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Center the rainbow a bit better

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This commit is contained in:
David Sansome 2011-06-23 20:36:05 +00:00
parent 5792c114e8
commit a81c5fdf90
1 changed files with 1 additions and 1 deletions
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src/analyzers/nyancatanalyzer.cpp
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@ -89,7 +89,7 @@ void NyanCatAnalyzer::analyze(QPainter& p, const Analyzer::Scope& s) {
const float top_of_cat = float(height())/2 - float(kCatHeight)/2; const float top_of_cat = float(height())/2 - float(kCatHeight)/2;
for (int band=0 ; band<kRainbowBands ; ++band) { for (int band=0 ; band<kRainbowBands ; ++band) {
// Calculate the Y position of this band. // Calculate the Y position of this band.
const float y = float(kCatHeight) / (kRainbowBands + 2) * (band + 0.5) + top_of_cat; const float y = float(kCatHeight) / (kRainbowBands + 1) * (band + 0.5) + top_of_cat;
// pow constants computed so that // pow constants computed so that
// | band_scale(0) | ~= .5 and | band_scale(5) | ~= 32 // | band_scale(0) | ~= .5 and | band_scale(5) | ~= 32
const float band_scale = -std::cos(M_PI*band/(kRainbowBands-1))*.5*std::pow(2.3, band); const float band_scale = -std::cos(M_PI*band/(kRainbowBands-1))*.5*std::pow(2.3, band);