Da Vinci Tutorial #3:  Using the filter drawing mode.
     By Stephen White

The following functions will be demonstrated by this tutorial:
     Running Da Vinci's art program.
     Loading a picture.
     Using the ellipse "to brush" option.
     Selecting a palette color.
     Using the filter drawing mode.
     Using freehand draw.

Introduction:

     This tutorial was designed to demonstrate how to use a few of 
Da Vinci's features to create a simple landscape, with the 
emphasis of this tutorial being on how to use Da Vinci's filter 
drawing mode.

     Each step of this tutorial is explained in great detail, but 
don't bother reading the entire description of a step which you 
already know how to do.  For example, how to select a palette 
color is explained in this tutorial.  If you already know how to 
select a palette color, then just select the specified palette 
color and skip to the next step.

     For a more thorough description of any of Da Vinci's 
functions, refer to the proper section in Da Vinci's manual.

Using the filter drawing mode:

Step 1.  Run Da Vinci's art program.
     To run Da Vinci from Desktop, insert disk 1 into a disk 
drive.  Open a directory of that drive.  This is done by double 
clicking on the drive's icon.  If a directory of that drive is 
already open, then press the 'esc' key on the keyboard so that the 
window will show what is on disk 1.  Now, double click on the 
program called DAVINCI.TOS.

Step 2.  Select teh disk submenu.
     If the icons are not visible, then press the space bar on the 
keyboard.  Click on the disk icon using the right mouse button.  
The disk submenu should appear.

Step 3.  Load the picture called INTRUDER.IFF.
     To load a picture, click with the mouse on the "load" button.  
A file selector will appear.  On the left side of the file 
selector, there should be a directory of what is currently on disk 
1.  On disk 1, there should be a subdirectory called PICTURES.  
Double click with the mouse on PICTURES.  The directory should 
change so that now you are looking at what is inside of the 
PICTURES subdirectory.  There should be a picture called 
INTRUDER.IFF.  Double click on INTRUDER.IFF.

Step 4.  Select the ellipse submenu.
     Click on the ellipse icon using the right mouse button.  The 
ellipse submenu should appear.

Step 5.  Select the "to brush" option.
     Click on the "to brush" icon (or press the 'q' key on the 
keyboard).

Step 6.  Select one of the green palette colors.  The greens are 
organized from darkest to lightest.  Pick a green from the middle 
of the selection of greens.
     The current palette colors are displayed above the main strip 
of icons on the menu.  To select a palette color, simply click 
with the left mouse button on the desired color.

Step 7.  Draw a small ellipse on the picture.
     Move the mouse pointer on top of the picture.  Press and hold 
down the left mouse button.  Now, while holding down the left 
mouse button, move the mouse pointer away from where you first 
clicked the mouse button.  A filled ellipse will appear.  When the 
ellipse is at the desired size, release the mouse button.

Step 8.  Select the drawing mode submenu.
     Click with the right mouse button on the drawing mode icon 
(the icon looks like a brush with an 'm').  The drawing mode 
submenu should appear.

Step 9.  Select the filter drawing mode.
     Click on the "filter" button (or press the 'F9' key on the 
keyboard).

Step 10.  Turn off the menus.
     The menus can be toggled on and off by pressing the space 
bar.

Step 11.  Draw over the robot.
     Notice that the robot turns green under your brush.  The 
filter drawing mode functions by using the h (hue) of the current 
palette color and the s & v (saturation and volume) of each color 
under the brush to develop a new color.  If the desired new color 
exists in the current palette, then the desired new color is drawn 
over the color under the brush.
     The filter drawing mode is used to modify the color of 
something while still retaining its brightness.