```SIM41E

Easy-plotter manual
-------------------

Easy Plotter is attached to the "Main Context menu". Right click on the calculator
background outside the keys and outside the display to show the menu.
If mouse right click fails use left click.

Press ESC key on your computer to stop endless programs.

Origin:
Upper left corner:  Coordinates (0,0)
x is horizontal incrementing from left to right.
y is vertical incrementing down

x and y are in pixels.

Plotter commands:

x1 [ENTER] y1 [XEQ] [alpha] "DOT" [alpha]
Draws a dot at point (x1,y1)
To draw many dots put the calculator on Turbo mode. (Recommended)

x1 [ENTER] y1 [ENTER] x2 [ENTER] y2 [XEQ] [alpha] "LINE" [alpha]
Draws a line between point (x1,y1) and point (x2,y2)

x1 [ENTER] y1 [ENTER] x2 [ENTER] y2 [XEQ] [alpha] "BOX" [alpha]
Draws a box between point (x1,y1) and point (x2,y2)

x1 [ENTER] y1 [ENTER] radius [XEQ] [alpha] "CIRCLE" [alpha]
Draws a circle with center at point (x1,y1) and given radius

x1 [ENTER] y1 [ENTER] radius [ENTER] aspect [XEQ] [alpha] "ELLIPSE" [alpha]
Draws an ellipse with center at point (x1,y1), given radius and given aspect:
Specifies the aspect ratio of the ellipse. The default value is 1.0,
which produces a perfect (nonelliptical) circle. Values greater than 1.0
produce a vertical ellipse; values less than 1.0 produce a horizontal ellipse.

x1 [ENTER] y1 [ALPHA] text [ALPHA] [XEQ] [alpha] "TEXT" [alpha]
Draws a text string at point (x1,y1)

color number [XEQ] [alpha] "PENCOLOR" [alpha]
Select a pen color with number in x register.
Number between 0 to 16777215  (integer)

color number [XEQ] [alpha] "BACKCOLOR" [alpha]
Select a background color with number in x register.
Number between 0 to 16777215 (integer)

red [ENTER] green [ENTER] blue [XEQ] [alpha] "RGBPEN" [alpha]
Select a pen color given red, green and blue components
Each component between 0 and 255. (integer)

red [ENTER] green [ENTER] blue [XEQ] [alpha] "RGBBACK" [alpha]
Select a background color given red, green and blue components
Each component between 0 and 255. (integer)

[ALPHA] font name  [ALPHA] [XEQ] [alpha] "FONTNAME" [alpha]
Select the font name for the following text strings

number  [XEQ] [alpha] "FONTSIZE" [alpha]
Select the font size for the following text strings.

number  [XEQ] [alpha] "WIDTH" [alpha]
Select pen width

[XEQ] [alpha] "CLEAR" [alpha]
Clear the canvas. (paint region)

Examples:  SIM41 programs.
----------------------------------------------------------------------
Program1

100
50
DOT

Draws a dot on x=100,y=50
----------------------------------------------------------------------
Program 2

10
20
80
100
LINE

Draws a line from (10,20) to (80,100)
----------------------------------------------------------------------
Program 3

20
30
100
200
BOX

Draws a box from (20,30) to (100,200)
----------------------------------------------------------------------
Program 4

100
100
80
CIRCLE

Draws a circle with center at (100,100) and radius equal to 80
----------------------------------------------------------------------
Program 5

100
100
80
1.5
ELLIPSE

Draws an ellipse with center at (100,100), major semiaxis=80 and with aspect=1.5
----------------------------------------------------------------------
Program 6

100
100
80
0.6
ELLIPSE

Draws a second ellipse with center at (100,100), major semi axis=80 and aspect=0.6
----------------------------------------------------------------------
Program 7

100
200
"HELLO"
TEXT

Prints hello on x=100, y=200
----------------------------------------------------------------------
Program 8

255
0
0
RGBPEN

Changes pen color to red
----------------------------------------------------------------------
Program 9

0
0
255
RGBBACK

Changes the color of canvas to blue
----------------------------------------------------------------------
Program 10

"COURIER NEW"
FONTNAME

Changes the font of pen to Courier New
---------------------------------------------------------------------
Program 11

"ARIAL"
FONTNAME

Changes the pen's font  to Arial
---------------------------------------------------------------------
Program 12

10
FONTSIZE

Changes the pen's fontsize to 10
---------------------------------------------------------------------
Program 13

1000000
PENCOLOR

Set the pen color to 1 million
---------------------------------------------------------------------
Program 14

0
BACKCOLOR

Color of canvas is changed to black
---------------------------------------------------------------------
Program 15

16777215
BACKCOLOR

Color of canvas changed to white
---------------------------------------------------------------------
Program 16

16777215
PENCOLOR

Color of pen is white now
---------------------------------------------------------------------
Program 17

CLEAR

Erase all on the canvas.  --Paint region cleared--
---------------------------------------------------------------------
Program 18

4
WIDTH

Pen width changed to 4
---------------------------------------------------------------------

Notes:

Color ranges from 0 (black) to 16777215 (white)

HP41 programs using DOT to paint very complex figures could be slow ...
so turn on TURBO MODE.

```