Corrected height calculation, floored log2-output explicitly.
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36dd2b7e5a
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@ -1,6 +1,6 @@
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cmake_minimum_required (VERSION 3.2)
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project(identiconpp
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VERSION 0.3.2
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VERSION 0.3.3
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LANGUAGES CXX
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)
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@ -42,14 +42,14 @@ void Identiconpp::check_entropy(const string &digest, algorithm type)
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// We need bits for each field in half of the columns, +1 column if
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// they are uneven. Then we need enough bits to pick a color.
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entropy_required = (_columns / 2 + _columns % 2) * _rows
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+ std::log2(_foreground.size()) + 1;
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+ std::floor(std::log2(_foreground.size())) + 1;
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break;
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}
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case algorithm::ltr_asymmetric:
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{
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entropy_provided = digest.length() * 4;
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entropy_required = _columns * _rows
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+ std::log2(_foreground.size()) + 1;
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+ std::floor(std::log2(_foreground.size())) + 1;
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break;
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}
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case algorithm::sigil:
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@ -46,7 +46,8 @@ Magick::Image Identiconpp::generate(const string &digest, const uint16_t width)
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ttdebug << "Using digest: " << digest << '\n';
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check_entropy(digest, _type);
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const uint16_t imgwidth = width - _padding[0] * 2;
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const uint16_t imgheight = imgwidth / _columns * _rows;
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const uint16_t imgheight =
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std::round(static_cast<float>(imgwidth) / _columns * _rows);
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ttdebug << "width: " << std::to_string(imgwidth + _padding[0] * 2)
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<< ", height: " << std::to_string(imgheight + _padding[1] * 2)
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<< "\n";
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@ -101,7 +102,7 @@ Magick::Color Identiconpp::get_color(const uint16_t firstbit,
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const string &digest)
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{
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// Number of bits to use
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const uint16_t colorbits = std::log2(_foreground.size()) + 1;
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const uint16_t colorbits = std::floor(std::log2(_foreground.size())) + 1;
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// Extract approximation
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std::stringstream ss;
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