HP 48gII Graphing Calculator Manual de usuario descargar pdf (Pagina 738)

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PIX?, PIXON, and PIXOFF

These functions take as input the coordinates of point in user coordinates,

(x,y), or in pixels {#n, #m}.

• PIX? Checks if pixel at location (x,y) or {#n, #m} is on.

• PIXOFF turns off pixel at location (x,y) or {#n, #m}.

• PIXON turns on pixel at location (x,y) or {#n, #m}.

PVIEW

This command takes as input the coordinates of a point as user coordinates

(x,y) or pixels {#n, #m}, and places the contents of PICT with the upper left

corner at the location of the point specified. You can also use an empty list

as argument, in which case the picture is centered in the screen. PVIEW does

not activate the graphics cursor or the picture menu. To activate any of those

features use PICTURE.

PXC

The function PXC converts pixel coordinates {#n #m} to user-unit coordinates

(x,y).

CPX

The function CPX converts user-unit coordinates (x,y) to pixel coordinates

{#n #m}.

Programming examples using drawing functions

In this section we use the commands described above to produce graphics

with programs. Program listing are provided in the attached diskette or CD

ROM.

Example 1

- A program that uses drawing commands

The following program produces a drawing in the graphics screen. (This

program has no other purpose than to show how to use calculator commands

to produce drawings in the display.)

1 2 ... 733 734 735 736 737 738 739 740 741 742 743 ... 863 864

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HP 48gII Graphing Calculator Manual de usuario Pagina 738

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