Re: loop through cairo_path_data_t
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- Subject: Re: loop through cairo_path_data_t
- From: Hakki Dogusan <dogusanh@...>
- Date: 2010年10月20日 10:57:13 +0300
Hi,
(Small modification in previous example)
20/10/2010 10:37, Hakki Dogusan wrote:
Hi,
[snip]
Will something like as follows work for you?
-------------------------------------------------------------------------
-- cairo_path_t *path;
-- cairo_path_data_t *data;
local path = cairo.copy_path (cr);
local i = 0
local numdata = cairo.path_num_data(path)
while i < numdata do
-- data = &path->data[i];
local headertype = cairo.path_data_header_type(path, i)
if headertype == CAIRO.PATH_MOVE_TO then
local x,y = cairo.path_data_point(path, i, 1)
do_move_to_things (x, y);
elseif headertype == CAIRO.PATH_LINE_TO then
local x,y = cairo.path_data_point(path, i, 1)
do_line_to_things (x, y);
elseif headertype == CAIRO.PATH_CURVE_TO then
local x1,y1 = cairo.path_data_point(path, i, 1)
local x2,y2 = cairo.path_data_point(path, i, 2)
local x3,y3 = cairo.path_data_point(path, i, 3)
do_curve_to_things (x1, y1, x2, y2, x3, y3);
elseif headertype == CAIRO.PATH_CLOSE_PATH then
do_close_path_things ();
end
local headerlength = cairo.path_data_header_length(path, i)
i = i + headerlength
end
cairo.path_destroy (path);
-------------------------------------------------------------------------
--
Regards,
Hakki Dogusan