Clicking this button causes a new figure to be drawn using whatever parameters are currently defined by the other interface components. If you are using floating figures, Draw will pop-up a new window if necessary.
This button will lock all parameters to their current values. In other words, switch anything that is currently set at "Random" to be "Selected".To explore how the drawing algorithm works, try locking the figure, and turning off the visible animation, and then vary the various parameters individually.
Bring all components back to their original values -- all drawing parameters are re-selected randomly for each figure.
Controllers for Number of Lines, A Pulse, B Pulse, and Number of Colors all work quite similarly. You can use the scrollbar to adjust the value of the controller, or enter text directly with the keyboard. If you change the value, the mode will automatically switch from "Random" to "Selected". If the mode is "Random", a new value will be selected every time a figure is started.
On Number of Lines and Number of Colors you can also choose an upper bound on the value of the random numbers selected. The upper bound on A Pulse and B Pulse is one less than the current Number of Lines, so changing the latter may effect the value of the two pulses. Similarly, changing the upper bound on Number of Colors immediately effects how many colors are in the Palette.
The Show Animation and Auto Draw controllers work similarly to each other. If the main toggle button is turned off, the rest of the controller is not applicable, so it disappears.The former lets you adjust the number of milliseconds NINA should wait between each line of each figure, and the latter lets you set a number of seconds NINA should wait before automatically drawing a new figure. It appears that at least under Netscape, any delay of 4 milliseconds or less is treated as no delay at all.
Either four, eight, or sixteen colors will show up in the Palette at any time, depending on what you currently have set for the maximum in Number of Colors. Thus not every displayed color is necessarily used in every drawn figure. If "Random Palette" is selected you will get a new palette full of colors with every figure. If "Selected Palette" is set, you can press the "New Palette" button to replace all the colors. Click on any of the colors in order to change it individually (see below).
NOTE: Apparently the colors in the palette are not being displayed properly on Netscape for Windows. It works fine on X-Windows. If you know how to fix this, please let me know.
Clicking on any of the colors in the Palette will display the pop-up Color Chooser. Use the sliders or your keyboard to change the values for the Hue, Saturation, or Brightness of the color. Hue ranges from 1 to 360 degrees, Saturation and Brightness range from 0 to 100 percent.