HP Prime Graphing Wireless Calculator Manual do Utilizador descarregar pdf (Página 645)

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PIXOFF_P, PIXOFF

Syntax: PIXOFF([G], x, y)

Syntax: PIXOFF_P([G], x, y)

Sets the color of the pixel G with coordinates x,y to white. G can be any of the graphics variables and is

optional. The default is G0, the current graphic.

PIXON_P, PIXON

Syntax: PIXON([G], x, y [ ,color])

Syntax: PIXON_P([G], x, y [ ,color])

Sets the color of the pixel in graphic variable G with coordinates (x,y) to the entered color. G can be any of the

graphics variables and is optional. The default is G0, the current graphic.

The optional color can be any hexadecimal integer entered in the form aaRRGGBB. This is an RGB color with

the alpha channel in the high order byte. The alpha channel numbers can be any integer between 0 (opaque)

and 255 (transparent). If no color is specied, the default black is used.

RECT_P, RECT

Syntax: RECT([G, x1, y1, x2, y2, edgecolor, fillcolor])

Syntax: RECT_P([G, x1, y1, x2, y2, edgecolor, fillcolor])

Draws a rectangle on G between points x1,y1 and x2,y2 using edgecolor for the perimeter and llcolor for the

inside.

G can be any of the graphics variables and is optional. The default is G0, the current graphic.

x1, y1 are optional. The default values represent the top left of the graphic.

x2, y2 are optional. The default values represent the bottom right of the graphic.

edgecolor and llcolor can be any color specied as #RRGGBB. Both are optional, and llcolor defaults to

edgecolor if not specied.

To erase a GROB, execute RECT(G). To clear the screen execute RECT().

When optional arguments are provided in a command with multiple optional parameters (like RECT), the

arguments provided correspond to the leftmost parameters

rst. For example, in the program below, the

arguments 40 and 90 in the RECT_P command correspond to x1 and y1. The argument #000000

corresponds to edgecolor, since there is only the one additional argument. If there had been two additional

arguments, they would have referred to x2 and y2 rather than edgecolor and llcolor. The program produces

a rectangle with a black edge and black ll.

EXPORT BOX()

BEGIN

RECT();

RECT_P(40,90,#0 00000);

WAIT;

END;

Program commands 597

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HP Prime Graphing Wireless Calculator Manual do Utilizador Página 645

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