zhangyiss/Table-and-Graph-Libs
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properly invert sub-fragment height

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Jan Kuhlmann
2025-01-15 10:44:42 +01:00
parent f9ff88c276
commit ebcbc6978d
1 changed files with 14 additions and 6 deletions
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20
graphs.hpp
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@@ -853,13 +853,17 @@ namespace graphs
const long double y_term = ((long double)y - options.y.min) * y_span_recip * (long double)options.height; const long double y_term = ((long double)y - options.y.min) * y_span_recip * (long double)options.height;
// calculate sub-fragment position (2x4 for braille) // calculate sub-fragment position (2x4 for braille)
const size_t x_sub = (x_term - std::floor(x_term)) * 2; const size_t char_width = 2;
const size_t y_sub = (y_term - std::floor(y_term)) * 4; const size_t char_height = 4;
size_t x_sub = (x_term - std::floor(x_term)) * char_width;
size_t y_sub = (y_term - std::floor(y_term)) * char_height;
// invert y_sub
y_sub = char_height - 1 - y_sub;
// draw Fragment // draw Fragment
const size_t index = (size_t)x_term + (options.height - 1 - (size_t)y_term) * options.width; const size_t index = (size_t)x_term + (options.height - 1 - (size_t)y_term) * options.width;
intermediate.texture[index].color = color; // TODO: mix color here intermediate.texture[index].color = color; // TODO: mix color here
intermediate.texture[index].data |= dotvalues[x_sub][3-y_sub]; intermediate.texture[index].data |= dotvalues[x_sub][y_sub];
} }
} }
return intermediate; return intermediate;
@@ -885,13 +889,17 @@ namespace graphs
const long double y_term = ((long double)y - options.y.min) * y_span_recip * (long double)options.height; const long double y_term = ((long double)y - options.y.min) * y_span_recip * (long double)options.height;
// calculate sub-fragment position (2x4 for braille) // calculate sub-fragment position (2x4 for braille)
const size_t x_sub = (x_term - std::floor(x_term)) * 2; const size_t char_width = 2;
const size_t y_sub = (y_term - std::floor(y_term)) * 4; const size_t char_height = 4;
size_t x_sub = (x_term - std::floor(x_term)) * char_width;
size_t y_sub = (y_term - std::floor(y_term)) * char_height;
// invert y_sub
y_sub = char_height - 1 - y_sub;
// draw Fragment // draw Fragment
const size_t index = (size_t)x_term + (options.height - 1 - (size_t)y_term) * options.width; const size_t index = (size_t)x_term + (options.height - 1 - (size_t)y_term) * options.width;
intermediate.texture[index].color = color; // TODO: mix color here intermediate.texture[index].color = color; // TODO: mix color here
intermediate.texture[index].data |= dotvalues[x_sub][3-y_sub]; intermediate.texture[index].data |= dotvalues[x_sub][y_sub];
} }
} }
} }