or one of the constants true or false.
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| Gutters
| Gutters around the drawing area.
| Type the size of the four gutters or use the editor provided.
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| Coordinates
| Whether to display coordinates when the mouse is pressed.
| A boolean variable or one of the constants true or false.
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| X Format
| The format to the X coordinate.
| The Format X property refers to the way the panel displays (in a yellow box at its lower left corner) the X coordinate when you click on a point in the panel. The special value null makes the panel not to display this coordinate.
| “x=0.000”
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| Y Format
| The format to the Y coordinate.
| The Format Y property refers to the way the panel displays (in a yellow box at its lower left corner) the Y coordinate when you click on a point in the panel. The special value null makes the panel not to display this coordinate.
| “y=0.000”
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| Messages
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| Name
| Description
| Values accepted
| Default
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| Expression
| An additional (x,y) expression to display.
| ????
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| Expr Format
| The format for the expression.
| ????
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| TL Message
| The message to display at the top-left corner.
| A string constant or variable.
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| TR Message
| The message to display at the top-right corner.
| A string constant or variable.
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| BL Message
| The message to display at the bottom-left corner.
| A string constant or variable.
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| BR Message
| The message to display at the bottom-right corner.
| A string constant or variable.
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| Graphical Aspect
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| Name
| Description
| Values accepted
| Default
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| Visible
| The visibility of the element.
| A boolean variable or one of the constants true or false.
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| Size
| The double[] array with the size of the panel in each direction.
| Type the two size values or use the editor provided.
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| Background
| The background color for the element.
| Use the editor provided or read about colors.
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| Foreground
| The color to use when drawing or writing in the element.
| Use the editor provided or read about colors.
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| Font
| The font used to display text in the element.
| Use the editor provided to select name, style and size of the font.
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| Tooltip
| Text displayed when the mouse is over the element.
| A string constant or variable.
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