plgcolbga: Returns the background color (cmap0[0]) by 8-bit RGB value and PLFLT alpha transparency value
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plgcolbga: Returns the background color (cmap0[0]) by 8-bit RGB value and PLFLT alpha transparency value

plgcolbga (r,
 g,
 b,
 alpha);
 

Returns the background color (cmap0[0]) by 8-bit RGB value and PLFLT alpha transparency value.

r (PLINT_NC_SCALAR, output)

Returned value of the red intensity in the range from 0 to 255.

g (PLINT_NC_SCALAR, output)

Returned value of the green intensity in the range from 0 to 255.

b (PLINT_NC_SCALAR, output)

Returned value of the blue intensity in the range from 0 to 255.

alpha (PLFLT_NC_SCALAR, output)

Returned value of the alpha transparency in the range (0.0-1.0).

This function is used in example 31.

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plgcolbg: Returns the background color (cmap0[0]) by 8-bit RGB value  Home  plgcompression: Get the current device-compression setting