static bool wipcell_add_bezier(
fd_Outline o,
fd_Outline u,
uint i,
uint j,
uint contour_index,
fd_WIPCell cell)
{
bool ret = true;
uint ucontour_begin = u.contours[(int)contour_index].begin;
if (cell.to != uint.MaxValue && cell.to != j)
{
Debug.Assert(cell.to < j);
if (cell.from == ucontour_begin)
{
Debug.Assert(cell.to % 2 == 0);
Debug.Assert(cell.from % 2 == 0);
cell.start_len = (cell.to - cell.from) / 2;
}
else
{
cell.value = cell_add_range(cell.value, cell.from, cell.to);
if (cell.value == 0)
{
ret = false;
}
}
cell.from = j;
}
else
{
if (cell.from == uint.MaxValue)
{
cell.from = j;
}
}
cell.to = j + 2;
return(ret);
}
static bool for_each_wipcell_finish_contour(
fd_Outline o,
fd_Outline u,
uint contour_index,
fd_WIPCell[] cells,
ref uint max_start_len)
{
bool ret = true;
for (uint y = 0; y < o.cell_count_y; y++)
{
for (uint x = 0; x < o.cell_count_x; x++)
{
fd_WIPCell cell = cells[y * o.cell_count_x + x];
ret &= wipcell_finish_contour(o, u, contour_index, cell, ref max_start_len);
}
}
return(ret);
}
static bool try_to_fit_in_cell_count(
fd_Outline original,
out fd_Outline replacement)
{
bool ret = true;
var cells = new fd_WIPCell[original.cell_count_x * original.cell_count_y];
init_wipcells(original, cells);
var temp = new fd_Outline
{
bbox = original.bbox,
cell_count_x = original.cell_count_x,
cell_count_y = original.cell_count_y,
};
var num_of_contours = original.contours.Count;
for (uint contour_index = 0; contour_index < num_of_contours; contour_index++)
{
uint contour_begin = original.contours[(int)contour_index].begin;
uint contour_end = original.contours[(int)contour_index].end;
temp.outline_add_odd_point();
var urange = new fd_ContourRange
{
begin = temp.num_of_points,
end = temp.num_of_points + contour_end - contour_begin
};
temp.add_outline_contour(urange);
for (uint i = contour_begin; i < contour_end; i += 2)
{
var p0 = original.points[(int)i];
var p1 = original.points[(int)(i + 1)];
//float *p2 = o.points[i + 2];
uint j = temp.num_of_points;
temp.add_outline_point(p0);
temp.add_outline_point(p1);
ret &= for_each_wipcell_add_bezier(original, temp, i, j, contour_index, cells);
}
uint max_start_len = 0;
ret &= for_each_wipcell_finish_contour(original, temp, contour_index, cells, ref max_start_len);
uint continuation_end = contour_begin + max_start_len * 2;
for (uint i = contour_begin; i < continuation_end; i += 2)
{
temp.add_outline_point(original.points[(int)i]);
temp.add_outline_point(original.points[(int)(i + 1)]);
}
var plast = original.points[(int)continuation_end];
temp.add_outline_point(plast);
}
if (!ret)
{
temp.fd_outline_destroy();
replacement = null;
return(ret);
}
uint filled_line = outline_add_filled_line(temp);
uint filled_cell = make_cell_from_single_edge(filled_line);
set_filled_cells(temp, cells, filled_cell);
copy_wipcell_values(temp, ref cells);
original.fd_outline_destroy();
replacement = temp;
return(ret);
}
static bool wipcell_finish_contour(
fd_Outline o,
fd_Outline u,
uint contour_index,
fd_WIPCell cell,
ref uint max_start_len)
{
bool ret = true;
uint ucontour_begin = u.contours[(int)contour_index].begin;
uint ucontour_end = u.contours[(int)contour_index].end;
// max_start_len = uint.MinValue;
if (cell.to < ucontour_end)
{
cell.value = cell_add_range(cell.value, cell.from, cell.to);
if (cell.value == 0)
{
ret = false;
}
cell.from = uint.MaxValue;
cell.to = uint.MaxValue;
}
Debug.Assert(cell.to == uint.MaxValue || cell.to == ucontour_end);
cell.to = uint.MaxValue;
if (cell.from != uint.MaxValue && cell.start_len != 0)
{
cell.value = cell_add_range(cell.value, cell.from, ucontour_end + cell.start_len * 2);
if (cell.value == 0)
{
ret = false;
}
max_start_len = Math.Max(max_start_len, cell.start_len);
cell.from = uint.MaxValue;
cell.start_len = 0;
}
if (cell.from != uint.MaxValue)
{
cell.value = cell_add_range(cell.value, cell.from, ucontour_end);
if (cell.value == 0)
{
ret = false;
}
cell.from = uint.MaxValue;
}
if (cell.start_len != 0)
{
cell.value = cell_add_range(cell.value, ucontour_begin, ucontour_begin + cell.start_len * 2);
if (cell.value == 0)
{
ret = false;
}
cell.start_len = 0;
}
Debug.Assert(cell.from == uint.MaxValue && cell.to == uint.MaxValue);
return(ret);
}