skia2/experimental/docs/utilities.js

25 lines
494 B
JavaScript

function alpha(value, color) {
return value << 24 | (color & 0x00FFFFFF);
}
function argb(a, r, g, b) {
return a << 24 | r << 16 | g << 8 | b;
}
function assert(condition) {
if (!condition) debugger;
}
function isAlpha(code) {
return (code > 64 && code < 91) // upper alpha (A-Z)
|| (code > 96 && code < 123); // lower alpha (a-z)
}
function isArray(a) {
return a.constructor === Array;
}
function rgb(r, g, b) {
return 0xFF << 24 | r << 16 | g << 8 | b;
}