RGBA

Alfa Green Blue Blue

RGBA bụ acronym maka Alfa Green Blue Blue.

Gịnị bụ Alfa Green Blue Blue?

Ụdị agba ejiri na eserese kọmputa kọwaa agba n'usoro nke agba atọ bụ isi (red, green, and blue) (RGB), jikọtara ya na ọwa Alfa nke na-anọchite anya opacity. Uru alfa na-akọwapụta nghọta nke agba: 0 na-egosipụta nke ọma (anaghị ahụ anya), na 255 (ma ọ bụ 1 n'ọnọdụ ụfọdụ ebe akọwapụtara alfa site na 0 ruo 1) zuru oke.

Nke a bụ ụfọdụ ọmụmaatụ koodu na-egosi iji RGBA n'ọnọdụ dị iche iche:

RGBA na HTML/CSS

In CSS, RGBA agba nwere ike iji style ọcha. A kọwapụtara ọwa alfa n'ọ̀tụ̀tụ̀ si 0 ruo 1, ebe 0 pụtara ìhè kpam kpam na 1 bụ kpam kpam opaque.

body {
  background-color: rgba(255, 99, 71, 0.5); /* Semi-transparent red */
}

.text-color {
  color: rgba(0, 0, 0, 0.8); /* Mostly opaque black */
}

RGBA na Javascript

Na Javascript, ị nwere ike iji ụkpụrụ RGBA mgbe ị na-arụ ọrụ na akwaaji ma ọ bụ na-edozi ụdịdị.

// Setting canvas fill color with RGBA
const canvas = document.getElementById('myCanvas');
const ctx = canvas.getContext('2d');

ctx.fillStyle = 'rgba(255, 165, 0, 0.6)'; // Semi-transparent orange
ctx.fillRect(20, 20, 150, 100);

RGBA na Python nwere ohiri isi

Na Python, na-eji ọba akwụkwọ Pillow maka nhazi onyonyo, ị nwere ike ịkọwapụta agba na RGBA mgbe ị na-ese foto.

from PIL import Image, ImageDraw

# Create a new image with RGBA (transparent background)
img = Image.new('RGBA', (200, 200), (255, 255, 255, 0))

draw = ImageDraw.Draw(img)
# Draw a semi-transparent rectangle
draw.rectangle([(50, 50), (150, 150)], fill=(255, 0, 0, 128))

img.show()

Otu n'ime ihe atụ ndị a na-egosi ka enwere ike isi jiri ụkpụrụ RGBA mee ihe na mmepe webụ na nhazi onyonyo iji jikwaa agba na opacity ike.

  • Abbreviation: RGBA
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