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| 1 function alpha(value, color) { |
| 2 return value << 24 | (color & 0x00FFFFFF); |
| 3 } |
| 4 |
| 5 function argb(a, r, g, b) { |
| 6 return a << 24 | r << 16 | g << 8 | b; |
| 7 } |
| 8 |
| 9 function assert(condition) { |
| 10 if (!condition) debugger; |
| 11 } |
| 12 |
| 13 function isAlpha(code) { |
| 14 return (code > 64 && code < 91) // upper alpha (A-Z) |
| 15 || (code > 96 && code < 123); // lower alpha (a-z) |
| 16 } |
| 17 |
| 18 function isArray(a) { |
| 19 return a.constructor === Array; |
| 20 } |
| 21 |
| 22 function rgb(r, g, b) { |
| 23 return 0xFF << 24 | r << 16 | g << 8 | b; |
| 24 } |
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