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63 lines
1.4 KiB
C++
63 lines
1.4 KiB
C++
#include <cstring>
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#include <cmath>
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#include <string>
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#include <base/types.h>
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#include <base/arithmeticOverflow.h>
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#include <Common/Exception.h>
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#include <Common/UnicodeBar.h>
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#include <Common/NaNUtils.h>
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#include <iostream>
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namespace UnicodeBar
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{
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double getWidth(double x, double min, double max, double max_width)
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{
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if (isNaN(x) || isNaN(min) || isNaN(max))
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return 0;
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if (x <= min)
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return 0;
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if (x >= max)
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return max_width;
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return (x - min) / (max - min) * max_width;
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}
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size_t getWidthInBytes(double width)
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{
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return ceil(width - 1.0 / 8) * UNICODE_BAR_CHAR_SIZE;
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}
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void render(double width, char * dst)
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{
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size_t floor_width = floor(width);
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for (size_t i = 0; i < floor_width; ++i)
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{
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memcpy(dst, "█", UNICODE_BAR_CHAR_SIZE);
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dst += UNICODE_BAR_CHAR_SIZE;
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}
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size_t remainder = floor((width - floor_width) * 8);
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if (remainder)
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{
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memcpy(dst, &"▏▎▍▌▋▋▊▉"[(remainder - 1) * UNICODE_BAR_CHAR_SIZE], UNICODE_BAR_CHAR_SIZE);
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dst += UNICODE_BAR_CHAR_SIZE;
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}
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*dst = 0;
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}
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std::string render(double width)
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{
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std::string res(getWidthInBytes(width), '\0');
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render(width, res.data());
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return res;
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}
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}
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