comparison: src/colors.cpp
src/colors.cpp
- changeset 43
- 08dc62e03a6d
- parent 35
- 98906a94732f
- child 94
- 164f53fb5921
equal
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inserted
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| 42:1d03dc1173cd | 43:08dc62e03a6d |
|---|---|
| 80 const int alpha = pattern.cap(5).toInt(); | 80 const int alpha = pattern.cap(5).toInt(); |
| 81 definition.faceColor.setAlpha(alpha); | 81 definition.faceColor.setAlpha(alpha); |
| 82 } | 82 } |
| 83 } | 83 } |
| 84 } | 84 } |
| 85 | |
| 86 /* | |
| 87 * Calculates the luma-value for the given color. | |
| 88 * c.f. https://en.wikipedia.org/wiki/Luma_(video) | |
| 89 */ | |
| 90 double luma(const QColor& color) | |
| 91 { | |
| 92 return 0.2126 * color.redF() + 0.7152 * color.greenF() + 0.0722 * color.blueF(); | |
| 93 } |
