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#pragma once
#include "software_renderer/icon_info.hpp"
#include "drape/drape_global.hpp"
#include "base/buffer_vector.hpp"
#include "base/math.hpp"
#include <algorithm>
#include <iterator>
namespace software_renderer
{
struct PenInfo
{
typedef buffer_vector<double, 16> TPattern;
dp::Color m_color;
double m_w;
TPattern m_pat;
double m_offset;
IconInfo m_icon;
double m_step;
dp::LineJoin m_join;
dp::LineCap m_cap;
bool m_isSolid;
PenInfo(dp::Color const & color = dp::Color(0, 0, 0, 255),
double width = 1.0,
double const * pattern = 0,
size_t patternSize = 0,
double offset = 0,
char const * symbol = 0,
double step = 0,
dp::LineJoin join = dp::RoundJoin,
dp::LineCap cap = dp::RoundCap)
: m_color(color)
, m_w(width)
, m_offset(offset)
, m_step(step)
, m_join(join)
, m_cap(cap)
, m_isSolid(false)
{
if (symbol != nullptr)
m_icon = IconInfo(symbol);
if (!m_icon.m_name.empty())
{
m_isSolid = false;
}
else
{
/// if pattern is solid
if ((pattern == 0 ) || (patternSize == 0))
m_isSolid = true;
else
{
// hack for Samsung GT-S5570 (GPU floor()'s texture pattern width)
m_w = std::max(m_w, 1.0);
buffer_vector<double, 4> tmpV;
std::copy(pattern, pattern + patternSize, std::back_inserter(tmpV));
if (tmpV.size() % 2)
tmpV.push_back(0);
double length = 0;
/// ensuring that a minimal element has a length of 2px
for (size_t i = 0; i < tmpV.size(); ++i)
{
if ((tmpV[i] < 2) && (tmpV[i] > 0))
tmpV[i] = 2;
length += tmpV[i];
}
int i = 0;
buffer_vector<double, 4> vec;
if ((offset >= length) || (offset < 0))
offset -= floor(offset / length) * length;
double curLen = 0;
/// shifting pattern
while (true)
{
if (curLen + tmpV[i] > offset)
{
//we're inside, let's split the pattern
if (i % 2 == 1)
vec.push_back(0);
vec.push_back(curLen + tmpV[i] - offset);
std::copy(tmpV.begin() + i + 1, tmpV.end(), std::back_inserter(vec));
std::copy(tmpV.begin(), tmpV.begin() + i, std::back_inserter(vec));
vec.push_back(offset - curLen);
if (i % 2 == 0)
vec.push_back(0);
break;
}
else
curLen += tmpV[i++];
}
int periods = std::max(int((256 - 4) / length), 1);
m_pat.reserve(periods * vec.size());
for (int i = 0; i < periods; ++i)
std::copy(vec.begin(), vec.end(), std::back_inserter(m_pat));
}
}
}
};
}
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